Cold storage lifting door

By designing cold storage lifting doors in cold storage doors, the motor-driven coiling mechanism is used to increase the thermal insulation doors, which solves the problem of serious wear in the roller shutter doors during the roller shutters, extends the equipment life and reduces maintenance costs.

CN222634943UActive Publication Date: 2025-03-18XUEBOTE (ANHUI) TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202420975286.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-08
Publication Date
2025-03-18
Estimated Expiration
2034-05-08

AI Technical Summary

Technical Problem

During the rolling shutter door, existing cold storage doors cause significant wear to the door surface and connectors, resulting in short door life and frequent maintenance cycles.

Method used

A cold storage lifting door is designed, using vertical frames and winding components fixed on both sides of the door frame. The rotating rod is driven by the motor to rotate, driving the winding wheel to wind the wire rope, so that the insulation door rises and reduces wear to the door body and connectors.

Benefits of technology

It effectively reduces wear and tear of thermal insulation during opening and closing, extends the service life of the equipment, reduces maintenance costs, and improves usage efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a refrigeration house lifting door which comprises a vertical frame and a furling assembly which are fixed to the two sides of a door frame. The vertical frames are fixedly connected with guide rails, and a heat insulation door is slidably connected between the two guide rails. The rotating rod is rotationally installed at the upper end of the vertical frame, the winding wheel is coaxially fixed to the surface of the rotating rod, a steel wire rope is wound around the surface of the winding wheel, and the free end of the steel wire rope is connected with the lower end of the heat insulation door; anti-falling mechanisms used for preventing falling out of control are installed at the connecting positions of the two sides of the heat insulation door and the guide rails. The motor drives the rotating rod to rotate, the rotating rod rotates to drive the winding wheel to rotate to wind the steel wire rope, and the free end of the steel wire rope pulls the heat insulation door to ascend. The heat insulation door does not need to be rolled up after rising, the shape change is small, abrasion to a heat insulation door connecting part is low, no extra space is occupied, the service life of equipment is prolonged, the maintenance cost is reduced, and the use efficiency is improved.
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Description

Technical Field

[0001] The utility model belongs to the technical field of cold storage doors, and more specifically relates to a cold storage lifting door. Background Art

[0002] In the prior art, cold storage doors are doors installed in cold storage equipment, freezer rooms and other freezing environment equipment to insulate and seal. The main function of these doors is to maintain the low temperature environment in the cold storage and prevent the temperature in the cold storage from rising, thereby ensuring that the items stored in the cold storage can maintain a constant low temperature state.

[0003] At present, cold storage sliding door is a common cold storage door, which is opened and closed by sliding, and is suitable for large cold storage. This kind of door usually uses stainless steel to make the door frame and door body to ensure the strength and durability of the door. The door body is filled with insulation materials such as polyurethane to enhance the thermal insulation performance of the door;

[0004] The above-mentioned existing technical solutions have the following defects: for cold chain logistics, since logistics vehicles need to frequently enter and exit cold storage, the existing rolling shutter doors cause great wear on the door surface and connecting parts during the rolling process, resulting in a short door life and a long maintenance cycle. Utility Model Content

[0005] In order to solve the defects existing in the above-mentioned technology, the utility model provides a cold storage lifting door, which aims to improve the problem of large wear on the door body surface and connecting parts during the rolling-up process of the rolling door.

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

[0007] A cold storage lifting door comprises a stand and a retracting assembly fixed on both sides of a door frame;

[0008] The vertical frame is fixedly connected to a guide rail, and an insulation door is slidably connected between the two guide rails; the winding assembly includes a rotating rod, a winding wheel and a motor for driving the rotating rod to rotate, the rotating rod is rotatably mounted on the upper end of the vertical frame, the winding wheel is coaxially fixed on the surface of the rotating rod, a steel wire rope is wound on the surface of the winding wheel, and the free end of the steel wire rope is connected to the lower end of the insulation door; anti-fall mechanisms for preventing uncontrolled falling are installed at the connection between the two sides of the insulation door and the guide rails.

[0009] In one embodiment of the utility model, the heat insulation door comprises

[0010] A plurality of door panels connected end to end, a hinge for connecting two adjacent door panels, and rollers fixedly mounted on the ends of the door panels;

[0011] The roller is rotatably engaged in the guide rail, and each door panel is correspondingly provided with two rollers and two hinges.

[0012] In one embodiment of the utility model, the door panel is clamped in a reserved groove between the vertical frame and the guide rail, two guide rails are provided, and the two guide rails are symmetrically arranged on both sides of the door frame, and the rollers are arranged in a one-to-one correspondence with the guide rails.

[0013] In an embodiment of the present utility model, the guide rail includes a vertical portion and a horizontal portion, and the upper end of the vertical portion is smoothly butted with the horizontal portion via an arc track.

