Basement sliding door

Abstract

The utility model relates to a basement translation door, which solves the problems that the prior art affects walking on roads, has potential safety hazards, cannot bear larger load, cannot be closed and the like, and adopts the technical scheme that the basement translation door comprises a door frame and a basement door matched with the door frame, and is characterized in that the basement door comprises lifting door plates on two sides; the two translation door plates are arranged between the two lifting door plates, when the two translation door plates are closed, the two lifting door plates are in a lifting state, and the top surfaces of the two lifting door plates are flush with the top surfaces of the two translation door plates and can be flush with the surrounding ground, so that the top of the basement is closed and forms a part of the ground for passing; and the two translation door plates move back to back into the space which is avoided from the top after the two lifting doors fall, so that the basement door is opened and used for taking and placing objects into the basement. The underground garage has the advantages of being beneficial to passing, having enough bearing capacity, being beneficial to improving use safety, and meanwhile being convenient to use in the underground garage.

Description

Technical Field

[0001] This utility model relates to the field of machinery, and in particular to a basement sliding door. Background Technology

[0002] Currently, large basement doors are generally roller shutters or flip-up doors. Typically, a transition passage is dug at the corresponding location on the ground floor above the basement, with the basement door located in the rear half of this passage, while the front half remains open. The problems with existing basement doors include: 1. The open transition passage obstructs ground-level traffic, affecting pedestrian and vehicular passage, and also posing a risk of people falling. 2. When the height of items inside the basement exceeds its depth, the basement door cannot be closed, negatively impacting the safe and stable storage of items. 3. Basement doors have weak load-bearing capacity and cannot withstand heavy loads. 4. As the width of the basement door increases, its weight also increases, easily causing the middle section to sag and dent, affecting not only the retrieval of objects (such as goods, items, or equipment) but also potentially preventing the door from closing completely. Summary of the Invention

[0003] The purpose of this utility model is to solve the above-mentioned problems existing in the prior art by providing a basement sliding door. Through the cooperation of two sliding door panels and two side lifting door panels, when the basement top opening is closed, the top surfaces of the two lifting door panels are flush with the top surfaces of the two sliding door panels and can be flush with the surrounding ground, thus sealing the basement top and forming part of the ground for passage. When it is necessary to open the basement top opening, after the two lifting doors descend, the space cleared at the top allows the two sliding door panels to open and move into the cleared space, opening the basement door for taking and placing objects into the basement. This design facilitates passage, has sufficient load-bearing capacity, improves safety, and is convenient for basement use.

[0004] The above-mentioned technical objective of this utility model is mainly achieved through the following technical solution: a basement sliding door, including a door frame and a basement door that cooperates with the door frame, characterized in that the basement door includes lifting door panels on both sides and two sliding door panels disposed between the two lifting door panels. When the two sliding door panels are closed, the two lifting door panels are in a raised state, and the top surfaces of the two lifting door panels are flush with the top surfaces of the two sliding door panels and can be flush with the surrounding ground, so that the top of the basement is closed and forms part of the ground for passage. When the two lifting door panels are in a lowered state, the space cleared at the top after the two lifting doors are lowered allows the two sliding door panels to open and move into the cleared space, so that the basement door is opened for taking and placing objects into the basement. This technical solution utilizes two sliding door panels and two lifting door panels on both sides to cooperate in closing the top opening of the basement. When the top opening of the basement is closed, the top surfaces of the two lifting door panels are flush with the top surfaces of the two sliding door panels and can be flush with the surrounding ground, thus sealing the top of the basement and forming part of the ground for passage. When it is necessary to open the top opening of the basement, the two lifting doors descend and create space at the top. The two sliding door panels open and move into the space, thus opening the basement door for taking objects into and out of the basement. This solution facilitates passage, has sufficient load-bearing capacity, improves safety, and makes the basement easier to use.

[0005] As a further improvement and supplement to the above technical solution, this utility model adopts the following technical measures: Several sets of spaced-apart lifting mechanisms are arranged below each of the lifting door panels. Each set of lifting mechanisms includes a first power source and at least two telescopic support rods driven by the first power source. The first power source is used to drive the telescopic support rods to extend to raise the lifting door panel and provide support, or to drive the telescopic support rods to retract to lower the lifting door panel. The lifting mechanism is used to raise and lower the lifting door panel, and also to limit the descent of the lifting door panel. The lifting mechanism is located below the lifting door panel and activates a support and limiting function. When the lifting door panel is overloaded or the lifting mechanism malfunctions and the lifting door panel cannot rise, a recessed area is formed in the corresponding area of ​​the lifting door panel. The limiting function of the lifting mechanism ensures that the depth of the recessed area is not too deep, but only the depth corresponding to the lifting range of the lifting door panel, preventing vehicles or pedestrians above from falling directly to the bottom of the parking garage, thus improving safety to a certain extent.

