A coal impact-proof tunnel support device

Abstract

The present invention relates to the technical field of coal mine tunnel support, and discloses a coal anti-impact tunnel support device, including a support device body, and a shock-absorbing curve drawing mechanism is provided at the bottom of the support device body; in the present invention, when the coal impacts the tunnel and generates vibration, the vibration is transmitted to the support device body, and the support device body transmits the vibration to the shock-absorbing spring, while absorbing most of the vibration energy, the shock-absorbing spring reduces the rigid connection between the support device body and the inner wall of the tunnel, thereby effectively alleviating the impact of the vibration on the tunnel structure; when the shock-absorbing spring absorbs the vibration energy, the shock-absorbing spring drives the mounting plate to move up and down during the shock absorption, and the marker pen installed thereon draws the fluctuation curve generated by the vibration on the drawing paper ring, which not only intuitively records the vibration amplitude of the coal impacting the tunnel, but also facilitates the subsequent observation and analysis of the vibration characteristics of the tunnel.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine tunnel support, in particular to a coal impact-proof tunnel support device. Background Art

[0002] In the process of coal mine tunnel mining, tunnel support is one of the important links to ensure the safety of mine operations. The stability of the mine is directly related to the safety of the operators and the economic benefits of the mine. The main function of the tunnel support is to support the tunnel structure of the mine to prevent tunnel collapse, support failure and other possible disasters. However, with the deepening of coal mining and the expansion of scale, the coal impact ground pressure phenomenon has gradually become a serious safety hazard. Coal impact ground pressure is a sudden geological disaster caused by underground mining operations in coal mines, complex geological structures and stress concentration. When the stress of the stratum rock exceeds its bearing capacity during the mining process, it may cause the rock stratum to release violently and suddenly, thereby generating large vibrations and shock waves, forming coal impact ground pressure phenomenon. This phenomenon is often accompanied by severe earthquakes and stratum ruptures, causing deformation of the tunnel structure, damage to the support structure, and even severe It will lead to the collapse of the tunnel, posing a great threat to the life safety of mine workers.

[0003] In practice, traditional tunnel support devices mostly use rigid support structures. Although these structures have a certain bearing capacity, they often fail due to lack of shock absorption when encountering severe vibration or impact. At the same time, although some improved support devices have added shock-absorbing components, their shock-absorbing performance is single and cannot be dynamically adjusted according to changes in vibration intensity. In addition, most of the current support devices lack vibration monitoring and early warning functions, making it difficult to sense the impact intensity in time and remind staff to take countermeasures.

[0004] Therefore, we proposed a coal anti-impact tunnel support device to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a coal anti-shock tunnel support device to solve the problem raised in the above background technology that traditional tunnel support devices lack effective shock absorption and vibration monitoring, and are difficult to cope with severe impacts and timely warnings.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a coal anti-shock tunnel support device, comprising a support device body, a shock-absorbing curve drawing mechanism is provided at the bottom of the support device body, the shock-absorbing curve drawing mechanism comprises a mounting plate, a base, a shock-absorbing spring, a motor 1, a gear ring 1, a base, a marker pen, a magnetic attraction 1, a mounting ring and a drawing paper ring, the top end of the inner wall of the mounting plate is fixedly connected with a motor 1, the bottom end of the motor 1 is fixedly connected with a support arm, the bottom end of the mounting plate is fixedly connected with a mounting ring, the drawing paper ring is sleeved on the outer wall of the mounting ring, the bottom end of the magnetic attraction 1 is fixedly connected with a clamping seat, the bottom end of the clamping seat is snap-connected with a marker pen, one end of the marker pen is attached to the outer wall of the drawing paper ring, the inner wall of the mounting plate is provided with an annular slide groove, the inner wall of the annular slide groove is slidably connected with a magnetic attraction 2, and the magnetic attraction 1 is magnetically adsorbed and connected with the magnetic attraction 2; An early warning mechanism is provided at the bottom of the mounting plate, and the early warning mechanism includes an audible and visual alarm, a push-type power switch, an extension rod and a scale plate. The front side of the extension rod is fixedly connected to the scale plate, the middle part of the extension rod is vertically slidably connected to the bottom end of the mounting ring, and the audible and visual alarm is electrically connected to the push-type power switch.

[0007] Preferably, the bottom end of the support arm is rotatably connected to the inner wall of the bottom end of the mounting plate, the outer side of the clamping seat is fixedly connected to an extension plate, the inner wall of the extension plate is fixedly connected to a return spring, one end of the return spring is attached to the other end of the marker pen, and the top end of the clamping seat is slidably connected to the bottom end of the mounting plate.