[0014] In an embodiment of the present invention, a first sealing structure is provided at a gap between adjacent door panels, a second sealing structure is provided along the length direction of the guide rail, and the heat-insulating door is in sealing contact with the second sealing structure.

[0015] In an embodiment of the utility model, a sealing strip is fixed at the point where the lower end of the thermal insulation door contacts the ground, the first sealing structure is an accordion plate, and the second sealing structure is a sealing strip.

[0016] In an embodiment of the utility model, the motor is fixed to the upper end of the stand, the winding wheel is arranged at the upper end of the heat insulation door, two winding wheels are provided, and the two winding wheels are correspondingly arranged on both sides of the heat insulation door.

[0017] In one embodiment of the utility model, the anti-fall mechanism includes a shell fixedly connected to the heat insulation door, a rotating shaft rotatably connected to the shell, a pull rod slidably connected to the shell, and a compression spring for pushing the pull rod to slide;

[0018] The shell is detachably fixedly connected to the lower end of the heat insulation door by bolts; a brake pad is fixed to one end of the rotating shaft, and the brake pad is arranged corresponding to the inner wall of the guide rail; the sliding of the pull rod drives the rotating shaft to rotate, and the upper end of the pull rod is connected to the lower end of the wire rope; the upper end of the compression spring is fixed to the shell, and the lower end of the compression spring is fixed to the pull rod;

[0019] Compared with the prior art, the utility model has the following advantages:

[0020] (1) In the utility model, the heat insulation door is slidably connected between two guide rails; the motor drives the rotating rod to rotate, and the rotating rod drives the winding wheel to rotate to wind up the wire rope, so that the free end of the wire rope pulls the heat insulation door to rise; after the heat insulation door rises, it does not need to be wound up, the shape changes little, the wear on the connecting parts of the heat insulation door is low, and no extra space is occupied, thereby extending the service life of the equipment, reducing maintenance costs, and improving use efficiency;

[0021] (2) Anti-fall mechanisms are installed on both sides of the heat insulation door to prevent uncontrolled falling, which effectively prevents the risk of uncontrolled falling. The heat insulation door slides up and down along the guide rail without taking up extra space. The door body can be opened and closed quickly. Logistics vehicles need to frequently enter and exit the cold storage. Quick lifting doors are installed in the cold storage to adapt to the rapid opening and closing of the cold storage;

[0022] (3) The anti-fall mechanism is used to deal with situations where the motor loses control, resulting in a lack of traction on the wire rope, the thermal insulation door falls too quickly, the wire rope breaks, and the thermal insulation door is out of control; as well as situations where there are workers under the thermal insulation door; it prevents the thermal insulation door from falling and injuring workers, thereby eliminating safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the cold storage lifting door in the embodiment of the utility model;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the door panel in the embodiment of the utility model;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the anti-falling mechanism in the embodiment of the utility model;

[0026] Figure 4 It is a schematic diagram of the main structure in an embodiment of the utility model.

[0027] In the figure: 100, stand; 110, guide rail; 130, heat insulation door; 131, door panel; 133, hinge; 135, roller; 300, winding assembly; 310, rotating rod; 330, winding wheel; 331, wire rope; 350, motor; 351, emergency hand chain; 370, reset spring; 500, anti-fall mechanism; 510, housing; 511, baffle; 530, rotating shaft; 531, brake pad; 533, gear; 550, pull rod; 551, rack; 553, limit block; 570, compression spring. DETAILED DESCRIPTION

[0028] 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.

[0029] 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.

[0030] In the examples, unless otherwise specified, all the means used are conventional means in the art.

[0031] See also Figure 1-Figure 4 , the present application provides a cold storage lifting door, including a stand 100 fixed on both sides of the door frame and a retracting assembly 300;

[0032] The stand 100 is fixedly connected to a guide rail 110, and an insulation door 130 is slidably connected between the two guide rails 110; the winding assembly 300 includes a rotating rod 310, a winding wheel 330 and a motor 350 for driving the rotating rod 310 to rotate, the rotating rod 310 is rotatably installed on the upper end of the stand 100, the winding wheel 330 is coaxially fixed on the surface of the rotating rod 310, a steel wire rope 331 is wound on the surface of the winding wheel 330, and the free end of the steel wire rope 331 is connected to the lower end of the insulation door 130; anti-fall mechanisms 500 for preventing uncontrolled falling are installed at the connection between the two sides of the insulation door 130 and the guide rails 110.

[0033] In a specific embodiment of the present invention, the heat insulation door 130 includes

[0034] A plurality of door panels 131 connected end to end, a hinge 133 for connecting two adjacent door panels 131, and a roller 135 fixedly mounted at the ends of the door panels 131;

[0035] The roller 135 is rotatably engaged in the guide rail 110 , and each door panel 131 is correspondingly provided with two rollers 135 and two hinges 133 .

