Door frame mechanism of cold storage

Abstract

The invention discloses a door frame mechanism for a cold storage, which relates to the field of cold storage door frames and solves the problem that when the door frame mechanism of the existing cold storage is used, the staff will keep the cold storage door in an open state when taking articles in the cold storage, thereby forming a temperature difference at the connection between the door frame and the cold storage door, which easily causes the connection part to melt first and then agglomerate, resulting in a mismatch between the connection between the door frame and the cold storage door in the long run, resulting in a gap and an inability to be completely closed. The invention comprises two groups of vertical frames respectively arranged on both sides of the cold storage opening, the tops of the two groups of vertical frames are provided with matching horizontal frames, the two groups of vertical frames and the horizontal frames are internally connected to each other, and a sliding door matching the vertical frame and the horizontal frame is arranged on the outside of the cold storage opening. The invention releases the clamping of the sealing block by arranging a clamping component, which is convenient for the subsequent mobile component to operate, and after the sliding door moves to the cold storage opening, the sealing block is clamped again, thereby improving the service life.

Description

Technical Field

[0001] The invention relates to the technical field of door frame mechanisms of cold storages, in particular to a door frame mechanism of cold storages. Background Art

[0002] Cold storage is a kind of refrigeration equipment. Cold storage refers to the use of artificial means to create an environment with different temperature or humidity from the outdoor environment. It is also a constant temperature and humidity storage equipment for food, liquid, chemicals, medicines, vaccines, scientific experiments and other items. Cold storage is usually located near the transportation port or place of origin. Compared with refrigerators, cold storage has a larger refrigeration area and a common refrigeration principle. Generally, cold storage is cooled by a refrigerator, using a liquid with a very low vaporization temperature (ammonia or Freon) as a coolant, which evaporates under low pressure and mechanical control conditions to absorb heat in the storage, thereby achieving the purpose of cooling.

[0003] At present, before the cold storage is officially put into use, a cold storage door of the same specifications will be customized. The cold storage door is a special door installed at the entrance of the cold storage to isolate the indoor and outdoor temperatures and maintain a low temperature environment inside the cold storage. It is usually made of thermal insulation materials and is equipped with sealing strips and special structural designs to reduce the exchange of hot and cold air. The types of cold storage doors include sliding doors, sliding doors and revolving doors. The sliding cold storage door includes a door frame and slide rails installed on the outside of the cold storage entrance, as well as a matching sliding door. However, in daily use, when the staff takes items in the cold storage, they will keep the cold storage door open, which will cause a temperature difference at the connection between the door frame and the cold storage door, which may easily cause the connection part to melt first and then agglomerate. In the long run, the connection between the door frame and the cold storage door may become incompatible, resulting in gaps and inability to close completely. Summary of the invention

[0004] The object of the present invention is to provide a door frame mechanism for a cold storage 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 door frame mechanism of a cold storage, comprising two groups of vertical frames respectively arranged on both sides of the cold storage opening, the tops of the two groups of vertical frames are provided with matching horizontal frames, the two groups of vertical frames and the horizontal frames are internally connected to each other, a sliding door matching the vertical frames and the horizontal frames is arranged on the outside of the cold storage opening, and a storage groove is provided on the side of the sliding door close to the vertical frames; it also includes a clamping assembly, which is arranged in the two groups of vertical frames and connected to the horizontal frames, and comprises two groups of vertical plates respectively arranged in the two groups of vertical frames and slidably connected thereto, a horizontal plate slidably connected to the horizontal frame is arranged above the two groups of vertical plates, and the clamping assembly is used to control the vertical plates and the horizontal frames when operating the sliding door switch. The horizontal plates slide in cooperation with the vertical frames and the horizontal frames respectively, slide inwards at the same time when opening the door, and clamp the sliding door part after closing the door; a moving component is arranged on the sliding door and connected to the two groups of vertical frames, for fixing the door body when the sliding door is opened and closed, and cooperating with the two groups of vertical plates and the horizontal plates to improve the sealing of the cold storage, solving the problem that when the door frame mechanism of the existing cold storage is used, the staff will keep the cold storage door open when taking items in the cold storage, thereby forming a temperature difference at the connection between the door frame and the cold storage door, which easily causes the connection part to melt first and then agglomerate. In the long run, it leads to the problem that the connection between the door frame and the cold storage door is not compatible, a gap is generated, and it cannot be completely closed.