[0006] Preferably, each of the lifting door panels is provided with several sets of safety mechanisms underneath. These safety mechanisms support the lifting door panel in the raised state, improving its load-bearing capacity. When the lifting door panel descends, the safety mechanisms avoid the descent path, ensuring a smooth descent. The safety mechanisms further enhance the safety of the lifting door panels, ensuring the safety of pedestrians and vehicles. The safety mechanisms primarily support the lifting door panel in its raised position, maintaining it flush with the ground and the sliding door panel, facilitating safe and smooth passage for pedestrians and vehicles. In practical applications, three sets of safety mechanisms are provided under each lifting door panel, located on the three adjacent sides of the lifting door panel and avoiding the side corresponding to the sliding door panel. This ensures support for the lifting door panel while facilitating its sliding movement.

[0007] Preferably, the safety mechanism includes a base, a support body pivotally connected to the base at its lower end, a second power source driving the support body to rotate, the support body being an elongated strip that widens from bottom to top, a support groove being provided at the upper end of the support body, an upwardly extending blocking wall being provided on the outer side of the upper end of the support body, the outer end of the lifting door panel being embedded in the support groove, the blocking wall being used to abut against the side wall of the outer end of the lifting door panel, and the bottom wall of the support groove being supported by the bottom wall of the outer end of the lifting door panel.

[0008] Preferably, the basement sliding door also includes a third power source, a sliding mechanism driven by the third power source. This mechanism moves the two sliding door panels, causing them to move back-to-back to open the upper part of the basement; or to move towards each other to close the upper part of the basement. Simultaneous driving of the two sliding door panels by the third power source facilitates efficient opening of the upper port of the basement by moving the two sliding door panels, or efficient closing of the upper port by moving the two sliding door panels.

[0009] Preferably, the translation mechanism further includes left- and right-hand rotating lead screws driven by the third power source, and several lead screw nuts disposed on the left- and right-hand rotating lead screws. The lead screw nuts are respectively fixed to the bottom of the two sliding door panels. The rotation of the left- and right-hand rotating lead screws causes the corresponding lead screw nuts to move in opposite directions, thereby driving the two sliding door panels to move in opposite directions, or causes the corresponding lead screw nuts to move in opposite directions, thereby driving the two sliding door panels to move in opposite directions. Using left- and right-hand rotating lead screws allows for simultaneous back-to-back translation for opening or simultaneous front-to-back translation for closing, resulting in high operational accuracy, reliable operation, and a relatively simple structure. This helps ensure the long-term stable operation of the third power source and reduces the failure rate.

[0010] Preferably, the translation mechanism further includes two connecting shafts driven by the third power source, two steering mechanisms respectively disposed at the outer ends of the two connecting shafts, and two left and right rotating lead screws. Each steering mechanism is connected to a corresponding left and right rotating lead screw. The two connecting shafts are respectively disposed on both sides of the third power source and are located on the same straight line, so that the two left and right rotating lead screws respectively cooperate with the two sides of the two sliding door panels. A set of third power sources simultaneously drives the two connecting shafts, and the connecting shafts respectively cooperate with the steering mechanisms to transmit the power of the third power source to the two left and right rotating lead screws. The two left and right rotating lead screws are respectively disposed on both sides of the sliding door panels. The left and right rotating lead screws, together with their corresponding lead screw nuts, drive the two sliding door panels to perform corresponding actions synchronously, realizing the opening and closing of the door. The overall structure of the translation mechanism is ingeniously designed, relatively simple, and operates stably and reliably.

[0011] Preferably, the basement sliding door also includes a locking mechanism for closing and locking the two sliding door panels. The locking mechanism prevents the two sliding door panels from accidentally opening when closed, improving safety and preventing pedestrians or vehicles from falling into the basement from accidentally opened sliding door panels and sustaining injury or damage.

