Elevator car roof fixing structure

Abstract

The invention discloses an elevator car roof fixing structure, and relates to the technical field of elevator equipment, the elevator car roof fixing structure comprises a car, a car roof and a guide assembly, the car comprises a car body and a mounting frame, a plurality of uniformly distributed moving grooves are formed in the inner end of the mounting frame, and matched fixing assemblies are slidably mounted in the moving grooves; four evenly-distributed outer filling bags are fixedly connected to the outer end of the car roof, a plurality of evenly-distributed fixing grooves are further formed in the outer side wall of the car roof, electromagnets are installed in the fixing grooves, matched push plates are slidably installed at openings of the fixing grooves, and elastic liquid bags are fixedly connected between the push plates and the electromagnets. An internal pipeline is communicated between the elastic liquid bag and the outer filling bag, automatic fixing of the car roof is achieved through the adsorption effect of the electromagnet on the magnet block, in the installation process, fixing can be completed only by placing the car roof on the guide assembly and starting the electromagnet, manual accurate alignment and tightening operation are not needed, the installation process is greatly simplified, and the installation efficiency is improved. And the installation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator equipment, and more specifically, to an elevator car top fixing structure. Background Art

[0002] With the rapid development of modern urbanization, elevators, as vertical transportation tools, play a vital role in high-rise buildings and public facilities. The safety and stability of elevators are directly related to the safety of passengers and the convenience of daily life. In the elevator system, the car top is an important part connecting the car and the shaft. The reliability and convenience of its fixed structure have a decisive influence on the overall performance of the elevator.

[0003] Traditional elevator car top fixing structures are mostly connected with mechanical fasteners such as bolts and nuts. Although this method is simple in structure, it has many shortcomings. First, bolt connections require manual precise positioning and tightening, and the installation process is cumbersome and time-consuming, increasing installation costs. Secondly, bolt connections are prone to loosening due to vibration and wear during long-term use, resulting in unstable car top fixation, affecting the safe operation of the elevator. In addition, the traditional fixing structure lacks effective emergency fixing measures when the elevator accidentally loses power or fails, posing a safety hazard.

[0004] Therefore, in view of the above technical problems, it is necessary to provide an elevator car top fixing structure. Summary of the invention

[0005] The object of the present invention is to provide an elevator car top fixing structure to solve the above-mentioned problems.

[0006] In order to achieve the above purpose, the technical solution provided by an embodiment of the present invention is as follows:

[0007] The top of an elevator car is fixedly provided with a lifting pole, and the lifting pole ...

[0008] As a further improvement of the present invention, the fixing assembly includes a hollow fixing column and a pair of first sliding blocks, and the pair of first sliding blocks are symmetrically installed on the outer ends of the hollow fixing columns, a pair of first sliding grooves matching the first sliding blocks are provided on the inner side walls of the movable grooves, and the first sliding blocks are slidably connected in the first sliding grooves, a pair of symmetrically distributed positioning holes are also provided on the hollow fixing column, matching magnetic positioning columns are slidably installed in the positioning holes, a second sliding block is fixedly connected to the outer ends of the magnetic positioning columns, a second sliding groove matching the second sliding block is provided on the inner side walls of the positioning holes, and the second sliding block is slidably connected in the second sliding groove, and a matching inner moving block is slidably installed in the hollow fixing column. , the inner moving block is fixedly connected to a magnet block at one end close to the car top, and elastic parts are fixedly connected to both ends of the inner moving block. A pair of first positioning grooves matching the magnetic positioning column are also opened on the inner side wall of the movable groove, and a pair of second positioning grooves matching the magnetic positioning column are opened on the inner side wall of the fixed groove. Through the adsorption effect of the electromagnet on the magnet block, it can be moved in the approaching direction and squeeze the elastic part. When the annular arc groove on the rear side is aligned with the magnetic positioning column, the pair of magnetic positioning columns rely on their own adsorption effect to retract from the positioning hole to leave the first positioning groove, and then the magnet block continues to push the hollow fixed column out of the movable groove and into the fixed groove to complete the fixation of the car top.

