Mining automatic door device

Abstract

The utility model relates to the technical field of automatic door opening and closing, and discloses a mining automatic door device. The mining automatic door device comprises two door columns, a door beam, a driving door, a movable door, a telescopic mechanism, a limiting shaft and a limiting groove, the design that the two doors (the driving door and the movable door) are hinged to be matched with the telescopic mechanism is adopted, when the mining automatic door device is opened, the driving door and the movable door can be folded and shrunk towards one side of a roadway in sequence, and the safety of the roadway is improved. And the space required for opening is greatly reduced. The problem that a traditional integrated air door is difficult to install due to the fact that the opening and closing space is large is solved, it is guaranteed that the integrated air door can be flexibly deployed even in the roadway environment with the limited space, and the construction flexibility and the space utilization efficiency of a mine ventilation system are effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of automatic door opening and closing, for example, to an automatic door device for mines. Background Art

[0002] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.

[0003] Mine dampers are widely used in ventilation systems in underground projects such as coal mines, metal mines, and tunnels. By reasonably setting up mine dampers, the airflow in the mine can be diverted, regulated, and controlled, the ventilation effect can be improved, and the safety of miners can be guaranteed. However, the mine safety dampers in the existing technology generally adopt an integrated structure. Although this design meets the basic ventilation and safety isolation requirements to a certain extent, it has exposed a series of problems in actual application. The integrated door body requires a large space to open and close. Since the front and rear door leaves need to maintain a certain distance to ensure that there is no airflow short circuit, this results in the two dampers plus the middle partition having a large overall footprint. For tunnels with limited space, installation and use are extremely inconvenient, and may even be impossible to deploy due to insufficient space, which seriously affects the effective construction of the ventilation system and the safe production layout of the mine. Summary of the Invention

[0004] This application provides an automatic door system for mines. By employing a design with two hinged doors (a driving door and a movable door) and a telescopic mechanism, the driving door and the movable door can sequentially fold and retract toward one side of the tunnel when the system is opened, significantly reducing the space required for opening. This not only solves the installation difficulties caused by the large opening and closing space of traditional integrated dampers, but also ensures flexible deployment even in space-constrained tunnel environments, effectively improving the construction flexibility and space utilization efficiency of mine ventilation systems.

[0005] An automatic door device for mines, comprising: two door posts, a door beam, a driving door, a movable door, a telescopic mechanism, a limiting shaft, and a limiting slot;

[0006] Two doorposts, set in the prefabricated door opening of the lane;

[0007] Door beam, with both ends connected to the upper ends of the doorposts;

[0008] Drive door, one side of which is hinged to the door post;

[0009] A movable door, one side of which is hinged to the driving door;

[0010] A telescopic mechanism, one end of which is rotatably connected to a door post close to the drive door, and the other end of which is rotatably connected to the drive door;

[0011] A limiting shaft, the lower end of which is rotatably connected to the movable door;

[0012] The limiting groove is provided on the door beam and is in sliding cooperation with the limiting shaft to accommodate the lateral movement of the limiting shaft therein.

[0013] In some embodiments, the automatic door device for mining further includes: a limiting slider, which is arranged above the door beam, connected to the limiting shaft, and slidingly engaged with the upper part of the door beam.

[0014] In some embodiments, one end of the limiting slider is connected to the roller bracket, the roller bracket is rotatably connected to the roller, and the roller rolls horizontally on the upper part of the door beam.

[0015] In some embodiments, a guide groove is provided on the roller, a guide groove body is connected to the upper part of the door beam, a first guide rail is provided on the guide groove body, the guide groove and the first guide rail are adapted in shape and cooperate with each other, and the roller rolls in the guide groove body.

[0016] In some embodiments, a second guide rail is provided on the inner wall of the guide groove body, one side of the roller bracket is connected to the slide groove member, and the slide groove member is slidably engaged with the second guide rail.

[0017] In some embodiments, two rollers are provided.

[0018] In some embodiments, the movable door and the driving door are connected via a plurality of folding door groups, the folding door groups including: a first folding door, a second folding door;

[0019] a first folding door hinged to the driving door;

[0020] The second folding door is hinged to the first folding door on one side, the upper part of the hinge shaft is connected to the guide shaft, the guide shaft is slidably matched with the limit groove, and the other side is hinged to the movable door or another folding door group.

[0021] The automatic door device for mines provided in this application can achieve the following technical effects:

[0022] By adopting a design with two doors (driving door and movable door) hinged and equipped with a telescopic mechanism, the driving door and movable door can be folded and retracted to one side of the tunnel in sequence when the device is opened, greatly reducing the space required for opening. This not only solves the installation difficulty caused by the large opening and closing space of traditional integrated dampers, but also ensures flexible deployment even in space-constrained tunnel environments, effectively improving the construction flexibility and space utilization efficiency of mine ventilation systems.

