Layer door device and mechanical linkage system

Abstract

The application relates to the technical field of construction hoists, and discloses a landing door device and a mechanical linkage system. The landing door device can be linked with a cage of a construction hoist, the cage is provided with a swingable flap door, the landing door device comprises a fixed door frame, a sliding door and a locking mechanism. The fixed door frame comprises a frame body and a pedal assembly installed at the bottom of the frame body, the pedal assembly is arranged close to the flap door, the sliding door is arranged parallel to the fixed door frame, the sliding door can be pushed and pulled relative to the fixed door frame, and the locking mechanism is used for locking or unlocking the sliding door and the frame body. The flap door is used for driving the pedal assembly to swing circumferentially, so that the sliding door and the pedal assembly are locked or unlocked. According to the application, a landing door device capable of being locked or unlocked in cooperation with the cage of the construction hoist is designed, and a double locking mechanism is arranged on the landing door device, so that the safety of the cage of the construction hoist in cooperation with the landing door device for construction is ensured.

Description

Technical Field

[0001] This application belongs to the field of construction hoist technology, specifically relating to a landing door device and a mechanical linkage system. Background Technology

[0002] Construction hoists are frequently used in conjunction with landing doors for the construction of high-rise buildings, including interior and exterior decoration, bridges, and chimneys. Current technology typically employs a simple, full-height landing door structure, with the hoist operator usually responsible for opening and closing the door, resulting in poor safety. Furthermore, the hoist cage and landing door are two independent systems lacking coordination, frequently posing a risk of the hoist continuing to operate with the landing door open, thus failing to meet the safety requirements of construction workers. Summary of the Invention

[0003] The purpose of this application is to provide a landing door device and a mechanical linkage system that realizes dual unlocking protection for the landing door device and ensures the safe operation of the construction hoist.

[0004] To achieve the above objectives, this application provides a landing door device and a mechanical linkage system. The landing door device is linked and cooperates with the cage of a construction hoist. The cage is equipped with a swing-type flap door. The landing door device includes:

[0005] A fixed door frame, including a frame body and a pedal assembly installed at the bottom of the frame body, the pedal assembly being positioned close to the flip door;

[0006] Sliding doors are installed parallel to a fixed door frame and can be pushed and pulled relative to the fixed door frame; and

[0007] Locking mechanism, used to lock or unlock sliding doors and frames;

[0008] The flap door is used to drive the pedal assembly to swing circumferentially, so as to lock or unlock the sliding door and the pedal assembly.

[0009] In the embodiments of this application, the sliding door has a frame structure and includes a first horizontal bar and a first vertical bar, and the locking mechanism includes:

[0010] A connecting plate is installed at the bottom of the first crossbar;

[0011] The locking hook has a first end that movably abuts against the side of the connecting plate opposite to the first horizontal bar, and a second end that slidably rests on the first vertical bar; and

[0012] The mating part is installed on the frame. The second end of the locking hook slides along the first vertical rod, which can lock or unlock the mating part.

[0013] In embodiments of this application, the locking hook includes:

[0014] The mounting rod extends in the same direction as the first crossbar, and movably abuts against the bottom of the connecting plate; and

[0015] The engaging part is installed at the end of the mounting rod and slidably engages with the first vertical rod.

[0016] In the embodiments of this application, the mating component is a plate-shaped structure and is located on the side of the first vertical rod away from the mounting rod. The mating component is also provided with a buffer block on the side facing the first vertical rod.

[0017] In the embodiments of this application, both the locking hook and the mating part are hook structures.

[0018] In embodiments of this application, the locking mechanism further includes a first buffer assembly connecting the connecting plate and the mounting rod, the first buffer assembly comprising:

[0019] The first guide rod has limit blocks at both ends; and

[0020] The first elastic element is wrapped around the outer periphery of the first guide rod, which moves sequentially through the connecting plate and the mounting rod. The first elastic element is connected between the connecting plate and the limiting block located at the top.

[0021] In embodiments of this application, the pedal assembly includes:

[0022] A rotating shaft, rotatably mounted on the bottom of the frame; and

[0023] The self-locking pedal is installed on the rotating shaft, and the length direction of the self-locking pedal is consistent with the length direction of the rotating shaft. Under the driving action of the flip door, the self-locking pedal can swing in a circumferential direction.

[0024] In the embodiments of this application, the frame includes a second horizontal bar and a second vertical bar. The self-locking pedal includes a flat part and flanges on both sides of the flat part. A space is formed between the two flanges and the flat part to cover the second horizontal bar. The bottom end of the first vertical bar is also provided with a guide sliding assembly. When the flip door drives the flat part to swing to a horizontal position, the guide sliding assembly can slide along the flat part.