[0009] As a further improvement of the present invention, the end of the magnetic positioning column close to the inner moving block is an arc surface structure, a pair of annular arc surface grooves are opened at the outer end of the inner moving block, and the magnetic positioning column is located between the pair of annular arc surface grooves.

[0010] As a further improvement of the present invention, the suspension platform includes a transparent cover tube, an LED lamp is installed on the upper end of the inner side of the transparent cover tube, and a plurality of guide strips distributed in a circular array are fixedly installed on the outer end of the transparent cover tube.

[0011] As a further improvement of the present invention, a liquid storage tank is provided at the upper end of the transparent cover tube, and a colored liquid for warning is contained in the liquid storage tank. A color display cavity is provided inside the guide strip. A liquid outlet pipe is connected between the liquid storage tank and the color display cavity, and the height of the liquid outlet pipe is higher than the liquid level of the colored liquid. When the car is tilted or shakes greatly, the colored liquid in the liquid storage tank enters the color display cavity through the liquid outlet pipe, and the warning effect is amplified by the illumination of the LED lamp.

[0012] As a further improvement of the present invention, the upper part of the guide strip is made of transparent material, and the lower part is made of non-transparent material. The lower part plays a certain fault-tolerant role. During the normal slight vibration when installing the car top or the elevator is running, a small amount of colored liquid may splash into the liquid outlet pipe and enter the color display cavity, but at this time there will be no obvious color change warning phenomenon due to the influence of opacity.

[0013] As a further improvement of the present invention, the guide assembly includes a limit frame, a guide cylinder is fixedly installed at the center of the limit frame through four connecting plates, and the guide cylinder matches the transparent cover cylinder, a plurality of guide grooves distributed in a circular array are opened on the inner side of the guide cylinder, and the guide grooves match the guide strips, the limit frame can support the car top to prevent it from falling, and the guide cylinder and the guide groove are used to guide the installation of the car top, and can protect the hanging platform, and also help to align the fixed assembly and the fixed groove.

[0014] As a further improvement of the present invention, the outer end of the outer filling bag is covered with a protective layer, and the protective layer includes an inner expansion layer and a friction layer. The inner expansion layer is fixedly connected between the friction layer and the outer filling bag. A heat conductive mesh is inlaid at the connection between the inner expansion layer and the friction layer. Heat conductive beads are fixedly connected at the nodes on the heat conductive mesh. The protective layer protects the outer filling bag to prevent relative friction caused by shaking between the car top and the mounting frame during installation or elevator operation, thereby causing damage to the outer filling bag. The friction layer has good strength to realize the protective function, and its high friction can also make it difficult for the mounting frame and the outer filling bag to move relative to each other. Even if there is shaking causing relative movement, the heat generated by friction can be transferred to the inner expansion layer through the heat conductive mesh and the heat conductive beads, so that it expands due to heat and further presses against the friction layer and the mounting frame, thereby avoiding continuous relative movement and causing greater wear.

[0015] As a further improvement of the present invention, the inner expansion layer is made of a heat-expandable rubber material, and the friction layer is made of a hard material with high friction.

[0016] As a further improvement of the present invention, the outer filling bag and the elastic liquid bag are both filled with electrorheological fluid and are connected to an electric field generator. The electrorheological fluid is liquid in a normal state. When the push plate and the elastic liquid bag are squeezed, the electrorheological fluid inside them will enter the outer filling bag, causing it to expand and fill the gap between the outer filling bag and the mounting frame and press it tightly. After power is turned on, it is transformed into solid properties to provide high-strength support.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] (1) The elevator car top fixing structure proposed in the present invention realizes automatic fixing of the car top through the adsorption effect of the electromagnet on the magnet block. During the installation process, it is only necessary to place the car top on the guide assembly and start the electromagnet to complete the fixing. There is no need for manual precise positioning and tightening operations, which greatly simplifies the installation process and improves the installation efficiency.

