Irregular fire door leaf storage

By designing a fireproof door leaf storage device with parallel material troughs and linkage support devices, the problems of inconvenience and safety hazards of high-rise operation of traditional storage racks have been solved, realizing efficient and safe door leaf storage and automated adaptation, and improving production efficiency.

CN224676758UActive Publication Date: 2026-08-25HUANAN BUILDING MATERIALS (SHENZHEN) CO LTD
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Patent Information

Application Number
CN202522214387.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-10-20
Publication Date
2026-08-25
Estimated Expiration
2035-10-20

AI Technical Summary

Technical Problem

Existing fire door storage racks are stacked in multiple layers, making it inconvenient to operate at the top, posing safety hazards, and are inefficient, making it difficult to meet the storage needs of door panels of different sizes.

Method used

Design an irregular fire door leaf storage device, which adopts a parallel material trough structure and a linkage system of bottom and side support devices to achieve automatic clamping and fixing and adaptive adaptation to door leaves of different thicknesses and sizes. The storage status is detected by sensors to achieve semi-automatic process connection.

Benefits of technology

It significantly reduces operational difficulty, improves storage and retrieval efficiency, reduces safety hazards, achieves flexible adaptation to different specifications of door panels and semi-automated storage process, and improves production efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an irregular fireproof door leaf storage device, including the dolly frame, and a plurality of material grooves are arranged side by side on the dolly frame, and additionally further include linkage lever, the bottom support device is arranged to the bottom elasticity of material groove and is lifted, and the upper end side of material groove is opposite and is slidably provided with side support device, the position of material groove bottom is located both sides of bottom support device and is slidably provided with linkage block, and linkage block is slid with bottom support device and falls, and one end of linkage lever is rotatably installed in linkage block, and the other end is rotatably installed on the side support device of same side, and the middle part is rotatably installed on the dolly frame, the utility model discloses through the parallel arrangement multiple material grooves for depositing the door leaf, compared with the traditional up and down multilayer stacked storage frame, and the storage device adopts parallel material groove design, and all material grooves are at the height of being convenient for operation, and the sliding friction of bottom receiving wheel is converted into rolling friction with the receiving plate of door leaf, makes the door leaf access process smooth and laborsaving, and shortens single operation time.
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Description

Technical Field

[0001] This utility model relates to the field of civil defense equipment and tools, specifically to an irregular fire door leaf storage device. Background Technology

[0002] In the field of fire door manufacturing, with the continuous improvement of building fire safety standards, the production scale of fire doors continues to expand. As a core component, the production process of door leaves involves multiple steps, including cutting, pressing, spraying, and assembly, with certain differences in production rhythm between each step. In the traditional production model, door leaves are mostly stored by stacking on the ground or using simple supports, which not only occupies a lot of production workshop space, leading to a chaotic workshop layout, but also makes it difficult to achieve orderly management of door leaves. Therefore, there is an urgent need for specialized door leaf storage equipment.

[0003] In the prior art, utility model patent application number CN202022983366.9 discloses a special storage rack for civil defense equipment doors, including a base, a vertical support fixedly connected to the upper surface of the base, a handle fixedly connected to the front side of the vertical support, casters fixedly connected to the lower surface of the base, a first horizontal partition fixedly connected to the left side of the vertical support, and a roller bracket fixedly connected to the upper surface of the first horizontal partition. This special storage rack for civil defense equipment doors has a reasonable structure. By setting staggered horizontal supports and rollers on the vertical line of the special storage rack, it can bear more weight and hold more civil defense doors. Multiple rollers and roller brackets are set on the upper surface of the horizontal supports, making loading, unloading, and retrieval easy and quick. The vertical support is equipped with a handle, and the lower surface of the base is equipped with casters, allowing the special storage rack for civil defense equipment doors to be moved freely by gripping the handle, making it easy and quick. The overall structure is reasonable and simple.