[0025] In embodiments of this application, the guide sliding assembly includes:

[0026] A support base is installed at the bottom end of the first vertical rod;

[0027] The guide wheel is mounted on the support base and located above the second crossbar. One end of the flat part has a clearance opening to avoid the guide wheel.

[0028] In embodiments of this application, the guide sliding assembly further includes:

[0029] The limit wheel is mounted on the support base and located above the self-locking pedal, which can swing between the second crossbar and the limit wheel.

[0030] In embodiments of this application, the pedal assembly further includes:

[0031] Mounting base;

[0032] The second buffer assembly has an ear plate at the bottom of the second vertical rod, and the second buffer assembly moves through the ear plate and connects to the mounting base; and

[0033] A connecting cover plate is placed on the mounting base, with one end of the connecting cover plate connected to the flat part and the other end pivotally connected to the mounting base;

[0034] The second buffer assembly, mounting base, and connecting cover are all arranged on the same side as the self-locking pedal.

[0035] In embodiments of this application, the second buffer component includes:

[0036] The second guide rod has limit blocks at both ends; and

[0037] The second elastic element is wrapped around the outer periphery of the second guide rod, the second guide rod movably passes through the ear plate, the second elastic element is installed on the mounting base, and the second elastic element is connected between the ear plate and the limiting block located at the top.

[0038] In embodiments of this application, the door device further includes:

[0039] The guide frame is installed on the fixed frame and arranged parallel to the sliding door. The guide frame is equipped with multiple sliding parts that slide with the sliding door.

[0040] In embodiments of this application, the door device further includes:

[0041] Limit switches, installed on the guide door frame, send position signals during the sliding door's movement; and

[0042] The control unit is electrically connected to the limit switch. The control unit controls the power supply to or off of the construction hoist based on the position signal.

[0043] In embodiments of this application, the following are included:

[0044] The cage of a construction hoist; and

[0045] The floor door device as described above.

[0046] Through the above technical solutions, the landing door device and mechanical linkage system provided in the embodiments of the present invention have the following beneficial effects:

[0047] The landing door device of this application cooperates with the flip-up door panel of the construction hoist cage. The flip-up door panel drives the pedal assembly to swing circumferentially until it contacts the fixed door frame, unlocking the pedal assembly from the sliding door. At this time, the locking mechanism can unlock the sliding door from the fixed door frame, allowing the sliding door to slide relative to the fixed door frame. During the locking process, the pedal mechanism first locks the sliding door, and then the locking mechanism locks the sliding door to the fixed door frame. This application designs a landing door device that can cooperate with the flip-up door of the construction hoist cage for locking or unlocking. The landing door device is equipped with a double locking mechanism, achieving double protection during the locking and unlocking process of the landing door device, ensuring the safety of construction hoist and landing door cooperation during construction.

[0048] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0049] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings:

[0050] Figure 1 This is a schematic diagram of the structure of the middle-layer door device and the flip-up door according to this application;

[0051] Figure 2 This is a schematic diagram of the locking mechanism in the closed state of the landing door device according to this application;

[0052] Figure 3 This is a schematic diagram of the locking mechanism in the open state of the landing door device according to this application;

[0053] Figure 4 This is a schematic diagram of the landing door device according to this application in the locked state;

[0054] Figure 5 This is a schematic diagram of the floor door device according to this application in the unlocked state;

[0055] Figure 6 This is a schematic diagram of the tread plate assembly in the landing door device according to this application;

[0056] Figure 7 This is a structural schematic diagram of the door device according to this application;

[0057] Figure 8 This is a schematic diagram of the structure of the self-locking pedal in the pedal assembly according to this application;

[0058] Figure 9 This is a structural schematic diagram of the locking hook in the locking mechanism according to this application;

[0059] Figure 10 This is a schematic diagram of the structure of the mating component in the locking mechanism according to this application;

[0060] Figure 11 This is a schematic diagram of the structure of the first buffer component in the pedal assembly according to this application.

[0061] Explanation of reference numerals in the attached figures

[0062] 1. Flip-door 431 buffer block

[0063] 2 Sliding door 44 First buffer assembly

[0064] 21 First crossbar 441 First guide rod

[0065] 22 First vertical rod 442 First elastic element

[0066] 23 Guide sliding assembly 45 First chuck

[0067] 231 Support base 46 Second chuck

[0068] 232 Guide wheel 5 Pedal assembly

[0069] 233 Limit wheel 51 Rotating shaft

[0070] 3. Frame 52 Self-locking pedal

[0071] 31 Second crossbar 521 Flat section

[0072] 32 Second vertical bar 522 Flanged edge

[0073] 321 Earplate 523 Clearance opening

[0074] 33 Protrusions 53 Mounting base

[0075] 34 Mounting plate 54 Second buffer assembly

[0076] 4 Locking Mechanism 541 Second Guide Rod

[0077] 41 Connecting plate 542 Second elastic element

[0078] 42 Locking hook 55 Connecting cover plate

[0079] 421 Mounting rod 6 Guide door frame

[0080] 422 Engaging part 61 Sliding part

[0081] 43 Mating component 62 Limit switch Detailed Implementation

[0082] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0083] The landing door device and mechanical linkage system according to this application are described below with reference to the accompanying drawings.

