Roller shutter door

Abstract

The utility model provides a roller shutter door. The roller shutter door comprises a door frame, a rolling shaft, a door curtain, a driving system and a stroke detection assembly. The door frame comprises two stand columns arranged at intervals, the rolling shaft is arranged at the top ends of the two stand columns, the door curtain is connected to the rolling shaft, and the driving system is connected with the rolling shaft and can drive the rolling shaft to rotate. Vertical rails are arranged in the stand columns, guide sliding blocks are arranged in the vertical rails, a guide rod is arranged on the door curtain, and the two ends of the guide rod are connected with the guide sliding blocks arranged in the two stand columns respectively. The stroke detection assembly comprises a proximity switch and a detected piece, the proximity switch is arranged on the stand column, the detected piece is arranged on the guide sliding block, and the proximity switch can sense the position of the detected piece and can send an instruction to the driving system.

Description

Technical Field

[0001] The present application belongs to the technical field of industrial doors, and in particular relates to a rolling door. Background Art

[0002] Rolling shutter doors are installed in cold storage facilities, freezer rooms, and other refrigerated environments to insulate and seal the interior. Their primary function is to maintain a low temperature within the cold storage, preventing the temperature from rising, thereby ensuring that items stored within the cold storage remain at a constant low temperature.

[0003] During operation, the curtain's travel is controlled by the motor's encoder, which counts the number of motor revolutions to determine the curtain's resting position. When a curtain freezes solid at low temperatures, its physical form changes, becoming more rigid and less flexible. This change directly affects the curtain's size and shape when rolled up and unrolled. Due to its increased stiffness, a frozen curtain may occupy a larger space or curl differently when rolled up than when unfrozen. This dimensional discrepancy can cause the encoder reading to deviate from the curtain's actual position, resulting in incomplete opening or closing of the rolling door. Utility Model Content

[0004] The present application provides a rolling door, comprising a door frame, a roller, a door curtain, a drive system, and a travel detection assembly; the door frame comprises two spaced-apart columns, the roller is disposed at the top ends of the two columns, the door curtain is connected to the roller, and the drive system is connected to the roller and can drive the roller to rotate;

[0005] A vertical track is provided in the column, a guide slider is provided in the vertical track, a guide rod is provided on the door curtain, and both ends of the guide rod are respectively connected to the guide sliders provided in the two columns;

[0006] The stroke detection assembly includes a proximity switch and a detected part. The proximity switch is arranged on the column, and the detected part is arranged on the guide slider. The proximity switch can sense the position of the detected part and send instructions to the drive system.

[0007] With the door curtain of the present invention, when the door curtain moves to a designated position, the detected element is identified by a proximity switch (which can use inductive, capacitive, Hall-effect, photoelectric, etc.). The proximity switch then sends a command to the drive system, causing it to stop, thereby ensuring that the door curtain moves to the designated position. This solves the problem of discrepancies between the encoder reading and the actual position of the door curtain, ensuring that the rolling door fully opens when opening and completely closes when closing.

[0008] In one possible implementation manner, in the rolling shutter door provided in the embodiment of the present application, the number of the proximity switches is four, and the four proximity switches are respectively located at the top and bottom of the two columns.

[0009] In one possible implementation manner, in the rolling door provided in an embodiment of the present application, the guide rod is arranged at the bottom of the door curtain.

[0010] In one possible implementation manner, in the rolling door provided in the embodiment of the present application, the guide rod is a counterweight rod of the door curtain.

[0011] In one possible implementation manner, the rolling shutter door provided in the embodiment of the present application has protrusions at both ends of the guide rod, and a groove is provided on the guide slider, and the protrusions of the guide rod are inserted into and connected to the grooves of the guide slider.

[0012] In one possible implementation manner, in the rolling shutter door provided in the embodiment of the present application, the guide slider is an ultra-high molecular polyethylene wear-resistant slider. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0014] Figure 1 This is a schematic structural diagram of a rolling door provided in an embodiment of the present application;

[0015] Figure 2 is a cross-sectional schematic diagram of a rolling shutter door provided in an embodiment of the present application;

[0016] Figure 3 yes Figure 2 A magnified schematic diagram of point A in the middle;

[0017] Figure 4 This is a partial structural diagram of a rolling shutter door provided in an embodiment of the present application;

[0018] Figure 5 yes Figure 4 Explosion diagram of the structure;

[0019] Figure 6 This is a schematic diagram of the column of the rolling shutter door provided in an embodiment of the present application.

