Cold storage door with reset structure

Abstract

The invention discloses a cold storage door with a reset structure, which comprises a door body mounting frame and a reset mechanism, the upper end of the door body mounting frame is connected with an upper supporting column, and the lower end of the door body mounting frame is fixedly provided with a lower supporting column; the upper end of the upper supporting column is movably inserted into a rotating hole formed in the upper fixing frame, an elastic piece used for pushing the door body mounting frame to reset is arranged between the door body mounting frame and the upper fixing frame, an arc-shaped face is arranged on the upper end face of the lower fixing frame, and a bearing is rotationally installed on the side wall of the lower end of the lower supporting column. The bearing is in surface rolling contact with the arc-shaped surface; a worker only needs to open the cold storage door and then leaves, door closing operation is not needed, the working efficiency is improved, the reset mechanism enables the cold storage door to be closed in place, leakage seams with a door opening are avoided, cold air loss is reduced, energy is saved, meanwhile, heat exchange between the cold storage and the outside is reduced, and material storage is facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of cold storage doors, and more specifically, relates to a cold storage door with a reset structure. Background Art

[0002] At present, cold storage doors refer to insulated and sealed doors installed in cold storage equipment, frozen warehouses and other freezing environment equipment. Cold storage is a storage room for frozen goods, and the temperature inside is usually set below zero. Cold storage doors use high-strength aluminum alloy profile door frames, which are high in strength, no deformation, beautiful in appearance and durable. The door leaves are seamlessly welded with stainless steel edging all around, which is sturdy, durable, no deformation and reasonable in structure.

[0003] The cold storage door leaf is generally foamed once by a polyurethane pressure injection machine. The polyurethane is dense and evenly fills the door, without shrinkage. The door surface is smooth and beautiful, and has reliable insulation performance.

[0004] In the prior art, for scenarios where frequent entry and exit of the cold storage is required, workers need to open and then manually close the cold storage door, which is cumbersome and leads to low work efficiency. Sometimes the door is not closed properly, which may cause gaps in the cold storage door and cause the loss of cold air, which not only wastes energy, but may also cause the temperature in the cold storage to rise, which is not conducive to the preservation of materials. Summary of the invention

[0005] In order to solve the defects existing in the above-mentioned technology, the present invention provides a cold storage door with a reset structure, aiming to improve the problem that the cold storage door cannot be closed automatically.

[0006] To achieve the above object, the technical solution of the present invention is as follows:

[0007] A cold storage door with a reset structure, comprising a door body mounting frame and a reset mechanism;

[0008] The upper end of the door body mounting frame is connected to an upper support column, and the lower end of the door body mounting frame is fixedly mounted with a lower support column, and the upper support column is coaxially arranged with the lower support column;

[0009] The reset mechanism includes an upper fixing frame and a lower fixing frame, the upper end of the upper support frame is movably inserted into a rotating hole opened in the upper fixing frame, an elastic member for pushing the door body mounting frame to reset is arranged between the door body mounting frame and the upper fixing frame, the lower support frame is rotatably connected to the lower fixing frame, an arc-shaped surface is opened on the upper end surface of the lower fixing frame, and the arc-shaped surface presents a V-shaped structure with high ends and low middle, a bearing is rotatably installed on the lower end side wall of the lower support frame, and the bearing is in rolling contact with the surface of the arc-shaped surface.

[0010] In one embodiment of the present invention, the lower fixing frame is provided with an axial hole, the lower support is rotatably inserted into the axial hole, the elastic member is a torsion spring, one end of the torsion spring is connected to the upper support, and the other end of the torsion spring is connected to the upper fixing frame.

[0011] In one embodiment of the present invention, a pin is fixed to the side wall of the lower end of the lower support, the bearing is rotatably mounted on one end of the pin, a retaining spring is clamped on the surface of the pin, and the retaining spring is arranged on both sides of the pin.

[0012] In one embodiment of the present invention, a mounting hole is formed on the lower side wall of the lower support, the pin is inserted into the mounting hole, a screw is provided at one end of the mounting hole, and the screw is threadedly connected to one end of the pin.

[0013] In one embodiment of the present invention, the upper end of the upper support is rotatably inserted into a rotating hole opened in the upper fixing frame, the elastic member is arranged in the rotating hole opened in the upper fixing frame, the lower end of the elastic member is in contact with the upper end of the upper support, and the elastic member is a compression spring.