[0084] like Figure 1 As shown in the embodiments of this application, a landing door device is proposed. The landing door device is linked with the cage of a construction hoist. The cage is equipped with a swingable flip door 1. The landing door device includes a fixed door frame, a sliding door 2, and a locking mechanism 4. The fixed door frame includes a frame body 3 and a pedal assembly 5 installed at the bottom of the frame body 3. The pedal assembly 5 is located close to the flip door 1. The sliding door 2 is arranged parallel to the fixed door frame and can be pushed and pulled relative to the fixed door frame. The locking mechanism 4 is used to lock or unlock the sliding door 2 and the frame body 3. The flip door 1 is used to drive the pedal assembly 5 to swing circumferentially, so that the sliding door 2 and the pedal assembly 5 are locked or unlocked.

[0085] like Figure 4 and Figure 5 As shown, during the operation of the construction hoist, when the construction hoist reaches the designated floor, it receives an instruction to stop moving up and down. Then, the hoist's cage door slowly opens. At this time, the flip door 1, located outside the hoist's cage door, gradually flips and approaches the landing door device as the cage door opens, eventually pressing against the foot pedal assembly 5. One end of the flip door 1 is fixed to the bottom of the construction hoist and cannot move. Therefore, the flip door 1 can only move around the fixed bottom end and eventually presses against the foot pedal assembly 5 on the landing door device. At this time, the foot pedal assembly 5 is driven by the downward pressure of the flip door 1. Under the action of the driving force, the foot pedal assembly 5 is pressed against the fixed door frame. At this time, the first locking between the sliding door 2 and the foot pedal assembly 5 in the landing door device is released. Then, the second lock between the sliding door 2 and the fixed door frame in the landing door device is released. The construction personnel manually open the locking mechanism 4 to unlock the sliding door 2 from the fixed door frame. At this time, the sliding door 2 can move relative to the fixed door frame and move on the flip door 1. At this time, both locks of the landing door device are released and the landing door device is in the open state.

[0086] When the landing door device needs to be closed, first pull the sliding door 2 back to its initial position, which is the position where the locking mechanism 4 is not yet unlocked. This allows the locking mechanism 4 on the landing door device to lock. If the sliding door 2 is not pulled back to its initial position, the locking mechanism 4 will not be able to lock, and the flip door will be unable to retract from the landing door device due to the pressure of the sliding door 2. When the sliding door 2 returns to its initial position, the locking mechanism 4 can lock the sliding door 2 to the fixed landing door. At this time, the landing door device is in the closed state, the pedal assembly 5 at the bottom of the frame 3 pops up, and the sliding door 2 will no longer restrict the lifting of the flip door 1. The flip door 1 can then retract normally to the cage door near the construction hoist. Finally, the flip door 1 is fully retracted, the cage door of the construction hoist is closed, and the construction hoist resumes normal operation and can move up and down. The double locking device installed on the landing door device fulfills the requirement of double locking control when the landing door device is opened and closed, ensuring the safety of the construction hoist and the landing door device working together.

[0087] like Figure 2 and Figure 3 As shown in the embodiment of this application, the sliding door 2 is a frame structure and includes a first horizontal bar 21 and a first vertical bar 22. The locking mechanism 4 includes a connecting plate 41, a locking hook 42, and a mating part 43. The connecting plate 41 is installed at the bottom of the first horizontal bar 21. The first end of the locking hook 42 movably abuts against the side of the connecting plate 41 away from the first horizontal bar 21, and the second end is slidably disposed on the first vertical bar 22. The mating part 43 is installed on the frame 3. The second end of the locking hook 42 slides along the first vertical bar 22, which can lock or unlock the mating part 43.

[0088] The connecting plate 41 is mounted on the first horizontal bar 21 and located at the bottom of the first horizontal bar 21. The side of the connecting plate 41 facing away from the first horizontal bar 21 abuts against the first end of the locking hook 42, which is the end of the locking hook 42 away from the first vertical bar 22. The abutting relationship between the connecting plate 41 and the first end of the locking hook 42 emphasizes the force between them to ensure that the locking mechanism 4 can be unlocked smoothly when unlocking is required. The second end of the locking hook 42 is slidably mounted on the first vertical bar 22, ensuring that when the locking mechanism 4 is unlocked, there is a certain distance between the second end of the locking hook 42 and the first vertical bar 22. This provides sufficient space for the locking hook 42 to move upwards smoothly, thus enabling the locking mechanism 4 to unlock smoothly. It also ensures that the locking mechanism 4 can be locked normally when it needs to be closed.