[0036] In a specific embodiment of the present utility model, the door panel 131 is clamped in a reserved groove between the stand 100 and the guide rail 110. Two guide rails 110 are provided, and the two guide rails 110 are symmetrically arranged on both sides of the door frame. The rollers 135 are arranged one-to-one with the guide rails 110.

[0037] In a specific embodiment of the present invention, the guide rail 110 includes a vertical portion and a horizontal portion, and the upper end of the vertical portion is smoothly connected to the horizontal portion through an arc track.

[0038] In a specific embodiment of the present invention, a first sealing structure is provided at the gap between adjacent door panels 131 , a second sealing structure is provided along the length direction of the guide rail 110 , and the heat-insulating door 130 is in sealing contact with the second sealing structure.

[0039] In a specific embodiment of the present utility model, a sealing strip is fixed at the point where the lower end of the heat insulation door 130 contacts the ground, the first sealing structure is an accordion plate, and the second sealing structure is a sealing strip.

[0040] In a specific embodiment of the utility model, the motor 350 is fixed to the upper end of the stand 100 , the winding wheel 330 is arranged at the upper end of the heat insulation door 130 , and two winding wheels 330 are arranged on both sides of the heat insulation door 130 .

[0041] In a specific embodiment of the present utility model, the anti-fall mechanism 500 includes a shell 510 fixedly connected to the heat insulation door 130, a rotating shaft 530 rotatably connected to the shell 510, a pull rod 550 slidably connected to the shell 510, and a compression spring 570 for pushing the pull rod 550 to slide;

[0042] The shell 510 is detachably fixedly connected to the lower end of the heat insulation door 130 by bolts; a brake pad 531 is fixed to one end of the rotating shaft 530, and the brake pad 531 is arranged corresponding to the inner wall of the guide rail 110; the pull rod 550 slides to drive the rotating shaft 530 to rotate, and the upper end of the pull rod 550 is connected to the lower end of the wire rope 331; the upper end of the compression spring 570 is fixed to the shell 510, and the lower end of the compression spring 570 is fixed to the pull rod 550.

[0043] In this solution, the heat insulation door 130 is slidably connected between the two guide rails 110; the motor 350 drives the rotating rod 310 to rotate, and the rotating rod 310 rotates to drive the winding wheel 330 to rotate to wind up the wire rope 331, so that the free end of the wire rope 331 pulls the heat insulation door 130 to rise; the heat insulation door 130 does not need to be wound up after rising, and the shape change is small, the wear on the connecting parts of the heat insulation door 130 is low, and no extra space is occupied, thereby extending the service life of the equipment, reducing maintenance costs, and improving use efficiency;

[0044] Anti-fall mechanisms 500 are installed on both sides of the heat insulation door 130 to prevent uncontrolled falling, which effectively prevents the risk of falling down due to uncontrolled falling. In addition, the heat insulation door 130 slides up and down along the guide rail 110, does not occupy extra space, and the door body can be opened and closed quickly. Logistics vehicles need to frequently enter and exit the cold storage, and a quick lifting door is installed in the cold storage to adapt to the rapid opening and closing of the cold storage;

[0045] The anti-fall mechanism 500 is used to deal with the situation where the motor 350 loses control, resulting in the wire rope 331 having no traction, the thermal insulation door 130 falls too fast, the wire rope 331 breaks, resulting in loss of control; and there are workers under the thermal insulation door 130; it prevents the thermal insulation door 130 from falling, avoids injuring the workers, and eliminates safety hazards.

[0046] See also Figure 3-Figure 4 In a specific embodiment of the utility model, a rack 551 is fixed to the lower end of the pull rod 550, a gear 533 is coaxially fixed to the rotating shaft 530, and the rack 551 is meshed with the gear 533; two rotating shafts 530 are provided, and the two rotating shafts 530 are symmetrically arranged;

[0047] A baffle 511 is fixed in the housing 510, and a limit block 553 is fixed at the lower end of the pull rod 550. The limit block 553 is arranged at the lower end of the baffle 511; the upper end of the limit block 553 abuts against the lower surface of the baffle 511 to limit the compression amount of the compression spring 570, and at the same time plays a supporting role to prevent the compression spring 570 from being over-compressed and losing its elastic function;

[0048] The anti-fall mechanism 500 is provided to effectively prevent the following problems during use:

[0049] The motor 350 is out of control, causing the wire rope 331 to have no traction, and the insulation door 130 falls too fast.

[0050] The wire rope 331 broke, causing loss of control;

[0051] And when there is an object below the heat insulation door 130 to prevent the heat insulation door 130 from falling.