[0014] In one embodiment of the present invention, the upper end of the rotating hole of the upper fixing frame is threadedly connected with a plug, the upper end of the elastic member abuts against the plug, the upper end of the plug is provided with a hexagonal groove, and the lower end of the upper support is fixedly connected to the door body mounting frame.

[0015] In one embodiment of the present invention, a door body mounting groove is provided on one side of the door body mounting frame, and a clamping groove is provided on the other side of the door body mounting frame. The clamping groove is arranged along the length direction of the door body mounting frame, and a sealing strip is clamped in the clamping groove.

[0016] In one embodiment of the present invention, a heating groove is provided on the side wall of the upper fixing frame, a heating wire is installed in the heating groove, a port of the heating groove is sealed by solid glue, a wiring terminal is fixed on the surface of the upper fixing frame, and the wiring terminal is electrically connected to the heating wire;

[0017] The upper end of the lower support is rotatably inserted into the mounting groove provided at the lower end of the door body mounting frame, a worm wheel is fixed on the surface of the lower support, a worm is rotatably mounted on the door body mounting frame, and the worm wheel is meshed with the worm;

[0018] A shaft sleeve is fixed in a mounting groove provided at the lower end of the door body mounting frame, the upper end of the lower support column is rotatably clamped in the shaft sleeve, and a hexagonal groove is provided at the end of the worm.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] When the door is released, the bearing rolls along the surface of the arc under the action of the gravity of the door and the elastic force of the elastic part. When the bearing moves to the lowest point of the V-shaped structure of the arc, the door mounting frame is reset and the door is just closed, which can achieve the effect of free closing. For scenes where frequent entry and exit of the cold storage is required, the staff only needs to open the cold storage door and leave without closing the door, which improves work efficiency. The reset mechanism closes the cold storage door in place to avoid gaps with the door opening, reduce cold air loss, save energy, and reduce heat exchange between the cold storage and the outside world, which is beneficial to the preservation of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the three-dimensional structure of the reset mechanism in an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the cutaway structure of the door mounting frame in an embodiment of the present invention;

[0023] Figure 3 Schematic diagram of the three-dimensional structure of the worm gear connection in an embodiment of the present invention;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the heating tank in an embodiment of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the position relationship of the lower support in an embodiment of the present invention;

[0026] Figure 6 A schematic diagram of the three-dimensional structure of a sealing strip in an embodiment of the present invention;

[0027] Figure 7 is a cross-sectional view of a door mounting frame in an embodiment of the present invention;

[0028] Figure 8 It is a three-dimensional diagram of the pin in the embodiment of the present invention.

[0029] In the figure: 100, door mounting frame; 101, sealing strip; 110, upper support; 120, lower support; 121, pin; 122, screw; 130, worm gear; 140, worm; 150, bushing; 300, reset mechanism; 310, upper fixing frame; 311, plug; 312, heating tank; 313, terminal; 320, lower fixing frame; 321, bearing; 322, arc surface; 330, elastic member. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments.

[0031] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0032] In the examples, unless otherwise specified, all the means used are conventional means in the art.

[0033] See also Figure 1-Figure 8 The present application provides a cold storage door with a reset structure, including a door mounting frame 100 and a reset mechanism 300. The door mounting frame 100 is driven to reset by the reset mechanism 300, so that the door connected to the door mounting frame 100 is tightly closed;

[0034] The upper end of the door mounting frame 100 is connected to an upper support column 110, and the lower end of the door mounting frame 100 is fixedly mounted with a lower support column 120, and the upper support column 110 and the lower support column 120 are coaxially arranged;

[0035] The reset mechanism 300 includes an upper fixing frame 310 and a lower fixing frame 320. The upper end of the upper support 110 is movably inserted into the rotating hole opened in the upper fixing frame 310. An elastic member 330 for pushing the door body mounting frame 100 to reset is arranged between the door body mounting frame 100 and the upper fixing frame 310. The lower support 120 is rotatably connected with the lower fixing frame 320. An arc surface 322 is opened on the upper end surface of the lower fixing frame 320. The arc surface 322 is a V-shaped structure with high ends and low middle. A bearing 321 is rotatably installed on the side wall of the lower end of the lower support 120. The bearing 321 is in rolling contact with the surface of the arc surface 322.

