Lifting sealing door

Abstract

The utility model relates to the technical field of industrial machinery, in particular to a lifting sealing door, which comprises a windshield assembly, and is characterized in that the windshield assembly comprises a top cross beam and a bottom cross beam, the bottom cross beam is provided with a sealing buckle strip, a rock wool board is arranged between the top cross beam and the bottom cross beam, and the sealing buckle strip is provided with a sealing buckle strip. One side of the top cross beam and one side of the bottom cross beam are jointly provided with a buffering cushion, a lifting cross beam piece is arranged on one side of the buffering cushion, a lifting assembly is arranged between the lifting cross beam piece and the buffering cushion, and the top cross beam is provided with a protection assembly. Multiple remarkable beneficial effects are achieved through innovative structural design: the door body has excellent sealing performance and 25dB sound insulation effect by adopting the combined design of the silica gel, the magnetic composite sealing buckle strip and the fireproof rock wool board, and meanwhile, the A1-level fireproof standard is met; and a unique oilless bearing guide system is matched with a 52 mm high organ protective cover, so that maintenance-free operation is realized, and 90% of dust invasion is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of industrial machinery technology, and in particular to a lifting and sealing door. Background Technology

[0002] Currently, traditional lifting doors widely used in industrial plants, cold storage facilities, and cleanrooms suffer from three major technical defects: In terms of sealing, ordinary rubber sealing strips are prone to aging and cracking, failing to meet the high sealing standards required for GMP cleanrooms; in terms of stability, single-sided drive easily leads to track misalignment and jamming, and the impact force during door descent is large (up to 200N or more), causing component deformation; and in terms of maintenance, traditional guide bearings require regular lubrication, and the protective covers are too short (<50mm), resulting in high maintenance costs and easy dust accumulation and wear. Although existing technologies have improved these issues by adding buffer pads or double-layer sealing strips, they still cannot simultaneously meet the requirements for long-term sealing, maintenance-free operation, and intelligent control. Therefore, there is an urgent need to develop a new type of lifting and sealing door with optimized structure to solve these technical challenges.

[0003] Chinese patent discloses a sealing door (publication number: CN 207538709 U) including a linkage component and a pressure strip; the bottom edge of the door panel has an open mounting groove for installing all components, and the surface of the door panel has a through hole communicating with the mounting groove; the linkage component includes a pressing body exposed outside the door panel and a component body accommodated within the mounting groove, the component body extends along the mounting groove and is slidably connected to the mounting groove, the pressing body extends outside the door panel through the through hole and is drively connected to the component body, and a set of secondary return springs is provided between the mounting groove and the linkage component to reset the component body and the pressing body. However, this sealing door has insufficient sealing performance, and ordinary rubber sealing strips are prone to aging and cracking, making it difficult to meet high-standard sealing requirements; secondly, the mechanical stability is poor, and the single-sided drive structure is prone to track deviation and door jamming; finally, the maintenance cost is high, the traditional lubrication system requires frequent maintenance and the protective structure is not perfect, therefore a lifting sealing door is needed. Utility Model Content

[0004] The purpose of this utility model is to solve the problems of insufficient sealing performance of existing sealing doors, the easy aging and cracking of ordinary rubber sealing strips, which makes it difficult to meet high-standard sealing requirements; secondly, poor mechanical stability, with the single-sided drive structure easily leading to track deviation and door jamming; and finally, high maintenance costs, with traditional lubrication systems requiring frequent maintenance and having inadequate protective structures. Therefore, a lifting sealing door is proposed.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: A lifting and sealing door, comprising a windshield assembly, characterized in that: the windshield assembly includes a top crossbeam and a bottom crossbeam; the bottom crossbeam is provided with a sealing strip; a rock wool board is provided between the top and bottom crossbeams; a buffer pad is provided on one side of both the top and bottom crossbeams; a lifting crossbeam component is provided on one side of the buffer pad; the number of lifting crossbeam components is two and they are correspondingly arranged; a lifting assembly is provided between the lifting crossbeam component and the buffer pad; and a protective assembly is provided on the top crossbeam; the number of protective assemblies is two and they are correspondingly arranged. Enhanced sealing: The combination of the bottom sealing strip and the rock wool board achieves a dual effect of airtightness and sound insulation (suitable for clean rooms / high-noise workshops); the fire resistance of the rock wool board (Class A non-combustible) improves the safety of the door; Optimized stability: The symmetrical design of the lifting crossbeam components avoids jamming caused by unilateral force; the buffer pad reduces impact vibration during door lifting and extending service life.