[0006] The clamping assembly includes two groups of sliding shafts respectively arranged inside the two groups of vertical frames and fixedly connected to the vertical plates, the sliding shaft sleeves are provided with bending tubes, the outside of the bending tubes is fixedly connected with a stabilizing block fixedly connected to the inner wall of the vertical frame, the end of the bending tube away from the sliding shaft is fixedly connected with a connecting tube, and the connecting tube is connected with a pneumatic mechanism connected to the inside of the horizontal frame. When the sliding door is opened, the sealing block is first released to facilitate the operation of the subsequent moving assembly, and when the sliding door needs to be closed, the sealing block is clamped again until the sliding door moves to the cold storage opening.

[0007] The pneumatic mechanism includes an air cylinder arranged on the connecting pipe and connected thereto, the outside of the air cylinder is fixedly connected to a support block fixedly connected to the inside of the horizontal frame, the inside of the air cylinder is slidably connected to a piston block, and two groups of electric telescopic rods are fixedly connected to the top end of the inside of the horizontal frame, the two groups of electric telescopic rods are arranged in a mirror image, and the two groups of electric telescopic rods are respectively provided with piston rods fixedly connected to the two groups of piston blocks, which is conducive to providing power for the movement of the vertical plate.

[0008] A telescopic shaft fixedly connected to the cross frame is provided at the top end thereof, the other end of the telescopic shaft is fixedly connected to the cross plate, and a first spring is sleeved on the outside of the telescopic shaft, bending plates are fixedly connected at both ends of the cross plate, a lifting block is fixedly connected under the bending plate, pushing blocks are fixedly connected to the two sets of vertical plates, and inclined surfaces matching each other are provided on the lifting block and the pushing block.

[0009] The moving component includes a sealing plate arranged in the storage groove and slidably connected to the sliding door, a cross plate is fixedly connected to a side of the sealing plate close to the storage groove, a pulling shaft slidably connected to the sliding door is fixedly connected to the center of the cross plate, and a plurality of groups of second springs fixedly connected to the sliding door are fixedly connected to the cross plate, and one end of the pulling shaft located outside the sliding door is connected to a plug-in mechanism connected to the vertical frame. When the moving component is in operation, it cooperates to protect the sealing block and can fix the sliding door after it is opened.

[0010] Preferably, the plug-in mechanism includes a pulling plate arranged on the outside of the sliding door and fixedly connected to the pulling shaft, a handle is fixedly connected to the pulling plate, and plug-in rods are fixedly connected to both ends of the pulling plate, and plug-in blocks adapted to the plug-in rods are fixedly connected to the outsides of the two groups of vertical frames.

[0011] Preferably, the top of the horizontal frame is fixedly connected to a limit strip, and a long slide rail compatible with the limit strip is provided at the top of the horizontal frame, a short slide rail fixedly connected to the vertical frame is provided below the long slide rail, and pulley frames connected to the sliding door are provided on both the long slide rail and the short slide rail.

[0012] Preferably, a fixing block is fixedly connected to the vertical frame, and a sliding groove matched with the vertical board is provided on the fixing block, which is beneficial for the vertical board to slide through the cooperation of the sliding groove, thereby making the movement more stable.

[0013] Preferably, the outer cover of the handle is provided with a rubber cover, which is conducive to the staff to operate the handle more conveniently. At the same time, the setting of the rubber material improves safety.

