Temporary supporting device for coal mining working face

Abstract

The utility model provides a temporary supporting device for a coal mining working face, which comprises a beam frame, a plurality of supporting plates and a plurality of supporting plates, the top of the supporting rod is connected with a mounting column, and the mounting column is embedded into the mounting groove; a threaded connecting part is arranged on the side wall of the top of the supporting rod, and the threaded column is connected with the supporting rod through the threaded connecting part; the side, close to the interior of the supporting rod, of the threaded column is connected with one end of a second sliding rod. The other end of the second sliding rod is provided with a first wedge-shaped structure; one end of the first sliding rod is located in the mounting column, and the other end of the first sliding rod is provided with a second wedge-shaped structure in sliding contact with the first wedge-shaped structure. And the side wall of the mounting column is rotationally connected with a fixing clamp, and when the threaded column drives the second sliding rod to move towards the interior of the supporting rod, one end of the fixing clamp abuts against the side wall of the first sliding rod, and the other end of the fixing clamp abuts against the inner wall of the mounting groove, so that locking of the mounting column and the mounting groove is achieved.

Description

Technical Field

[0001] The present application relates to the field of coal mining machinery, and in particular to a temporary support device for a coal mining working face. Background Art

[0002] In coal mining, temporary support at the working face is crucial for ensuring worker safety and production efficiency. As mining depth increases, ground pressure rises, placing increasing demands on support devices. While traditional support methods can generally meet initial mining needs, they present challenges in ease of use and effectiveness.

[0003] Currently, temporary support systems for coal mining faces primarily rely on bolted connections. Bolted connections offer advantages such as ease of disassembly and maintenance, particularly when support components require frequent adjustment or replacement. The rapid assembly and disassembly of bolts significantly improves work efficiency. Furthermore, bolts made from high-strength materials provide reliable connections and load-bearing capacity, making them particularly suitable for applications subject to high tension or shear forces.

[0004] However, while bolted fastening has improved the safety and flexibility of coal mining operations to a certain extent, it still presents some significant challenges. Bolts, typically made of carbon steel or other metals, are highly susceptible to corrosion in humid, acidic, or saline underground environments, leading to rust. This not only reduces the bolt's strength and reliability but also increases its surface roughness, reducing friction with the nut or other fasteners. This can lead to the bolt gradually loosening, compromising the stability of the entire support system and posing a potential threat to the safety of the coal mining face. Utility Model Content

[0005] An embodiment of the present application provides a temporary support device for a coal mining working face to solve the problem that bolt connections are easily loosened due to rust.

[0006] The embodiment of the present application provides a temporary support device for a coal mining working face, comprising: a support mechanism, wherein a protective mechanism is provided on the top of the support mechanism;

[0007] The protection mechanism includes: a beam frame, wherein the four corners of the bottom of the beam frame are provided with mounting slots;

[0008] The support mechanism includes: a support rod, a mounting post connected to the top of the support rod, and the mounting post is embedded in the mounting groove; a threaded connection portion is provided on the top side wall of the support rod, and the threaded post is connected to the support rod through the threaded connection portion;

[0009] The first slide rod and the second slide rod, the threaded column is connected to one end of the second slide rod near the inner side of the support rod; the other end of the second slide rod has a first wedge structure; one end of the first slide rod is located inside the mounting column, and the other end has a second wedge structure that is in sliding contact with the first wedge structure; when the threaded column drives the second slide rod to move toward the inner side of the support rod, the second slide rod pushes against the first slide rod and moves toward the mounting column;

[0010] The side wall of the mounting column is rotatably connected to a fixing clip. When the threaded column drives the second sliding rod to move toward the inside of the support rod, one end of the fixing clip abuts the side wall of the first sliding rod, and the other end abuts the inner wall of the mounting groove to achieve locking of the mounting column and the mounting groove.

[0011] In a feasible implementation, the method further includes:

[0012] A first spring, one end of which is fixedly connected to the inner wall of the mounting column, and the other end of which is fixedly connected to the top of the first sliding rod.

[0013] In a feasible implementation, it further includes: side panels and a top cover, wherein the top cover is fixedly connected to the top of the beam frame, and the side panels are detachable and slidably connected to the sliding track inside the beam frame.

