A protective device for an inner wall of an elevator car

Abstract

The application discloses a protective device for an inner wall of an elevator car and relates to the technical field of elevators. The protective device comprises a first top plate, side plates and a bottom plate. The first top plate, the side plates and the bottom plate are installed on the inner wall of a car body. The two sides of the first top plate are movably provided with second top plates. The two sides of the bottom plate are movably provided with two groups of side plates. The inner wall of the car body is symmetrically provided with first supporting plates. The two ends of the inner wall of the car body are symmetrically provided with second supporting plates. One side of the inner wall of the car body is movably provided with mounting plates, and the mounting plates are movably connected with the bottom plate, one group of the first supporting plates and two groups of the second supporting plates. The protective device is quickly installed in the inner part of the car body through the arrangement of the first top plate, the second top plate, the side plates, the first supporting plates, the second supporting plates, the bottom plate and the mounting plates. When the protective device is disassembled, the protective device can be quickly disassembled, thereby avoiding the influence on the use of the elevator by others.

Description

Technical Field

[0001] This invention relates to the field of elevator technology, specifically to a protective device for the inner wall of an elevator car. Background Technology

[0002] An elevator is a permanent transportation device that serves several specific floors within a building. Its car moves on at least two rigid rails that are perpendicular to the horizontal plane or have an inclination angle of less than 15° from the vertical. There are also escalators, where the steps are mounted on a continuous track and run continuously. They are commonly known as moving walkways or automatic elevators. A vertical elevator is a fixed lifting device that serves designated floors. It has a car that runs between at least two rigid guide rails that are vertical or have an inclination angle of less than 15°. The size and structure of the car facilitate passenger entry and exit or loading and unloading of goods.

[0003] When homeowners in high-rise buildings are renovating, building materials are usually transported to their homes via elevator. As the materials move in and out of the elevator car, they inevitably scratch the inner walls of the elevator car, thus affecting its appearance.

[0004] To avoid scratches on the inner walls of the elevator car, the existing method is to first cut commercially available standard-sized plywood into multiple vertical panels, and then use pneumatic staples to splice the panels into a frame that can cover the elevator car floor and four side walls. The frame isolates the building materials from direct contact with the elevator car, preventing the elevator car from being scratched by the building materials. However, the above method is cumbersome to install and dismantle, requiring a lot of time during installation or dismantling, which affects other people's use of the elevator. Summary of the Invention

[0005] Therefore, the purpose of this invention is to provide a protective device for the inner wall of an elevator car to solve the technical problems mentioned above in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a protective device for the inner wall of an elevator car, comprising a first top plate, side plates, and a bottom plate. The first top plate, side plates, and bottom plate are installed on the inner wall of the car body. Second top plates are movably installed on both sides of the first top plate, and the first top plate is located at the upper center of the inner wall of the car body. Two sets of side plates are movably installed on both sides of the bottom plate, and the two sets of side plates are movably connected to the two sets of second top plates respectively. First support plates are symmetrically installed on the inner wall of the car body, and both sets of first support plates are movably connected to the first top plate and the two sets of second top plates. Second support plates are symmetrically installed at both ends of the inner wall of the car body, and multiple sets of second support plates are movably connected to the two sets of first support plates, the bottom plate, and the two sets of side plates respectively. An installation plate is movably installed on one side of the inner wall of the car body, and the installation plate is movably connected to the bottom plate, one set of first support plates, and two sets of second support plates respectively.

[0007] By adopting the above technical solution, the problem of rapid installation and disassembly of the internal protective device of the elevator car is solved. After the installer installs the first top plate at the center of the upper part of the inner wall of the elevator car body, the two sets of second top plates are then installed on both sides of the first top plate to complete the initial fixation of the first top plate. Next, the two sets of side plates are installed at the lower ends of the two sets of second top plates to limit and fix the two sets of second top plates. Then, the bottom plate is installed between the two sets of side plates to limit the two sets of side plates. The first top plate, the two sets of second top plates, the two sets of side plates, and the bottom plate are further limited and fixed by the two sets of first support plates and multiple sets of second support plates. Finally, the mounting plate is installed between the two sets of second support plates to complete the installation of the protective device inside the elevator car body. When disassembling, the above steps are reversed to quickly remove the protective device, avoiding affecting other people's use of the elevator.