[0008] Preferably, the bottom end of the pedestal is fixedly connected to the top end of the base, and the top end of the base is fixedly connected to a support plate.

[0009] Preferably, the top end of the support plate is rotatably connected to a threaded barrel, and the inner wall of the threaded barrel is threadedly connected to a screw.

[0010] Preferably, the top end of the screw rod is fixedly connected with a shock-absorbing spring, the top end of the shock-absorbing spring is fixedly connected to the bottom end of the mounting plate, the top end of the shock-absorbing spring is fixedly connected with a mounting seat, the top end of the mounting seat is fixedly connected to the bottom end of the mounting plate, and the outer wall fixing sleeve of the shock-absorbing spring is provided with a gear ring.

[0011] Preferably, the inner wall of the base is fixedly connected to the second motor, the top of the second motor is fixedly connected to the transmission seat, and the outer wall of the transmission seat is fixedly connected to the second gear ring.

[0012] Preferably, the bottom end of the gear ring 2 is rotatably connected to the top end of the base, and the gear ring 1 and the gear ring 2 are meshed with each other.

[0013] Preferably, a stabilizing nail is fixedly connected to the bottom end of the base, a telescopic rod is fixedly connected to the top end of the base, and a side wall of the free end of the telescopic rod is fixedly connected to a mounting ring via a support rod.

[0014] Preferably, a connecting seat is fixedly connected to the bottom end of the supporting device body, the bottom end of the connecting seat is fixedly connected to the top end of the mounting plate, and a reinforcing column is fixedly connected to the inner wall of the mounting plate.

[0015] Preferably, the bottom end of the push-type power switch is fixedly connected to the top end of the transmission seat, the inner wall of the support device body is fixedly connected to a reinforcing beam, and the sound and light alarm is fixedly connected to the outer wall of the reinforcing beam.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, by setting up a shock-absorbing curve drawing mechanism, the staff starts motor one in advance, and the output end of motor one drives the support arm to rotate, and the support arm can drive magnet one to slide and connect to the inner wall of the annular slide groove, and magnet one is magnetically adsorbed and connected to magnet two, and magnet two moves with magnet one. When the coal impacts the tunnel and generates vibration, the vibration is transmitted to the support device body, and the support device body transmits the vibration to the shock-absorbing spring. While absorbing most of the vibration energy, the shock-absorbing spring reduces the rigid connection between the support device body and the inner wall of the tunnel, thereby effectively alleviating the impact of the vibration on the tunnel structure. When the shock-absorbing spring absorbs the vibration energy, the shock-absorbing spring will drive the mounting plate to move up and down when absorbing the vibration, and the marker installed thereon will draw the fluctuation curve generated by the vibration on the drawing paper ring, which not only intuitively records the impact of the coal The vibration amplitude of the tunnel is also convenient for the subsequent observation and analysis of the vibration characteristics of the tunnel. At the same time, the drawn curve also reflects the shock-absorbing effect of the current support device body. When the curve has large twists and turns, it indicates that the shock-absorbing performance of the support device body may need to be adjusted. When the curve has large twists and turns, the staff can start motor two, and the output end of motor two drives the transmission seat to rotate. During the rotation of the transmission seat, it can drive gear ring two to rotate, and gear ring two engages gear ring one to rotate. When gear ring one rotates, it drives the threaded barrel to rotate. The screw is threadedly connected to the threaded barrel. When the threaded barrel rotates, the length of the screw can be adjusted accordingly, and the screw squeezes the shock-absorbing spring, thereby changing the stiffness and shock-absorbing performance of the spring, which can enable the support device body to dynamically adjust the shock-absorbing effect according to the vibration characteristics of different coal impact tunnels, thereby improving adaptability and practicality.