[0014] In a feasible implementation, the beam frame includes: a sliding rod, the sliding rod being fixedly connected to the four edges inside the beam frame; a slider being provided on the sliding rod; a second spring being sleeved on the sliding rod, and having both ends fixedly connected to the symmetrical sliders;

[0015] The side panel includes: a fixing block, which is fixedly connected to a side of the side panel facing outward and is distributed along the length direction of the side panel;

[0016] a transmission rod, one end of which is rotatably connected to the side of the fixed block away from the side plate; and the other end of which is rotatably connected to the side of the slider away from the side plate;

[0017] The fixed block includes a damper, which is rotatably connected to the interior of the fixed block, and an output end of the damper is fixedly connected to a coupling; the outer wall of the coupling is rotatably connected to the interior of the slider.

[0018] In a feasible implementation, the method further includes:

[0019] A pressure sensor is fixed on both sides of the outer wall of the beam;

[0020] An alarm bell is fixedly connected to one side of the outer wall of the beam.

[0021] In a feasible implementation, the method further includes:

[0022] An alarm light is fixedly connected to an outer wall on one side of the interior of the beam.

[0023] In a feasible implementation, the beam frame adopts a triangular frame structure, which is composed of multiple horizontal beams and vertical beams.

[0024] In a feasible implementation, the damper is a hydraulic damper or a gas damper with adjustable damping force.

[0025] In a feasible implementation, the number of the pressure sensors is at least two.

[0026] In a feasible implementation, the beam frame and the support rod are fixed in a detachable manner.

[0027] An embodiment of the present application provides a temporary support device for a coal mining working face. When the threaded column moves toward the inside of the support rod, it pushes the second slide rod to move inward. The first wedge structure at one end of the second slide rod contacts the second wedge structure on the first slide rod. Due to the design of the wedge structure, the linear movement of the second slide rod is converted into an oblique movement of the first slide rod. Under the action of the wedge structure, the first slide rod moves toward the direction close to the mounting column. The movement of the first slide rod causes one end of the fixing clamp to press against the side wall of the first slide rod, while the other end presses against the inner wall of the mounting groove, forming a locking state, thereby achieving a stable connection between the mounting column and the mounting groove.

[0028] The sliding rod is fixed to the four edges inside the beam, and the slider can slide freely on the sliding rod, providing a path for subsequent force transmission. The two ends of the second spring are respectively fixedly connected to the symmetrical slider to provide a restoring force to ensure that the slider remains in a neutral position when there is no external force. One end of the transmission rod in the fixed block is connected to the side plate and the other end is connected to the slider. When the side plate is impacted, the force is transmitted to the slider through the transmission rod. At this time, the sliders on both sides interact with each other to disperse and offset the impact force. The damper is connected to the transmission rod, which absorbs part of the energy when the side plate is impacted and reduces the impact force. At the same time, the slider returns to its original position under the action of the second spring, further ensuring the stability and impact resistance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a three-dimensional schematic diagram of the temporary support device for coal mining working face provided by this application;

[0030] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure of the support rods of the temporary support device for the middle coal mining working face;

[0031] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0032] Figure 4 yes Figure 1 Schematic diagram of the cross-sectional structure of the beam frame of the temporary support device for the middle coal mining working face;

[0033] Figure 5 yes Figure 4 Enlarged view of point B in the middle.

[0034] Description of reference numerals:

[0035] 1-beam frame; 2-side panel; 3-top cover; 4-support rod; 5-alarm light; 6-alarm bell; 7-pressure sensor; 8-mounting slot; 9-mounting column; 10-first spring; 11-first slide bar; 12-fixing clamp; 13-second slide bar; 14-threaded column; 15-transmission rod; 16-slider; 17-damper; 18-slide bar; 19-second spring; 20-coupling; 21-fixing block. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0037] Existing temporary support systems for coal mining faces are typically secured with bolts. Bolts allow for easy disassembly, facilitating repair, replacement, or reassembly of parts. This makes bolting ideal for applications requiring regular maintenance or replacement. Furthermore, bolts are made of high-strength materials, providing a reliable connection and load-bearing capacity. This makes bolting an excellent choice for applications requiring high tension or shear forces.

[0038] However, bolts are typically made of carbon steel or other metals, which are susceptible to corrosion in humid, acidic, or salty environments, leading to rust. This reduces the bolt's strength and reliability. Furthermore, rust increases the surface roughness of the bolt, reducing the friction between the bolt and the nut or connector. This can cause the bolt to gradually loosen, affecting the stability of the entire connection. To address this issue, this application proposes a temporary support device for coal mining working faces. The specific structure of the temporary support device for coal mining working faces provided in this application is described in detail below, in conjunction with the accompanying drawings.

