Electric lifting door of cold storage

Abstract

The utility model discloses an electric lifting door for a refrigeration house, which comprises a door frame, a lifting door and a lifting mechanism for driving the lifting door to ascend, an upper protruding plate is fixed to the upper end of the door plate, a lower protruding plate is fixed to the lower end of the door plate, a sealing gasket is fixed to the inner wall of the lower protruding plate, the hinge seat is installed at the upper end of the door plate, a limiting rod is arranged at the lower end of the door plate, and a through hole allowing the limiting rod to penetrate through is formed in the surface of the hinge seat. The door plate slides in the length direction of the guide rail, and the lifting mechanism is installed at the upper end of the door frame. The upper protruding plate is fixed to the upper end of the door plate, the lower protruding plate is fixed to the lower end of the door plate, the sealing gasket between the upper protruding plate and the lower protruding plate increases the sealing performance when the door plate is closed, sliding friction does not exist between the sealing gasket and the upper protruding plate when the door plate is opened and closed, abrasion of the sealing gasket is reduced, the service life of the sealing gasket is prolonged, and the maintenance period is prolonged. And energy waste caused by air leakage is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of the production of antimony pentafluoride, and more specifically, relates to an electric lifting door for a cold storage. Background Art

[0002] At present, a rapid lifting door is an industrial door lifting door used in industrial plants. Its door panel is made of color steel plate. During production, heat-insulating materials with heat-insulating functions are filled inside to strengthen the heat insulation of the rapid lifting door, which has the advantage of heat preservation. It is covered with a steel plate on the outside and undergoes surface anti-corrosion and rust-proof treatment. It is commonly used for cold storage doors. The rapid lifting door is composed of multiple door panels combined together;

[0003] Publication date: September 9, 2022; Publication (Announcement) Number: CN217400712 discloses a door body for a rigid rapid lifting door. It is formed by arranging a plurality of front split door panels and rear split door panels at intervals front and back. Rollers are respectively arranged at both ends of the front split door panel and the rear split door panel. The lowermost one is the rear split door panel, and each rear split door panel is movably connected to the front split door panel above it. The utility model is provided with front split door panels and rear split door panels connected in a sliding manner. During the lifting process, the lower rear split door panel and the front split door panel above it overlap front and back together. In this way, after the entire door panel is lifted, its height is basically equivalent to half of the original height, so that it can adapt to factories and warehouses with more heights. At the same time, since the hanging height is reduced, the safety factor is also improved;

[0004] The above-mentioned existing technical solutions have the following defects: The sealing between multiple door panels connected end to end is carried out through a gasket. Long-term opening and closing of the door body causes the sealing structure at this place to wear quickly, resulting in sealing failure, air leakage, seriously affecting the heat preservation effect, increasing energy consumption, and having a short maintenance cycle and high maintenance cost. Summary of the Utility Model

[0005] To solve the defects existing in the above technologies, the utility model provides an electric lifting door for a cold storage, aiming to improve the problem that the long-term opening and closing of the door body causes the sealing structure to wear quickly and result in sealing failure.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] An electric lifting door for a cold storage includes a door frame, a lifting door, and a lifting mechanism for driving the lifting door to rise;

[0008] On both sides of the door frame, guide rails are respectively fixed; the lifting door includes a plurality of door panels connected end to end and hinge seats arranged at the joints. An upper convex plate is fixed at the upper end of the door panel, a lower convex plate is fixed at the lower end of the door panel, a sealing gasket is fixed on the inner wall of the lower convex plate, the hinge seat is installed at the upper end of the door panel, a limiting rod is arranged at the lower end of the door panel, and a through hole for the limiting rod to penetrate is formed on the surface of the hinge seat; the door panel slides along the length direction of the guide rail, and the lifting mechanism is installed at the upper end of the door frame.

[0009] In an embodiment of the present invention, a column is further included. The column is fixed to the side wall of the door frame. The guide rail includes a vertical part and a horizontal part. The upper end of the vertical part is smoothly butted with the horizontal part through an arc-shaped track. A door body limiting groove is arranged between the column and the vertical part.

[0010] In an embodiment of the present invention, the door panel includes a steel plate outer shell and a polystyrene foam board filled inside the shell. The anti-collision steel plate I and the polystyrene foam board are arranged to have the functions of fire prevention and heat insulation at the same time.