[0019] (2) The fixing assembly in the present invention is made of high-strength metal material, and the car roof is firmly fixed by the use of magnetic positioning columns and hollow fixing columns. At the same time, the electrorheological fluid filled in the outer filling bag and the elastic liquid bag is converted into solid properties after power is turned on, providing high-strength support and further enhancing the fixing stability of the car roof.

[0020] (3) The traditional fixing structure is prone to loosening or falling off when the elevator loses power unexpectedly or fails, posing a safety hazard. However, in the fixing structure of the present invention, after power is cut off, the electromagnet loses its magnetic field, and the magnetic positioning column is inserted into the second positioning groove under the action of the elastic member, thereby locking the hollow fixing column. Even after power is cut off, the fixing effect on the car top can still be maintained, thereby greatly improving the safety of the elevator.

[0021] (4) The conventional fixed structure is prone to generate noise and vibration during the operation of the elevator due to the friction between the bolted connection and the metal parts. The fixed structure of the present invention effectively reduces the generation of noise and vibration through the buffering effect of the outer filling bag and the elastic liquid bag, as well as the high friction of the friction layer and the thermal expansion characteristics of the inner expansion layer, thereby improving the ride comfort of the elevator.

[0022] (5) The fixed structure of the present invention focuses on energy conservation and environmental protection in design and material selection. For example, the inner expansion layer is made of thermal expansion rubber material, which not only has excellent expansion performance, but also has good heat insulation and thermal insulation effects, which helps to reduce energy consumption. At the same time, the electrorheological fluid is transformed into solid properties for support after power is turned on, without the need for additional energy consumption, which meets the current social requirements for energy conservation and environmental protection.

[0023] (6) The fixing structure of the present invention not only improves the fixing stability and safety of the car top, but also improves the overall performance of the elevator by optimizing the design and material selection. For example, the design of the guide component makes the installation of the car top more convenient and accurate; the LED lights and guide strips on the hanging platform not only provide lighting and guidance, but also realize the real-time monitoring and warning functions of the elevator operation status through the coordinated use of the color-developing cavity and the colored liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention before installation;

[0025] Figure 2 It is a schematic diagram of the structure after the present invention is installed;

[0026] Figure 3 It is a structural schematic diagram of the car roof of the present invention;

[0027] Figure 4 It is a structural schematic diagram of the guide assembly of the present invention;

[0028] Figure 5 It is a structural schematic diagram of the fixing assembly of the present invention;

[0029] Figure 6 is a cross-sectional view of a fixing assembly of the present invention;

[0030] Figure 7 It is a cross-sectional view of the movable groove and the fixed groove of the present invention;

[0031] Figure 8 It is a cross-sectional view of the suspension platform part of the present invention;

[0032] Fig. 9 It is a cross-sectional view of the protective layer part of the present invention.

[0033] Description of the numbers in the figure:

[0034] 1. Car; 101. Car body; 102. Mounting frame; 103. Corner column; 2. Car top; 3. Guide assembly; 301. Limit frame; 302. Connecting plate; 303. Guide cylinder; 4. Fixing assembly; 401. Hollow fixing column; 402. First slider; 403. Magnetic positioning column; 404. Second slider; 405. Inward moving block; 406. Elastic member; 407. Magnet block; 408. Annular arc groove; 5. External filling capsule; 6. Suspension platform; 601. Transparent cover tube; 602. Guide strip; 603. LED lamp; 604. Liquid storage tank; 7. Electromagnet; 8. Push plate; 9. Elastic liquid capsule; 10. Protective layer; 1001. Inner expansion layer; 1002. Friction layer; 1003. Thermal conductive net; 1004. Thermal conductive beads. DETAILED DESCRIPTION

[0035] An implementation of the present application is described in detail below with reference to the accompanying drawings.

