Free door capable of being accurately reset for cold storage

Abstract

The utility model discloses a cold storage free door capable of resetting accurately, which relates to the field of free doors and comprises a door frame in a concentric-square-shaped structure, the door frame is rotatably provided with two oppositely-opened rotating doors through rotating shafts, and the back end of the door frame and the back ends of the rotating doors are provided with resetting mechanisms. Limiting mechanisms are installed at the positions, located at the front ends of the rotating doors, of the inner side of the door frame, the limiting mechanisms are used for limiting the rotating doors which are rotated to be opened by 90 degrees, handles of C-shaped structures are installed at the front ends of the two rotating doors correspondingly, and rotating round grooves matched with the outer walls of the rotating shafts are formed in the rotating ends of the rotating doors. And the rotating door is fixedly connected with the rotating shaft through a rotating circular groove. According to the utility model, through the arrangement of the limiting mechanism, the rotating door can be limited in an open state when large-batch goods are put in or taken out, so that the large-batch goods can be put in and taken out conveniently.

Description

Technical Field

[0001] The utility model relates to the field of free doors, in particular to a cold storage free door which can be accurately reset. Background Art

[0002] A free door is a door that is normally closed and can be opened by applying a push or pull force. It can be used in cold storage to avoid the problem of excessive cold air leakage caused by the rotating door being open for a long time due to staff forgetting to close the door when entering or leaving the cold storage.

[0003] In the prior art, cold storage is used to store frozen goods, so it is often necessary to put goods in or out of the warehouse. Especially when large quantities of goods are put in or out of the warehouse, free automatic resetting may interfere with the putting in and out of the goods, resulting in a decrease in the efficiency of putting in and out of the warehouse. Utility Model Content

[0004] The purpose of the present invention is to provide a cold storage free door that can be accurately reset in order to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cold storage free door that can be accurately reset, comprising a door frame with a ring-shaped structure, the door frame is equipped with two opposing rotating doors through a rotating shaft, the back end of the door frame and the back end of the rotating door are equipped with a reset mechanism, the inner side of the door frame is located at the front end of the rotating door and a limiting mechanism is installed, the limiting mechanism is used to limit the rotating door that is rotated to open ninety degrees, the front ends of the two rotating doors are both equipped with a handle with a C-shaped structure, the rotating end of the rotating door is provided with a rotating circular groove that coincides with the outer wall of the rotating shaft, the rotating door and the rotating shaft are fixedly connected through the rotating circular groove, and the top and bottom ends of the rotating shaft are fixedly connected to the upper and lower ends of the inner wall of the door frame.

[0006] As a further solution of the present invention: the limiting mechanism includes a fixed shaft fixedly connected to both sides of the inner wall of the door frame, the cross-section of the fixed shaft is a "convex" structure inclined at ninety degrees, and a limiting arm is rotatably installed on the outer wall of the thin shaft portion of the fixed shaft, and the top of the limiting arm has an opening on the side away from the rotating door, and a rubber damper is installed at the rotating connection between the limiting arm and the thin shaft portion of the fixed shaft.

[0007] As a further solution of the present invention: magnets are fixedly installed on both sides of the inner wall of the door frame at the opening position of the limiting arm, and an iron sheet is fixedly connected to the inner wall of the opening of the limiting arm.

[0008] As a further solution of the present invention: the reset mechanism includes fixed ears installed on both sides of the back end of the door frame, the bottom end of the fixed ear is rotatably installed with a rotating shaft, the bottom end of the rotating shaft is fixedly connected to a rotating arm, the inner wall of the rotating arm is slidably connected with a telescopic rod passing through the outside of the rotating arm, and the end of the telescopic rod away from the rotating arm is rotatably installed with a rotating seat fixedly connected to the back end of the rotating door.

[0009] As a further solution of the present invention: an anti-slip portion is formed on one end of the telescopic rod located on the inner wall of the rotating arm, the wide portion of the inner wall of the rotating arm coincides with the outer wall of the anti-slip portion, the inner wall opening of the rotating arm coincides with the outer wall of the telescopic rod, and a spring fixedly connected to one end of the anti-slip portion of the telescopic rod is installed on the inner wall of the rotating arm.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] 1. By setting a limit mechanism, the setting of the limit mechanism can limit the revolving door to an open state when a large number of goods are put into or taken out of the warehouse, thereby facilitating the entry and exit of a large number of goods. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the utility model;

[0013] Figure 2 This is a schematic diagram of the installation of the reset mechanism of the utility model;

[0014] Figure 3 This is a schematic diagram of the installation of the return spring of the present utility model.