[0023] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] One or more embodiments are exemplarily described by corresponding drawings. These exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation. In addition,

[0025] Figure 1 This is a schematic diagram of the three-dimensional structure of an automatic door device for a mine provided by an embodiment of the present disclosure;

[0026] Figure 2 This is a schematic diagram of the three-dimensional structure of the upper portion of the door beam provided by an embodiment of the present disclosure;

[0027] Figure 3 yes Figure 2 A in the middle is an enlarged schematic diagram;

[0028] Figure 4 is a schematic cross-sectional view of an automatic door device for a mine provided by an embodiment of the present disclosure;

[0029] Figure 5 yes Figure 4 The enlarged schematic diagram of point B in the middle;

[0030] Figure 6 is a schematic side view of a guide slot provided by an embodiment of the present disclosure;

[0031] Figure 7 This is a schematic diagram of the folding process of the automatic door device for mining provided in an embodiment of the present disclosure.

[0032] Figure 8 This is another schematic diagram of the folding process of an automatic door device for mining provided in an embodiment of the present disclosure.

[0033] Reference numerals:

[0034] 11. Movable door; 12. Drive door; 121. Telescopic mechanism; 13. Doorpost; 14. Door beam; 141. Limiting groove; 15. Protective cover; 16. First folding door; 17. Second folding door; 21. Limiting shaft; 22. Limiting slider; 23. Roller bracket; 24. Roller; 31. Guide groove body; 311. First guide rail; 312. Second guide rail. DETAILED DESCRIPTION

[0035] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0036] In the description and claims of the embodiments of the present disclosure, as well as in the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate to describe the embodiments of the present disclosure herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0037] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to having a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0038] Furthermore, the terms "disposed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal connection between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the embodiments of this disclosure based on the specific circumstances.

[0039] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0040] Combine Figure 1-8 As shown, the embodiment of the present disclosure provides an automatic door device for a mine, comprising: two door posts 13, a door beam 14, a driving door 12, a movable door 11, a telescopic mechanism 121, a limiting shaft 21, and a limiting groove 141;

[0041] Two doorposts 13 are installed within the prefabricated doorway. First, they are fixed on either side of the prefabricated doorway, ensuring they are vertical and stable. Then, door beams 14 are connected to the upper ends of the doorposts 13 to form a stable doorframe structure. The doorposts 13 are made of bent and welded metal plates and have a rectangular cross-section.

[0042] Door beam 14 is connected at both ends to the upper ends of door posts 13. A protective cover 15 is attached above door beam 14, protecting components such as the limiting shaft 21, limiting groove 141, guide groove body 31, and roller 24. The upper wall of protective cover 15 is directly or indirectly connected to the prefabricated door opening. Door beam 14 is made of bent and welded metal plates or steel profiles, and has a rectangular cross-section.

[0043] A drive door 12, one side of which is hinged to the door post 13;

[0044] The movable door 11 is hinged to the driving door 12 on one side; the driving door 12 and the movable door 11 are made of bent and welded metal plates, and have a rectangular cross-section.

[0045] The telescopic mechanism 121 has one end pivotally connected to the doorpost 13 near the drive door 12, and the other end pivotally connected to the drive door 12. One end of the telescopic mechanism 121 is connected to the doorpost 13 near the drive door 12 via a pivoting connector. Considering the working environment in the laneway, it is preferably located at the upper portion of the doorpost 13. The other end is connected to the drive door 12 via a pivoting connector. For stable operation, the telescopic mechanism 121 is preferably positioned horizontally. The telescopic mechanism 121 can be a hydraulic cylinder, pneumatic cylinder, or electric push rod, depending on actual needs, to ensure smooth opening and closing of the drive door 12. The pivoting connectors are connecting ears and pins.

[0046] The limiting shaft 21 has a lower end that is rotatably connected to the movable door 11 ; the limiting shaft 21 is a cylindrical structure, and a lower portion thereof is rotatably connected to the movable door 11 via a bearing.

[0047] Limiting slot 141, a rectangular slot, is provided on door beam 14 and slides with limiting shaft 21, accommodating its lateral movement. The hinged connection between movable door 11 and drive door 12, combined with the sliding movement of limiting shaft 21 within limiting slot 141, ensures the stability of the damper during opening and closing.

[0048] Depending on actual needs, sensors (such as ultrasonic ranging sensors) can be installed in locations such as lanes and doorframes and connected to a central controller. Using pre-programmed logic, the controller automatically controls the movement of the telescopic mechanism 121, enabling the damper to open and close automatically, upon detecting a target within a set distance range. A manual operation interface is also provided as a backup, ensuring manual operation of the damper in the event of an automated system failure.

[0049] The automatic mining door device provided by the disclosed embodiment utilizes a dual-door (drive door 12 and movable door 11) hingedly coupled with a telescopic mechanism 121. When the device is opened, the drive door 12 and movable door 11 can sequentially fold and retract toward one side of the tunnel, significantly reducing the space required for opening. This not only solves the installation difficulties associated with traditional integrated dampers due to the large opening and closing space, but also ensures flexible deployment even in space-constrained tunnel environments, effectively improving the construction flexibility and space utilization efficiency of mine ventilation systems.