[0011] In an embodiment of the present invention, the hinge seats are symmetrically arranged at both ends of the door panel. A plug hole is formed in the lower convex plate. The limiting rod chute is inserted into the plug hole. A limiting groove corresponding to the hinge seat is formed on the surface of the lower convex plate, and the upper end of the hinge seat is cooperatively arranged in the limiting groove.

[0012] In an embodiment of the present invention, rollers are respectively rotatably installed at both ends of the door panel. The rollers are slidably clamped in the guide rail. A sealing strip is fixed at the contact position between the bottom of the lowermost door panel of the lifting door and the ground. The sealing structure of the sealing strip is a bellows plate.

[0013] In an embodiment of the present invention, the lifting mechanism includes a rotating rod and a winding roller. The rotating rod is rotatably installed at the upper end of the door frame. The winding roller is coaxially and fixedly connected to the shrinking rotating rod. A steel wire rope is wound on the surface of the winding roller, and the free end of the steel wire rope is fixedly connected to the lifting door.

[0014] In an embodiment of the present invention, two winding rollers are symmetrically arranged. The two winding rollers are respectively arranged on both sides of the lifting door. The steel wire ropes are arranged in one-to-one correspondence with the winding rollers. The lower ends of the two steel wire ropes are fixed at both ends of the lowermost door panel of the lifting door.

[0015] In an embodiment of the present invention, a forward and reverse motor is installed at the upper end of the door frame. The driving shaft of the forward and reverse motor is in transmission connection with the rotating rod. A protective cover is covered at the upper end of the door frame. The winding roller is arranged in the protective cover;

[0016] The forward and reverse motor, reducer, chain, pulley and other components are mutually transmitted. The motor drives the reducer, the reducer drives the rotating rod, and the wire rope is reeled in to realize the lifting function of the door. The design has a simple structure and stable operation.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] The lower convex plate at the lower end of the door panel is butt-jointed with the upper convex plate at the upper end of the adjacent door panel, and a rotating connection structure is formed with a limit rod arranged at the lower end of the door panel through a hinge seat installed on the upper end of the door panel. The through hole on its surface is a hole on the hinge seat, allowing the door panel to rotate around its axis; not only the sealing of the door is improved, but also the installation steps are simplified through the design of the limit rod, making it easy to disassemble and replace the door panel. The door panels are connected end to end through the hinge seat to form an openable frame. The upper convex plate is fixed to the upper end of the door panel, and the lower convex plate is fixed to the lower end of the door panel. The sealing gasket between the two increases the sealing performance of the door panel when it is closed, and there is no sliding friction between the sealing gasket and the upper convex plate when opening and closing, thereby reducing the wear of the sealing gasket, increasing the service life of the sealing gasket, extending the maintenance cycle, reducing maintenance costs, and avoiding energy waste caused by air leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the electric lifting door of the cold storage in the embodiment of the utility model;

[0020] Figure 2 It is a side view structural diagram of two adjacent door panels in an embodiment of the utility model;

[0021] Figure 3 In the embodiment of the utility model Figure 2 The structural diagram at A in the middle;

[0022] Figure 4 This is a schematic diagram of a three-dimensional structure of adjacent door panels connected in an embodiment of the utility model;

[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of a single door panel in an embodiment of the utility model;

[0024] Figure 6 This is a schematic diagram of the structure of a door panel cut away in an embodiment of the utility model;

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the hinged seat in the embodiment of the utility model.

[0026] In the figure: 100, door frame; 110, guide rail; 300, lifting door; 310, door panel; 311, upper convex plate; 312, limit chute; 313, lower convex plate; 314, elastic rubber bellows; 315, gasket; 317, insertion hole; 319, limit groove; 330, hinge seat; 350, limit rod; 500, lifting mechanism; 510, rotating rod; 530, winding roller; 550, forward and reverse motor; 551, emergency hand-pulled chain; 570, counterweight spring; 3121, limit slider; 3122, compression spring; 3123, hexagon socket head cap screw. Detailed implementation manner

[0027] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the following further details the present utility model in combination with embodiments.

[0028] It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0029] In the embodiments, unless otherwise specified, the means used are all conventional means in the art.