[0012] Preferably, the locking mechanism includes a fourth power source, a guide sleeve that cooperates with the output end of the fourth power source, a locking shaft disposed within the guide sleeve, and a wedge-shaped opening with a smaller bottom and a larger top at the outer end of the locking shaft. The side walls of the two sliding door panels each have a wedge-shaped portion, with the wedge-shaped portion being smaller on the outside and larger on the inside. The inclined surfaces on the wedge-shaped portions of the two sliding door panels are arranged facing away from each other. The fourth power source is used to cause the locking shaft to extend and retract. When the locking shaft extends, it is used to insert the two wedge-shaped portions into the wedge-shaped opening to form a locking engagement. When the locking shaft retracts, the two wedge-shaped portions are released from the restriction of the locking shaft, and the two sliding door panels can be separated.

[0013] Preferably, the sliding door panel is provided with a supplementary notch and a supplementary plate that mates with the supplementary notch. The shape of the supplementary plate is adapted to the shape of the supplementary notch. A switching mechanism is provided at the bottom of the supplementary plate and the bottom of the sliding door panel. The switching mechanism includes a fifth power source and a swing arm that mates with the fifth power source. The swinging end of the swing arm is fixed to the bottom of the supplementary plate. A connecting seat is provided at the bottom of the sliding door panel. The driving end of the swing arm is connected to the connecting seat. The fifth power source drives the swing arm to swing at the intersection point on the connecting seat, causing the supplementary plate to swing upward to close the supplementary notch and swing downward to open the supplementary notch. The supplementary notch is designed to facilitate the placement of equipment or items whose partial height is greater than the depth of the basement in the basement, thereby increasing the usability and utilization rate of the basement. When equipment or items whose partial height is greater than the depth of the basement are placed in the basement, the supplementary notch is opened, allowing the portion to extend upward from the notch. To further improve the applicability of the basement, the location of the supplementary notch can be set according to the actual situation.

[0014] The beneficial effects of this utility model are as follows: 1. By cooperating with two sliding door panels and two lifting door panels on both sides, when the top opening of the basement is closed, the top surfaces of the two lifting door panels are flush with the top surfaces of the two sliding door panels and can be flush with the surrounding ground, so that the top of the basement is closed and forms part of the ground for passage. When it is necessary to open the top opening of the basement, after the two lifting doors are lowered, the space cleared at the top is used by the two sliding door panels to open and move into the cleared space, so that the basement door is opened for taking and putting objects into the basement. This is not only conducive to passage, but also has sufficient load-bearing capacity, which helps to improve the safety of use, and also makes the basement convenient to use. 2. The lifting mechanism is used to raise and lower the sliding door panels, and also to limit their descent. Located below the sliding door panels, the lifting mechanism acts as a support limiter. When the sliding door panel is overloaded or the lifting mechanism malfunctions and cannot rise, a recessed area is formed in the corresponding area. The lifting mechanism's limit ensures the recessed area is not too deep, remaining only at the depth corresponding to the door panel's rise and fall, preventing vehicles or pedestrians from falling directly to the bottom of the parking garage, thus improving safety to a certain extent. 3. The safety mechanism mainly supports the sliding door panels in their raised position, ensuring they remain flush with the ground and sliding door panels, facilitating safe passage for pedestrians and vehicles. 4. The locking mechanism prevents the two sliding door panels from accidentally opening when closed, improving safety and preventing pedestrians or vehicles from falling into the parking garage and sustaining injury or damage. 5. The supplementary gap allows for the placement of equipment or items whose local height exceeds the depth of the parking garage, increasing the usable area and utilization rate of the parking garage. When equipment or items whose partial height exceeds the depth of the basement are placed in the basement, a supplementary notch is opened, allowing the part to extend upwards through the notch. To further improve the basement's usability, the location of the supplementary notch can be set according to the actual situation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 Is Figure 1 A structural diagram showing a hidden lifting door panel on top of the existing structure.

[0017] Figure 3 Is Figure 2 This is a structural diagram that hides the sliding door panel on the same side.

[0018] Figure 4 This is a schematic diagram of a translation mechanism involved in this utility model.

[0019] Figure 5This is a schematic diagram of a locking structure that cooperates with a sliding door panel, which is involved in this utility model.

[0020] Figure 6 This is a cross-sectional view of the locking structure and sliding door panel involved in this utility model.

[0021] Figure 7 yes Figure 6 The diagram shows a partially enlarged structural diagram corresponding to the cooperation between the locking structure and the sliding door panel.