[0014] Preferably, one end of the plug-in rod close to the plug-in block is set to be hemispherical, which is conducive to the plug-in rod being stably inserted into the plug-in block when the sliding door is opened and closed.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention provides a door frame mechanism for a cold storage, which solves the problem that in the existing door frame mechanism of the cold storage, when the staff takes articles in the cold storage, the cold storage door is kept open, thereby forming a temperature difference at the connection between the door frame and the cold storage door, which easily causes the connection part to melt first and then agglomerate. In the long run, it leads to the connection between the door frame and the cold storage door being incompatible, generating a gap, and being unable to be completely closed. By setting a clamping component, when the sliding door is opened, the sealing block is first released to facilitate the subsequent operation of the moving component, and when the sliding door needs to be closed, the sealing block is clamped again after the sliding door is moved to the cold storage opening, and the moving component cooperates to protect the sealing block during operation, and at the same time, the sliding door can be fixed after opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the sliding door of the present invention in an open state;

[0019] Figure 3 It is a schematic diagram of the internal structure of the vertical frame and the horizontal frame of the present invention;

[0020] Figure 4 for Figure 3 A magnified image of area A;

[0021] Figure 5 for Figure 3 Enlarged view of area B;

[0022] Figure 6 This is a schematic diagram of the structure coordination of the clamping assembly of the present invention;

[0023] Figure 7 This is a schematic diagram of the rear structure of the sealing block of the present invention;

[0024] Figure 8 This is a schematic diagram of the cooperation between the sliding door and the sealing block structure of the present invention.

[0025] In the figure: 1. vertical frame; 2. horizontal frame; 3. sliding door; 4. storage slot; 5. vertical board; 6. horizontal board; 7. sliding shaft; 8. bending tube; 9. stabilizing block; 10. connecting pipe; 11. pneumatic mechanism; 12. air storage cylinder; 13. supporting block; 14. piston block; 15. electric telescopic rod; 16. piston rod; 17. telescopic shaft; 18. first spring; 19. bending plate; 20. lifting block; 21. pushing block; 22. sealing plate; 23. cross plate; 24. pulling shaft; 25. second spring; 26. plug-in mechanism; 27. pulling plate; 28. handle; 29. ​​plug-in rod; 30. plug-in block; 31. limit strip; 32. long slide rail; 33. short slide rail; 34. pulley frame; 35. fixing block; 36. sliding slot. DETAILED DESCRIPTION

[0026] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0027] Embodiment 1

[0028] See also Figure 1-Figure 8 The door frame mechanism of a cold storage shown in the figure comprises two sets of vertical frames 1 respectively arranged on both sides of the cold storage opening, the tops of the two sets of vertical frames 1 are provided with matching horizontal frames 2, the two sets of vertical frames 1 and the horizontal frames 2 are internally connected to each other, a sliding door 3 matching the vertical frames 1 and the horizontal frames 2 is arranged outside the cold storage opening, and a storage groove 4 is opened on the side of the sliding door 3 close to the vertical frame 1; and further comprises: a clamping assembly, which is arranged in the two sets of vertical frames 1 and connected to the horizontal frame 2, and comprises two sets of vertical frames 1 respectively arranged in the two sets of vertical frames 1 and connected to the horizontal frame 2 in a sliding manner. Vertical plates 5, horizontal plates 6 slidably connected to the horizontal frames 2 are arranged above the two groups of vertical plates 5. The clamping assembly is used to control the vertical plates 5 and the horizontal plates 6 to slide in coordination in the vertical frames 1 and the horizontal frames 2 respectively when operating the sliding door 3 to open and close. When opening the door, they slide inward at the same time, and clamp the sliding door 3 partly after closing the door; a moving assembly, the moving assembly is arranged on the sliding door 3 and connected to the two groups of vertical frames 1, and is used to fix the door body when the sliding door 3 is opened and closed, and cooperates with the two groups of vertical plates 5 and the horizontal plates 6 to improve the sealing of the cold storage.