[0039] Reference Figure 1-Figure 3As shown, an embodiment of the present application provides a temporary support device for a coal mining working face, including: a support mechanism, and a protective mechanism is provided on the top of the support mechanism; ensuring that there is sufficient coverage and protection on the top of the coal mining working face to prevent sudden collapse of the roof rock and ensure the personal safety of the workers.

[0040] The protection mechanism includes: a beam frame 1, and mounting grooves 8 are provided at the four corners of the bottom of the beam frame 1; they facilitate the rapid positioning and installation of the support rods 4, ensuring a stable connection of the entire support device.

[0041] The support mechanism includes: a support rod 4, a mounting post 9 is connected to the top of the support rod 4, and the mounting post 9 is embedded in the mounting groove 8; a threaded connection portion is provided on the top side wall of the support rod 4, and a threaded post 14 is connected to the support rod 4 through the threaded connection portion;

[0042] The first slide rod 11 and the second slide rod 13, the threaded column 14 is connected to one end of the second slide rod 13 near the inner side of the support rod 4; the other end of the second slide rod 13 has a first wedge structure; one end of the first slide rod 11 is located inside the mounting column 9, and the other end has a second wedge structure that slides in contact with the first wedge structure; when the threaded column 14 drives the second slide rod 13 to move toward the inside of the support rod 4, the second slide rod 13 pushes against the first slide rod 11 and moves in the direction close to the mounting column 9; the second slide rod 13 is driven to move by the threaded column 14, and the interaction between the first wedge structure and the second wedge structure is utilized to squeeze the first slide rod 11 and cling to the support structure, forming a wedge locking effect, which can maintain the tightness of the connection without using additional fasteners.

[0043] The side wall of the mounting post 9 is rotatably connected to a fixing clip 12. When the threaded post 14 drives the second slide bar 13 to move inside the support bar 4, one end of the fixing clip 12 abuts against the side wall of the first slide bar 11, and the other end abuts against the inner wall of the mounting groove 8, thereby locking the mounting post 9 with the mounting groove 8. This further enhances the locking effect between the mounting post 9 and the mounting groove 8, ensuring the rigidity and stability of the support structure.

[0044] The dual locking of the wedge locking mechanism and the fixing clamp ensures the firmness of the support structure on the coal mining face, greatly improving the safety of workers when working on the face. The wedge structure driven by the threaded column makes the connection between the support rod and the beam frame tighter, maintaining structural stability even under high stress and dynamic load conditions, and reducing the risk of loosening due to vibration or impact. The tedious steps of traditional bolt connections are eliminated. Operators only need to rotate the threaded column to quickly complete the connection and locking of the support rod and the beam frame, greatly improving on-site operation efficiency. It avoids the loosening problem caused by rust and wear of traditional bolt connections, reduces the frequency of maintenance and replacement, extends the service life of the entire support system, and reduces operating costs.

[0045] Reference Figure 3 As shown, in some embodiments, a first spring 10 is further included, one end of which is fixedly connected to the inner wall of the mounting post 9, and the other end is fixedly connected to the top of the first slide bar 11. When the support structure is disassembled or adjusted, the first spring 10 can cause the first slide bar 11 to automatically retract to its initial position.

[0046] When removing the support device, as the threaded column 14 rotates, the second slide bar 13 connected thereto moves outward, reducing the wedge pressure between the second slide bar 13 and the first slide bar 11. Since the first slide bar 11 loses the thrust from the second slide bar 13, it will slide downward under the elastic force of the first spring 10, releasing the pressure on the fixing clamp 12. When the position of the first slide bar 11 changes, the fixing clamp 12 is no longer supported by the side wall of the first slide bar 11, and it detaches from the inner wall of the mounting groove 8, releasing the locked state. The connection between the support rod 4 and the beam frame 1 has been unlocked, and the support rod 4 can now be removed from the mounting groove 8, completing the disassembly process of the support device.

[0047] Reference Figure 1 and Figure 4 As shown, in some embodiments, it includes: side panels 2 and a top cover 3, the top cover 3 is fixedly connected to the top of the beam frame 1, and the side panels 2 are detachable and slidably connected to the sliding track inside the beam frame 1. The sliding connection design of the side panels 2 and the sliding track inside the beam frame 1 allows the side panels to be adjusted according to the specific conditions or needs of the working surface. This adjustability improves the adaptability of the device, enabling it to be effectively used in working surfaces of different sizes or shapes. The sliding side panels 2 can adjust the degree of opening and closing according to actual needs, which helps to control the spatial layout of the working surface, and can also adjust the ventilation volume to improve the air circulation conditions of the working environment. The top cover 3 covers the gap between the two side panels 2, ensuring the complete closure of the support device and forming a continuous protective barrier, which effectively prevents gravel or coal blocks from falling from the top and protects the safety of the workers below.