[0004] The aforementioned patent discloses a device for storing door panels. The device features interlaced horizontal supports and rollers along the vertical line of the vertical support of the special storage rack for civil defense equipment door panels. The interlaced horizontal supports increase the overall toughness and can bear more weight. Because multiple layers are set along the vertical line of the vertical support, more civil defense door panels can be placed. However, the storage structure, by placing multiple layers, results in the upper layers being placed too high, which is not only inconvenient to retrieve, but also poses certain safety hazards for staff when retrieving them. Utility Model Content

[0005] The purpose of this utility model is to provide an irregular fireproof door leaf storage device, which aims to improve the existing storage racks that stack door leaves in multiple layers, with the upper layers placed too high. This not only makes the operation cumbersome and inefficient, but also easily leads to safety accidents such as falling and door leaf tipping, posing a dual threat to the personal safety of workers and the quality of door leaf products.

[0006] This utility model is implemented as follows: An irregular fire door leaf storage device includes a material cart frame with multiple material troughs arranged side by side on the frame, and a linkage rod. A bottom support device is elastically raised and lowered at the bottom of each material trough, and a side support device is slidably mounted on the upper side of each trough. Linkage blocks are horizontally slidably mounted on both sides of the bottom support device at the bottom of each trough, and these blocks slide horizontally as the bottom support device descends. One end of the linkage rod is rotatably mounted on the linkage block, and the other end is rotatably mounted on the side support device on the same side, with its middle portion rotatably mounted on the material cart frame.

[0007] Preferably, the bottom support device includes a bottom receiving plate, with a plurality of bottom receiving wheels arranged sequentially along its length on the upper end surface of the bottom receiving plate, and an elastic support member installed on the lower end surface, the elastic support member being disposed at the bottom of the trough.

[0008] Preferably, the elastic support is a vertical elastic compression structure, and the elastic support is provided with a sensor for detecting the compression it generates. The upper and lower ends are fixedly connected to the lower end face of the bottom support plate and the bottom of the material trough, respectively, to provide a stable elastic support force.

[0009] Preferably, a pair of side support devices includes a first end protection wheel, an infeed / outfeed sliding wheel, and a second end protection wheel; on the opposite surfaces of the pair of side support devices, starting from one end of the side opening of the trough, a first end protection wheel, an infeed / outfeed sliding wheel, and a second end protection wheel are sequentially arranged.

[0010] Preferably, the bottom support device further includes a self-locking push block; the bottom support device is provided with a self-locking push block corresponding to each linkage block, and the contact surface between the self-locking push block and the linkage block is an inclined structure.

[0011] Preferably, the material cart frame further includes omnidirectional wheels and directional wheels. One end of the bottom of the material cart frame is provided with omnidirectional wheels, and the other end is provided with directional wheels. Both the omnidirectional wheels and the directional wheels have a self-locking structure.

[0012] Preferably, it also includes a traction arm, and a traction arm is provided at one end of the material cart frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model uses multiple parallel storage troughs for storing door panels. Compared with traditional multi-layer stacked storage racks, this storage device adopts a parallel trough design, with all troughs at an easy-to-operate height. Workers can store and retrieve door panels without climbing or using auxiliary tools, greatly reducing the difficulty of operation. In addition, the bottom support rollers convert the sliding friction between the door panel and the support plate into rolling friction, and the infeed and outfeed sliding rollers of the side support device further reduce the resistance of door panel loading and unloading, making the door panel storage and retrieval process smoother and less labor-intensive, effectively shortening the single operation time.

[0014] 2. This utility model achieves automatic clamping and fixing of the door leaf through the linkage structure of the bottom support device and the side support device. When the door leaf is placed into the material slot, the bottom receiving plate is pressed down by gravity, which drives the self-locking push block to push the linkage block horizontally through the inclined surface, and then drives the side support device to move towards the center through the linkage rod until it is in close contact with both sides of the door leaf; at the same time, in response to the storage needs of irregular fire door leaves, the self-adaptive clamping structure of this storage device can flexibly adapt to door leaves of different thicknesses and sizes. There is no need to manually adjust the bracket spacing or replace the storage components according to the door leaf specifications. Simply put the door leaf into the material slot, and the linkage structure can automatically complete the clamping and positioning, breaking the limitations of traditional storage racks on door leaf specifications.