[0008] The present invention is further configured such that both ends of the first top plate are staggered and engaged with one end of the two sets of second top plates, both ends of the bottom plate are staggered and engaged with one end of the two sets of side plates, and the other ends of the two sets of second top plates are staggered and engaged with the other ends of the two sets of side plates respectively. The cross sections of the two sets of second top plates and the two sets of side plates are all "L" shaped.

[0009] By adopting the above technical solution, one end of each of the two sets of second top plates is engaged and connected to both ends of the first top plate, and then one end of each of the two sets of side plates is engaged and connected to the other end of each of the two sets of second top plates, so that the two sets of second top plates and the first top plate are initially limited and fixed. Then, both ends of the bottom plate are engaged and connected to the other ends of each of the two sets of side plates, so that the two sets of side plates are initially limited and fixed.

[0010] The present invention is further configured such that limiting plates are symmetrically installed on the inner walls of the two sets of second top plates, and a drive shaft is installed inside the multiple sets of limiting plates. A drive gear is installed at one end of the multiple sets of drive shafts. Limiting grooves are opened at both ends of the two sets of first support plates, and the multiple sets of limiting plates are movably connected to the multiple sets of limiting grooves respectively. A first toothed plate is installed inside the multiple sets of limiting grooves, and the multiple sets of first toothed plates are meshed with the multiple sets of drive gears respectively.

[0011] By adopting the above technical solution, multiple sets of limiting plates enter multiple sets of limiting grooves respectively, so that the first toothed plate meshes with the drive gear, and the drive gear rotates, thereby driving the drive shaft to rotate.

[0012] The present invention is further configured such that each of the two sets of second top plates is symmetrically equipped with a drive shaft and a connecting shaft, and the multiple sets of drive shafts are respectively connected to multiple sets of drive shafts via synchronous belts, and a drive bevel gear is installed at one end of each of the multiple sets of drive shafts.

[0013] By adopting the above technical solution, the drive shaft rotates, and the drive shaft and the transmission shaft are connected by a synchronous belt, so the transmission shaft rotates synchronously, thereby driving the transmission bevel gear to rotate.

[0014] The present invention is further configured such that each of the multiple sets of connecting shafts is equipped with a connecting bevel gear at one end, and the multiple sets of connecting bevel gears are respectively meshed with multiple sets of transmission bevel gears. Each of the multiple sets of connecting shafts has a movably fitted locking block on its outer wall, and the inner wall of the multiple sets of locking blocks is respectively threaded to the outer wall of the multiple sets of connecting shafts.

[0015] By adopting the above technical solution, the transmission bevel gear rotates. Because the transmission bevel gear and the connecting bevel gear mesh, the connecting bevel gear rotates, thereby driving the connecting shaft to rotate, and in turn driving the locking block to move.

[0016] The present invention is further configured such that each of the two sets of first support plates is symmetrically provided with a slot, and the multiple sets of slots are movably connected to multiple sets of card blocks, and the cross-section of the multiple sets of card blocks is "L" shaped.

[0017] By adopting the above technical solution, the card block is displaced, so that one end of the card block moves into the card slot, thereby limiting and fixing the two sets of first support plates.

[0018] The present invention is further configured such that the outer walls of the base plate, the two sets of side plates and the two sets of first support plates are symmetrically equipped with protruding plates, and the upper and lower ends of the multiple sets of second support plates are provided with grooves, and the multiple sets of grooves are respectively movably connected to the multiple sets of protruding plates.

[0019] By adopting the above technical solution, multiple sets of second support plates are installed, so that multiple sets of convex plates enter multiple sets of grooves respectively, thereby limiting the multiple sets of second support plates and further limiting and fixing the two sets of first support plates, the two sets of side plates and the bottom plate.

[0020] The present invention is further configured such that movable shafts are symmetrically installed inside the mounting plate, and the two sets of movable shafts are connected by a synchronous belt. A movable gear is sleeved on the outer wall of one set of movable shafts. A second toothed plate is movably installed on one side of the mounting plate, and the second toothed plate is meshed with the movable gear.

[0021] By adopting the above technical solution, the second toothed plate enters the interior of the mounting plate and meshes with the movable gear, so the movable gear rotates, thereby driving a set of movable shafts to rotate. The two sets of movable shafts are connected by a synchronous belt, so the two sets of movable shafts rotate synchronously.

[0022] The present invention is further configured such that movable plates are movably mounted at both ends of the mounting plate, and the inner walls of the two sets of movable plates are threadedly connected to the outer walls of the two sets of movable shafts, respectively. The base plate and the first set of support plates are provided with reserved grooves that cooperate with the movable plates.