[0036] The first implementation method:

[0037] See also Figure 1-9The invention discloses an elevator car top fixing structure, comprising a car 1, a car top 2 and a guide assembly 3. The car 1 comprises a car body 101. An integral mounting frame 102 is fixedly connected to the upper end of the car body 101. Corner columns 103 are fixedly connected to the four corners of the inner end of the mounting frame 102. A plurality of evenly distributed movable grooves are provided at the inner end of the mounting frame 102. Matching fixed assemblies 4 are slidably installed in the movable grooves. The car top 2 is installed on the inner side of the mounting frame 102. A hanging platform 6 is fixedly connected to the lower end of the car top 2. The outer end of the car top 2 is fixedly connected to the It is connected to four evenly distributed outer filling bags 5, and a plurality of evenly distributed fixing grooves are also opened on the outer side wall of the car roof 2, and the fixing grooves correspond to the fixing components 4 respectively. An electromagnet 7 is installed inside the fixing groove, and a matching push plate 8 is slidably installed at the opening of the fixing groove. An elastic liquid bag 9 is fixedly connected between the push plate 8 and the electromagnet 7, and an internal pipeline is connected between the elastic liquid bag 9 and the outer filling bag 5. The guide component 3 is fixedly installed at the junction of the car body 101 and the inner side of the installation frame 102, and the car roof 2 is installed on the upper side of the guide component 3.

[0038] The fixing component 4 includes a hollow fixing column 401 and a pair of first sliding blocks 402, and the pair of first sliding blocks 402 are symmetrically installed at the outer end of the hollow fixing column 401. The hollow fixing column 401 is made of high-strength metal material. A pair of first sliding grooves matching the first sliding blocks 402 are opened on the inner side wall of the moving groove, and the first sliding blocks 402 are slidably connected in the first sliding grooves. A pair of symmetrically distributed positioning holes are also opened on the hollow fixing column 401, and matching magnetic positioning columns 403 are slidably installed in the positioning holes. The outer end of the magnetic positioning column 403 is fixedly connected to the second sliding block 404, and a second sliding groove matching the second sliding block 404 is opened on the inner side wall of the positioning hole, and the second sliding block 404 is slidably connected in the second sliding groove. A matching inner moving block 405 is slidably installed in the hollow fixing column 401. The inner moving block 405 is fixedly connected to a magnet block 407 at one end close to the car top 2, and elastic members 406, such as springs, are fixedly connected to both ends of the inner moving block 405. A pair of first positioning grooves matching the magnetic positioning column 403 are also provided on the inner side wall of the movable groove, and a pair of second positioning grooves matching the magnetic positioning column 403 are provided on the inner side wall of the fixed groove. The magnet block 407 can be moved in the approaching direction and squeeze the elastic member 406 through the adsorption effect of the electromagnet 7. When the annular arc groove 408 on the rear side is aligned with the magnetic positioning column 403, the pair of magnetic positioning columns 403 retract from the positioning hole and leave the first positioning groove by relying on their own adsorption effect. Then the magnet block 407 continues to push the hollow fixed column 401 out of the movable groove and into the fixed groove to complete the fixation of the car top 2.

[0039] The end of the magnetic positioning column 403 close to the inner moving block 405 is an arc structure, and a pair of annular arc grooves 408 are opened at the outer end of the inner moving block 405, and the magnetic positioning column 403 is located between the pair of annular arc grooves 408. The opening of the annular arc groove 408 is rounded, so that the magnetic positioning column 403 is easier to move relative to the annular arc groove 408.

[0040] The magnetic positioning posts 403 are attracted to each other. In order to avoid the influence of the magnetic field of the electromagnet 7 which may cause the movement of the magnetic positioning posts 403 to be obstructed, a magnetic shielding material layer can be wrapped on the outer side of the magnetic positioning posts, exposing only the side close to each other to isolate the influence of the magnetic field of the electromagnet 7. An elastic part such as a spring can also be installed between the second slider and the second slide groove to assist the movement.

