Coal mine underground air door installation device

Abstract

This invention discloses an installation device for an underground ventilation door in a coal mine, comprising an installation base, a scissor lift mechanism, a support base, and a drive mechanism. The installation base is fixed to the uprights of the ventilation door frame. The lower end of the scissor lift mechanism is connected to the installation base, and the upper end is connected to the ventilation door beam to be installed. The support base includes a fixed seat and a sliding seat. A set of fixed seats and a set of sliding seats are respectively provided at the lower and upper ends of the scissor lift mechanism. The drive mechanism is located on the installation base, and its output end is fixedly connected to the end with the sliding seat, used to drive the scissor lift mechanism to extend and retract, thereby causing the ventilation door beam to move up and down. This invention uses a scissor lift mechanism in conjunction with a drive mechanism to achieve mechanized and stable pushing and position holding of the ventilation door beam, replacing manual lifting operations, ensuring the verticality of the beam and the uprights, effectively reducing installation errors, lowering the ventilation door leakage rate, and featuring convenient operation and reliable safety.

Description

Technical Field

[0001] This invention relates to the field of mine ventilation facility installation technology, and in particular to an underground ventilation door installation device for coal mines. Background Technology

[0002] In underground coal mine ventilation systems, air doors are crucial facilities for controlling airflow and preventing gas accumulation. Their installation quality directly affects mine ventilation safety and production efficiency. Air doors typically consist of a door frame and a door leaf. The door frame includes uprights on both sides and a horizontal beam at the top. During installation, it is necessary to ensure the verticality and horizontality of the door frame to guarantee the precision of the fit between the door leaf and the door frame and reduce air leakage.

[0003] Currently, traditional ventilation door installation mostly employs manual labor combined with simple tools such as hand-operated hoists and crowbars. During installation, a loader is used to transport the door frame components, and workers manually install and fix the uprights to the side of the tunnel. Then, multiple workers work together to lift the crossbeam to the top of the upright for connection. Throughout the process, workers must continuously lift the crossbeam until the connection is complete. This method has the following problems: installation accuracy relies on manual experience, making it difficult to control the verticality and horizontality errors of the door frame, easily leading to excessive air leakage and affecting underground ventilation efficiency; manual lifting of the crossbeam is labor-intensive, especially when installing large-section ventilation doors, where the crossbeam is heavy, posing a safety hazard of falling and injuring personnel or damaging equipment; and the work efficiency is low, requiring multiple workers to cooperate, thus consuming significant human resources.

[0004] Therefore, how to provide a device that can mechanically assist in the installation of damper beams to improve installation accuracy, reduce labor intensity and safety risks has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0005] The present invention aims to at least partially solve one of the technical problems in the related art.

[0006] To achieve the above objectives, the present invention provides an underground ventilation door installation device for coal mines, including a ventilation door frame, and further comprising: The mounting base is used to fix the door frame to the uprights; A scissor lift mechanism, wherein the lower end of the scissor lift mechanism is connected to the mounting base, and the upper end of the scissor lift mechanism is connected to the installed damper beam. The support base includes a fixed base and a sliding base, and a set of fixed bases and a set of sliding bases are respectively provided at the lower end and the upper end of the scissor lift mechanism; A drive mechanism is provided on the mounting base. The output end of the drive mechanism is fixedly connected to one end of the scissor lift mechanism that is equipped with a sliding seat. The drive mechanism is used to drive the scissor lift mechanism to extend and retract, thereby driving the support base and the damper beam to move up and down.

[0007] This invention uses the installation base fixed to the column of the damper frame as the force base, and utilizes a scissor lift mechanism to perform telescopic movement under the drive mechanism, so as to drive the support seat and the damper beam to rise and fall smoothly, thereby realizing the mechanized pushing and installation of the damper beam and replacing the traditional manual lifting operation.

[0008] Optionally, the scissor lift mechanism includes at least one set of cross-hinged scissor levers; The lower end of the scissor lift assembly has a first lower connection point and a second lower connection point; the first lower connection point is hinged to the fixed seat, and the first lower connection point is fixedly connected to the mounting base through the fixed seat; the second lower connection point is hinged to the sliding seat, and the second lower connection point is slidably connected to the mounting base through the sliding seat. The upper end of the scissor lift assembly has a first upper connection point and a second upper connection point. The first upper connection point is fixedly hinged to the fixed seat and is fixedly connected to the damper beam through the fixed seat. The second upper connection point is hinged to the sliding seat and is slidably connected to the damper beam through the sliding seat.

[0009] Furthermore, the first lower connection point and the first upper connection point are located on the same side; the second upper connection point and the second lower connection point are located on the same side.