[0030] Please refer to Figures 1-7 , this application provides a cold storage electric lifting door, including a door frame 100, a lifting door 300 and a lifting mechanism 500 for driving the lifting door 300 to rise;

[0031] On both sides of the door frame 100, guide rails 110 are respectively fixed; the lifting door 300 includes a plurality of door panels 310 connected end to end and hinge seats 330 arranged at the joints. An upper convex plate 311 is fixed to the upper end of the door panel 310, a lower convex plate 313 is fixed to the lower end of the door panel 310, a gasket 315 is fixed to the inner wall of the lower convex plate 313, the hinge seat 330 is installed at the upper end of the door panel 310, a limit rod 350 is arranged at the lower end of the door panel 310, and a through hole for the limit rod 350 to penetrate is formed on the surface of the hinge seat 330; the door panel 310 slides along the length direction of the guide rail 110, and the lifting mechanism 500 is installed at the upper end of the door frame 100. The lifting mechanism 500 is used to drive the lifting door 300 to rise along the guide rail 110, and the door panel 310 slides along the length direction of the guide rail 110.

[0032] The door frame 100 is fixed to the wall through expansion screws. A bearing seat fixed to the wall is arranged at the upper end of the door frame 100. The rotating rod 510 rotatably penetrates through the bearing seat through a bearing. A counterweight spring 570 is sleeved on the surface of the rotating rod 510. One end of the counterweight spring 570 is fixedly connected to the rotating rod 510, and the other end of the counterweight spring 570 is fixedly connected to the bearing seat;

[0033] The door frame 100 is firmly fixed to the wall through expansion bolts, ensuring the stability and safety of the door frame 100. At the same time, the setting of the rotating rod 510 and the counterweight spring 570 enables the door frame 100 to automatically adjust and maintain balance when subjected to external forces, effectively preventing the driving difficulty of the forward and reverse motor 550 due to excessive self-weight. In addition, the design of the counterweight spring 570 further enhances the stability and safety of the door frame 100, making it more secure and reliable.

[0034] In an embodiment of the present utility model, there is also a column, the column is fixed to the side wall of the door frame 100, the guide rail 110 includes a vertical part and a horizontal part, the upper end of the vertical part is smoothly butted with the horizontal part through an arc-shaped track, and a door body limit groove is provided between the column and the vertical part.

[0035] In an embodiment of the present utility model, the door panel 310 includes a steel plate outer shell and a polystyrene foam board filled inside the shell. The setting of the anti-collision steel plate one and the polystyrene foam board has the functions of fire prevention and heat insulation; and the polystyrene foam board is detachably arranged to ensure its heat insulation performance when used in environments such as cold storages, and it is convenient to regularly replace the aged internal heat insulation materials.

[0036] In an embodiment of the present utility model, the hinge seats 330 are symmetrically arranged at both ends of the door panel 310. The lower convex plate 313 is provided with a plug hole 317, the sliding groove of the limit rod 350 is inserted into the plug hole 317, and a limit groove 319 corresponding to the hinge seat 330 is provided on the surface of the lower convex plate 313. The upper end of the hinge seat 330 is fitted and arranged in the limit groove 319.

[0037] In an embodiment of the present utility model, rollers are respectively rotatably installed at both ends of the door panel 310. The rollers are slidably clamped in the guide rail 110. A sealing strip is fixed at the contact position between the bottom of the lowermost door panel 310 of the lifting door 300 and the ground, and the sealing structure of the sealing strip is a bellows plate.

[0038] In an embodiment of the present utility model, the lifting mechanism 500 includes a rotating rod 510 and a winding roller 530. The rotating rod 510 is rotatably installed at the upper end of the door frame 100. The winding roller 530 is coaxially and fixedly connected to the retractable rotating rod 510. A steel wire rope is wound on the surface of the winding roller 530, and the free end of the steel wire rope is fixedly connected to the lifting door 300.

[0039] In one embodiment of the utility model, two winding rollers 530 are symmetrically arranged, and the two winding rollers 530 are respectively arranged on both sides of the lifting door 300. The steel wire ropes are arranged one by one corresponding to the winding rollers 530, and the lower ends of the two steel wire ropes are fixed at the two ends of the lowermost door panel 310 of the lifting door 300.

[0040] In one embodiment of the utility model, a forward and reverse motor 550 is installed on the upper end of the door frame 100, and the driving shaft of the forward and reverse motor 550 is transmission-connected with the rotating rod 510. A protective cover is provided on the upper end of the door frame 100, and the winding roller 530 is arranged in the protective cover.

[0041] The forward and reverse motor 550 and the reducer, chain, pulley and other components are mutually transmitted, the motor drives the reducer, the reducer drives the rotating rod 510, and the lifting function of the door is realized by winding the wire rope. The design structure is simple and the operation is stable.