[0036] The cold storage door is fixedly installed on one side of the door body mounting frame 100. When the door body is opened, the cold storage door is pushed to drive the door body mounting frame 100 to rotate around the fixing frame. The rotation of the door body mounting frame 100 drives the lower support 120 structure fixedly installed at the lower end, and drives the bearing 321 installed on the lower end side wall of the lower support 120 to roll on the surface of the arc surface 322. Since the upper end surface of the lower fixing frame 320 is provided with an arc surface 322 with a V-shaped structure with high ends and low middle, the bearing 321 will roll along the lowest point of the groove of the arc surface 322 to the high point on one side, thereby lifting the door body upward for a distance. At this time, the elastic member 330 at the upper end undergoes elastic deformation. When the door body is released, When the door is opened, under the action of the gravity of the door and the elastic force of the elastic member 330, the bearing 321 rolls along the surface of the arc surface 322. When the bearing 321 moves to the lowest point of the V-shaped structure of the arc surface 322, the door mounting frame 100 is reset, and the door is just closed, which can achieve the effect of free closing. For scenes where frequent entry and exit of the cold storage is required, the staff only needs to open the cold storage door and leave, and there is no need to close the door, which improves work efficiency. The reset mechanism 300 closes the cold storage door in place to avoid gaps with the door opening, reduce the loss of cold air, save energy, and reduce the heat exchange between the cold storage and the outside world, which is beneficial to the preservation of materials.

[0037] In one embodiment of the present invention, the lower fixing frame 320 is provided with an axial hole, the lower support column 120 is rotatably inserted in the axial hole, the elastic member 330 is a torsion spring, one end of the torsion spring is connected to the upper support column 110, and the other end of the torsion spring is connected to the upper fixing frame 310. The torsion spring is driven to rotate and compress through the door body mounting frame 100, and the torsion spring pushes the door body mounting frame 100 to reset when the door body mounting frame 100 is not affected by external force.

[0038] In one embodiment of the present invention, a pin shaft 121 is fixed to the lower end side wall of the lower support 120 , a bearing 321 is rotatably mounted on one end of the pin shaft 121 , a retaining spring is clamped on the surface of the pin shaft 121 , and the retaining spring is arranged on both sides of the pin shaft 121 .

[0039] In one embodiment of the present invention, a mounting hole is provided on the lower side wall of the lower support 120, and a pin shaft 121 is inserted into the mounting hole. A screw 122 is provided at one end of the mounting hole, and the screw 122 is threadedly connected to one end of the pin shaft 121. The pin shaft 121 is fixed to the lower support 120 by the screw 122, which facilitates installation and disassembly and reduces maintenance costs.

[0040] In another embodiment of the present invention, the upper end of the upper support 110 is rotatably inserted into the rotating hole opened in the upper fixing frame 310, and the elastic member 330 is arranged in the rotating hole opened in the upper fixing frame 310. The lower end of the elastic member 330 is in contact with the upper end of the upper support 110. The elastic member 330 is a compression spring. The door body mounting frame 100 rises due to the rotation, driving the upper support 110 to rise and compress the compression spring.

[0041] In one embodiment of the present invention, a plug 311 is threadedly connected to the upper end of the rotating hole opened in the upper fixing frame 310, the upper end of the elastic member 330 is in conflict with the plug 311, and a hexagonal groove is opened at the upper end of the plug 311. The lower end of the upper support 110 is fixedly connected to the door body mounting frame 100. The plug 311 is provided to facilitate disassembly and assembly, replacement and maintenance of the elastic member 330. At the same time, the plug 311 can be driven to move up and down in the rotating hole opened in the upper fixing frame 310 by rotating the plug 311, so as to adjust the degree of compression of the elastic member 330 by the plug 311.

[0042] In one embodiment of the present invention, a door mounting groove is provided on one side of the door mounting frame 100, and a card slot is provided on the other side of the door mounting frame 100. The card slot is arranged along the length direction of the door mounting frame 100, and a sealing strip 101 is card-connected in the card slot. The additional sealing strip 101 is used to seal the gap to reduce the heat exchange between the cold storage and the outside world.

[0043] In a specific embodiment of the present invention, when the cold storage is not opened for a long time, the connection of the cold storage door will freeze, making it difficult to open the cold storage door. For this reason, a heating groove 312 is provided on the side wall of the upper fixing frame 310, and a heating wire is installed in the heating groove 312. The port of the heating groove 312 is sealed by solid glue to prevent water vapor from entering the interior, thereby protecting the heating wire and extending the service life of the heating wire. A terminal 313 is fixed on the surface of the upper fixing frame 310, and an external power supply is electrically connected to the terminal 313, so that the heating wire heats the connection to prevent ice from freezing. The terminal 313 is electrically connected to the heating wire, and the lower fixing frame 320 is also provided with the same heating groove, and a heating wire is installed in the heating groove.