[0010] Furthermore, both the fixed seat and the sliding seat include a seat body and a connecting plate; the connecting plate is provided with a hinge hole so that the scissor lift mechanism can be hinged by the engagement of the pin and the hinge hole; The base of the fixed seat is fixedly connected to the mounting foundation and the damper beam; The sliding seat is slidably connected to the mounting base and the damper beam.

[0011] Furthermore, the base has a U-shaped structure, and the U-shaped opening of the base is used to accommodate the damper beam and the mounting base; The inner surface of the seat is provided with pulleys, which are used to make rolling contact with the surfaces of the damper beam and the mounting base.

[0012] Furthermore, the base is provided with fasteners, which can be detachably and fixedly connected to the damper beam and the mounting base, for temporarily fixing the base to the damper beam or the mounting base.

[0013] Furthermore, the driving mechanism is an electric push rod, one end of which is fixedly installed on the mounting base, and the other end is fixedly connected to the sliding seat connected to the lower end of the scissor lift mechanism.

[0014] Furthermore, the mounting base is detachably fixed to the uprights of the door frame by bolts. Furthermore, a level is installed on the mounting base.

[0015] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of an underground ventilation door installation device for coal mines, according to the present invention.

[0017] Figure 2 This is a schematic diagram of the support base of a coal mine underground ventilation door installation device according to the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Installation foundation; 2. Scissor lift mechanism; 21. First lower connection point; 22. Second lower connection point; 23. First upper connection point; 24. Second upper connection point; 3. Support base; 31. Fixed base; 32. Sliding base; 33. Base body; 34. Connecting plate; 35. Pulley; 36. Fastener; 4. Drive mechanism; 5. Damper frame; 6. Damper beam. Detailed Implementation

[0019] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0020] This invention provides an underground ventilation door installation device for coal mines, which is described below with reference to... Figures 1 to 2 Please provide a detailed explanation.

[0021] An underground ventilation door installation device for coal mines includes a ventilation door frame 5, an installation base 1, a scissor lift mechanism 2, a support base 3, and a drive mechanism 4. The installation base 1 is fixed to the door frame column of the ventilation door frame 5, providing a stable foundation for the entire installation device. The installation base 1 is detachably fixed to the door frame column by bolts, allowing for easy installation and disassembly at different installation positions. This adapts to the installation needs of ventilation doors in different locations in underground coal mines, improving the versatility and turnover efficiency of the device.

[0022] The lower end of the scissor lift mechanism 2 is connected to the mounting base 1, and the upper end of the scissor lift mechanism 2 is connected to the damper beam 6 to be installed. The support base 3 includes a fixed base 31 and a sliding base 32, and a set of fixed bases 31 and sliding bases 32 are respectively provided at the lower and upper ends of the scissor lift mechanism 2. The drive mechanism 4 is set on the mounting base 1, and the output end of the drive mechanism 4 is fixedly connected to the end of the scissor lift mechanism 2 where the sliding base 32 is installed. It is used to drive the scissor lift mechanism 2 to extend and retract, so as to drive the support base 3 and the damper beam 6 to move up and down.

[0023] This invention uses the installation base 1 fixed to the door frame column as the force-bearing foundation. A scissor lift mechanism 2, driven by a drive mechanism 4, performs telescopic movement, smoothly raising and lowering the support seat 3 and the damper beam 6. This achieves mechanized pushing and installing of the damper beam 6, replacing traditional manual lifting operations. The scissor lift mechanism 2 has a fixed seat 31 at its lower end and a sliding seat 32 at its upper end. The fixed seat 31 provides a stable hinge support point, while the sliding seat 32 allows for sliding connection to adapt to changes in spacing during the extension and retraction of the scissor mechanism, ensuring smooth lifting movement. The output end of the drive mechanism 4 is fixedly connected to one end of the sliding seat 32, directly driving the sliding seat 32 to move. This results in a short transmission path, high efficiency, and rapid response to operating commands, improving installation efficiency.

[0024] In some embodiments, the scissor lift mechanism 2 includes at least one set of cross-hinged scissor rods. The scissor rod set consists of two rods cross-hinged at the middle, featuring a simple structure and high load-bearing capacity, capable of meeting the lifting requirements of large-section ventilation door beams 6 in underground coal mines. The lower end of the scissor rod set has a first lower connection point 21 and a second lower connection point 22; the first lower connection point 21 is hinged to a fixed seat 31, and the first lower connection point 21 is fixedly connected to the mounting base 1 via the fixed seat 31. The second lower connection point 22 is hinged to a sliding seat 32, and the second lower connection point 22 is slidably connected to the mounting base 1 through the sliding seat 32; The upper end of the scissor lift assembly has a first upper connection point 23 and a second upper connection point 24. The first upper connection point 23 is fixedly hinged to a fixed seat 31 and is fixedly connected to the damper beam 6 through the fixed seat 31. The second upper connection point 24 is hinged to a sliding seat 32 and is slidably connected to the damper beam 6 through the sliding seat 32.