[0089] Furthermore, when the locking mechanism 4 is in the closed state, the locking hook 42 and the mating part 43 are engaged and locked. When the locking mechanism 4 needs to be unlocked, it can be unlocked manually. First, lift the second end of the locking hook 42 upwards. At this time, the second end of the locking hook 42 disengages from the mating part 43 and is no longer in contact with it. It then slides upwards along the first vertical bar 22. Then, pull the sliding door 2 open and move it a certain distance before releasing the locking hook 42. At this time, the locking hook 42 will gradually return to being parallel to the first horizontal bar 21 under the influence of gravity. This completes the unlocking of the locking mechanism 4. The locking mechanism 4 effectively locks the sliding door 2 to the fixed door frame, ensuring the safety of the landing door device.

[0090] like Figure 2 and Figure 9 As shown in the embodiment of this application, the locking hook 42 includes a mounting rod 421 and a locking part 422. The mounting rod 421 extends in the same direction as the first horizontal bar 21, and the mounting rod 421 movably abuts against the bottom of the connecting plate 41. The locking part 422 is mounted on the end of the mounting rod 421 and slidably engages with the first vertical bar 22.

[0091] The locking hook 42 consists of a mounting rod 421 and a locking part 422. The mounting rod 421 is set parallel to the first horizontal bar 21, which ensures that the overall structure of the locking hook 42 remains stable when the locking mechanism 4 is locking and unlocking. This avoids the locking mechanism 4 from failing to lock and unlock properly due to an unreasonable setting of the mounting rod 421. The locking part 422 is designed to slide and engage with the first vertical bar 22. This design ensures that the locking hook 42 can move, and there is space between the locking part 422 and the first vertical bar 22 for the locking hook 42 to move. This prevents the locking hook 42 from directly hitting the first vertical bar 22 when moving upwards to unlock, which would cause the locking hook 42 to move but the locking mechanism 4 not to unlock, thus affecting the normal unlocking of the locking mechanism 4. Furthermore, the engaging part 422 is composed of a base plate and two side plates and forms a slot for accommodating the first vertical rod 22. The two side plates limit the range of movement of the engaging part 422, so that when the engaging part 422 engages and locks with the mating part 43, the engaging part 422 and the mating part 43 will not be misaligned too much, which would affect the normal locking and unlocking of the locking mechanism 4.

[0092] like Figure 10 As shown in the embodiment of this application, the mating part 43 is a plate-shaped structure and is located on the side of the first vertical rod 22 away from the mounting rod 421. The mating part 43 is also provided with a buffer block 431 on the side facing the first vertical rod 22.

[0093] In this application, two baffles are arranged on the side of the mating component 43 near the first vertical rod 22. The mating component 43 consists of a horizontal plate and two baffles. The horizontal plate is fixed to the frame 3, and the two baffles are fixed to the horizontal plate and are perpendicular to the horizontal plate. The two baffles and the mating component 43 form a slot for the first vertical rod 22 to enter. In particular, a buffer block 431 is also provided in the slot. The buffer block 431 can be made of rubber material such as a buffer rubber pad, so that when the sliding door 2 closes, the first vertical rod 22 can play a buffering role when it enters the slot, avoiding direct collision between the first vertical rod 22 and the mating component 43, which would damage the locking mechanism 4 and prevent the normal operation of the locking device from being interfered with due to damage to the locking mechanism 4.

[0094] like Figure 2 As shown in the embodiments of this application, both the locking hook 42 and the mating part 43 are hook structures.

[0095] like Figure 9 and Figure 10 As shown, in the locking mechanism 4, the locking hook 42 and the mating part 43 have mutually cooperating hook structures. In this application, it is preferably configured that the locking hook 42 and the mating part 43 are provided with mutually cooperating claws. The bottom end of the side plate of both the locking hook 42 and the engaging part 422 has a protruding first claw 45, and the top of the baffle on the mating part 43 has a second claw 46 of the same design. When the locking mechanism 4 is locked, the first claw 45 and the second claw 46 contact and engage to lock the locking mechanism 4, and the mutually cooperating hook structure effectively ensures the locking effect of the locking mechanism 4.

[0096] like Figure 2 and Figure 11 As shown in the embodiment of this application, the locking mechanism 4 further includes a first buffer assembly 44 connecting the connecting plate 41 and the mounting rod 421. The first buffer assembly 44 includes a first guide rod 441 and a first elastic member 442. Limiting blocks are provided at both ends of the first guide rod 441. The first elastic member 442 is wound around the outer periphery of the first guide rod 441. The first guide rod 441 sequentially moves through the connecting plate 41 and the mounting rod 421. The first elastic member 442 connects the connecting plate 41 and the limiting block located at the top.