[0029] See also Figure 3-Figure 6The clamping assembly shown in the figure includes two groups of sliding shafts 7 which are respectively arranged inside the two groups of vertical frames 1 and fixedly connected to the vertical plates 5. The sliding shaft 7 is sleeved with a bending tube 8. The bending tube 8 is fixedly connected to a stabilizing block 9 fixedly connected to the inner wall of the vertical frame 1. The end of the bending tube 8 away from the sliding shaft 7 is fixedly connected to a connecting tube 10. The connecting tube 10 is connected to a pneumatic mechanism 11 connected to the inside of the horizontal frame 2. The pneumatic mechanism 11 includes an air storage cylinder 12 which is arranged on the connecting tube 10 and communicated with the connecting tube 10. The air storage cylinder 12 is fixedly connected to a supporting block 13 fixedly connected to the inside of the horizontal frame 2. The air storage cylinder 12 is slidably connected to a piston block 14. Two groups of electric telescopic rods 15 are fixedly connected to the top of the inside of the horizontal frame 2. Both groups of electric telescopic rods 15 are electrically controlled. The two groups of electric telescopic rods 15 are arranged in a mirror image, and the two groups of electric telescopic rods 15 are respectively provided with piston rods 16 fixedly connected to the two groups of piston blocks 14. A telescopic shaft 17 fixedly connected to the top of the inner part of the horizontal frame 2 is provided, and the other end of the telescopic shaft 17 is fixedly connected to the horizontal plate 6, and a first spring 18 is sleeved on the outside of the telescopic shaft 17. Bending plates 19 are fixedly connected to both ends of the horizontal plate 6, and a lifting block 20 is fixedly connected below the bending plate 19. Pushing blocks 21 are fixedly connected to the two groups of vertical plates 5, and the lifting blocks 20 and the pushing blocks 21 are provided with mutually compatible inclined surfaces. Among them, in order to make the vertical plate 5 more stable when sliding, a fixed block 35 is fixedly connected to the vertical frame 1, and a sliding groove 36 compatible with the vertical plate 5 is provided on the fixed block 35.

[0030] In the present embodiment, during the daily use of the cold storage, when the staff needs to take items in the cold storage, firstly, the two sets of electric telescopic rods 15 are controlled to operate in the horizontal frame 2, and the electric telescopic rod 15 retracts the piston rod 16 inward at this time, and the piston rod 16 drives the piston block 14 to move, and the piston block 14 moves outward in the air storage cylinder 12 at this time. Since the air storage cylinder 12, the connecting pipe 10 and the bending pipe 8 are all in a state of interconnection, the air storage cylinder 12 extracts the air in the bending pipe 8 through the connecting pipe 10 at this time, and the sliding shaft 7 at the bottom end of the bending pipe 8 moves into the bending pipe 8. At this time, the sliding shaft 7 drives the fixedly connected vertical plate 5 to move into the vertical frame 1, and the bottom end of the vertical plate 5 slides in cooperation on the fixed block 35 through the sliding groove 36;

[0031] At this time, the two sets of vertical boards 5 slide inward in the two sets of vertical frames 1 respectively, and move in opposite directions. The pushing block 21 set at the top of the vertical board 5 moves along with it. Since the lifting block 20 and the pushing block 21 are provided with mutually adapted inclined surfaces, when the pushing block 21 moves, it slides with the lifting block 20 through the inclined surfaces, and in the process of sliding between the inclined surfaces, the lifting block 20 is lifted upward, gradually forming a Figure 6In the state shown, both sets of lifting blocks 20 are lifted, and the two sets of lifting blocks 20 cooperate to drive the horizontal plate 6 to move upward, and squeeze the first spring 18 during the rising process. At the same time, the telescopic shaft 17 between the horizontal frame 2 and the horizontal plate 6 cooperates and contracts, and the two sets of vertical plates 5 and the horizontal plate 6 move toward the side wall of the sliding door 3, so as to facilitate the operation of the subsequent moving components.

[0032] Embodiment 2

[0033] See also Figure 1-Figure 2 as well as Figure 7-Figure 8 The present embodiment further illustrates the first embodiment. The moving assembly shown in the figure includes a sealing plate 22 disposed in the storage groove 4 and slidably connected to the sliding door 3. A cross plate 23 is fixedly connected to the side of the sealing plate 22 close to the storage groove 4. A pulling shaft 24 slidably connected to the sliding door 3 is fixedly connected to the center of the cross plate 23. A plurality of groups of second springs 25 fixedly connected to the sliding door 3 are fixedly connected to the cross plate 23. One end of the pulling shaft 24 located outside the sliding door 3 is connected to a plug-in mechanism 26 connected to the vertical frame 1. The mechanism 26 includes a pulling plate 27 arranged on the outside of the sliding door 3 and fixedly connected to the pulling shaft 24, a handle 28 is fixedly connected to the pulling plate 27, and plug-in rods 29 are fixedly connected at both ends of the pulling plate 27, and plug-in blocks 30 adapted to the plug-in rods 29 are fixedly connected to the outside of the two sets of vertical frames 1. In order to make it more convenient for the staff to operate the handle 28, a rubber sleeve is provided on the outside of the handle 28. In addition, in order to facilitate the insertion of the plug-in rod 29 into the plug-in block 30, the end of the plug-in rod 29 close to the plug-in block 30 is set to be hemispherical.