[0025] Specifically, when the drive mechanism 4 pushes the sliding seat 32 to move, the second lower connection point 22 slides along the mounting base 1, causing the scissor lift assembly to extend and retract in the height direction, thus realizing the lifting and lowering movement of the damper beam 6. A fixed seat 31 and a sliding seat 32 are also provided at the upper end, ensuring a reliable fixed and sliding fit between the upper end of the scissor lift mechanism 2 and the damper beam 6. The first upper connection point 23 is fixedly connected to the damper beam 6 via the fixed seat 31, providing a stable force support point. The second upper connection point 24 is slidably connected to the damper beam 6 via the sliding seat 32, adaptively adjusting its position during lifting and lowering to ensure smooth movement and uniform force distribution. During installation, when the scissor lift mechanism 2 extends, the damper beam 6 is smoothly pushed upwards to the top docking position of the door frame column. Throughout the process, the damper beam 6 maintains a horizontal posture, ensuring the vertical docking accuracy with the door frame column.

[0026] In some embodiments, the first lower connection point 21 and the first upper connection point 23 are located on the same side; the second upper connection point 24 and the second lower connection point 22 are located on the same side. By setting the connection points corresponding to the fixed seat 31 on the same side and the connection points corresponding to the sliding seat 32 on the same side, the scissor lift assembly is subjected to symmetrical forces during telescopic movement, resulting in smoother movement. This avoids the phenomenon of uneven load and movement jamming caused by asymmetrical arrangement of connection points, further ensuring the horizontal posture and verticality of the damper beam 6 during the lifting and lowering process, so that the damper beam 6 can accurately align with the top connection position of the door frame column.

[0027] In some embodiments, both the fixed base 31 and the sliding base 32 include a base body 33 and a connecting plate 34. The connecting plate 34 is provided with a hinge hole so that the scissor lift mechanism 2 can be hinged by the engagement of the pin and the hinge hole, which is simple and reliable in structure and easy to disassemble and assemble; The seat body 33 of the fixed base 31 is fixedly connected to the installation base 1 and the damper beam 6, providing a stable support foundation for the scissor lift mechanism 2; The seat 33 of the sliding seat 32 is slidably connected to the mounting base 1 and the damper beam 6, so that the connection point can move flexibly along the mounting base 1 or the damper beam 6, adapting to the change in the distance between the connection points during the telescopic movement of the scissor mechanism, and ensuring the smooth operation of the lifting movement.

[0028] In some embodiments, the seat 33 is a U-shaped structure, and the U-shaped opening of the seat 33 is used to accommodate the damper beam 6 and the mounting base 1. The U-shaped structure can effectively accommodate and wrap the damper beam 6 or the mounting base 1 from the side, preventing the support seat 3 from coming off the damper beam 6 or the mounting base during the lifting process, and providing stable and reliable load-bearing and guidance. The inner surface of the seat 33 is provided with a pulley 35. The pulley 35 is used to roll contact with the surfaces of the damper beam 6 and the mounting base 1. By setting the pulley 35, rolling friction is formed between the support seat 3 and the damper beam 6 and the mounting base 1 instead of sliding friction, which greatly reduces the resistance during relative movement. During the process of pushing the damper beam 6 upward, the pulley 35 causes the support seat 3 to move in a rolling manner relative to the surface of the damper beam 6, making the movement easy and smooth, reducing the load on the drive mechanism 4, enabling the electric push rod to complete the lifting action with a smaller driving force, and extending the service life of the equipment. When the damper beam 6 needs to be finely adjusted along its own length, the pulley 35 makes it easy to slide and adjust the damper beam 6, making the operation light and labor-saving, and improving the alignment accuracy and installation efficiency of the damper beam 6 and the door frame column.

[0029] In some embodiments, the base 33 is provided with a fastener 36, which can be detachably and fixedly connected to the damper beam 6 and the mounting base 1, for temporarily fixing the base 33 to the damper beam 6 or the mounting base 1. The fastener 36 can be a bolt or other lockable structure.

[0030] It should be noted that, on the one hand, the fixed seat 31 can be fixedly connected to the damper beam 6 or the mounting base 1 via fasteners; on the other hand, after the damper beam 6 is pushed to the target installation position, the operator can temporarily lock the sliding seat 32 to the damper beam 6 or the mounting base 1 using fasteners 36, keeping the damper beam 6 stable and facilitating the final bolt fixing operation between the damper beam 6 and the door frame column without continuous manual support, thus achieving mechanized position maintenance during the installation process of the damper beam 6. The detachable design of the fasteners 36 also facilitates the removal of the device from the damper beam 6 and the mounting base 1 after installation, improving the ease of operation and turnover efficiency of the device.