[0023] By adopting the above technical solution, the two sets of movable shafts rotate synchronously, thereby driving the two sets of movable plates to move, so that the two sets of movable plates enter the two sets of reserved slots respectively, thereby limiting and fixing the mounting plate.

[0024] The present invention is further configured such that the center of the first top plate is hollow, and multiple sets of mounting columns extending downward from the center of the first top plate are fitted with protective plates, and the protective plates are made of transparent material.

[0025] By adopting the above technical solution, the protective plate avoids obstructing the lights and ventilation inside the car.

[0026] In summary, the present invention has the following main beneficial effects: 1. This invention solves the problem of rapid installation and disassembly of the internal protective device of the elevator car by setting up a first top plate, a second top plate, side plates, a first support plate, a second support plate, a bottom plate, and a mounting plate. After the installer installs the first top plate at the upper center of the inner wall of the elevator car body, two sets of second top plates are installed on both sides of the first top plate to complete the initial fixation of the first top plate. Then, two sets of side plates are installed at the lower ends of the two sets of second top plates to limit and fix the two sets of second top plates. Then, the bottom plate is installed between the two sets of side plates to limit the two sets of side plates. The first top plate, two sets of second top plates, two sets of side plates, and the bottom plate are further limited and fixed by two sets of first support plates and multiple sets of second support plates. Finally, the mounting plate is installed between the two sets of second support plates to complete the installation of the internal protective device of the elevator car body. When disassembling, the above steps are reversed to quickly disassemble the protective device and avoid affecting other people's use of the elevator. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the elevator car body of the protective device for the inner wall of the elevator car according to the present invention; Figure 2 This is a schematic diagram of the internal structure of the elevator car body of the protective device for the inner wall of the elevator car according to the present invention; Figure 3 This is an exploded view of the interior of the elevator car body of the protective device for the inner wall of the elevator car according to the present invention. Figure 4 This is a schematic diagram of the second top plate of a protective device for the inner wall of an elevator car according to the present invention; Figure 5 This is a schematic diagram of the internal structure of the second top plate of the protective device for the inner wall of an elevator car according to the present invention. Figure 6 This is a schematic diagram of the first support plate of a protective device for the inner wall of an elevator car according to the present invention. Figure 7This is a schematic diagram of the side plate, bottom plate, and second support plate of a protective device for the inner wall of an elevator car according to the present invention. Figure 8 This is a schematic diagram of the mounting plate for a protective device on the inner wall of an elevator car according to the present invention; Figure 9 This is a schematic diagram of the internal structure of the mounting plate of the protective device for the inner wall of an elevator car according to the present invention. Figure 10 This is a schematic diagram of the first top plate of a protective device for the inner wall of an elevator car according to the present invention.

[0028] In the diagram: 1. Car body; 2. First top plate; 3. Second top plate; 4. Side plate; 5. Bottom plate; 6. First support plate; 7. Second support plate; 8. Mounting plate; 9. Limiting plate; 10. Drive shaft; 11. Drive gear; 12. Transmission shaft; 13. Transmission bevel gear; 14. Connecting shaft; 15. Connecting bevel gear; 16. Locking block; 17. Limiting groove; 18. First toothed plate; 19. Locking groove; 20. Protruding plate; 21. Groove; 22. Reserved groove; 23. Movable shaft; 24. Movable gear; 25. Second toothed plate; 26. Movable plate; 27. Protective plate. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0030] The embodiments of the present invention will now be described.

[0031] A protective device for the inner wall of an elevator car, such as Figure 1-10 As shown, the car body includes a first top plate 2, side plates 4, and a bottom plate 5. The first top plate 2, side plates 4, and bottom plate 5 are installed on the inner wall of the car body 1. Second top plates 3 are movably installed on both sides of the first top plate 2, and the first top plate 2 is located at the upper center of the inner wall of the car body 1. Two sets of second top plates 3 limit the movement of the first top plate 2. Two sets of side plates 4 are movably installed on both sides of the bottom plate 5, and the two sets of side plates 4 are movably connected to the two sets of second top plates 3 respectively. The two sets of side plates 4 limit the movement of the two sets of second top plates 3. The inner wall of the car body 1 is symmetrically equipped with first... Support plate 6, and both sets of first support plates 6 are movably connected to the first top plate 2 and the two sets of second top plates 3. Second support plates 7 are symmetrically installed at both ends of the inner wall of the car body 1, and multiple sets of second support plates 7 are movably connected to the two sets of first support plates 6, the bottom plate 5 and the two sets of side plates 4 respectively. Multiple sets of second support plates 7 further limit and fix the two sets of first support plates 6, the bottom plate 5 and the two sets of side plates 4. An installation plate 8 is movably installed on one side of the inner wall of the car body 1, and the installation plate 8 is movably connected to the bottom plate 5, one set of first support plates 6 and two sets of second support plates 7 respectively.