[0048] Reference Figure 4-Figure 5 As shown, in some embodiments, the beam frame 1 includes: a sliding rod 18, which is fixedly connected to the four inner edges of the beam frame 1; a slider 16 is provided on the sliding rod 18; a second spring 19 is sleeved on the sliding rod 18, and both ends are fixedly connected to the symmetrical sliders 16; the cooperation between the sliding rod 18 and the slider 16 ensures the smoothness and positioning accuracy of the side panel 2 during the sliding process, and the second spring 19 provides appropriate tension, so that the side panel 2 maintains a stable position when there is no external force and is not easy to move by itself.

[0049] The side panel 2 includes: a fixing block 21, which is fixedly connected to the side of the side panel 2 facing outward and is distributed along the length direction of the side panel 2; the fixing block 21 is fixedly connected to the side panel 2, thereby enhancing the rigidity of the side panel, so that when subjected to external impact or pressure, it can better maintain its shape and position, reduce deformation, and thus improve the stability of the entire support device.

[0050] Transmission rod 15 has one end pivotally connected to fixed block 21 on the side away from side panel 2. The other end of transmission rod 15 is pivotally connected to slider 16 on the side away from side panel 2. When side panel 2 is subjected to external forces, such as impact or pressure, the force is transmitted to one end of transmission rod 15 via fixed block 21 fixed to side panel 2. Through the principle of leverage, transmission rod 15 amplifies or redistributes the force transmitted from side panel 2, ensuring smooth and controllable movement of slider 16 on slide bar 18, reducing friction and loss during movement.

[0051] The fixed block 21 includes a damper 17 , which is rotatably connected to the interior of the fixed block 21 , and an output end of the damper 17 is fixedly connected to the coupling 20 ; the outer wall of the coupling 20 is rotatably connected to the interior of the slider 16 .

[0052] The connection between damper 17 and coupling 20 softens the force transmission process, avoiding hard collisions, reducing structural damage, and extending the service life of the support device. The rotational connection between coupling 20 and slider 16 allows the movement of transmission rod 15 to be more smoothly converted into movement of side panel 2, simplifying the operation process and improving work efficiency.

[0053] When the side panel 2 is impacted, the force is first transmitted to the transmission rod 15, which is rotatably connected to it, through the fixed block 21 fixed thereto. The force is then transmitted through the transmission rod 15 to the slider 16, which is rotatably connected to its other end, causing the slider 16 to begin sliding on the slide rod 18. The sliding of the slider 16 actually converts the impact force into sliding friction, thereby dissipating the impact energy. The damper 17, through its internal damping effect, can absorb and convert part of the impact energy into heat energy, slowing the sliding speed of the slider 16, thereby effectively reducing the speed and intensity of force transmission. During the sliding process of the slider 16, the second spring 19 is compressed and then gradually released when the force weakens. This compression and release process provides an additional cushioning effect, further absorbing and mitigating the impact force. When the sliders 16 on both sides move relative to each other on the slide rod 18, the forces they each bear will partially offset each other. This force balance helps to reduce the net impact force on the side panel 2, thereby protecting the side panel 2 and the entire support device from damage.

[0054] Reference Figure 2As shown, in some embodiments, pressure sensors 7 are fixed on both sides of the outer wall of the beam 1; the pressure sensors 7 can monitor the pressure borne by the beam 1 in real time and provide instant pressure data.

[0055] Alarm bell 6 is fixedly attached to the outer wall of beam frame 1. When pressure sensor 7 detects pressure exceeding a safety threshold, alarm bell 6 immediately activates and issues a warning signal. This provides timely warning to personnel, allowing them to quickly evacuate the danger zone or implement reinforcement measures to avoid potential roof collapse.

[0056] When the side panels 2 are subjected to abnormal pressure and thus press the beam frame 1, the pressure sensor 7 will detect the pressure change and then trigger the alarm light 5 to notify all on-site staff of the potential danger and prompt them to take evasive action quickly.