[0097] Both the connecting plate 41 and the locking hook 42 have openings for the first guide rod 441 to pass through. The first elastic element 442 is fixed to the first guide rod 441 by a limiting block. When the locking mechanism 4 is unlocked manually, the second end of the locking hook 42 is first lifted upwards. Since the first end of the locking hook 42 abuts against the connecting plate 41 through the first buffer assembly 44, the locking hook 42 will move downwards with the contact point between the connecting plate 41 and the locking hook 42 as the fulcrum. Since the first guide rod 441 connects the locking hook 42 and the connecting plate 41, the first guide rod 441 will also move downwards with the first end of the locking hook 42 and present a certain tilt angle. At this time, the first elastic element 442, which is between the connecting plate 41 and the limiting block at the top, will be compressed under the action of tension. When the sliding door 2 is opened a certain distance, the locking hook 42 is released. Under the action of gravity and the elastic restoring force of the first elastic element 442, the locking hook 42 gradually returns to the state when the locking mechanism 4 is closed. During this process, the first elastic element 442 also gradually springs up and returns to its normal state. In this application, the connecting plate 41 is preferably set as an L-shaped plate. The L-shaped design of the connecting plate 41 helps to ensure the convenience of disassembly and assembly of the first buffer assembly 44.

[0098] like Figure 6 and Figure 7 As shown in the embodiment of this application, the pedal assembly 5 includes a rotating shaft 51 and a self-locking pedal 52. The rotating shaft 51 is rotatably mounted on the bottom of the frame 3, and the self-locking pedal 52 is mounted on the rotating shaft 51. The length direction of the self-locking pedal 52 is consistent with the length direction of the rotating shaft 51. Under the driving action of the flip door 1, the self-locking pedal 52 can swing circumferentially.

[0099] The frame 3 has a protrusion 33 at its bottom, near the construction hoist's flip door 1. The protrusion 33 is located at both ends of the bottom of the frame 3 and has grooves for mounting the rotating shaft 51. After the rotating shaft 51 is placed in the grooves of the two protrusions 33, a mounting plate 34 is installed on the side of the protrusion 33 where the rotating shaft 51 is not placed, using fasteners. The mounting plate 34 also has mounting holes for the rotating shaft 51 to insert into, so that even after the mounting plate 34 is fixed to the protrusion 33, the rotating shaft 51 can still extend into the mounting holes. This allows the mounting plate 34 to restrict the movement of the rotating shaft 51, preventing the self-locking pedal 52 from moving around the rotating shaft 51 and causing it to detach from the grooves of the protrusion 33, thus preventing the pedal assembly 5 from detaching from the frame 3 and affecting the normal operation of the landing door device.

[0100] like Figure 5 , Figure 6 and Figure 8As shown in the embodiment of this application, the frame 3 includes a second horizontal bar 31 and a second vertical bar 32. The self-locking pedal 52 includes a flat part 521 and flanges 522 provided on both sides of the flat part 521. The two flanges 522 and the flat part 521 form a space covering the second horizontal bar 31. The bottom end of the first vertical bar 22 is also provided with a guide sliding assembly 23. When the flip door 1 drives the flat part 521 to swing to a horizontal position, the guide sliding assembly 23 can slide along the flat part 521.

[0101] When the flap door 1 of the construction hoist presses down on the self-locking pedal 52, as the flap door 1 gradually presses down on the self-locking pedal 52, the self-locking pedal 52 swings circumferentially around the rotation axis 51 towards the second crossbar 31, and finally flattens the self-locking pedal 52 on the second crossbar 31. At this time, a space covering the second crossbar 31 is formed between the two flanges 522 and the flat surface 521 of the self-locking pedal 52. At this point, the first locking of the landing door device is released, that is, the restriction of the pedal assembly 5 on the sliding door 2 is released. After the second locking between the door frame and the sliding door 2 at the locking mechanism 4 is released by manual unlocking, the guide sliding assembly 23 installed on the first vertical bar 22 can slide along the flat surface 521, thereby driving the sliding door 2 to move and pull open the sliding door 2, realizing the opening of the landing door device.

[0102] If the self-locking pedal 52 is not pressed flat onto the second horizontal bar 31 but remains raised at a certain height, the guide sliding component 23 at the bottom of the first vertical bar 22 will not be able to slide along the length of the second horizontal bar 31. This is because the flip door 1 will obstruct the movement of the guide sliding component 23. Thus, when the guide sliding component 23 is obstructed, the landing door device will not be able to open normally.