[0017] 2. In the present invention, by setting up an early warning mechanism, when the mounting plate vibrates too greatly, the mounting plate drives the mounting collar to descend, and the mounting collar drives the extension rod to descend, and when the extension rod descends, it squeezes the push-type power switch, and when the push-type power switch is triggered, the sound and light alarm is activated to alarm, which can promptly issue an early warning when the vibration amplitude exceeds the set threshold, effectively reminding the staff to pay attention to the potential impact of the vibration on the stability of the support device body, and reminding in advance the risks that the vibration may bring to the support device body, which helps to reduce equipment failures or tunnel damage caused by excessive vibration amplitude. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the front structure of a coal impact-proof tunnel support device proposed by the present invention; Figure 2 This is a schematic diagram of the upward structure of a coal impact prevention tunnel support device proposed by the present invention; Figure 3 A schematic diagram of the base structure of a coal impact prevention tunnel support device proposed by the present invention; Figure 4 A coal impact-proof tunnel support device proposed by the present invention Figure 3 Enlarged view of point A in the middle; Figure 5 This is a structural exploded view of the mounting plate portion of a coal impact-proof tunnel support device proposed by the present invention; Figure 6 A coal impact-proof tunnel support device proposed by the present invention Figure 5 Enlarged view of point B in the middle; Figure 7 A coal impact-proof tunnel support device proposed by the present invention Figure 5 Middle C shows the enlarged picture; Figure 8 A structural cross-sectional view of a base portion of a coal impact-proof tunnel support device proposed by the present invention; Fig. 9 A schematic structural diagram of a mounting plate portion of a coal impact-proof tunnel support device proposed by the present invention; Fig.10 A coal impact-proof tunnel support device proposed by the present invention Fig. 9 Enlarged view of point D in the middle.

[0019] In the figure: 1. Support device body; 2. Early warning mechanism; 201. Sound and light alarm; 202. Push-type power switch; 203. Extension rod; 204. Scale plate; 3. Reinforcement beam; 4. Connecting seat; 5. Shock absorption curve drawing mechanism; 501. Mounting plate; 502. Base; 503. Telescopic rod; 504. Support plate; 505. Gear ring 1; 506. Base; 507. Transmission seat; 508. Threaded cylinder; 509. shock-absorbing spring; 510. mounting seat; 511. mounting ring; 512. magnet one; 513. extension plate; 514. reset spring; 515. marker pen; 516. clamping seat; 517. drawing paper ring; 518. motor one; 519. support arm; 520. screw rod; 521. magnet two; 522. annular slide; 523. gear ring two; 524. motor two; 6. reinforcement column; 7. stabilizing nail. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figure 1 - Fig.10 , In this embodiment: a coal anti-shock tunnel support device includes a support device body 1, a shock-absorbing curve drawing mechanism 5 is provided at the bottom of the support device body 1, and the shock-absorbing curve drawing mechanism 5 includes a mounting plate 501, a base 502, a shock-absorbing spring 509, a motor 518, a gear ring 505, a base 506, a marker pen 515, a magnetic attraction 512, a mounting ring 511 and a drawing paper ring 517, and the top of the inner wall of the mounting plate 501 is fixedly connected with a motor 518, and the motor 51 The bottom end of the mounting plate 501 is fixedly connected with a support arm 519, a drawing paper ring 517 is sleeved on the outer wall of the mounting ring 511, a clamping seat 516 is fixedly connected with the bottom end of the magnetic attraction 1 512, a marker pen 515 is snap-connected with the bottom end of the clamping seat 516, one end of the marker pen 515 is attached to the outer wall of the drawing paper ring 517, an annular groove 522 is provided on the inner wall of the mounting plate 501, a magnetic attraction 2 521 is slidably connected to the inner wall of the annular groove 522, and the magnetic attraction 1 512 is magnetically adsorbed and connected to the magnetic attraction 2 521; Among the above components, it should be noted that motor 1 518 is a stepper motor, and its specific model is NEMA 17, which can drive the support arm 519 to move slowly, and the materials of magnetic attraction 1 512 and magnetic attraction 2 521 are both made of neodymium iron boron magnets, which have strong adsorption force, and the drawing paper ring 517 is waterproof paper, which is a disposable consumable. By adjusting the rotation speed of motor 1 518, the marker 515 can be slowly drawn on the drawing paper ring 517, and the surface of the drawing paper ring 517 is sprayed with scales, which can be used as a baseline to facilitate the staff to judge the amplitude.

[0022] Specifically, Figure 3 - Figure 6 As shown, the bottom end of the support arm 519 is rotatably connected to the inner wall of the bottom end of the mounting plate 501, the outer side of the clamping seat 516 is fixedly connected to the extension plate 513, the inner wall of the extension plate 513 is fixedly connected to the return spring 514, one end of the return spring 514 is attached to the other end of the marker 515, the top end of the clamping seat 516 is slidably connected to the bottom end of the mounting plate 501, the bottom end of the base 506 is fixedly connected to the top end of the base 502, and the top end of the base 502 is fixedly connected to the support plate 504.

[0023] Among the above components, the return spring 514 can push one end of the marker pen 515 to always maintain contact with the drawing paper ring 517, thereby ensuring that the marker pen 515 is always in stable contact with the drawing paper ring 517 during the entire drawing process, avoiding pen breakage or excessive shaking, and improving the drawing effect and accuracy. The extension plate 513 is used to provide a support position for the return spring 514.