[0006] Preferably, the protective assembly includes a guide shaft, the bottom of which is connected to the top crossbeam and a connection point is provided with an oil-free bearing. A bearing washer is provided on the oil-free bearing. An accordion-style protective cover is provided on the outer wall of the guide shaft. The accordion-style protective cover has a height of 52mm, and a bearing washer is provided at the bottom of the accordion-style protective cover. An oil-free bearing is located at the bottom of the bearing washer. Maintenance-free operation: The oil-free bearing requires no lubrication, avoiding grease contamination (a key requirement in the pharmaceutical / food industries); Dust and damage prevention: The telescopic design of the accordion-style protective cover blocks dust intrusion, and the 52mm height balances the protection range with structural compactness; Precise guidance: The combination of double-layer bearings and washer ensures the verticality of the guide shaft, preventing door sway.

[0007] Preferably, the guide shaft is provided with hex socket head cap screws at both the top and bottom, a hose clamp is provided on one side of the outer wall of the guide shaft, a housing is provided on the outer wall of the guide shaft, and a connecting plate is provided on one side of the housing. The hex socket head cap screws provide strong shear resistance, suitable for high-frequency lifting conditions; the housing prevents external objects from colliding with the guide shaft, and the connecting plate enables modular quick-release.

[0008] Preferably, the lifting crossbeam includes a first connecting crossbeam, a second connecting crossbeam, and a third connecting crossbeam. A triangular fixing member is provided on one side of each of the first, second, and third connecting crossbeams, and a support plate is provided on the top of the triangular fixing member. The triangular configuration disperses lifting stress, and the support plate provides a motor / cylinder mounting position, adapting to various drive methods. The split crossbeam design can be made of aluminum alloy, reducing the door weight by more than 20%.

[0009] Preferably, the bellows cover has a lifting eye screw on one side. This allows the cover to be removed for cleaning or replacement without tools, saving downtime.

[0010] Preferably, the lifting assembly includes a rotating shaft with rollers mounted at both ends. A sliding groove shell is mounted on the outer wall of both the rotating shaft and the rollers, and the sliding groove shell is associated with the windshield assembly. The roller + groove shell combination converts sliding friction into rolling friction, reducing energy consumption by 15%; the enclosed structure of the groove shell isolates the operating noise of the rollers (measured ≤50dB).

[0011] The advantages of this utility model are:

[0012] This application achieves multiple significant benefits through innovative structural design: the combination of silicone + magnetic composite sealing strips and fireproof rock wool board gives the door excellent sealing performance (leakage rate <0.005m). 3 / h·m 2 It offers 25dB of sound insulation while meeting A1 fire protection standards. A unique oil-free bearing guide system, combined with a 52mm high accordion cover, enables maintenance-free operation (lifespan ≥ 100,000 cycles) and significantly reduces dust intrusion by 90%. Optimized design of the triangular fixing components and buffer pads ensures smoother door operation and reduces impact by 70%. Modular eye bolts and quick-release structures shorten maintenance time by 80% and reduce maintenance costs by 60%. Furthermore, the rolling friction structure and reserved intelligent interfaces reduce energy consumption by 15% and provide potential for intelligent upgrades. This overall solution is particularly suitable for industrial scenarios with stringent requirements for sealing, cleanliness, and reliability, such as those in the pharmaceutical and food industries. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the main structure of this utility model.

[0016] Figure 3 This utility model Figure 2 Sectional view of AA.

[0017] Figure 4 This utility model Figure 3 Enlarged view of I in the middle.

[0018] Figure 5 This utility model Figure 3 Enlarged view of section II.

[0019] Figure 6 This is a top view of the structure of this utility model.

[0020] Figure 7 This utility model Figure 6 Enlarged view of section III.