[0041] The hanging platform 6 includes a transparent cover tube 601 , an LED lamp 603 is installed on the inner upper end of the transparent cover tube 601 , and a plurality of guide bars 602 distributed in a circular array are fixedly installed on the outer end of the transparent cover tube 601 .

[0042] A liquid tank 604 is provided at the upper end of the transparent cover tube 601, and a colored liquid for warning, such as red liquid, is contained in the liquid tank 604. A color display cavity is provided inside the guide strip 602. A liquid outlet pipe is connected between the liquid tank 604 and the color display cavity, and the height of the liquid outlet pipe is higher than the liquid level of the colored liquid. When the car 1 is tilted or shakes greatly, the colored liquid in the liquid tank 604 enters the color display cavity through the liquid outlet pipe, and the warning effect is amplified by the illumination of the LED lamp 603.

[0043] The upper area of ​​the guide strip 602 is made of transparent material, and the lower area is made of non-transparent material. The lower area plays a certain fault-tolerant role. During the installation of the car top 2 or the normal slight vibration during the operation of the elevator, a small amount of colored liquid may splash into the liquid outlet pipe and enter the color display cavity, but at this time there will be no obvious color change warning phenomenon due to the influence of opacity.

[0044] The guide assembly 3 includes a limit frame 301, at the center of which a guide cylinder 303 is fixedly installed via four connecting plates 302, and the guide cylinder 303 matches the transparent cover cylinder 601, which is also made of transparent material. A plurality of guide grooves distributed in a circular array are provided on the inner side of the guide cylinder 303, and the guide grooves match the guide strips 602. The limit frame 301 can support the car top 2 to prevent it from falling, while the guide cylinder 303 and the guide grooves are used to guide the installation of the car top 2, and can protect the hanging platform 6, and also help to align the fixing assembly 4 and the fixing groove.

[0045] The outer end of the outer filling bag 5 is covered with a protective layer 10, and the protective layer 10 includes an inner expansion layer 1001 and a friction layer 1002. The inner expansion layer 1001 is fixedly connected between the friction layer 1002 and the outer filling bag 5. The connection between the inner expansion layer 1001 and the friction layer 1002 is inlaid with a heat-conducting net 1003, and the nodes on the heat-conducting net 1003 are fixedly connected with heat-conducting beads 1004. The protective layer 10 plays a protective role for the outer filling bag 5 to prevent the vibration between the car top 2 and the installation frame 102 during installation or elevator operation. Relative friction is generated, which leads to damage of the outer filling bag 5. The friction layer 1002 has good strength to realize the protection function. Its high friction can also make it difficult for relative movement to occur between the installation frame 102 and the outer filling bag 5. Even if there is shaking causing relative movement, the heat generated by friction can be transferred to the inner expansion layer 1001 through the heat conductive mesh 1003 and the heat conductive beads 1004, causing it to expand due to heat and further press against the friction layer 1002 and the installation frame 102, thereby avoiding continuous relative movement and causing greater wear.

[0046] The inner expansion layer 1001 is made of a thermal expansion rubber material, and the friction layer 1002 is made of a hard material with high friction, such as a carbon fiber composite material.

[0047] The outer filling capsule 5 and the elastic liquid capsule 9 are both filled with electrorheological fluid and are connected to an electric field generator. The electrorheological fluid is liquid in normal state. When the push plate 8 and the elastic liquid capsule 9 are squeezed, the electrorheological fluid inside them will enter the outer filling capsule 5, thereby causing it to expand and fill the gap between the outer filling capsule 5 and the mounting frame 102 and press it tightly. After power is turned on, it turns into solid properties for high-strength support. The application of electrorheological fluid and electric field generator belongs to the prior art and will not be repeated here. The outer filling capsule 5 and the elastic liquid capsule 9 are selected from materials with high strength, corrosion resistance, elasticity, wear resistance and compatibility with electrorheological fluid, such as rubber and polyurethane materials.