[0042] In one embodiment of the present utility model, a limit slide groove 312 is provided at the upper end of the door panel 310, the lower end of the hinge seat 330 is slidably inserted in the limit slide groove 312, a limit slider 3121 is slidably engaged in the limit slide groove 312, the limit slider 3121 is fixed to the lower end of the hinge seat 330, and a compression spring 3122 is connected between the limit slider 3121 and the inner wall of the limit slide groove 312;

[0043] The upper end of the door panel 310 is provided with a limiting slide groove 312 for limiting the hinge seat 330, and the lower end of the hinge seat 330 is designed to be slidably inserted in the limiting slide groove 312, so as to ensure that the hinge seat 330 can move up and down along the door panel 310. The limiting slide groove 312 is also provided with a limiting slider 3121 slidably engaged therein, and the limiting slider 3121 is fixedly connected to the lower end of the hinge seat 330, so that the hinge seat 330 can remain stable during the movement and will not be separated from the limiting slide groove 312. A compression spring 3122 of a buffer structure is connected between the limiting slider 3121 and the inner wall of the limiting slide groove 312. When the door panel 310 is subjected to external force during the upward and downward movement, the compression spring 3122 can absorb part of the impact force and play a buffering role, thereby protecting various components from damage and improving the safety of use.

[0044] In one embodiment of the present utility model, a threaded through hole is provided at the upper end of the door panel 310, a hexagonal stud 3123 is connected to the threaded through hole, the lower end of the hexagonal stud 3123 abuts against the upper end of the compression spring 3122, and the outer diameter of the compression spring 3122 is smaller than the inner diameter of the threaded through hole;

[0045] The hexagon socket stud 3123 is connected to the door panel 310 through a thread, and the compression spring 3122 installed at the lower end thereof abuts against the hexagon socket stud 3123 to provide the necessary pre-pressure. The outer diameter of the compression spring 3122 is smaller than the inner diameter of the threaded through hole. Such a structure is not only convenient for adjusting the compression degree of the door panel 310, but also allows the compression spring 3122 to be easily replaced when necessary to meet different pressure requirements, thereby ensuring the tightness and safety of the door panel 310.

[0046] In one embodiment of the utility model, a first magnet is disposed between the lower convex plate 313 and the sealing gasket 315, and a second magnet is disposed on the inner surface of the upper convex plate 311, and the first magnet and the second magnet are attracted to each other;

[0047] A first magnet is arranged between the lower convex plate 313 and the sealing gasket 315, and a second magnet that attracts the first magnet is arranged on the inner surface of the upper convex plate 311. The lower convex plates 313 and upper convex plates 311 of the adjacent door panels 310 are attracted to each other by magnetic force. When the upper convex plate 311 is opposite to the lower convex plate 313, the first magnet and the second magnet attract each other, thereby pressing the sealing gasket 315 to the joint between the lower convex plate 313 and the upper convex plate 311, and achieving a good sealing effect. This sealing device has a simple structure, is easy to install, and has good sealing performance.

[0048] In one embodiment of the present utility model, an elastic rubber bellows 314 is provided between the lower convex plate 313 and the sealing gasket 315, and the first magnet is provided in the elastic rubber bellows 314;

[0049] The elastic rubber bellows 314 is disposed between the lower convex plate 313 and the sealing pad 315, which not only provides an additional sealing layer, but also can adapt to changes in different shapes or sizes through its elastic properties to maintain the sealing effect. The first magnet is embedded in the elastic rubber bellows 314, and the adsorption effect of the magnet is utilized to enhance the sealing effect.

[0050] In an embodiment of the present invention, infrared sensors are respectively installed on both sides of the door frame 100 , and the forward and reverse motor 550 is transmission-connected with an emergency hand-pull chain 551 .