[0032] Please see Figures 2-7 Both ends of the first top plate 2 are staggered and engaged with one end of each of the two sets of second top plates 3. Both ends of the bottom plate 5 are staggered and engaged with one end of each of the two sets of side plates 4. The other ends of the two sets of second top plates 3 are staggered and engaged with the other ends of the two sets of side plates 4. The cross sections of the two sets of second top plates 3 and the two sets of side plates 4 are all "L" shaped. One end of each of the two sets of second top plates 3 is engaged and engaged with both ends of the first top plate 2. Then, one end of each of the two sets of side plates 4 is engaged and engaged with the other ends of the two sets of second top plates 3, so that the two sets of second top plates 3 and the first top plate 2 are initially limited and fixed. Then, both ends of the bottom plate 5 are engaged with the other ends of the two sets of side plates 4, so that the two sets of side plates 4 are initially limited and fixed.

[0033] Please see Figures 4-6 Both sets of second top plates 3 have symmetrically installed limit plates 9 on their inner walls, and each set of limit plates 9 has a drive shaft 10 installed inside. Each set of drive shafts 10 has a drive gear 11 installed at one end. Both ends of the two sets of first support plates 6 have limit grooves 17, and the multiple sets of limit plates 9 are movably connected to the multiple sets of limit grooves 17. Each set of limit grooves 17 has a first toothed plate 18 installed inside, and the multiple sets of first toothed plates 18 are meshed with the multiple sets of drive gears 11. The multiple sets of limit plates 9 enter the multiple sets of limit grooves 17, so that the first toothed plate 18 is meshed with the drive gear 11, and the drive gear 11 rotates, thereby driving the drive shaft 10 to rotate.

[0034] Please see Figures 2-6 Both sets of second top plates 3 are symmetrically equipped with drive shafts 12 and connecting shafts 14. Multiple sets of drive shafts 12 are connected to multiple sets of drive shafts 10 via synchronous belts. One end of each set of drive shafts 12 is equipped with a transmission bevel gear 13. The drive shafts 10 rotate, and the drive shafts 10 and drive shafts 12 are connected via synchronous belts. Therefore, the drive shafts 12 rotate synchronously, thereby driving the transmission bevel gears 13 to rotate.

[0035] Please see Figures 2-6 Each of the multiple sets of connecting shafts 14 has a connecting bevel gear 15 installed at one end, and the multiple sets of connecting bevel gears 15 are respectively meshed with multiple sets of transmission bevel gears 13. Each of the multiple sets of connecting shafts 14 has a movably fitted locking block 16 on its outer wall, and the inner wall of the multiple sets of locking blocks 16 is respectively threaded to the outer wall of the multiple sets of connecting shafts 14. When the transmission bevel gear 13 rotates, because the transmission bevel gear 13 is meshed with the connecting bevel gear 15, the connecting bevel gear 15 rotates, thereby driving the connecting shaft 14 to rotate, and in turn driving the locking block 16 to move.

[0036] Please see Figures 2-6Both sets of first support plates 6 have symmetrical slots 19 on their upper ends, and multiple slots 19 are movably connected to multiple blocks 16. The cross-section of multiple blocks 16 is "L" shaped. When the blocks 16 are displaced, one end of the blocks 16 moves into the slot 19, thereby limiting and fixing the two sets of first support plates 6.

[0037] Please see Figures 2-7 The outer walls of the base plate 5, the two sets of side plates 4, and the two sets of first support plates 6 are symmetrically equipped with protruding plates 20. The upper and lower ends of the multiple sets of second support plates 7 are provided with grooves 21, and the multiple sets of grooves 21 are movably connected to the multiple sets of protruding plates 20. The multiple sets of second support plates 7 are installed so that the multiple sets of protruding plates 20 enter the multiple sets of grooves 21 respectively. This limits the position of the multiple sets of second support plates 7 and further limits and fixes the two sets of first support plates 6, the two sets of side plates 4, and the base plate 5.