[0057] Reference Figure 2 and Figure 4 As shown, in some embodiments, it also includes:

[0058] Warning light 5, warning light 5 is fixedly connected to the outer wall of one side inside beam frame 1. The clearly visible warning light 5 can immediately attract attention in emergency situation, help staff to keep calm and quickly take necessary risk avoidance measures.

[0059] When pressure sensor 7 detects an abnormal pressure change, indicating that the support device is experiencing a load exceeding the safe range, alarm light 5 illuminates immediately, providing an immediate visual alert to personnel, ensuring prompt attention even in noisy environments. The flashing or continuous illumination of alarm light 5 ensures that even when the alarm bell's sound is masked, it still effectively alerts personnel to the danger, accelerating emergency response. The coordinated use of alarm light 5 and alarm bell 6 effectively combines visual and auditory signals, improving the reliability and effectiveness of early warnings and ensuring timely notification of personnel.

[0060] Reference Figure 1 As shown, in some embodiments, the beam frame 1 adopts a triangular frame structure, which is composed of multiple horizontal beams and vertical beams. The triangular frame structure performs well in bearing heavy loads and providing structural strength, can effectively disperse pressure, reduce the burden on individual nodes, and enhance overall stability.

[0061] Reference Figure 4 and Figure 5 As shown, in some embodiments, the damper 17 is a hydraulic damper or a gas damper with adjustable damping force.

[0062] The adjustable damping force allows damper 17 to be dynamically adjusted according to different operating conditions and requirements, helping to reduce vibration and oscillation of the side panels 2 during movement, thereby improving the structural stability and operational smoothness of the entire support system. Adjusting the damping force reduces impact and wear between the side panels 2 and other structural components, thereby extending the service life of the equipment and reducing maintenance costs. In the event of external impact or pressure, the adjustable damper 17 absorbs and disperses energy more quickly, reducing the impact on the side panels 2 and the entire support system, thereby protecting the safety of the equipment and personnel.

[0063] Reference Figure 1 and Figure 2 As shown, in some embodiments, the number of the pressure sensors 7 is at least two. Using at least two pressure sensors 7 can achieve more comprehensive pressure monitoring.

[0064] By arranging sensors at different positions of the beam 1, pressure changes in different directions can be monitored, providing more accurate data and ensuring that even if an individual sensor fails, other sensors can continue to work.

[0065] Reference Figure 1-3 As shown, in some embodiments, the beam 1 and the support rod 4 are fixed in a detachable manner. The detachable connection design makes the assembly and disassembly between the beam 1 and the support rod 4 faster, facilitating rapid adjustment of the support device in an emergency or maintenance and inspection during off-hours.

[0066] The detachable connection allows the beam frame 1 and support rod 4 to be replaced independently, improving the versatility and economy of the equipment. The separate design facilitates the transportation and storage of the beam frame 1 and support rod 4, reduces the space occupied, and is also convenient for handling in small or complex working environments.

[0067] According to the above technical features, the working principle of the temporary support device for coal mining working face provided by this application in actual application scenarios is as follows:

[0068] Mounting post 9 at the top of support rod 4 engages mounting slot 8 at the bottom of the beam frame. When threaded post 14 drives the second slide bar toward the inside of support rod 4, the interaction between the first wedge structure of second slide bar 13 and the second wedge structure of first slide bar 11 compresses first slide bar 11 against the support structure, creating a wedge-locking effect that maintains the tightness of the connection without the use of additional fasteners. Second slide bar 13 then pushes against first slide bar 11, moving it toward mounting post 9. A retaining clip 12 is pivotally connected to the side wall of mounting post 9. One end of retaining clip 12 presses against the side wall of first slide bar 11 and the other against the inner wall of mounting slot 8, locking mounting post 9 with mounting slot 8. To disassemble, threaded post 14 is rotated in the opposite direction, driving second slide bar 13 outward. First slide bar 11, acting under the action of first spring 10, slides downward, pushing retaining clip 12 back into place, releasing its pressure on the inner wall of mounting slot 8 and completing the unlocking process.

[0069] When side panel 2 is impacted, the force is transmitted to slider 16 via transmission rod 15, causing it to slide on slide bar 18. Damper 17 acts as a shock absorber during this process, absorbing some of the impact energy through its internal damping effect and slowing the sliding speed of slider 16. As sliders 16 on both sides move relative to each other on slide bar 18, the forces exerted on them partially offset each other, reducing the direct impact on side panel 2. Second spring 19 provides additional cushioning during this process, absorbing and mitigating the impact force between sliders 16 through its compression and release.