[0048] During installation, the car top 2 is placed on the upper side of the guide assembly 3 through an external device, and the suspension platform 6 is slowly lowered toward the guide assembly 3, wherein the guide bar 602 should be aligned with the guide groove until the car top 2 is stably placed on the guide assembly 3, and then the electromagnet 7 is started to adsorb the fixed assembly 4, wherein the magnet block 407 is adsorbed to move in the direction of approaching and squeeze the elastic member 406, and when the annular arc groove 408 on the rear side is aligned with the magnetic positioning column 403, the pair of magnetic positioning columns 403 are retracted from the positioning hole by their own adsorption to leave the first positioning hole. The magnet block 407 then continues to push the hollow fixed column 401 out of the movable slot and into the fixed slot to complete the fixation of the car roof 2. After the hollow fixed column 401 moves to the fixed slot, it will squeeze the push plate 8. When the push plate 8 and the elastic liquid capsule 9 are squeezed, the electrorheological fluid inside them will enter the outer filling capsule 5, thereby causing it to expand and fill the gap between the outer filling capsule 5 and the installation frame 102 and press it tightly. After power is turned on, it will turn into solid properties for high-strength support. At this point, the installation is completed. Compared with the fixed structure in the prior art, the present invention The automatic fixing method is very simple, and when the elevator is accidentally powered off, although the electrorheological fluid will return to a liquid state, the electromagnet 7 will also lose power and lose its magnetic field, thereby disconnecting the adsorption of the magnet block 407. Under the elastic reset action of the elastic member 406, the inner moving block 405 will also move and reset, and the annular arc groove 408 squeezes the magnetic positioning column 403 to move it outward until it is inserted into the second positioning groove to lock the hollow fixing column 401 so that it will not fall off from the fixing groove, and the car top 2 can still be fixed even after power failure. Of course, the electromagnet can also be actively closed after installation to achieve the above effect. When the car top 2 needs to be disassembled, changing the current direction of the electromagnet 7 can change its magnetic field, thereby repelling the magnet block 407 and causing it to move in a direction away from the magnet block 407 until the other annular arc groove 408 is aligned with the magnetic positioning column 403. At this time, the magnetic positioning column 403 retracts into the positioning hole and leaves the second positioning groove. The hollow fixed column 401 can return to the moving groove under the repulsive effect, and the car top 2 can be successfully removed.

[0049] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0050] In addition, it should be understood that although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that those skilled in the art can understand.

Claims

1. An elevator car top fixing structure, characterized in that: include: A car (1), the car (1) comprising a car body (101), the upper end of the car body (101) being fixedly connected to an integrally formed mounting frame (102), the four corners of the inner end of the mounting frame (102) being fixedly connected to corner posts (103), the inner end of the mounting frame (102) being provided with a plurality of evenly distributed movable grooves, and matching fixed components (4) being slidably mounted in the movable grooves; A car roof (2) is installed on the inner side of the installation frame (102), the lower end of the car roof (2) is fixedly connected to a suspension platform (6), the outer end of the car roof (2) is fixedly connected to four evenly distributed external filling bags (5), the outer side wall of the car roof (2) is also provided with a plurality of evenly distributed fixing grooves, and the fixing grooves respectively correspond to the fixing components (4), an electromagnet (7) is installed inside the fixing groove, a matching push plate (8) is slidably installed at the opening of the fixing groove, an elastic liquid bag (9) is fixedly connected between the push plate (8) and the electromagnet (7), and an internal pipeline is connected between the elastic liquid bag (9) and the external filling bag (5); The guide assembly (3) is fixedly installed at the inner junction of the car body (101) and the installation frame (102), and the car roof (2) is installed on the upper side of the guide assembly (3).