[0038] Please see Figures 3-9 The mounting plate 8 has two sets of movable shafts 23 symmetrically installed inside. The two sets of movable shafts 23 are connected by a synchronous belt. A movable gear 24 is sleeved on the outer wall of one set of movable shafts 23. A second toothed plate 25 is movably installed on one side of the mounting plate 8 and meshes with the movable gear 24. The second toothed plate 25 enters the interior of the mounting plate 8 and meshes with the movable gear 24. Therefore, the movable gear 24 rotates, thereby driving the set of movable shafts 23 to rotate. The two sets of movable shafts 23 are connected by a synchronous belt, so the two sets of movable shafts 23 rotate synchronously.

[0039] Please see Figures 3-9 The mounting plate 8 has movable plates 26 installed at both ends. The inner walls of the two sets of movable plates 26 are threaded to the outer walls of the two sets of movable shafts 23. The base plate 5 and the first set of support plates 6 are provided with reserved slots 22 to cooperate with the movable plates 26. The two sets of movable shafts 23 rotate synchronously, thereby driving the two sets of movable plates 26 to move, so that the two sets of movable plates 26 enter the two sets of reserved slots 22 respectively, so that the mounting plate 8 is limited and fixed.

[0040] Please see Figures 2-10 The first top plate 2 has a hollow center. Multiple sets of mounting columns extend downward from the center of the first top plate 2 and are equipped with protective plates 27. The protective plates 27 are made of transparent material. The installation of the protective plates 27 avoids obstructing the lights and ventilation inside the car.

[0041] The working principle of this invention is as follows: When the installer installs the protective device, the installer first fits the first top plate 2 against the inner wall of the car body 1, and the setting of the protective plate 27 avoids obstructing the lights and ventilation inside the car. Then, one end of each of the two sets of second top plates 3 is respectively engaged and connected to both ends of the first top plate 2. Then, one end of each of the two sets of side plates 4 is respectively engaged and connected to the other end of each of the two sets of second top plates 3, so that the two sets of second top plates 3 and the first top plate 2 are initially limited and fixed. Then, both ends of the bottom plate 5 are respectively engaged and connected to the other ends of each of the two sets of side plates 4, so that the two sets of side plates 4 are initially limited and fixed. After the base plate 5 is installed, the installers install the two sets of first support plates 6, so that multiple sets of limiting plates 9 enter the multiple sets of limiting grooves 17 respectively, so that the first toothed plate 18 meshes with the drive gear 11, so the drive gear 11 rotates, thereby driving the drive shaft 10 to rotate. The drive shaft 10 is connected to the transmission shaft 12 through a synchronous belt, so the transmission shaft 12 rotates synchronously, thereby driving the transmission bevel gear 13 to rotate. Since the transmission bevel gear 13 meshes with the connecting bevel gear 15, the connecting bevel gear 15 rotates, thereby driving the connecting shaft 14 to rotate, and then driving the locking block 16 to move, so that one end of the locking block 16 moves into the locking groove 19, thereby limiting and fixing the two sets of first support plates 6. After the two sets of first support plates 6 are installed, the installers install multiple sets of second support plates 7 from the side, so that multiple sets of protruding plates 20 enter multiple sets of grooves 21 respectively, so that the multiple sets of second support plates 7 are limited, and at the same time, the two sets of first support plates 6, the two sets of side plates 4 and the bottom plate 5 are further limited and fixed. After the installation of multiple sets of second support plates 7 is completed, the installer will install the mounting plate 8. First, the mounting plate 8 will be placed between two sets of second support plates 7. Then, the second toothed plate 25 will be pushed so that it enters the mounting plate 8. The second toothed plate 25 will mesh with the movable gear 24, so the movable gear 24 will rotate, thereby driving a set of movable shafts 23 to rotate. The two sets of movable shafts 23 are connected by a synchronous belt, so the two sets of movable shafts 23 will rotate synchronously, thereby driving the two sets of movable plates 26 to move. The two sets of movable plates 26 will enter the two sets of reserved slots 22 respectively, so that the mounting plate 8 is fixed and the protective device inside the car body 1 is quickly installed.