[0050] In some embodiments, the automatic door device for mining further includes: a limit slider 22, which is arranged above the door beam 14, connected to the limit shaft 21, and slidingly cooperates with the upper part of the door beam 14. In this embodiment, the limit slider 22 is cleverly arranged above the door beam 14 and connected to the limit shaft 21. A sliding fit is formed between the limit slider 22 and the upper part of the door beam 14, providing additional stability and guiding force for the movable door 11. The limit slider 22 is a T-shaped plate structure. The movable door 11 has a downward pulling force due to gravity, while the limit slider 22 gives the limit shaft 21 an upward pulling force, and the two offset each other. The door beam 14 has an upward supporting effect on the limit slider 22.

[0051] In some embodiments, one end of the limiting slider 22 is connected to a roller bracket 23, which is rotatably connected to a roller 24. The roller 24 rolls laterally on the upper portion of the door beam 14. The roller bracket 23 is U-shaped, with two rollers 24 rotatably connected between the two U-shaped walls via a rotating shaft. The rollers 24 roll laterally on the upper portion of the door beam 14, significantly reducing sliding friction and improving the smoothness and durability of the movable door 11.

[0052] In some embodiments, the roller 24 is provided with a guide groove, which may be a V-shaped groove, an arc-shaped groove, or a rectangular groove. A guide groove body 31 is connected to the upper portion of the door beam 14. The cross-section of the guide groove body 31 is U-shaped, and the length of the guide groove body 31 is selected according to actual needs. The guide groove body 31 is provided with a first guide rail 311. The guide groove and the first guide rail 311 are adapted in shape and cooperate with each other. The roller 24 rolls in the guide groove body 31. The stable rolling of the roller 24 in the guide groove body 31 effectively prevents deviation or jamming.

[0053] In some embodiments, the inner wall of the guide trough 31 is provided with a second guide rail 312. Two second guide rails 312 are provided, one on each of the two opposing inner sidewalls of the trough. One side of the roller bracket 23 is connected to a slide member. Two slide members are provided, one on each side of the roller bracket 23, and the slide members slide in engagement with the second guide rail 312. The second guide rail 312 is a rectangular slide rail, and the slide member has a slide groove that matches the shape of the second guide rail 312. The first guide rail 311 and the second guide rail 312 form a dual guide mechanism, which addresses the forces exerted by the movable door 11 on the limit shaft 21 and the limit slider 22 in various directions, ensuring stable movement of the roller 24 under complex operating conditions.

[0054] In some embodiments, two rollers 24 are provided.

[0055] When the damper needs to be opened, the telescopic mechanism 121 is activated, driving the drive door 12 to rotate about the hinge axis. As the drive door 12 opens, the hinged edge of the movable door 11 is pulled up by the drive door 12. The other end of the movable door 11, guided by the limit shaft 21 and the limit slider 22, slides smoothly along the guide groove 31 on the door beam 14 until it reaches the predetermined position.

[0056] In some embodiments, the movable door 11 and the driving door 12 are connected via a plurality of folding door groups, the folding door groups including: a first folding door 16, a second folding door 17;

[0057] a first folding door 16 hinged to the driving door 12;

[0058] Second folding door 17 is hinged on one side to first folding door 16. The upper portion of the hinge shaft is connected to a guide shaft that slides in a stop slot 141. The other side is hinged to movable door 11 or another folding door assembly. The guide shaft provides a stable motion trajectory for the folding door assembly and, through the restraining action of stop slot 141, prevents the folding door assembly from shifting or shaking during movement.

[0059] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless expressly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A mine automatic door device, characterized in that: include: Two doorposts, set in the prefabricated door opening of the lane; Door beam, with both ends connected to the upper ends of the doorposts; Drive door, one side of which is hinged to the door post; A movable door, one side of which is hinged to the driving door; A telescopic mechanism, one end of which is rotatably connected to a door post close to the drive door, and the other end of which is rotatably connected to the drive door; A limiting shaft, the lower end of which is rotatably connected to the movable door; The limiting groove is provided on the door beam and is in sliding cooperation with the limiting shaft to accommodate the lateral movement of the limiting shaft therein; A limit slider is provided above the door beam, connected to the limit shaft, and slides with the upper portion of the door beam. One end of the limit slider is connected to the roller bracket, which is rotatably connected to the roller, and the roller rolls horizontally on the upper portion of the door beam; and A guide groove is provided on the roller, a guide groove body is connected to the upper part of the door beam, a first guide rail is provided on the guide groove body, the guide groove and the first guide rail are adapted in shape and cooperate with each other, and the roller rolls in the guide groove body.

2. The automatic door device for mine according to claim 1, characterized in that: A second guide rail is provided on the inner wall of the guide groove body, one side of the roller bracket is connected to the slide groove part, and the slide groove part is slidably matched with the second guide rail.

3. The automatic door device for mine according to claim 1, characterized in that: There are two rollers.

4. The automatic door device for mine according to any one of claims 1 to 3, characterized in that: The movable door and the driving door are connected by several folding door groups, which include: a first folding door hinged to the driving door; The second folding door is hinged to the first folding door on one side, the upper part of the hinge shaft is connected to the guide shaft, the guide shaft is slidably matched with the limit groove, and the other side is hinged to the movable door or another folding door group.

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