[0024] Specifically, Figure 3-5 and Figure 7-9 As shown, the top of the support plate 504 is rotatably connected to a threaded tube 508, the inner wall of the threaded tube 508 is threadedly connected to a screw 520, the top of the screw 520 is fixedly connected to a shock-absorbing spring 509, the top of the shock-absorbing spring 509 is fixedly connected to the bottom end of the mounting plate 501, the top of the shock-absorbing spring 509 is fixedly connected to a mounting seat 510, the top of the mounting seat 510 is fixedly connected to the bottom end of the mounting plate 501, and the outer wall of the shock-absorbing spring 509 is fixedly sleeved with a gear ring 505.

[0025] In the above components, it is ensured that the screw 520 can move smoothly along the axis of the threaded barrel 508 when rotating. The length of the screw 520 is adjusted by rotating the threaded barrel 508. When the tunnel is impacted or vibrated, the shock-absorbing spring 509 absorbs external impact or vibration and converts the vibration energy into elastic deformation to achieve a shock-absorbing effect. By adjusting the length of the screw 520, the compression state of the shock-absorbing spring 509 can be changed, thereby achieving dynamic adaptation and control of the vibration amplitude.

[0026] Specifically, Figure 7 - Fig. 9 As shown, the inner wall of the base 506 is fixedly connected to the motor 2 524, the top of the motor 2 524 is fixedly connected to the transmission base 507, the outer wall of the transmission base 507 is fixedly connected to the gear ring 2 523, the bottom end of the gear ring 2 523 is rotatably connected to the top of the base 506, and the gear ring 1 505 and the gear ring 2 523 are meshed with each other.

[0027] In the above-mentioned components, when the motor 2 524 rotates, the transmission seat 507 can be driven to rotate, and the transmission seat 507 rotates together with the gear ring 2 523. During the rotation of the gear ring 2 523, the gear ring 1 505 can be driven to rotate. The gear ring 1 505 and the gear ring 2 523 are meshed with each other. Through the gear transmission method, the rotation of the gear ring 2 523 can drive the rotation of the gear ring 1 505. The gear ring 1 505 is connected to the threaded barrel 508. The rotation of the gear ring 1 505 directly drives the threaded barrel 508 to rotate. The rotation of the threaded barrel 508 causes the screw 520 threadedly connected to its inner wall to move axially, thereby changing the length of the screw 520. By adjusting the length of the screw 520, the compression degree of the shock-absorbing spring 509 can be changed, thereby adjusting the stiffness and shock-absorbing performance of the spring to adapt to different vibration intensities and impacts.

[0028] Embodiment 2: This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 2 - Figure 4 , In this embodiment: an early warning mechanism 2 is provided at the bottom of the mounting plate 501, and the early warning mechanism 2 includes an audible and visual alarm 201, a push-type power switch 202, an extension rod 203 and a scale plate 204. The front side of the extension rod 203 is fixedly connected to the scale plate 204, and the middle part of the extension rod 203 is vertically slidably connected to the bottom end of the mounting ring 511, and the audible and visual alarm 201 is electrically connected to the push-type power switch 202.

[0029] Among the above components, the sliding connection between the extension rod 203 and the mounting collar 511 has a large damping, which is not adjusted manually and will not change itself.

[0030] Specifically, Figure 1 - Figure 5 As shown, the bottom end of the base 502 is fixedly connected with a stabilizing nail 7, the top end of the base 502 is fixedly connected with a telescopic rod 503, the side wall of the free end of the telescopic rod 503 is fixedly connected with the mounting ring 511 through a support rod, the bottom end of the support device body 1 is fixedly connected with a connecting seat 4, the bottom end of the connecting seat 4 is fixedly connected with the top end of the mounting plate 501, and the inner wall of the mounting plate 501 is fixedly connected with a reinforcing column 6.

[0031] Among the above-mentioned components, the function of the stabilizing nail 7 is to ensure that the base 502 is firmly fixed on the ground of the tunnel during the installation process. When installing, the staff needs to insert the stabilizing nail 7 into the ground of the tunnel, which can enhance the stability of the base 502 and prevent it from shifting or becoming unstable during use, thereby ensuring the safety and reliability of the support device body 1. The telescopic rod 503 can adjust the length and the mounting ring 511 can be placed at different heights. When the mounting plate 501 moves up and down, the telescopic rod 503 is at a relatively stable height. Multiple components of the mounting plate 501 can enable the marker 515 to move on the outer wall of the drawing paper ring 517, thereby obtaining a shock-absorbing curve. The reinforcement column 6 is used to increase the strength and stability of the mounting plate 501 to prevent deformation under vibration or external force.