[0015] 3. This utility model can detect the storage status of the material trough in real time by using the sensor built into the elastic support. When the door is fully inserted and reaches the preset compression amount, it can link and control the material storage device to move to the work station or notify the system to prepare to receive the next door, realizing the semi-automatic connection of the storage process, reducing manual monitoring and adjustment links, and improving the overall production rhythm efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the entire utility model; Figure 2 This is a schematic diagram of the material trough structure in the material cart frame of this utility model; Figure 3 This is a top view of the overall structure of this utility model; Figure 4 This is a schematic diagram of the overall left-side structure of this utility model; Figure 5 This is a utility model Figure 2 Schematic diagram of the structure at point A; Figure 6 This is a schematic diagram of the side support device of this utility model.

[0017] In the diagram: 1. Material cart frame; 101. Material trough; 2. Bottom support device; 201. Bottom receiving plate; 202. Bottom receiving wheel; 203. Elastic support component; 204. Self-locking push block; 3. Side support device; 301. First end protection wheel; 302. Infeed / outfeed sliding wheel; 303. Second end protection wheel; 4. Linkage block; 5. Linkage rod; 6. Universal wheel; 7. Directional wheel; 8. Traction arm; 9. Linkage arm; 10. Wall hanging. Detailed Implementation

[0018] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details: Example 1 like Figure 1 , Figure 2 and Figure 3 As shown, an irregular fire door leaf storage device includes a material cart frame 1, a linkage rod 5, casters 6, directional wheels 7, a traction arm 8, a connecting arm 9, and a hanging arm 10. Multiple material troughs 101 are arranged side-by-side on the material cart frame 1. One end of the bottom of the material cart frame 1 is equipped with a caster 6, and the other end with a directional wheel 7. Both the casters 6 and directional wheels 7 have self-locking mechanisms. This combination of casters 6 and directional wheels 7 ensures stable straight-line movement on the track via sensor signals, while also facilitating flexible turning and movement in case of production abnormalities or when manual adjustments are needed. The hanging arm 10, connecting arm 9, and traction arm 8 can be connected to link multiple storage devices together for synchronous operation on the track, supporting continuous, pull-type production. When one storage device needs to operate independently, stepping on the connecting arm 9 causes the hanging arm 10 and traction arm 8 to detach, allowing the individual storage device to operate independently for individual tasks. All wheels have self-locking mechanisms to fix their position when parked. The material cart frame 1 is welded together from various square tubes and supports, ensuring overall rigidity and stability. The frame has several parallel material troughs 101, each independently used to store one door panel.

[0020] like Figure 1 , Figure 2 and Figure 6As shown, a traction arm 8 is provided at one end of the material cart frame 1; a bottom support device 2 is elastically lifted at the bottom of the material trough 101, and a side support device 3 is slidably provided on the upper side of the material trough 101; the pair of side support devices 3 includes a first end protection wheel 301, an infeed / outfeed sliding wheel 302, and a second end protection wheel 303; on the opposite surfaces of the pair of side support devices 3, starting from the end of the side opening of the material trough 101, a first end protection wheel 301, an infeed / outfeed sliding wheel 302, and a second end protection wheel 303 are sequentially provided. The first end protection wheel 301, the infeed / outfeed sliding wheel 302, and the second end protection wheel 303 are all made of soft material.

[0021] like Figure 1 , Figure 2 and Figure 5 As shown, the bottom support device 2 includes a bottom receiving plate 201, which is a horizontal plate that directly supports the weight of the door leaf. Multiple bottom receiving wheels 202 are sequentially arranged along the length of the upper surface of the bottom receiving plate 201. These wheels are multiple soft rollers, evenly installed along the length of the receiving plate. Their function is to transform the sliding friction between the door leaf and the receiving plate into rolling friction, greatly reducing the resistance when the door leaf is being fed or unfurled. Simultaneously, soft materials such as soft rubber or flow strips effectively protect the door leaf surface from scratches. An elastic support member 203 is installed on the lower surface, located at the bottom of the material trough 101. The elastic support member 203 is a vertical elastic compression structure, and a sensor for detecting compression is installed within it. The elastic support member 203 is installed below the bottom receiving plate and is typically a compression spring or elastic column. It provides an upward elastic force to the receiving plate. When a door leaf is placed into the trough, its weight compresses the elastic support, causing the entire receiving plate to descend. The upper and lower ends are fixedly connected to the lower end face of the bottom receiving plate 201 and the bottom of the trough 101, respectively, to provide stable elastic support. A sensor is integrated into the elastic support to detect the amount of compression. When the door leaf is fully inserted and the compression reaches a preset value, the sensor sends a signal to confirm that the trough has stored a door leaf, and can also control the entire storage unit to move forward one station, or notify the system to prepare to receive the next door.