[0022] Figure 8 This is a schematic diagram of the structure of the patch plate and the driving mechanism that drives the patch plate in this utility model.

[0023] Figure 9 yes Figure 8 A schematic diagram of a structure viewed from below.

[0024] In the diagram: 1. Door frame; 2. Lifting door panel; 3. Sliding door panel; 4. First power source; 5. Telescopic support rod; 6. Safety mechanism; 7. Base; 8. Support body; 9. Support groove; 10. Blocking wall; 11. Third power source; 12. Left and right rotating screws; 13. Connecting shaft; 14. Steering mechanism; 15. Fourth power source; 16. Guide sleeve; 17. Locking shaft; 18. Wedge-shaped part; 19. Wedge opening; 21. Compensating plate; 22. Swing arm; 23. Link seat; 24. Inspection port; 25. Personnel entry window; 26. Sliding support guide rail. Detailed Implementation

[0025] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0026] Example: Figures 1-9 As shown, a basement sliding door includes a door frame 1 and a basement door that cooperates with the door frame 1.

[0027] The difference between this technical solution and the prior art is that: the basement door includes two lifting door panels 2 on both sides and two sliding door panels 3 disposed between the two lifting door panels 2. When the two sliding door panels 3 are closed, the two lifting door panels 2 are in the raised state, and the top surfaces of the two lifting door panels 2 are flush with the top surfaces of the two sliding door panels 3 and can be flush with the surrounding ground, so that the top of the basement is closed and forms part of the ground for passage. When the two lifting door panels 2 are in the lowered state, the space cleared at the top after the two lifting doors are lowered allows the two sliding door panels 3 to open and move into the cleared space, so that the basement door is opened for taking and placing objects into the basement.

[0028] In this technical solution, the two sliding door panels 3 and the two lifting door panels 2 on both sides cooperate with each other to close the top opening of the basement. When the top surface of the two lifting door panels 2 is closed, it is flush with the top surface of the two sliding door panels 3 and can be flush with the surrounding ground, so that the top of the basement is closed and forms part of the ground for passage. When it is necessary to open the top opening of the basement, the two lifting doors descend and the space cleared at the top is used by the two sliding door panels 3 to open and move into the cleared space, so that the basement door is opened for taking and putting objects into the basement. This not only facilitates passage but also has sufficient load-bearing capacity, which helps to improve the safety of use and also makes the basement convenient to use.

[0029] In practical applications, in order to make the sliding door panel 3 move more smoothly and help reduce the load on the sliding door panel 3 during the movement, a sliding support guide rail 26 is provided at the bottom of each sliding door panel 3. The sliding support guide rail 26 has rollers, which can effectively reduce the actual load on the sliding door panel 3 during the movement.

[0030] The following are further improvements to the above technical solution:

[0031] In practical applications, several sets of spaced lifting mechanisms are provided below each of the lifting door panels 2. Each set of lifting mechanisms includes a first power 4 and at least two telescopic support rods 5 driven by the first power 4. The first power 4 is used to drive the telescopic support rods 5 to extend to raise the lifting door panel 2 and provide support, or to drive the telescopic support rods 5 to retract to lower the lifting door panel 2.

[0032] In this technical solution, the lifting mechanism is used to raise and lower the lifting door panel 2, and at the same time, it is used to limit the descent of the lifting door panel 2. The lifting mechanism is located below the lifting door panel 2 and activates the support and limiting function. When the lifting door panel 2 is overloaded or the lifting mechanism malfunctions and the lifting door panel 2 cannot rise, a recessed area is formed in the corresponding area of ​​the lifting door panel 2. The limiting function of the lifting mechanism ensures that the depth of the recessed area is not too deep, but only the depth corresponding to the lifting range of the lifting door panel 2, thus preventing vehicles or pedestrians above from falling directly to the bottom of the underground parking garage, which can improve safety to a certain extent.

[0033] In practical applications, several sets of safety mechanisms 6 are provided below each of the lifting door panels 2. The safety mechanisms 6 are used to support the lifting door panels 2 in the raised state and to improve the load-bearing capacity of the lifting door panels 2. When the lifting door panels 2 are lowered, the safety mechanisms 6 avoid the lowering channel of the lifting door panels 2, so that the lifting door panels 2 can be lowered smoothly.