[0020] 10-door frame;

[0021] 11- pillar;

[0022] 20-Scroll;

[0023] 30-door curtain;

[0024] 40-Proximity switch;

[0025] 50-vertical track;

[0026] 60-guide slider;

[0027] 61-groove;

[0028] 70-guide rod;

[0029] 71-convex column. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0031] Figure 1 This is a schematic structural diagram of a rolling door provided in an embodiment of the present application; Figure 2 is a cross-sectional schematic diagram of a rolling shutter door provided in an embodiment of the present application; Figure 3 yes Figure 2 A magnified schematic diagram of point A in the middle; Figure 4 This is a partial structural diagram of a rolling shutter door provided in an embodiment of the present application; Figure 5 yes Figure 4 Explosion diagram of the structure; Figure 6 This is a schematic diagram of the column of the rolling shutter door provided in an embodiment of the present application.

[0032] See also Figures 1 to 6 As shown, an embodiment of the present application provides a rolling door, including a door frame 10, a roller 20, a door curtain 30, a drive system and a travel detection component, wherein:

[0033] The door frame 10 includes two spaced-apart columns 11. A reel 20 is mounted at the top of each column 11. A door curtain 30 is connected to the reel 20. A drive system is connected to the reel 20 and drives its rotation. The drive system controls the winding and unwinding of the door curtain 30, thereby opening and closing the door. The drive system primarily comprises a motor, which can be either an external motor or a tubular motor mounted within the reel 20. The motor provides power, and the reel 20 converts the motor's rotation into the upward and downward movement of the door curtain 30.

[0034] A vertical track 50 is installed within the column 11, which houses a guide slider 60 made of wear-resistant ultra-high molecular weight polyethylene. A guide rod 70 is mounted on the door curtain 30, with its ends connected to the guide sliders 60 located within the two columns 11. The vertical track 50 and guide sliders 60 restrict the guide rod 70 to vertical movement, effectively preventing the door curtain 30 from wandering.

[0035] The travel detection assembly includes a proximity switch 40 and a detected object. The proximity switch 40 is mounted on the column 11, and the detected object (not shown) is mounted on the guide slider 60. The proximity switch 40 senses the position of the detected object and sends instructions to the drive system. When the curtain 30 reaches the designated position, the detected object is recognized by the proximity switch 40 (using various detection methods, such as inductive, capacitive, Hall effect, or photoelectric). The proximity switch 40 then sends a command to the drive system, halting it and ensuring that the curtain 30 reaches the designated position. This eliminates the problem of discrepancies between the encoder reading and the actual position of the curtain 30, ensuring that the rolling door fully opens when opening and completely closes when closing.

[0036] Specifically, there are four proximity switches 40, located at the top and bottom of the two columns 11. The proximity switches 40 located at the top of the columns 11 control the opening of the rolling door, while the proximity switches 40 located at the bottom of the columns 11 control the closing of the rolling door. A guide rod 70 is provided at the bottom of the door curtain 30 and serves as a counterweight for the door curtain 30. By adding weight to the lower portion of the door curtain 30, the counterweight helps the door curtain 30 maintain balance and stability during opening and closing, reducing the burden on the motor and improving the operating efficiency and smoothness of the door curtain 30.

[0037] Both ends of the guide rod 70 have protrusions 71 , and the guide slider 60 has a groove 61 . The protrusions 71 of the guide rod 70 are inserted into and connected to the groove 61 of the guide slider 60 .

[0038] In the description of the embodiments of the present application, it should be understood that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. The orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In the description of this application, the meaning of "multiple" is two or more, unless otherwise precisely and specifically specified.

[0039] The terms "first," "second," "third," "fourth," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential sequence. It should be understood that the numbers used in this manner are interchangeable where appropriate, so that the embodiments of the application described herein can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions, for example, a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or that are inherent to these processes, methods, products, or apparatus.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A rolling door, characterized in that: The door frame comprises a door frame, a reel, a door curtain, a drive system and a travel detection component; the door frame comprises two columns spaced apart, the reel is arranged at the top ends of the two columns, the door curtain is connected to the reel, and the drive system is connected to the reel and can drive the reel to rotate; A vertical track is provided in the column, a guide slider is provided in the vertical track, a guide rod is provided on the door curtain, and both ends of the guide rod are respectively connected to the guide sliders provided in the two columns; The stroke detection assembly includes a proximity switch and a detected part. The proximity switch is arranged on the column, and the detected part is arranged on the guide slider. The proximity switch can sense the position of the detected part and send instructions to the drive system.

2. The rolling door according to claim 1, characterized in that: There are four proximity switches, which are respectively located at the top and bottom of the two columns.

3. The rolling door according to claim 2, characterized in that: The guide rod is arranged at the bottom of the door curtain.

4. The rolling door according to claim 3, characterized in that: The guide rod is a counterweight rod of the door curtain.

5. The rolling door according to claim 1, characterized in that: Both ends of the guide rod are provided with convex columns, and the guide slider is provided with a groove, and the convex columns of the guide rod are inserted into and connected to the groove of the guide slider.

6. The rolling door according to claim 1, characterized in that: The guide slider is an ultra-high molecular polyethylene wear-resistant slider.

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