[0022] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, linkage blocks 4 are horizontally slidably installed on both sides of the bottom support device 2 at the bottom of the material trough 101. The linkage blocks 4 slide horizontally as the bottom support device 2 descends. The bottom support device 2 also includes self-locking push blocks 204. The bottom support device 2 is equipped with self-locking push blocks 204 corresponding to each linkage block 4. The contact surface between the self-locking push blocks 204 and the linkage blocks 4 is a sloped structure. The self-locking push blocks 204 and the linkage blocks 4 are key components for converting vertical displacement into horizontal power. The sloped structure enables the conversion of vertical displacement into horizontal power. One end of the linkage rod 5 is rotatably mounted on the linkage block 4, and the other end is rotatably mounted on the side support device 3 on the same side. The middle part is rotatably mounted on the material cart frame 1. There are two linkage rods 5, symmetrically arranged on the left and right. The middle part is rotatably mounted on the column of the material cart frame 1 through a hinge or pin, which is the fulcrum of the lever. Thus, the side support devices 3 located on both sides of the material trough, through linkage with the bottom device, realize automatic clamping and side protection of door panels of different thicknesses. The bottom support device 2 is initially positioned at its highest point under the action of the elastic support member, while the side support devices 3 on both sides are in an open state, maximizing the width of the material trough for easy entry of the door leaf. The door leaf contacts the bottom receiving wheel and transfers its weight to the bottom receiving plate. Under the weight of the door leaf, the receiving plate overcomes the elastic force of the elastic support member and begins to move downwards. As the receiving plate descends, the self-locking push blocks 204 on both sides also descend synchronously. The inclined surface at the lower end of the push block contacts the upper end of the linkage block 4, and through the pressure of the inclined surface, forces the two linkage blocks to slide horizontally to both sides of the material trough. This, in turn, drives the side support devices 3 on both sides to move horizontally towards the center via the linkage rod 5, until the inlet / outlet sliding wheels 302 and other components are in close contact with both sides of the door leaf. At this point, the door leaf is firmly fixed by the bottom and both sides, achieving automatic self-locking. This clamping force is adaptively adjusted according to the weight of the door leaf; the greater the weight, the stronger the clamping force. When the door leaf needs to be removed, the operator pulls it outwards from the opening. Furthermore, the side support device 3 is equipped with infeed and discharge sliding wheels, which increases the clamping force of the side support device 3 on the friction of the door leaf. This friction prevents the door leaf from sliding out automatically without external force, but it does not affect the worker's ability to apply pulling force to pull the door leaf out. As the door leaf leaves, the pressure on the bottom support plate disappears, the elastic support 203 resets, and pushes the support plate upward back to its initial position.

[0023] Example 2

[0024] like Figure 1 , Figure 2 and Figure 3 As shown, an irregular fire door leaf storage device includes a material cart frame 1, a linkage rod 5, swivel wheels 6, directional wheels 7, and a traction arm 8. Multiple material troughs 101 are arranged side by side on the material cart frame 1. A swivel wheel 6 is provided at one end of the bottom of the material cart frame 1, and a directional wheel 7 is provided at the other end. Both the swivel wheel 6 and the directional wheel 7 have a self-locking structure.

[0025] like Figure 1 , Figure 2 and Figure 6 As shown, a traction arm 8 is provided at one end of the material cart frame 1; a bottom support device 2 is provided at the bottom of the material trough 101 with elastic lifting; a side support device 3 is provided on the upper side of the material trough 101 with relative sliding; a pair of side support devices 3 includes a first end protection wheel 301, an infeed / outfeed sliding wheel 302, and a second end protection wheel 303; on the opposite surfaces of the pair of side support devices 3, starting from one end of the side opening of the material trough 101, a first end protection wheel 301, an infeed / outfeed sliding wheel 302, and a second end protection wheel 303 are provided in sequence.