2. An elevator car top fixing structure according to claim 1, characterized in that: The fixing assembly (4) comprises a hollow fixing column (401) and a pair of first sliding blocks (402), and the pair of first sliding blocks (402) are symmetrically mounted on the outer ends of the hollow fixing column (401), a pair of first sliding grooves matching the first sliding blocks (402) are provided on the inner side wall of the movable groove, and the first sliding blocks (402) are slidably connected in the first sliding grooves, and a pair of symmetrically distributed positioning holes are also provided on the hollow fixing column (401), matching magnetic positioning columns (403) are slidably mounted in the positioning holes, and the outer ends of the magnetic positioning columns (403) are fixedly connected to the second sliding blocks (404), and the positioning holes are provided with a pair of symmetrically distributed positioning holes, and the matching magnetic positioning columns (403) are slidably mounted in the positioning holes, and the second sliding blocks (404) are fixedly connected to the outer ends of the magnetic positioning columns (403). A second slide groove matching the second slider (404) is provided on the side wall, and the second slider (404) is slidably connected in the second slide groove. A matching inner moving block (405) is slidably installed in the hollow fixed column (401). The inner moving block (405) is fixedly connected to a magnet block (407) at one end close to the car top (2). Both ends of the inner moving block (405) are fixedly connected to elastic members (406). A pair of first positioning grooves matching the magnetic positioning column (403) are also provided on the inner side wall of the movable groove, and a pair of second positioning grooves matching the magnetic positioning column (403) are provided on the inner side wall of the fixed groove.

3. An elevator car top fixing structure according to claim 2, characterized in that: The end of the magnetic positioning column (403) close to the inner moving block (405) is a curved surface structure, and a pair of annular curved surface grooves (408) are opened at the outer end of the inner moving block (405), and the magnetic positioning column (403) is located between the pair of annular curved surface grooves (408).

4. The elevator car top fixing structure according to claim 1, characterized in that: The hanging platform (6) comprises a transparent cover tube (601), an LED lamp (603) is installed on the inner upper end of the transparent cover tube (601), and a plurality of guide bars (602) distributed in a circular array are fixedly installed on the outer end of the transparent cover tube (601).

5. The elevator car top fixing structure according to claim 4, characterized in that: The upper end of the transparent cover tube (601) is provided with a liquid storage tank (604), and the liquid storage tank (604) contains a colored liquid for warning. The guide strip (602) is provided with a color development cavity. A liquid outlet pipe is connected between the liquid storage tank (604) and the color development cavity, and the height of the liquid outlet pipe is higher than the liquid level of the colored liquid.

6. The elevator car top fixing structure according to claim 5, characterized in that: The upper area of ​​the guide strip (602) is made of transparent material, and the lower area is made of non-transparent material.

7. An elevator car top fixing structure according to claim 6, characterized in that: The guide assembly (3) comprises a limit frame (301), a guide tube (303) is fixedly mounted at the center of the limit frame (301) via four connecting plates (302), the guide tube (303) matches the transparent cover tube (601), a plurality of guide grooves distributed in an annular array are formed on the inner side of the guide tube (303), and the guide grooves match the guide bars (602).

8. The elevator car top fixing structure according to claim 1, characterized in that: The outer end of the outer filling bag (5) is covered with a protective layer (10), the protective layer (10) comprises an inner expansion layer (1001) and a friction layer (1002), the inner expansion layer (1001) is fixedly connected between the friction layer (1002) and the outer filling bag (5), a heat-conducting mesh (1003) is embedded at the connection between the inner expansion layer (1001) and the friction layer (1002), and the nodes on the heat-conducting mesh (1003) are all fixedly connected with heat-conducting beads (1004).

9. An elevator car top fixing structure according to claim 8, characterized in that: The inner expansion layer (1001) is made of a thermal expansion rubber material, and the friction layer (1002) is made of a hard material with high friction.

10. The elevator car top fixing structure according to claim 1, characterized in that: The outer filling capsule (5) and the elastic liquid capsule (9) are both filled with electrorheological fluid and are commonly connected to an electric field generator.

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