[0051] Working principle: The lower convex plate 313 at the lower end of the door panel 310 is butted against the upper convex plate 311 at the upper end of the adjacent door panel 310, and a rotation connection structure is formed with the limit rod 350 provided at the lower end of the door panel 310 through the hinge seat 330 installed at the upper end of the door panel 310. The through hole on its surface is the hole on the hinge seat 330, allowing the door panel 310 to rotate around its axis; not only the sealing of the door is improved, but also the design of the limit rod 350 simplifies the installation steps, making it easy to disassemble and replace the door panel 310. The door panels 310 are connected end to end through the hinge seat 330 to form an openable frame. The upper convex plate 311 is fixed to the upper end of the door panel 310, while the lower convex plate 313 is fixed to the lower end of the door panel 310. The sealing gasket 315 therebetween increases the sealing performance of the door panel 310 when it is closed, and there is no sliding friction between the sealing gasket 315 and the upper convex plate 311 when opening and closing, thereby reducing the wear of the sealing gasket 315, increasing the service life of the sealing gasket 315, extending the maintenance cycle, reducing maintenance costs, and avoiding energy waste caused by air leakage.

[0052] The above-mentioned embodiments only express several implementation methods of the utility model. The descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent.

[0053] It should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the utility model, and these are all within the scope of protection of the utility model. Therefore, the scope of protection of the utility model patent shall be based on the attached claims.

Claims

1. A cold storage electric lifting door, characterized in that: include A door frame (100), wherein guide rails (110) are respectively fixed on both sides of the door frame (100); A lifting door (300), the lifting door (300) comprising a plurality of door panels (310) connected end to end and a hinge seat (330) arranged at the connection, an upper convex plate (311) being fixed at the upper end of the door panel (310), a lower convex plate (313) being fixed at the lower end of the door panel (310), a sealing gasket (315) being fixed to the inner wall of the lower convex plate (313), the hinge seat (330) being mounted on the upper end of the door panel (310), a limiting rod (350) being arranged at the lower end of the door panel (310), and a through hole for the limiting rod (350) to pass through being opened on the surface of the hinge seat (330); A lifting mechanism (500) is used to drive the lifting door (300) to rise, the door panel (310) slides along the length direction of the guide rail (110), and the lifting mechanism (500) is installed on the upper end of the door frame (100).

2. The electric lifting door of the cold storage according to claim 1 is characterized in that: It also includes a column, which is fixed to the side wall of the door frame (100). The guide rail (110) includes a vertical portion and a horizontal portion. The upper end of the vertical portion is smoothly connected to the horizontal portion via an arc track. A door body limiting groove is provided between the column and the vertical portion.

3. The electric lifting door for cold storage according to claim 1 is characterized in that: The door panel (310) comprises a steel plate outer shell and a polystyrene foam board filled inside the outer shell. The arrangement of the anti-collision steel plate and the polystyrene foam board has both fire prevention and heat insulation effects.

4. The electric lifting door for cold storage according to claim 1 is characterized in that: The hinge seat (330) is symmetrically arranged at both ends of the door panel (310), the lower convex plate (313) is provided with a plug hole (317), the limit rod (350) slide groove is inserted into the plug hole (317), the surface of the lower convex plate (313) is provided with a limit groove (319) corresponding to the hinge seat (330), and the upper end of the hinge seat (330) is matched and arranged in the limit groove (319).

5. The electric lifting door for cold storage according to claim 1 is characterized in that: Rollers are rotatably mounted at both ends of the door panel (310), and the rollers are slidably engaged in the guide rail (110). A sealing strip is fixed at the bottom of the door panel (310) at the lower end of the lifting door (300) where it contacts the ground, and the sealing structure of the sealing strip is an accordion plate.

6. The electric lifting door for cold storage according to claim 1 is characterized in that: The lifting mechanism (500) comprises a rotating rod (510) and a winding roller (530), wherein the rotating rod (510) is rotatably mounted on the upper end of the door frame (100), and the winding roller (530) is coaxially fixedly connected to the retractable rotating rod (510), and a steel wire rope is wound around the surface of the winding roller (530), and the free end of the steel wire rope is fixedly connected to the lifting door (300).

7. The electric lifting door for cold storage according to claim 6, characterized in that: Two winding rollers (530) are symmetrically arranged, and the two winding rollers (530) are respectively arranged on both sides of the lifting door (300). The steel wire ropes are arranged in a one-to-one correspondence with the winding rollers (530), and the lower ends of the two steel wire ropes are fixed at the two ends of the lowermost door panel (310) of the lifting door (300).

8. The electric lifting door for cold storage according to claim 6, characterized in that: A forward and reverse motor (550) is installed at the upper end of the door frame (100); a driving shaft of the forward and reverse motor (550) is transmission-connected to the rotating rod (510); a protective cover is provided at the upper end of the door frame (100); and the winding roller (530) is arranged inside the protective cover.

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