[0021] In the diagram: 1. Rock wool board; 2. Lifting beam; 3. Top beam; 4. Buffer pad; 5. Bottom beam; 6. Sealing strip; 7. Lifting eye screw; 8. First connecting beam; 9. Second connecting beam; 10. Third connecting beam; 11. Support plate; 12. Triangular fixing component; 13. Socket head cap screw; 15. Connecting plate; 16. Hose clamp; 17. Housing; 18. Guide shaft; 19. Bellows cover; 20. Bearing gasket; 21. Oil-free bearing; 22. Rotating shaft; 23. Roller; 24. Sliding groove housing. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0023] Example

[0024] Please see Figure 1-7 As shown, a lifting and sealing door includes a windshield assembly, characterized in that: the windshield assembly includes a top crossbeam 3 and a bottom crossbeam 5, the bottom crossbeam 5 is provided with a sealing strip 6, a rock wool board 1 is provided between the top crossbeam 3 and the bottom crossbeam 5, a buffer pad 4 is provided on one side of the top crossbeam 3 and the bottom crossbeam 5, two lifting crossbeams are provided on one side of the buffer pad 4, the number of the two lifting crossbeams is two and they are correspondingly arranged, a lifting assembly is provided between the two lifting crossbeams and the buffer pad 4, and a protective assembly is provided on the top crossbeam 3, the number of the two protective assemblies is two and they are correspondingly arranged. Enhanced sealing: the bottom sealing strip 6 combined with the rock wool board 1 achieves a dual effect of airtightness and sound insulation (suitable for clean rooms / high-noise workshops); the fire resistance of the rock wool board 1 (Class A non-combustible) improves the safety of the door; optimized stability: the symmetrical design of the two lifting crossbeams avoids jamming problems caused by unilateral force; the buffer pad 4 reduces the impact vibration during door lifting and extending service life.

[0025] In this embodiment, the protective assembly includes a guide shaft 18. The bottom of the guide shaft 18 is connected to the top crossbeam 3, and an oil-free bearing 21 is provided at the connection point. A bearing washer 20 is provided on the oil-free bearing 21. An accordion-style protective cover 19 is provided on the outer wall of the guide shaft 18. The height of the accordion-style protective cover 19 is 52mm. A bearing washer 20 is provided at the bottom of the accordion-style protective cover 19, and an oil-free bearing 21 is provided at the bottom of the bearing washer 20. Maintenance-free operation: The oil-free bearing 21 requires no lubrication, avoiding grease contamination (a key requirement in the pharmaceutical / food industries); Dust and damage prevention: The telescopic design of the accordion-style protective cover 19 blocks dust intrusion, and the 52mm height balances the protection range with structural compactness; Precise guidance: The combination of double-layer bearings and washers ensures the verticality of the guide shaft 18 and prevents the door from swaying.

[0026] In this embodiment, the guide shaft 18 is provided with hexagon socket head cap screws 13 at both the top and bottom. A hose clamp 16 is provided on one side of the outer wall of the guide shaft 18. A housing 17 is provided on the outer wall of the guide shaft 18, and a connecting plate 15 is provided on one side of the housing 17. The hexagon socket head cap screws provide strong shear resistance, which is suitable for high-frequency lifting conditions; the housing 17 prevents external objects from colliding with the guide shaft 18; and the connecting plate 15 enables modular quick disassembly.

[0027] In this embodiment, the two lifting beams include a first connecting beam 8, a second connecting beam 9, and a third connecting beam 10. A triangular fixing member 12 is provided on one side of each of the first connecting beam 8, the second connecting beam 9, and the third connecting beam 10. A support plate 11 is provided on the top of the triangular fixing member 12. The triangular configuration disperses lifting stress, and the support plate 11 provides a motor / cylinder mounting position, adapting to various drive methods. The split beam design can be made of aluminum alloy, reducing the door weight by more than 20%.

[0028] In this embodiment, a lifting eye screw 7 is provided on one side of the bellows cover 19. By providing the lifting eye screw 7, the cover can be disassembled for cleaning or replacement without tools, saving downtime.

[0029] In this embodiment, the lifting assembly includes a rotating shaft 22, with rollers 23 mounted at both ends of the rotating shaft 22. A sliding groove shell 24 is mounted on the outer wall of both the rotating shaft 22 and the rollers 23, and the sliding groove shell 24 is associated with the windshield assembly. The combination of rollers 23 and the groove shell converts sliding friction into rolling friction, reducing energy consumption by 15%; the enclosed structure of the groove shell isolates the operating noise of the rollers 23 (measured ≤50dB).

[0030] The implementation principle of this embodiment is as follows:

[0031] 1. Start-up Phase

[0032] When the door needs to be opened or closed, the motor (or other drive device) starts, which drives the rotating shaft 22 of the lifting assembly to rotate. The rollers 23 at both ends of the rotating shaft 22 begin to roll in the sliding groove 24, so that the entire door body rises or falls smoothly.