[0070] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application based on the several embodiments provided in the present application to obtain other embodiments, and these embodiments do not exceed the scope of protection of the present application.

[0071] The above specific implementation methods further explain in detail the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above are only specific implementation methods of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the scope of protection of the embodiments of the present application.

Claims

1. Temporary support device for coal mining working face, characterized in that: include: A supporting mechanism, wherein a protective mechanism is provided on the top of the supporting mechanism; The protection mechanism comprises: a beam frame (1), wherein four corners of the bottom of the beam frame (1) are provided with mounting grooves (8); The support mechanism comprises: a support rod (4), a mounting column (9) connected to the top of the support rod (4), and the mounting column (9) is embedded in the mounting groove (8); a threaded connection portion is provided on the top side wall of the support rod (4), and a threaded column (14) is connected to the support rod (4) through the threaded connection portion; A first slide bar (11) and a second slide bar (13), wherein the threaded column (14) is connected to one end of the second slide bar (13) near the inner side of the support bar (4); the other end of the second slide bar (13) has a first wedge-shaped structure; one end of the first slide bar (11) is located inside the mounting column (9), and the other end has a second wedge-shaped structure that is in sliding contact with the first wedge-shaped structure; when the threaded column (14) drives the second slide bar (13) to move toward the inner side of the support bar (4), the second slide bar (13) pushes against the first slide bar (11) and moves toward the mounting column (9); The side wall of the mounting column (9) is rotatably connected to a fixing clamp (12). When the threaded column (14) drives the second slide bar (13) to move toward the inside of the support bar (4), one end of the fixing clamp (12) abuts against the side wall of the first slide bar (11), and the other end abuts against the inner wall of the mounting groove (8), thereby locking the mounting column (9) and the mounting groove (8).

2. The temporary support device for coal mining working face according to claim 1, characterized in that: Also includes: A first spring (10), one end of the first spring (10) is fixedly connected to the inner wall of the mounting column (9), and the other end is fixedly connected to the top of the first slide rod (11).

3. The temporary support device for coal mining working face according to claim 1, characterized in that: Also includes: Side panels (2) and a top cover (3), wherein the top cover (3) is fixedly connected to the top of the beam frame (1), and the side panels (2) are detachable and slidably connected to a sliding track inside the beam frame (1).

4. The temporary support device for coal mining working face according to claim 3, characterized in that: The beam frame (1) comprises: a slide rod (18), the slide rod (18) being fixedly connected to the four edges inside the beam frame (1); a slider (16) being provided on the slide rod (18); a second spring (19) being sleeved on the slide rod (18), and having two ends fixedly connected to the symmetrical sliders (16); The side panel (2) comprises: a fixing block (21), the fixing block (21) being fixedly connected to a side of the side panel (2) facing outwards and distributed along the length direction of the side panel (2); A transmission rod (15), one end of the transmission rod (15) is rotatably connected to a side of the fixed block (21) away from the side plate (2); the other end of the transmission rod (15) is rotatably connected to a side of the slider (16) away from the side plate (2); The fixed block (21) includes a damper (17), the damper (17) is rotatably connected to the interior of the fixed block (21), and its output end is fixedly connected to the coupling (20); the outer wall of the coupling (20) is rotatably connected to the interior of the slider (16).

5. The temporary support device for coal mining working face according to claim 1, characterized in that: Also includes: A pressure sensor (7), the pressure sensor (7) being fixed on both sides of the outer wall of the beam frame (1); An alarm bell (6), wherein the alarm bell (6) is fixedly connected to one side of the outer wall of the beam frame (1).

6. The temporary support device for coal mining working face according to claim 5, characterized in that: Also includes: An alarm light (5) is fixedly connected to an outer wall on one side of the interior of the beam frame (1).

7. The temporary support device for coal mining working face according to claim 1, characterized in that: The beam frame (1) adopts a triangular frame structure and is composed of a plurality of horizontal beams and vertical beams.

8. The temporary support device for coal mining working face according to claim 4, characterized in that: The damper (17) is a hydraulic damper or a gas damper with adjustable damping force.

9. The temporary support device for coal mining working face according to claim 5, characterized in that: The number of the pressure sensors (7) is at least two.

10. The temporary support device for coal mining working face according to claim 1, characterized in that: The beam frame (1) and the support rod (4) are fixed in a detachable manner.

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