[0052] In a specific embodiment of the utility model, a return spring 370 is sleeved on the surface of the rotating rod 310, a first end of the return spring 370 is fixedly connected to the rotating rod 310, and a second end of the return spring 370 is fixedly connected to the stand 100;

[0053] The return spring 370 is a torsion spring; a support frame fixed to the wall is rotatably mounted on the surface of the rotating rod 310, the second end of the return spring 370 is fixedly connected to the support frame, and the guide rail 110 is fixed to the wall surface by an expansion screw;

[0054] The motor 350 is transmission-connected with an emergency hand-pulled chain 351 .

[0055] In a specific embodiment of the present utility model, a controller and an alarm are also provided, wherein the electrical control output terminal of the controller is electrically connected to the motor 350 and the electrical control input terminal of the alarm, and the electrical signal input terminal of the controller is connected to a pressure sensor;

[0056] A pressure sensor is provided at the connection between the lower end of the steel wire rope 331 and the pull rod 550 to detect the real-time tension of the steel wire rope 331; a travel switch is provided at the lower end of the stand 100 to detect whether the heat insulation door 130 has fallen into place;

[0057] In a specific embodiment of the utility model, when the pressure sensor detects that the tension of the wire rope 331 is less than the preset value, it means that there is an obstacle in the falling process of the insulation door 130. At this time, the control motor 350 stops working. When the tension is zero, it means that the wire rope 331 is broken, and the control alarm sounds an alarm.

[0058] 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.

[0059] 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 lifting door, characterized in that: include A stand (100) fixed on both sides of the door frame, wherein the stand (100) is fixedly connected to a guide rail (110), and an insulating door (130) is slidably connected between two guide rails (110); A winding assembly (300), the winding assembly (300) comprising a rotating rod (310), a winding wheel (330) and a motor (350) for driving the rotating rod (310) to rotate, the rotating rod (310) being rotatably mounted on the upper end of the stand (100), the winding wheel (330) being coaxially fixed on the surface of the rotating rod (310), a steel wire rope (331) being wound around the surface of the winding wheel (330), and a free end of the steel wire rope (331) being connected to the lower end of the heat insulation door (130); Anti-falling mechanisms (500) for preventing uncontrolled falling are installed at the connection points between the two sides of the heat insulation door (130) and the guide rail (110).

2. The cold storage lifting door according to claim 1, characterized in that: The heat insulation door (130) comprises A plurality of door panels (131) connected end to end; A hinge (133) for connecting two adjacent door panels (131); A roller (135) fixedly mounted on the end of the door panel (131); The roller (135) is rollingly engaged in the guide rail (110), and each door panel (131) is correspondingly provided with two rollers (135) and two hinges (133).

3. The cold storage lifting door according to claim 2, characterized in that: The door panel (131) is clamped in a reserved groove between the stand (100) and the guide rail (110), two guide rails (110) are provided, and the two guide rails (110) are symmetrically arranged on both sides of the door frame, and the rollers (135) are arranged in a one-to-one correspondence with the guide rails (110).

4. The cold storage lifting door according to claim 1, characterized in that: The guide rail (110) comprises a vertical portion and a horizontal portion, and the upper end of the vertical portion is smoothly butted against the horizontal portion via an arc track.

5. The cold storage lifting door according to claim 2, characterized in that: A first sealing structure is provided at the gap between adjacent door panels (131), a second sealing structure is provided along the length direction of the guide rail (110), and the heat-insulating door (130) is in sealing contact with the second sealing structure.

6. The cold storage lifting door according to claim 5, characterized in that: A sealing strip is fixed at the point where the lower end of the heat-insulating door (130) contacts the ground; the first sealing structure is an accordion plate, and the second sealing structure is a sealing strip.

7. The cold storage lifting door according to claim 1, characterized in that: The motor (350) is fixed to the upper end of the stand (100), and the winding wheel (330) is arranged at the upper end of the heat insulation door (130). There are two winding wheels (330), and the two winding wheels (330) are correspondingly arranged on both sides of the heat insulation door (130).

8. The cold storage lifting door according to claim 1, characterized in that: The anti-fall mechanism (500) comprises a shell (510) fixedly connected to the heat-insulating door (130), wherein the shell (510) is detachably fixedly connected to the lower end of the heat-insulating door (130) via bolts; a rotating shaft (530) rotatably connected to the housing (510), a brake pad (531) being fixed to one end of the rotating shaft (530), and the brake pad (531) being arranged corresponding to the inner wall of the guide rail (110); A pull rod (550) slidably connected to the housing (510), wherein the pull rod (550) slides to drive the rotating shaft (530) to rotate, and the upper end of the pull rod (550) is connected to the lower end of the steel wire rope (331); A compression spring (570) is used to push the pull rod (550) to slide, wherein the upper end of the compression spring (570) is fixed to the housing (510), and the lower end of the compression spring (570) is fixed to the pull rod (550).