[0034] In this embodiment, the two sets of vertical plates 5 and horizontal plates 6 are initially in contact with the sealing plate 22 to clamp the sealing plate 22. When the two sets of vertical plates 5 and horizontal plates 6 are moved into the vertical frame 1 and the horizontal frame 2 respectively, the sealing plate 22 is disengaged from the clamping. The staff member holds the handle 28 and pulls it. The handle 28 then drives the pulling plate 27 to move, and the plug-in rods 29 at both ends of the pulling plate 27 move, and at the same time move from the plug-in block 30 to the outside until the plug-in rods 29 is disconnected from the plug-in block 30, and the pulling shaft 24 fixedly connected to the pulling plate 27 cooperates to move, and drives the sealing plate 22 to move into the storage groove 4. When the sealing plate 22 moves into the interior of the sliding door 3, the cross plate 23 squeezes the multiple sets of second springs 25 until the sealing plate 22 moves into the storage groove 4, and then the handle 28 is pushed, and the sliding door 3 is pushed through the connection between the pulling plate 27 and the pulling shaft 24, so as to open the cold storage port, and the whole is Figure 2 Status shown.

[0035] Embodiment 3

[0036] See also Figure 1-Figure 2 The present embodiment further illustrates the first embodiment. The top of the horizontal frame 2 in the figure is fixedly connected to the limit strip 31, and the top of the horizontal frame 2 is provided with a long slide rail 32 adapted to the limit strip 31, and a short slide rail 33 fixedly connected to the vertical frame 1 is provided below the long slide rail 32, and a pulley frame 34 connected to the sliding door 3 is provided on both the long slide rail 32 and the short slide rail 33.