[0042] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A protective device for the inner wall of an elevator car, comprising a first top plate (2), side plates (4), and a bottom plate (5), wherein the first top plate (2), side plates (4), and bottom plate (5) are installed on the inner wall of the car body (1), characterized in that: The first top plate (2) is movably installed with second top plates (3) on both sides, and the first top plate (2) is located at the center of the upper end of the inner wall of the car body (1). The bottom plate (5) is movably installed with two sets of side plates (4) on both sides, and the two sets of side plates (4) are movably connected to the two sets of second top plates (3) respectively. The inner wall of the car body (1) is symmetrically installed with first support plates (6), and the two sets of first support plates (6) are movably connected to the first top plate (2) and the two sets of second top plates (3). The inner walls of the car body (1) are symmetrically installed with second support plates (7) at both ends, and multiple sets of second support plates (7) are movably connected to the two sets of first support plates (6), the bottom plate (5) and the two sets of side plates (4) respectively. The inner wall of the car body (1) is movably installed with an installation plate (8) on one side, and the installation plate (8) is movably connected to the bottom plate (5), a set of first support plates (6) and two sets of second support plates (7) respectively. The mounting plate (8) is symmetrically equipped with movable shafts (23), and the two sets of movable shafts (23) are connected by a synchronous belt. A movable gear (24) is sleeved on the outer wall of one set of movable shafts (23). A second toothed plate (25) is movably installed on one side of the mounting plate (8), and the second toothed plate (25) is meshed with the movable gear (24). The mounting plate (8) has movable plates (26) installed at both ends, and the inner walls of the two sets of movable plates (26) are threaded to the outer walls of the two sets of movable shafts (23). The base plate (5) and a set of first support plates (6) are provided with reserved grooves (22) that cooperate with the movable plates (26).

2. The protective device for the inner wall of an elevator car according to claim 1, characterized in that: Both ends of the first top plate (2) are staggered and connected to one end of the two sets of second top plates (3). Both ends of the bottom plate (5) are staggered and connected to one end of the two sets of side plates (4). The other ends of the two sets of second top plates (3) are staggered and connected to the other ends of the two sets of side plates (4). The cross sections of the two sets of second top plates (3) and the two sets of side plates (4) are all "L" shaped.

3. The protective device for the inner wall of an elevator car according to claim 1, characterized in that: Both sets of second top plates (3) are symmetrically equipped with limiting plates (9) on their inner walls, and multiple sets of limiting plates (9) are equipped with drive shafts (10) inside. One end of each set of drive shafts (10) is equipped with a drive gear (11). Both ends of the two sets of first support plates (6) are provided with limiting grooves (17), and multiple sets of limiting plates (9) are movably connected to multiple sets of limiting grooves (17). Each set of limiting grooves (17) is equipped with a first toothed plate (18), and multiple sets of first toothed plates (18) are meshed with multiple sets of drive gears (11).

4. The protective device for the inner wall of an elevator car according to claim 3, characterized in that: Both sets of the second top plates (3) are symmetrically equipped with drive shafts (12) and connecting shafts (14), and multiple sets of drive shafts (12) are connected to multiple sets of drive shafts (10) via synchronous belts. One end of each set of drive shafts (12) is equipped with a drive bevel gear (13).

5. A protective device for the inner wall of an elevator car according to claim 4, characterized in that: Each of the multiple sets of connecting shafts (14) is equipped with a connecting bevel gear (15) at one end, and the multiple sets of connecting bevel gears (15) are respectively meshed with multiple sets of transmission bevel gears (13). The outer walls of the multiple sets of connecting shafts (14) are movably fitted with a locking block (16), and the inner walls of the multiple sets of locking blocks (16) are respectively threaded to the outer walls of the multiple sets of connecting shafts (14).

6. The protective device for the inner wall of an elevator car according to claim 5, characterized in that: Both sets of the first support plates (6) are symmetrically provided with slots (19) at their upper ends, and multiple sets of slots (19) are movably connected to multiple sets of blocks (16), and the cross-section of the multiple sets of blocks (16) is "L" shaped.

7. A protective device for the inner wall of an elevator car according to claim 1, characterized in that: The outer walls of the base plate (5), the two sets of side plates (4) and the two sets of first support plates (6) are symmetrically equipped with protruding plates (20). The upper and lower ends of the multiple sets of second support plates (7) are provided with grooves (21), and the multiple sets of grooves (21) are movably connected to the multiple sets of protruding plates (20).

8. The protective device for the inner wall of an elevator car according to claim 1, characterized in that: The first top plate (2) is hollow in the center. Multiple sets of mounting columns extend downward from the center of the first top plate (2) and are equipped with protective plates (27). The protective plates (27) are made of transparent material.

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