[0034] In this technical solution, the safety mechanism 6 is designed to further improve the safety of the lifting door panel 2 and ensure the safety of pedestrians and vehicles.

[0035] In this technical solution, the safety mechanism 6 is mainly used to support the raised door panel 2 in its final position, ensuring that it remains flush with the ground and the sliding door panel 3, facilitating the smooth and safe passage of pedestrians and vehicles. In practical applications, three sets of safety mechanisms 6 are installed below each of the raised door panels 2, respectively on the three adjacent sides of the raised door panel 2, avoiding the side corresponding to the sliding door panel 3. This ensures support for the raised door panel 2 while facilitating the sliding of the sliding door panel 3.

[0036] In practical applications, the safety mechanism 6 includes a base 7, a support body 8 pivotally connected to the base 7 at its lower end, a second power source driving the support body 8 to rotate, the support body 8 being an elongated strip that widens from bottom to top, a support groove 9 being provided at the upper end of the support body 8, and an upwardly extending blocking wall 10 being provided on the outer side of the upper end of the support body 8, the outer end of the lifting door panel 2 being embedded in the support groove 9, the blocking wall 10 being used to abut against the side wall of the outer end of the lifting door panel 2, and the bottom wall of the support groove 9 being supported by the bottom wall of the outer end of the lifting door panel 2.

[0037] In this technical solution, the base 7 on the safety mechanism 6 can be fixed to the corresponding part on the ground or to the door frame 1.

[0038] In practical applications, the basement sliding door also includes a third power source 11, which drives a sliding mechanism. This mechanism moves the two sliding door panels 3, causing them to move back-to-back to open the upper part of the basement; or to move towards each other to close the upper part of the basement. Simultaneous driving of the two sliding door panels 3 by the third power source 11 facilitates efficient opening of the upper port of the basement by moving the two sliding door panels 3, or efficient closing of the upper port by closing the two sliding door panels 3.

[0039] In practical applications, the translation mechanism also includes left and right rotating lead screws 12 driven by the third power 11, and a plurality of lead screw nuts disposed on the left and right rotating lead screws 12. The lead screw nuts are respectively fixed to the bottom of the two sliding door panels 3. The rotation of the left and right rotating lead screws 12 is used to make the corresponding lead screw nuts move in opposite directions to drive the two sliding door panels 3 to move in opposite directions, or to make the corresponding lead screw nuts move towards each other to drive the two sliding door panels 3 to move towards each other.

[0040] In this technical solution, the left and right rotating lead screw 12 can realize the simultaneous back-to-back translation of the two sliding door panels 3 for opening or simultaneous front-to-back translation for closing. It has high operating accuracy and reliable operation, and the structure is relatively simple. It is conducive to ensuring that the third power 11 maintains stable operation for a long time and reducing the failure rate.

[0041] In practical applications, the translation mechanism also includes two connecting shafts 13 driven by the third power 11, two steering mechanisms 14 respectively disposed at the outer ends of the two connecting shafts 13, two left and right rotating lead screws 12, each steering mechanism 14 being connected one-to-one with the corresponding left and right rotating lead screw 12, the two connecting shafts 13 being disposed on both sides of the third power 11 and located on the same straight line, so that the two left and right rotating lead screws 12 respectively cooperate with the two sides of the two translation door panels 3.

[0042] In this technical solution, a third power source 11 simultaneously drives two connecting shafts 13. These connecting shafts 13 then correspond one-to-one with the steering mechanism 14, transmitting the power from the third power source 11 to two left and right rotating lead screws 12. These two lead screws 12 are respectively positioned on both sides of the sliding door panel 3. The left and right rotating lead screws 12, along with their corresponding screw nuts, drive the two sliding door panels 3 to perform synchronized actions, thus opening and closing the door. The overall structure of the sliding mechanism is ingeniously designed, relatively simple, and operates stably and reliably.

[0043] In practical applications, the basement sliding door also includes a locking mechanism, which is used to close and lock the two sliding door panels 3.

[0044] In this technical solution, the locking mechanism is designed to prevent the two sliding door panels 3 from being accidentally opened when they are closed. This improves safety and prevents pedestrians and vehicles from falling into the underground parking garage and getting injured or damaged when they accidentally open the sliding door panels 3.