[0044] Since the lowest position of the V-shaped structure of the arc surface 322 is fixed, in order to facilitate the adjustment of the final stop state of the door body to be closed, the upper end of the lower support column 120 is rotatably inserted into the installation groove opened at the lower end of the door body mounting frame 100, and a worm gear 130 is fixed on the surface of the lower support column 120, and a worm 140 is rotatably installed on the door body mounting frame 100, and the worm gear 130 is meshed with the worm 140; by rotating the worm 140 to drive the worm gear 130 to rotate, the lower support column 120 is rotated by a certain angle relative to the door body mounting frame 100, so as to facilitate the control of the final stop position of the door body;

[0045] A shaft sleeve 150 is fixed in a mounting groove at the lower end of the door body mounting frame 100 , the upper end of the lower support 120 is rotatably clamped in the shaft sleeve 150 , and an inner hexagonal groove is formed at the end of the worm 140 .

[0046] The above-mentioned embodiments only express several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it should not be understood as limiting the scope of the invention patent.

[0047] It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these modifications and improvements all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A cold storage door with a reset structure, characterized in that: include A door body mounting frame (100), wherein an upper support column (110) is connected to the upper end of the door body mounting frame (100), and a lower support column (120) is fixedly mounted to the lower end of the door body mounting frame (100), and the upper support column (110) and the lower support column (120) are coaxially arranged; A reset mechanism (300), the reset mechanism (300) comprises an upper fixing frame (310) and a lower fixing frame (320), the upper end of the upper support (110) is movably inserted into a rotating hole provided in the upper fixing frame (310), an elastic member (330) for pushing the door body mounting frame (100) to reset is provided between the door body mounting frame (100) and the upper fixing frame (310), the lower support (120) is rotatably connected to the lower fixing frame (320), an arcuate surface (322) is provided on the upper end surface of the lower fixing frame (320), the arcuate surface (322) is in a V-shaped structure with high ends and low middle, a bearing (321) is rotatably installed on the lower end side wall of the lower support (120), and the bearing (321) is in rolling contact with the surface of the arcuate surface (322).

2. The cold storage door reset structure according to claim 1, characterized in that: The lower fixing frame (320) is provided with an axial hole, and the lower support (120) is rotatably inserted into the axial hole. The elastic member (330) is a torsion spring, one end of which is connected to the upper support (110), and the other end of which is connected to the upper fixing frame (310).

3. The cold storage door reset structure according to claim 1, characterized in that: A pin shaft (121) is fixed to the side wall of the lower end of the lower support (120), the bearing (321) is rotatably mounted on one end of the pin shaft (121), a retaining spring is clamped on the surface of the pin shaft (121), and the retaining spring is arranged on both sides of the pin shaft (121).

4. The cold storage door reset structure according to claim 3, characterized in that: A mounting hole is provided on the side wall at the lower end of the lower support (120), the pin shaft (121) is inserted into the mounting hole, a screw (122) is provided at one end of the mounting hole, and the screw (122) is threadedly connected to one end of the pin shaft (121).

5. The cold storage door reset structure according to claim 4, characterized in that: The upper end of the upper support (110) is rotatably inserted into a rotating hole opened in the upper fixing frame (310), and the elastic member (330) is arranged in the rotating hole opened in the upper fixing frame (310). The lower end of the elastic member (330) contacts the upper end of the upper support (110), and the elastic member (330) is a compression spring.

6. The cold storage door reset structure according to claim 5, characterized in that: The upper end of the rotating hole provided on the upper fixing frame (310) is threadedly connected with a plug (311), the upper end of the elastic member (330) is in contact with the plug (311), the upper end of the plug (311) is provided with a hexagonal groove, and the lower end of the upper support (110) is fixedly connected to the door body mounting frame (100).

7. The cold storage door reset structure according to claim 6, characterized in that: A door body mounting groove is provided on one side of the door body mounting frame (100), and a clamping groove is provided on the other side of the door body mounting frame (100). The clamping groove is arranged along the length direction of the door body mounting frame (100), and a sealing strip (101) is clamped in the clamping groove.

8. The cold storage door reset structure according to claim 7, characterized in that: A heating groove (312) is provided on the side wall of the upper fixing frame (310), a heating wire is installed in the heating groove (312), the port of the heating groove (312) is sealed by solid glue, and a wiring terminal (313) is fixed on the surface of the upper fixing frame (310), and the wiring terminal (313) is electrically connected to the heating wire.

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