[0015] In the figure: 1. Door frame; 2. Rotating door; 3. Handle; 4. Fixed shaft; 5. Limiting arm; 6. Magnet; 7. Fixed ear; 8. Rotating shaft; 9. Rotating arm; 10. Telescopic rod; 11. Rotating seat; 12. Rotating shaft; 13. Spring. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] See also Figures 1 to 3In the embodiment of the present invention, the cold storage free door that can be accurately reset includes a door frame 1 with a ring-shaped structure. The door frame 1 is rotatably installed with two opposing rotating doors 2 through a rotating shaft 12. A reset mechanism is installed at the back end of the door frame 1 and the back end of the rotating door 2. A limiting mechanism is installed at the front end of the rotating door 2 on the inner side of the door frame 1. The limiting mechanism is used to limit the rotating door 2 that is rotated to open ninety degrees. A handle 3 with a C-shaped structure is installed at the front end of the two rotating doors 2. A rotating circular groove is provided at the rotating end of the rotating door 2 that coincides with the outer wall of the rotating shaft 12. The rotating door 2 is fixedly connected to the rotating shaft 12 through the rotating circular groove. The top and bottom ends of the rotating shaft 12 are fixedly connected to the upper and lower ends of the inner wall of the door frame 1.

[0018] In this embodiment, when a small amount of goods is moved into the cold storage from outside or when a small amount of goods is moved out of the cold storage, the handle 3 can be pushed or pulled, and the handle 3 drives the rotating door 2 to open. When the rotating door 2 is opened, the reset mechanism is synchronously actuated by the rotation of the rotating door 2. After the person opens the rotating door 2, no force is applied to the rotating door 2, and the reset mechanism is reset, pushing the rotating door 2 to close.

[0019] When a large amount of goods needs to be moved into the cold storage from the outside, or when a large amount of goods needs to be moved out of the cold storage, the staff needs to move back and forth through the door frame 1 during the transportation process. At this time, after the revolving door 2 is opened, the fiber mechanism is rotated ninety degrees by rotating the limit mechanism to block the opened revolving door 2, so that the revolving door 2 is in the open state, thereby facilitating the entry and exit of a large amount of goods.

[0020] Please refer to Figure 1 The limiting mechanism includes a fixed shaft 4 fixedly connected to both sides of the inner wall of the door frame 1. The cross-section of the fixed shaft 4 is a "convex" structure inclined at ninety degrees. A limiting arm 5 is rotatably installed on the outer wall of the thin shaft portion of the fixed shaft 4. The top of the limiting arm 5 has an opening on the side away from the rotating door 2. A rubber damper is installed at the rotating connection between the limiting arm 5 and the thin shaft portion of the fixed shaft 4. The setting of the rubber damper can increase the resistance of the limiting arm 5 during the rotation process, and avoid the problem of the limiting arm 5 continuing to rotate downward in the process of blocking the rotating door 2. Magnets 6 are fixedly installed on both sides of the inner wall of the door frame 1 at the opening position of the limiting arm 5, and an iron sheet is fixedly connected to the inner wall of the opening of the limiting arm 5.

[0021] In this embodiment, after the revolving door 2 is opened, a force is applied to the revolving door 2, and at the same time, the limit arm 5 is pushed to rotate downward from the vertical state. At this time, the limit arm 5 blocks the revolving door 2 from rotating and opening, preventing the resetting mechanism from driving the revolving door 2 to close. This facilitates the entry or exit of a large amount of goods without the need to repeatedly open the revolving door 2.

[0022] When the limiting mechanism for the rotating door 2 is canceled, the limiting arm 5 is reset upward by pulling the limiting arm 5 upward until the notch of the limiting arm 5 contacts the magnet 6. The magnetic attraction between the magnet 6 and the iron sheet limits the limiting arm 5 to prevent the limiting arm 5 from rotating naturally.

[0023] Please refer to Figure 2 and Figure 3 The reset mechanism includes fixed ears 7 installed on both sides of the back end of the door frame 1, the bottom end of the fixed ear 7 is rotatably installed with a rotating shaft 8, the bottom end of the rotating shaft 8 is fixedly connected to a rotating arm 9, the inner wall of the rotating arm 9 is slidably connected with a telescopic rod 10 that penetrates to the outside of the rotating arm 9, and the end of the telescopic rod 10 away from the rotating arm 9 is rotatably installed with a rotating seat 11 fixedly connected to the back end of the rotating door 2.