[0031] In some embodiments, the drive mechanism 4 is an electric push rod. One end of the electric push rod is fixedly installed on the mounting base 1, and the other end is fixedly connected to the sliding seat 32 connected to the lower end of the scissor lift mechanism 2. The electric push rod drives the lead screw to rotate through a motor, causing the nut to move along the lead screw axis, thereby pushing the sliding seat 32 and the scissor lift mechanism 2 to move. The electric push rod has a thread self-locking function. When the motor stops rotating, the thread self-locking between the lead screw and the nut can maintain the current position unchanged, so that the damper beam 6 is stably maintained at the target height. Even if the power is cut off, it will not slide down, fundamentally eliminating the safety hazards of the beam accidentally falling and injuring people or damaging equipment in the traditional manual lifting method. At the same time, the electric push rod has high control precision and can achieve precise adjustment of the position of the damper beam 6, ensuring the verticality and docking accuracy of the damper beam 6 and the door frame column during installation. The electric push rod is electrically driven, not restricted by the mine compressed air system, has strong adaptability, and can work reliably under various working conditions in coal mines.

[0032] In some embodiments, a level is provided on the installation base. With a level on the installation base 1, operators can visually determine the horizontal state of the installation base 1 during its fixing, ensuring that the installation base 1 is installed horizontally. This guarantees the subsequent vertical movement of the scissor lift mechanism 2 and the horizontal lifting of the damper beam 6, significantly improving the installation accuracy of the installation base 1 and thus ensuring the overall verticality and horizontality of the damper installation.

[0033] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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, an electrical connection, or a connection that allows communication between them; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0038] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A coal mine underground ventilation door installation device, comprising a ventilation door frame, characterized in that, Also includes: The mounting base is used to fix the door frame to the uprights; A scissor lift mechanism, wherein the lower end of the scissor lift mechanism is connected to the mounting base, and the upper end of the scissor lift mechanism is connected to the installed damper beam. The support base includes a fixed base and a sliding base, and a set of fixed bases and a set of sliding bases are respectively provided at the lower end and the upper end of the scissor lift mechanism; A drive mechanism is provided on the mounting base. The output end of the drive mechanism is fixedly connected to one end of the scissor lift mechanism that is equipped with a sliding seat. The drive mechanism is used to drive the scissor lift mechanism to extend and retract, thereby driving the support base and the damper beam to move up and down.

2. The coal mine underground ventilation door installation device according to claim 1, characterized in that, The scissor lift mechanism includes at least one set of cross-hinged scissor levers; The lower end of the scissor lift assembly has a first lower connection point and a second lower connection point; the first lower connection point is hinged to the fixed seat, and the first lower connection point is fixedly connected to the mounting base through the fixed seat; the second lower connection point is hinged to the sliding seat, and the second lower connection point is slidably connected to the mounting base through the sliding seat. The upper end of the scissor lift assembly has a first upper connection point and a second upper connection point. The first upper connection point is fixedly hinged to the fixed seat and is fixedly connected to the damper beam through the fixed seat. The second upper connection point is hinged to the sliding seat and is slidably connected to the damper beam through the sliding seat.

3. The coal mine underground ventilation door installation device according to claim 2, characterized in that, The first lower connection point and the first upper connection point are located on the same side; the second upper connection point and the second lower connection point are located on the same side.

4. The coal mine underground ventilation door installation device according to claim 2, characterized in that, Both the fixed seat and the sliding seat include a seat body and a connecting plate; the connecting plate is provided with a hinge hole so that the scissor lift mechanism can be hinged by the engagement of the pin and the hinge hole; The base of the fixed seat is fixedly connected to the mounting foundation and the damper beam; The sliding seat is slidably connected to the mounting base and the damper beam.

5. The coal mine underground ventilation door installation device according to claim 4, characterized in that, The base has a U-shaped structure, and the U-shaped opening of the base is used to accommodate the damper beam and the mounting base; The inner surface of the seat is provided with pulleys, which are used to make rolling contact with the surfaces of the damper beam and the mounting base.

6. The coal mine underground ventilation door installation device according to claim 5, characterized in that, The base is provided with fasteners, which can be detachably and fixedly connected to the damper beam and the mounting base, for temporarily fixing the base to the damper beam or the mounting base.

7. The coal mine underground ventilation door installation device according to claim 1, characterized in that, The driving mechanism is an electric push rod, one end of which is fixedly installed on the mounting base, and the other end is fixedly connected to the sliding seat connected to the lower end of the scissor lift mechanism.

8. A coal mine underground ventilation door installation device according to any one of claims 1 to 7, characterized in that, The mounting base is detachably fixed to the uprights of the door frame by bolts.

9. A coal mine underground ventilation door installation device according to any one of claims 1 to 7, characterized in that, A level is installed on the foundation.

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