[0026] like Figure 1 , Figure 2 and Figure 5 As shown, the bottom support device 2 includes a bottom receiving plate 201. Multiple bottom receiving wheels 202 are sequentially arranged along the length of the upper end face of the bottom receiving plate 201, and an elastic support member 203 is installed on the lower end face. The elastic support member 203 is located at the bottom of the material trough 101. The elastic support member 203 is a vertical elastic compression structure. A sensor for detecting compression is installed in the elastic support member 203. Its upper and lower ends are fixedly connected to the lower end face of the bottom receiving plate 201 and the bottom of the material trough 101, respectively, to provide stable elastic support force.

[0027] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the bottom of the material trough 101 is horizontally slidably equipped with linkage blocks 4 on both sides of the bottom support device 2. The linkage blocks 4 slide horizontally as the bottom support device 2 descends. The bottom support device 2 also includes self-locking push blocks 204. The bottom support device 2 is equipped with self-locking push blocks 204 that correspond one-to-one with each linkage block 4. The contact surface between the self-locking push block 204 and the linkage block 4 is a sloped structure. One end of the linkage rod 5 is rotatably mounted on the linkage block 4, the other end is rotatably mounted on the side support device 3 on the same side, and the middle part is rotatably mounted on the material cart frame 1.

[0028] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An irregular fireproof door leaf storage device, comprising a material cart frame (1), wherein multiple material troughs (101) are arranged side by side on the material cart frame (1), characterized in that, In addition, it also includes a linkage rod (5); the bottom of the material trough (101) is elastically raised and lowered with a bottom support device (2), and the upper side of the material trough (101) is relatively slidably provided with a side support device (3); the bottom of the material trough (101) is horizontally slidably provided with linkage blocks (4) on both sides of the bottom support device (2), and the linkage blocks (4) slide horizontally as the bottom support device (2) descends; one end of the linkage rod (5) is rotatably mounted on the linkage block (4), the other end is rotatably mounted on the side support device (3) on the same side, and the middle part is rotatably mounted on the material cart frame (1).

2. The irregular fire door leaf storage device according to claim 1, characterized in that, The bottom support device (2) includes a bottom receiving plate (201), and a plurality of bottom receiving wheels (202) are arranged sequentially along the length direction on the upper end surface of the bottom receiving plate (201), and an elastic support member (203) is installed on the lower end surface. The elastic support member (203) is located at the bottom of the material trough (101).

3. The irregular fire door leaf storage device according to claim 2, characterized in that, The elastic support (203) is a vertical elastic compression structure. The elastic support (203) is equipped with a sensor for detecting the compression it generates. The upper and lower ends are fixedly connected to the lower end face of the bottom support plate (201) and the bottom of the material trough (101) respectively to provide a stable elastic support force.

4. The irregular fire door leaf storage device according to claim 1, characterized in that, The pair of side support devices (3) includes a first end protection wheel (301), an infeed / outfeed sliding wheel (302), and a second end protection wheel (303); the pair of side support devices (3) are provided with a first end protection wheel (301), an infeed / outfeed sliding wheel (302), and a second end protection wheel (303) in sequence, starting from the end of the side opening of the material trough (101) on the opposite surface.

5. The irregular fire door leaf storage device according to claim 1, characterized in that, The bottom support device (2) also includes a self-locking push block (204); the bottom support device (2) is provided with a self-locking push block (204) corresponding to each linkage block (4), and the contact surface between the self-locking push block (204) and the linkage block (4) is an inclined structure.

6. The irregular fire door leaf storage device according to claim 1, characterized in that, The material cart frame (1) also includes casters (6) and directional wheels (7). One end of the bottom of the material cart frame (1) is provided with casters (6) and the other end is provided with directional wheels (7). Both casters (6) and directional wheels (7) have self-locking structures.

7. The irregular fire door leaf storage device according to claim 1, characterized in that, It also includes a traction arm (8), which is provided at one end of the material cart frame (1).

Citation Information

Patent Citations

  • Storage rack special for door leaf of civil air defense equipment

    CN214230537U