[0103] like Figure 6 and Figure 8 As shown, in the embodiments of this application, the guide sliding assembly 23 includes a support base 231 and a guide wheel 232. The support base 231 is installed at the bottom end of the first vertical rod 22, and the guide wheel 232 is installed on the support base 231 and located above the second horizontal rod 31. One end of the flat portion 521 is provided with a clearance opening 523 to avoid the guide wheel 232.

[0104] The guide wheel 232 is mounted on the support base 231 and located above the second crossbar 31. A certain distance is left between the guide wheel 232 and the second crossbar 31 so that after the flat part 521 of the self-locking pedal 52 is pressed against the second crossbar 31, the guide wheel 232 can still slide on the flat part 521 of the self-locking pedal 52. Furthermore, a clearance opening 523 for avoiding the guide wheel 232 is provided on the side of the flat part 521 of the self-locking pedal 52 near the guide sliding assembly 23. This ensures that the self-locking pedal 52 will not interfere with the guide wheel 232 when the flip door 1 is pressed on it, so that the self-locking pedal 52 can smoothly avoid the guide wheel 232 and achieve circumferential rotation, avoiding the situation where the self-locking pedal 52 cannot be pressed down, which would affect the normal opening of the landing door device.

[0105] like Figure 6 As shown in the embodiments of this application, the guide sliding assembly 23 further includes a limiting wheel 233, which is mounted on the support base 231 and located above the self-locking pedal 52. The self-locking pedal 52 can swing between the second crossbar 31 and the limiting wheel 233.

[0106] When the landing door device is closed, the flip door 1 moves away from the self-locking pedal 52 and approaches the cage of the construction hoist. The self-locking pedal 52 will return to the state before the flip door 1 is pressed against the self-locking pedal 52. At this time, the limiting wheel 233 on the support seat 231 can limit the range of motion of the self-locking pedal 52 to prevent the self-locking pedal 52 from falling to the side closer to the flip door 1 due to excessive lifting, which would prevent the flip door 1 from unlocking normally when it needs to press the self-locking pedal 52 again to unlock the landing door device.

[0107] like Figure 6 As shown in the embodiment of this application, the pedal assembly 5 further includes a mounting base 53, a second buffer assembly 54, and a connecting cover plate 55. An ear plate 321 is provided at the bottom of the second vertical rod 32. The second buffer assembly 54 movably passes through the ear plate 321 and connects to the mounting base 53. The connecting cover plate 55 covers the mounting base 53, with one end connected to the flat portion 521 and the other end pivotally connected to the mounting base 53. The second buffer assembly 54, the mounting base 53, and the connecting cover plate 55 are all arranged on the same side as the self-locking pedal 52.

[0108] A lug plate 321 is provided at the bottom of the second vertical rod 32. A second buffer assembly 54 is connected to the opening of the lug plate 321. The bottom end of the buffer assembly is connected to the mounting base 53, and a connecting cover plate 55 connects the self-locking pedal 52 to the mounting base 53. When the flip door 1 presses against the self-locking pedal 52, the self-locking pedal 52 gradually flattens on the second horizontal rod 31. The connecting cover plate 55 connected to the self-locking pedal 52 is also subjected to tension, pulling the mounting base 53 downwards, thereby causing the second buffer assembly 54 to move downwards. Because the second buffer assembly 54 has elastic restoring force, when the flip door 1 leaves the self-locking pedal 52, the mounting base 53 connected to the second buffer assembly 54 is subjected to force and moves upwards. This force is transmitted to the self-locking pedal 52 through the connecting cover plate 55, causing the self-locking pedal 52 to move upwards around the rotation axis 51.

[0109] like Figure 5 and Figure 7 As shown, one end of the connecting cover plate 55 is pivotally connected to the mounting base 53. A relief portion is formed in the middle of the connecting cover plate 55. The relief portion is protruding. The purpose is to allow the connecting cover plate 55 to avoid the protrusion 33 provided at the end of the second crossbar 31 during the movement of the connecting cover plate 55 with the self-locking pedal 52. This prevents the connecting cover plate 55 from getting stuck and unable to move due to an unsuitable shape, which would interfere with the normal operation of the pedal assembly 5 and thus affect the opening and closing of the landing door device.

[0110] like Figure 6 As shown in the embodiment of this application, the second buffer assembly 54 includes a second guide rod 541 and a second elastic member 542. Limiting blocks are provided at both ends of the second guide rod 541. The second elastic member 542 is wound around the outer periphery of the second guide rod 541. The second guide rod 541 movably passes through the ear plate 321. The second elastic member 542 is mounted on the mounting base 53 and connects the ear plate 321 and the limiting block located at the top.