[0033] 2. Lifting / lowering process

[0034] Guide shaft 18 controls direction: When the door moves, the guide shaft 18 (fixed on the top crossbeam 3) ensures that the door moves vertically and does not sway left or right through the oilless bearings 21 and bearing washers 20 at both ends; Accordion guard 19 telescopic protection: As the door is raised and lowered, the accordion guard 19 will telescopic like an accordion to prevent dust from entering the guide shaft 18 and bearings and extend its service life; Triangular fixing component 12 stabilizes the structure: During the raising and lowering process, the first connecting crossbeam 8, the second connecting crossbeam 9, and the third connecting crossbeam 10 maintain overall rigidity through the triangular fixing component 12 to prevent deformation.

[0035] 3. Near the top or bottom

[0036] Buffer pad 4 absorbs impact: When the door is about to be fully opened or closed, the buffer pad 4 will contact the door frame first to absorb the impact force, avoid the door from hitting too hard, and reduce noise and wear; Sealing strip 6 presses the ground (when the door is closed): When the door is fully lowered to the bottom, the sealing strip 6 on the bottom beam 5 will press tightly against the ground to ensure airtightness (preventing dust, noise, and cold / hot air leakage).

[0037] 4. After completely shutting down

[0038] Rock wool board 1 provides sound and heat insulation: When the door is closed, the rock wool board 1 between the top beam 3 and the bottom beam 5 will block external noise and temperature changes (such as loud noise in the workshop or cold storage insulation); the protective components maintain long-term stability: the guide shaft 18, the oil-free bearing 21, and the bellows protective cover 19 work together to ensure that the door will not jam or wear out too quickly during long-term use.

[0039] 5. Special circumstances (such as maintenance or adjustment required)

[0040] The eye bolt 7 facilitates disassembly: If it is necessary to clean or replace the bellows cover 19, it can be quickly disassembled and installed using the eye bolt 7 without disassembling the entire door; the outer casing 17 protects the guide shaft 18: the guide shaft 18 is covered by the outer casing 17 to prevent it from being damaged by external forces, and the connecting plate 15 facilitates the installation and adjustment of the entire protective assembly.

[0041] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A lift seal door comprising a damper assembly, characterized by: The windshield assembly includes a top crossbeam (3) and a bottom crossbeam (5). The bottom crossbeam (5) is provided with a sealing strip (6). A rock wool board (1) is provided between the top crossbeam (3) and the bottom crossbeam (5). A buffer pad (4) is provided on one side of the top crossbeam (3) and the bottom crossbeam (5). A lifting crossbeam (2) is provided on one side of the buffer pad (4). There are two lifting crossbeams (2) and they are set accordingly. A lifting assembly is provided between the lifting crossbeam (2) and the buffer pad (4). A protective assembly is provided on the top crossbeam (3). There are two sets of protective assemblies and they are set accordingly.

2. A lift door as claimed in claim 1, wherein: The protective assembly includes a guide shaft (18), the bottom of which is associated with the top crossbeam (3) and an oilless bearing (21) is provided at the connection point. The oilless bearing (21) is provided with a bearing pad (20). The outer wall of the guide shaft (18) is provided with a bellows cover (19), the bellows cover (19) is 52mm high, and the bottom of the bellows cover (19) is provided with a bearing pad (20). The bottom of the bearing pad (20) is provided with an oilless bearing (21).

3. A lift door as claimed in claim 2, wherein: The guide shaft (18) is provided with hexagonal head screws (13) at the top and bottom. A hose clamp (16) is provided on one side of the outer wall of the guide shaft (18). A housing (17) is provided on the outer wall of the guide shaft (18). A connecting plate (15) is provided on one side of the housing (17).

4. A lift seal door according to claim 1, wherein: The lifting beam (2) includes a first connecting beam (8), a second connecting beam (9) and a third connecting beam (10). The first connecting beam (8), the second connecting beam (9) and the third connecting beam (10) are provided with a triangular fixing member (12) on one side. The top of the triangular fixing member (12) is provided with a support plate (11).

5. A lift door as claimed in claim 2, wherein: The bellows cover (19) has a lifting eye screw (7) on one side.

6. A lift door as claimed in claim 1, wherein: The lifting assembly includes a rotating shaft (22), with rollers (23) installed at both ends of the rotating shaft (22). A sliding groove shell (24) is installed on the outer wall of the rotating shaft (22) and the rollers (23). The sliding groove shell (24) is associated with the windshield assembly.

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