[0045] In practical applications, the locking mechanism includes a fourth power source 15, a guide sleeve 16 that cooperates with the output end of the fourth power source 15, a locking shaft 17 disposed within the guide sleeve 16, and a wedge-shaped opening 19 with a smaller bottom and a larger top at the outer end of the locking shaft 17. The side walls of the two sliding door panels 3 each have a wedge-shaped portion 18, which is smaller on the outside and larger on the inside. The inclined surfaces of the wedge-shaped portions 18 on the two sliding door panels 3 are arranged facing away from each other. The fourth power source 15 is used to make the locking shaft 17 extend and retract. When the locking shaft 17 extends, it is used to make the two wedge-shaped portions 18 insert into the wedge-shaped opening 19 to form a locking engagement. When the locking shaft 17 retracts, the two wedge-shaped portions 18 are released from the restriction of the locking shaft 17, and the two sliding door panels 3 can be separated.

[0046] In practical applications, the sliding door panel 3 is provided with a supplementary notch and a supplementary plate 21 that cooperates with the supplementary notch. The shape of the supplementary plate 21 is adapted to the shape of the supplementary notch. A switching mechanism is provided at the bottom of the supplementary plate 21 and the bottom of the sliding door panel 3. The switching mechanism includes a fifth power source and a swing arm 22 that cooperates with the fifth power source. The swing end of the swing arm 22 is fixed to the bottom of the supplementary plate 21. A connecting seat 23 is provided at the bottom of the sliding door panel 3. The driving end of the swing arm 22 is connected to the connecting seat 23. The fifth power source drives the swing arm 22 to swing at the intersection point on the connecting seat 23, so that the supplementary plate 21 swings up to close the supplementary notch and swings down to open the supplementary notch.

[0047] In this technical solution, the supplementary notch is designed to facilitate the placement of equipment or items whose partial height exceeds the basement depth, thereby increasing the usability and utilization rate of the basement. When equipment or items with a partial height exceeding the basement depth are placed in the basement, the supplementary notch is opened, allowing the portion to extend upwards through it. To further enhance the basement's applicability, the location of the supplementary notch can be adjusted according to actual conditions.

[0048] In this technical solution, the connecting seat 23 is fixed on the bottom wall or end wall of the sliding door panel 3 or other suitable locations.

[0049] In practical applications, to facilitate staff inspection of the stability of the basement sliding door operation or to prevent malfunctions, at least one lifting door panel 2 is equipped with an inspection port 24, which is fitted with an openable inspection cover. Generally, the location of the inspection port 24 corresponds to the location of the lifting mechanism.

[0050] In practical applications, in order to facilitate staff entry and exit from the basement without affecting the normal opening or closing of the basement sliding door, at least one entry window 25 is set on one of the upgraded door panels, and an entry window 25 is also set at the corresponding position on the sliding door panel 3.

[0051] When the sliding door panel 3 is closed, the entry window 25 on the upgrade door panel and the entry window 25 on the sliding door panel 3 are independent of each other, and staff can choose to enter the underground parking garage through the entry window 25.

[0052] When the sliding door panel 3 is in the open state, the person entrance window 25 on the upgrade door panel and the person entrance window 25 on the sliding door panel 3 overlap to form an overlapping person entrance window 25, and the staff enter the underground parking garage through the overlapping person entrance window 25.

[0053] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Various modifications and variations can be made to the above embodiments. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A basement sliding door, comprising a door frame (1) and a basement door that cooperates with the door frame (1), characterized in that... The basement door includes two lifting door panels (2) on both sides and two sliding door panels (3) between the two lifting door panels (2). When the two sliding door panels (3) are closed, the two lifting door panels (2) are in the raised state. The top surfaces of the two lifting door panels (2) are flush with the top surfaces of the two sliding door panels (3) and can be flush with the surrounding ground, so that the top of the basement is closed and forms part of the ground for passage. When the two lifting door panels (2) are in the lowered state, the two sliding door panels (3) open and move into the space cleared after the two lifting doors are lowered, so that the basement door is opened for taking and putting objects into the basement.

2. The basement sliding door according to claim 1, characterized in that... Several sets of spaced lifting mechanisms are provided below each of the lifting door panels (2). Each set of lifting mechanisms includes a first power (4) and at least two telescopic support rods (5) driven by the first power (4). The first power (4) is used to drive the telescopic support rods (5) to extend to raise the lifting door panel (2) and provide support, or to drive the telescopic support rods (5) to retract to lower the lifting door panel (2).