[0111] In this application, the second elastic element 542 is preferably a spring. The spring is installed between the limiting block and the ear plate 321 at the top of the second guide rod 541. When the flip door 1 presses against the self-locking pedal 52, it causes the connecting cover plate 55 to apply a downward pulling force to the mounting base 53, causing the second guide rod 541 to move downward. At this time, the spring is compressed and is in a compressed state. When the flip door 1 leaves the self-locking pedal 52 and the pressure on the self-locking pedal 52 disappears, due to the elastic restoring force of the spring, the spring will gradually return to its state before compression, thereby causing the second guide rod 541 to move upward and pull the connecting cover plate 55, so that the self-locking pedal 52, which is fixed to the connecting cover plate 55, is lifted upward.

[0112] like Figure 1 and Figure 7As shown in the embodiments of this application, the floor door device further includes a guide door frame 6, which is installed on the fixed door frame and arranged parallel to the sliding door 2. The guide door frame 6 is provided with a plurality of sliding members 61 that slide in cooperation with the sliding door 2.

[0113] The guide frame 6 consists of multiple vertical railings and horizontal railings. Multiple sliding members 61 are arranged at equal intervals on the vertical railings of the guide frame 6. The interval between two sliding members 61 on the same vertical railing is set to be just enough for the sliding door 2 to enter, and to ensure that the sliding door 2 will not detach from the guide frame 6 during the assisted movement of the multiple sliding members 61.

[0114] The guide frame 6 is mounted on the second vertical bar 32, and other railings fixed to the ground are welded to the guide frame 6 to assist in its fixation and maintain a certain structural strength. The guide frame 6 is arranged parallel to the sliding door 2, ensuring they are on the same plane. The guide frame 6 assists the sliding door 2 in moving along the length of the second horizontal bar 31, allowing it to slide stably in a fixed direction.

[0115] like Figure 1 , Figure 4 and Figure 5 As shown in the embodiments of this application, the landing door device further includes a limit switch 62 and a control unit. The limit switch 62 is installed on the guide door frame 6. During the sliding door 2's movement, the limit switch 62 can send a position signal. The control unit is electrically connected to the limit switch 62, and the control unit controls the power supply or de-energization of the construction hoist according to the position signal.

[0116] When the landing door device is opened, the flip door 1 presses against the self-locking pedal 52, unlocking the locking mechanism 4. The sliding door 2 then moves along the length of the second crossbar 31. When the sliding door 2 contacts the limit switch 62, the limit switch 62 sends a position signal, which is transmitted to the control unit of the construction hoist, preventing the construction hoist from moving up and down due to power failure, thus ensuring the safety of the landing door device. When the landing door device is closed, the double locking is complete and the limit switch 62 is no longer in contact with the sliding door 2. At this time, the control unit on the construction hoist receives the position signal and reconnects the power supply to the construction hoist, allowing it to resume normal operation.

[0117] Specifically, the elevator cannot be unlocked during operation, and the cage cannot operate if the cage door is not closed or the locking mechanism 4 is not locked.

[0118] Furthermore, this application also proposes a mechanical linkage system, including a construction hoist cage and a landing door device as described above. Since the mechanical linkage system employs all embodiments of the landing door device, it also possesses all the beneficial effects of the landing door device, which will not be elaborated upon here.

[0119] In particular, since construction hoists are generally equipped with two cages, and the cages need to work in conjunction with the landing door devices, the two landing door devices on the same floor should be arranged in a mirror image to avoid the possibility of the sliding doors 2 interfering with each other during the opening process.

[0120] Those skilled in the art will understand that this application is not limited to the aforementioned landing door device that works in conjunction with the cage of a construction hoist. It may also include other structural forms that use the locking mechanism of the landing door device and the self-locking structure of the pedal or similar structures to control the landing door. Other structural forms that lock the landing door device from different directions should also be within the scope of protection of this application.

[0121] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0122] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0123] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0124] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A landing door device, which is linked to the cage of a construction hoist, wherein the cage is provided with a swingable flap door (1), characterized in that, The landing door device includes: A fixed door frame includes a frame (3) and a pedal assembly (5) installed at the bottom of the frame (3), the pedal assembly (5) being disposed near the flip door (1); A sliding door (2), the sliding door (2) being arranged parallel to the fixed door frame, the sliding door (2) being capable of sliding relative to the fixed door frame; and Locking mechanism (4) is used to lock or unlock the sliding door (2) and the frame (3); The flip door (1) is used to drive the pedal assembly (5) to swing circumferentially so that the sliding door (2) and the pedal assembly (5) are locked or unlocked.