[0024] In this embodiment, when the revolving door 2 is opened, the revolving door 2 drives the revolving seat 11 to perform synchronous movement. At this time, the revolving seat 11 and the telescopic rod 10 rotate relative to each other. Therefore, when the revolving seat 11 pushes the telescopic rod 10 to rotate, the end of the telescopic rod 10 connected to the revolving seat 11 rotates accordingly. During the rotation process, the telescopic rod 10 also pushes the rotating arm 9 to rotate around the rotating shaft 8. However, since the rotation center of the revolving door 2 does not coincide with the rotation center of the rotating arm 9, the telescopic rod 10 slides in the rotating arm 9, and the return spring 13 is compressed during this process.

[0025] After the limiting force applied to the rotating door 2 is removed, or the limiting mechanism on the rotating door 2 is cancelled, the spring 13 is reset, and the rotating door 2 can be pushed to reset and close.

[0026] Please refer to Figure 3 The telescopic rod 10 is located on one end of the inner wall of the rotating arm 9 and is formed with an anti-slip portion. The wide part of the inner wall of the rotating arm 9 coincides with the outer wall of the anti-slip portion. The inner wall opening of the rotating arm 9 coincides with the outer wall of the telescopic rod 10, and the inner wall of the rotating arm 9 is installed with a spring 13 fixedly connected to one end of the anti-slip portion of the telescopic rod 10.

[0027] In this embodiment, the design of the anti-detachment portion can prevent the telescopic rod 10 from detaching from the inner cavity of the rotating arm 9.

[0028] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cold storage free door capable of precise resetting, comprising a door frame (1) in a circular structure, wherein the door frame (1) is rotatably mounted with two oppositely opening rotating doors (2) via a rotating shaft (12), and characterized in that: A reset mechanism is installed at the back end of the door frame (1) and the back end of the rotating door (2); a limiting mechanism is installed on the inner side of the door frame (1) at the front end of the rotating door (2); the limiting mechanism is used to limit the rotating door (2) that is rotated and opened ninety degrees; a handle (3) with a C-shaped structure is installed at the front end of each of the two rotating doors (2); a rotating circular groove that matches the outer wall of the rotating shaft (12) is opened at the rotating end of the rotating door (2); the rotating door (2) and the rotating shaft (12) are fixedly connected through the rotating circular groove; the top and bottom ends of the rotating shaft (12) are fixedly connected to the upper and lower ends of the inner wall of the door frame (1).

2. The precisely resettable cold storage free door according to claim 1 is characterized in that: The limiting mechanism comprises a fixed shaft (4) fixedly connected to both sides of the inner wall of the door frame (1); the cross section of the fixed shaft (4) is a "convex"-shaped structure inclined at ninety degrees; a limiting arm (5) is rotatably mounted on the outer wall of the thin shaft portion of the fixed shaft (4); the top end of the limiting arm (5) is provided with an opening on a side away from the rotating door (2); and a rubber damper is mounted at the rotational connection between the limiting arm (5) and the thin shaft portion of the fixed shaft (4).

3. The precisely resettable cold storage free door according to claim 2 is characterized in that: Magnets (6) are fixedly mounted on both sides of the inner wall of the door frame (1) at the opening position of the limiting arm (5), and an iron sheet is fixedly connected to the inner wall of the opening of the limiting arm (5).

4. The precisely resettable cold storage free door according to claim 3 is characterized in that: The reset mechanism comprises fixed ears (7) mounted on both sides of the back end of the door frame (1); a rotating shaft (8) is rotatably mounted on the bottom end of the fixed ears (7); a rotating arm (9) is fixedly connected to the bottom end of the rotating shaft (8); a telescopic rod (10) extending through the outside of the rotating arm (9) is slidably connected to the inner wall of the rotating arm (9); and a rotating seat (11) fixedly connected to the back end of the rotating door (2) is rotatably mounted on one end of the telescopic rod (10) away from the rotating arm (9).

5. The precisely resettable cold storage free door according to claim 4 is characterized in that: An anti-slip portion is formed on one end of the telescopic rod (10) located on the inner wall of the rotating arm (9), the wide portion of the inner wall of the rotating arm (9) coincides with the outer wall of the anti-slip portion, the inner wall opening of the rotating arm (9) coincides with the outer wall of the telescopic rod (10), and a spring (13) fixedly connected to one end of the anti-slip portion of the telescopic rod (10) is installed on the inner wall of the rotating arm (9).

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