3. The basement sliding door according to claim 1, characterized in that... Several sets of safety mechanisms (6) are provided below each of the lifting door panels (2). The safety mechanisms (6) are used to support the lifting door panels (2) in the raised state and to improve the load-bearing capacity of the lifting door panels (2). When the lifting door panels (2) are lowered, the safety mechanisms (6) avoid the lowering channel of the lifting door panels (2) so that the lifting door panels (2) can be lowered smoothly.

4. The basement sliding door according to claim 3, characterized in that... The safety mechanism (6) includes a base (7), a support body (8) pivotally connected to the base (7) at its lower end, a second power driving the support body (8) to rotate, the support body (8) being a long strip that widens from bottom to top, a support groove (9) being provided at the upper end of the support body (8), an upwardly extending blocking wall (10) being provided on the outer side of the upper end of the support body (8), the outer end of the lifting door panel (2) being embedded in the support groove (9), the blocking wall (10) being used to abut against the side wall of the outer end of the lifting door panel (2), and the bottom wall of the support groove (9) being supported by the bottom wall of the outer end of the lifting door panel (2).

5. The basement sliding door according to any one of claims 1-4, characterized in that... It also includes a third power (11), a translation mechanism driven by the third power (11), which drives the two translation door panels (3) to move back to back, for opening the upper end of the basement; or to move the two translation door panels (3) towards each other, for closing the upper end of the basement.

6. The basement sliding door according to claim 5, characterized in that... The translation mechanism also includes left and right rotating lead screws (12) driven by the third power (11), and a plurality of lead screw nuts are provided on the left and right rotating lead screws (12). The lead screw nuts are respectively fixed to the bottom of the two sliding door panels (3). The rotation of the left and right rotating lead screws (12) is used to make the corresponding lead screw nuts move in opposite directions to drive the two sliding door panels (3) to move in opposite directions, or to make the corresponding lead screw nuts move towards each other to drive the two sliding door panels (3) to move towards each other.

7. The basement sliding door according to claim 6, characterized in that... The translation mechanism also includes two connecting shafts (13) driven by the third power (11), and two steering mechanisms (14) respectively set at the outer ends of the two connecting shafts (13). There are two left and right rotating screws (12), and each steering mechanism (14) is connected to the corresponding left and right rotating screw (12) one by one. The two connecting shafts (13) are respectively set on both sides of the third power (11) and located on the same straight line, so that the two left and right rotating screws (12) respectively cooperate with the two sides of the two translation door panels (3).

8. The basement sliding door according to any one of claims 1-4, characterized in that... It also includes a locking mechanism for closing and locking the two sliding door panels (3).

9. The basement sliding door according to claim 8, characterized in that... The locking mechanism includes a fourth power source (15), a guide sleeve (16) that cooperates with the output end of the fourth power source (15), and a locking shaft (17) disposed in the guide sleeve (16). The outer end of the locking shaft (17) is provided with a wedge (19) with a small bottom and a large opening. The side walls of the two sliding door panels (3) are respectively provided with wedge-shaped parts (18). The wedge-shaped parts (18) are smaller on the outside and larger on the inside. The inclined surfaces on the wedge-shaped parts (18) on the two sliding door panels (3) are arranged opposite to each other. The fourth power source (15) is used to make the locking shaft (17) extend and retract. When the locking shaft (17) extends, it is used to make the two wedge-shaped parts (18) insert into the wedge (19) to form a locking fit. When the locking shaft (17) retracts, the two wedge-shaped parts (18) are released from the restriction of the locking shaft (17), and the two sliding door panels (3) can be separated.

10. The basement sliding door according to any one of claims 1-4, characterized in that... The sliding door panel (3) is provided with a supplementary notch and a supplementary plate (21) that cooperates with the supplementary notch. The shape of the supplementary plate (21) is adapted to the shape of the supplementary notch. The bottom of the supplementary plate (21) and the bottom of the sliding door panel (3) are provided with a switching mechanism. The switching mechanism includes a fifth power and a swing arm (22) that cooperates with the fifth power. The swing end of the swing arm (22) is fixed to the bottom of the supplementary plate (21). The bottom of the sliding door panel (3) is provided with a connecting seat (23). The driving end of the swing arm (22) is connected to the connecting seat (23). The fifth power drives the swing arm (22) to swing at the intersection point on the connecting seat (23), so that the supplementary plate (21) swings up to close the supplementary notch and swings down to open the supplementary notch.

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