[0037] In this embodiment, during installation, first install the two sets of vertical frames 1 on both sides of the cold storage opening, then install the horizontal frame 2 at the top between the two sets of vertical frames 1, and at the same time, the long slide rail 32 is slidably installed to the top of the horizontal frame 2 through the limit bar 31, and the short slide rail 33 is installed to the outside of the vertical frame 1, and then move the sliding door 3 to a state of fitting the horizontal frame 2 and the vertical frame 1. At this time, the two sets of wheel slide frames at the top of the sliding door 3 are located on the long slide rail 32, and the wheel slide frames on the side of the vertical frame 1 are located on the short slide rail 33. When the sliding door 3 is pushed, the wheel slide frames slide in coordination on the long slide rail 32 and the short slide rail 33 respectively.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A door frame mechanism for a cold storage, characterized in that: include: Two groups of vertical frames (1) are respectively arranged on both sides of the cold storage opening, and matching horizontal frames (2) are arranged at the tops of the two groups of vertical frames (1). The two groups of vertical frames (1) and the horizontal frames (2) are internally connected to each other, and a sliding door (3) matching the vertical frames (1) and the horizontal frames (2) is arranged outside the cold storage opening; Also includes: A clamping assembly, wherein the clamping assembly is arranged in the two groups of vertical frames (1) and connected to the horizontal frame (2), and comprises two groups of vertical plates (5) respectively arranged in the two groups of vertical frames (1) and slidably connected thereto, and a horizontal plate (6) slidably connected to the horizontal frame (2) is arranged above the two groups of vertical plates (5). The clamping assembly is used to control the vertical plates (5) and the horizontal plates (6) to slide in cooperation in the vertical frames (1) and the horizontal frames (2) respectively when operating the opening and closing of the sliding door (3), so that the vertical plates (5) and the horizontal plates (6) slide inwards at the same time when opening the door, and clamp the sliding door (3) partially after closing the door; A movable assembly, the movable assembly being arranged on the sliding door (3) and connected to the two sets of vertical frames (1), and being used to fix the door body when the sliding door (3) is opened and closed, and to cooperate with the two sets of vertical plates (5) and the horizontal plates (6) to improve the sealing performance of the cold storage; The clamping assembly comprises two groups of sliding shafts (7) respectively arranged inside the two groups of vertical frames (1) and fixedly connected to the vertical plates (5); a storage groove (4) is provided on a side of the sliding door (3) close to the vertical frame (1); a bending tube (8) is sleeved on the sliding shaft (7); a stabilizing block (9) fixedly connected to the inner wall of the vertical frame (1) is fixedly connected to the outside of the bending tube (8); a connecting tube (10) is fixedly connected to the end of the bending tube (8) away from the sliding shaft (7); the connecting tube (10) is connected to a pneumatic mechanism (1) connected to the inside of the horizontal frame (2); 1), the pneumatic mechanism (11) comprises an air storage cylinder (12) arranged on the connecting pipe (10) and connected thereto, the air storage cylinder (12) is externally fixedly connected to a support block (13) fixedly connected to the inside of the transverse frame (2), the air storage cylinder (12) is internally slidably connected to a piston block (14), and two groups of electric telescopic rods (15) are fixedly connected to the top end of the inside of the transverse frame (2), the two groups of electric telescopic rods (15) are arranged in a mirror image, and the two groups of electric telescopic rods (15) are respectively provided with piston rods (16) fixedly connected to the two groups of piston blocks (14); A telescopic shaft (17) fixedly connected to the cross frame (2) is arranged at the top end thereof, the other end of the telescopic shaft (17) is fixedly connected to the cross plate (6), and a first spring (18) is sleeved on the outside of the telescopic shaft (17), both ends of the cross plate (6) are fixedly connected to bending plates (19), a lifting block (20) is fixedly connected below the bending plate (19), and a pushing block (21) is fixedly connected to the two sets of vertical plates (5), and the lifting block (20) and the pushing block (21) are provided with mutually matching inclined surfaces; The moving assembly comprises a sealing plate (22) arranged in the storage groove (4) and slidably connected to the sliding door (3); a cross plate (23) is fixedly connected to a side of the sealing plate (22) close to the storage groove (4); a pulling shaft (24) slidably connected to the sliding door (3) is fixedly connected at the center of the cross plate (23); a plurality of groups of second springs (25) fixedly connected to the sliding door (3) are fixedly connected to the cross plate (23); and an end of the pulling shaft (24) located outside the sliding door (3) is connected to a plug-in mechanism (26) connected to the vertical frame (1).

2. A door frame mechanism for a cold storage according to claim 1, characterized in that: The plug-in mechanism (26) comprises a pulling plate (27) arranged outside the sliding door (3) and fixedly connected to the pulling shaft (24); a handle (28) is fixedly connected to the pulling plate (27); and plug-in rods (29) are fixedly connected at both ends of the pulling plate (27); and plug-in blocks (30) adapted to the plug-in rods (29) are fixedly connected to the outside of the two sets of vertical frames (1).

3. A door frame mechanism for a cold storage according to claim 2, characterized in that: The top of the transverse frame (2) is fixedly connected to a limit strip (31), and a long slide rail (32) matching the limit strip (31) is provided at the top of the transverse frame (2), a short slide rail (33) fixedly connected to the vertical frame (1) is provided below the long slide rail (32), and a pulley frame (34) connected to the sliding door (3) is provided on both the long slide rail (32) and the short slide rail (33).

4. A door frame mechanism for a cold storage according to claim 3, characterized in that: A fixed block (35) is fixedly connected to the vertical frame (1), and a sliding groove (36) matching the vertical board (5) is formed on the fixed block (35).

5. A door frame mechanism for a cold storage according to claim 4, characterized in that: The handle (28) is externally covered with a rubber sleeve.

6. A door frame mechanism for a cold storage according to claim 5, characterized in that: One end of the plug-in rod (29) close to the plug-in block (30) is configured to be hemispherical.

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