2. The landing door device according to claim 1, characterized in that, The sliding door (2) is a frame structure and includes a first horizontal bar (21) and a first vertical bar (22). The locking mechanism (4) includes: A connecting plate (41) is installed at the bottom of the first crossbar (21); A locking hook (42) has its first end movably abutting against the side of the connecting plate (41) away from the first horizontal bar (21), and its second end slidably mounted on the first vertical bar (22); and The fitting (43) is installed on the frame (3). The second end of the locking hook (42) slides along the first vertical rod (22) to lock or unlock the fitting (43).

3. The landing door device according to claim 2, characterized in that, The locking hook (42) includes: The mounting rod (421) extends in the same direction as the first crossbar (21), and the mounting rod (421) movably abuts against the bottom of the connecting plate (41); and The engaging part (422) is installed at the end of the mounting rod (421) and slidably engaged with the first vertical rod (22).

4. The landing door device according to claim 3, characterized in that, The mating component (43) is a plate-shaped structure and is located on the side of the first vertical rod (22) away from the mounting rod (421). The mating component (43) is also provided with a buffer block (431) on the side facing the first vertical rod (22).

5. The landing door device according to claim 2, characterized in that, Both the locking hook (42) and the mating part (43) are hook structures.

6. The landing door device according to claim 3, characterized in that, The locking mechanism (4) further includes a first buffer assembly (44) connecting the connecting plate (41) and the mounting rod (421), the first buffer assembly (44) comprising: The first guide rod (441) has limit blocks at both ends; and A first elastic element (442) is arranged around the outer periphery of the first guide rod (441). The first guide rod (441) moves through the connecting plate (41) and the mounting rod (421) in sequence. The first elastic element (442) is connected between the connecting plate (41) and the limiting block located at the top.

7. The landing door device according to any one of claims 2 to 6, characterized in that, The pedal assembly (5) includes: A rotating shaft (51) is rotatably mounted on the bottom of the frame (3); and The self-locking pedal (52) is installed on the rotating shaft (51). The length direction of the self-locking pedal (52) is consistent with the length direction of the rotating shaft (51). Under the driving action of the flip door (1), the self-locking pedal (52) can swing in a circumferential direction.

8. The landing door device according to claim 7, characterized in that, The frame (3) includes a second horizontal bar (31) and a second vertical bar (32). The self-locking pedal (52) includes a flat part (521) and flanges (522) on both sides of the flat part (521). A space is formed between the two flanges (522) and the flat part (521) to cover the second horizontal bar (31). The bottom end of the first vertical bar (22) is also provided with a guide sliding assembly (23). When the flip door (1) drives the flat part (521) to swing to a horizontal position, the guide sliding assembly (23) can slide along the flat part (521).

9. The landing door device according to claim 8, characterized in that, The guide sliding assembly (23) includes: A support base (231) is installed at the bottom end of the first vertical rod (22); The guide wheel (232) is mounted on the support base (231) and located above the second crossbar (31). One end of the flat part (521) is provided with a clearance opening (523) to avoid the guide wheel (232).

10. The landing door device according to claim 9, characterized in that, The guide sliding assembly (23) further includes: A limiting wheel (233) is mounted on the support base (231) and located above the self-locking pedal (52), which is capable of swinging between the second crossbar (31) and the limiting wheel (233).

11. The landing door device according to claim 8, characterized in that, The pedal assembly (5) also includes: Mounting base (53); The second buffer assembly (54) has an ear plate (321) at the bottom of the second vertical rod (32), and the second buffer assembly (54) movably passes through the ear plate (321) and is connected to the mounting base (53); and A connecting cover plate (55) is placed on the mounting base (53). One end of the connecting cover plate (55) is connected to the flat part (521), and the other end is pivotally connected to the mounting base (53). The second buffer assembly (54), the mounting base (53), and the connecting cover plate (55) are all arranged on the same side as the self-locking pedal (52).

12. The landing door device according to claim 11, characterized in that, The second buffer component (54) includes: The second guide rod (541) has limit blocks at both ends; and The second elastic element (542) is arranged around the outer periphery of the second guide rod (541), the second guide rod (541) movably passes through the ear plate (321), the second elastic element (542) is installed on the mounting base (53), and the second elastic element (542) is connected between the ear plate (321) and the limiting block located at the top.

13. The landing door device according to any one of claims 1 to 6, characterized in that, The landing door device further includes: A guide frame (6) is installed on the fixed frame and arranged parallel to the sliding door (2). The guide frame (6) is provided with a plurality of sliding parts (61) that slide in cooperation with the sliding door (2).

14. The landing door device according to claim 13, characterized in that, The landing door device further includes: A limit switch (62) is installed on the guide door frame (6). During the sliding door (2) movement, the limit switch (62) can send a position signal; and The control unit is electrically connected to the limit switch (62) and is used to control the power supply or power cut-off of the construction hoist according to the position signal.

15. A mechanical linkage system, comprising: The cage of a construction hoist; and The door device according to any one of claims 1 to 14.

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