[0032] Specifically, Figure 1-2 and Figure 5 As shown, the bottom end of the push-type power switch 202 is fixedly connected to the top end of the transmission seat 507, the inner wall of the supporting device body 1 is fixedly connected with the reinforcing beam 3, and the sound and light alarm 201 is fixedly connected to the outer wall of the reinforcing beam 3.

[0033] Among the above-mentioned components, the specific model of the push-type power switch 202 is Omron D2HW, and the specific model of the sound and light alarm 201 is PATLITE LE. The push-type power switch 202 can be triggered when squeezed, thereby starting the sound and light alarm 201 to sound an alarm. The sound and light alarm 201 can immediately emit a sound and light signal after receiving the trigger signal of the push switch, reminding the staff to pay attention to possible problems or abnormal conditions of the equipment. The brightness and loudness of the sound and light alarm 201 can effectively attract the attention of the operator, ensuring that the alarm signal can be detected in time even in a noisy mine environment. The reinforced beam 3 can enhance the structural stability and seismic resistance of the supporting device body 1.

[0034] Working principle: the staff needs to insert the stabilizing nail 7 into the ground of the tunnel, which can enhance the stability of the base 502 and prevent it from shifting or becoming unstable during use, thereby ensuring the safety and reliability of the support device body 1. The staff starts the motor 1 518 in advance, and the output end of the motor 1 518 drives the support arm 519 to rotate. The support arm 519 can drive the magnetic suction 1 512 to slide and connect to the inner wall of the annular slide groove 522. The magnetic suction 1 512 is magnetically connected to the magnetic suction 2 521, and the magnetic suction 2 521 moves with the magnetic suction 1 512. When the coal impacts the tunnel and generates vibration, the vibration is transmitted to the support device body 1, and the support device body 1 transmits the vibration to the shock-absorbing spring 509. The shock-absorbing spring 509 absorbs most of the vibration energy while reducing the vibration. The rigid connection between the supporting device body 1 and the inner wall of the tunnel is reduced, thereby effectively alleviating the impact of vibration on the tunnel structure. When the shock-absorbing spring 509 absorbs the vibration energy, the shock-absorbing spring 509 will drive the mounting plate 501 to move up and down during the shock absorption. The marker pen 515 installed thereon will draw the fluctuation curve generated by the vibration on the drawing paper ring 517, which not only intuitively records the vibration amplitude of the coal impacting the tunnel, but also facilitates the subsequent observation and analysis of the vibration characteristics of the tunnel. At the same time, the drawn curve also reflects the shock-absorbing effect of the current supporting device body 1. When the curve has large twists and turns, it indicates that the shock-absorbing performance of the supporting device body 1 may need to be adjusted. During the movement of the marker pen 515, the reset spring 514 can push one end of the marker pen 515 to always keep it close to the drawing paper ring 517. The contact of the ring 517 ensures that the marker pen 515 is always in stable contact with the drawing paper ring 517 during the entire drawing process, avoiding pen breakage or excessive shaking, and improving the drawing effect and accuracy. When the curve has large twists and turns, the staff can start the motor 2 524, and the output end of the motor 2 524 drives the transmission seat 507 to rotate. During the rotation of the transmission seat 507, the gear ring 2 523 can be driven to rotate, and the gear ring 2 523 meshes with the gear ring 1 505 to rotate. When the gear ring 1 505 rotates, it drives the threaded barrel 508 to rotate. The screw rod 520 is threadedly connected with the threaded barrel 508. When the threaded barrel 508 rotates, the length of the screw rod 520 can be adjusted accordingly, and the screw rod 520 squeezes the shock-absorbing spring 509, thereby changing the stiffness and shock-absorbing performance of the spring, which can make the support device The main body 1 can dynamically adjust the shock absorption effect according to the vibration characteristics of different coal impact tunnels, thereby improving adaptability and practicality. When the mounting plate 501 vibrates too much, the mounting plate 501 drives the mounting collar 511 to descend, and the mounting collar 511 drives the extension rod 203 to descend. When the extension rod 203 descends, it squeezes the push-type power switch 202. When the push-type power switch 202 is triggered, the sound and light alarm 201 is activated to alarm, and it can issue an early warning when the vibration amplitude exceeds the set threshold, effectively reminding the staff to pay attention to the potential impact of the vibration on the stability of the support device main body 1, and reminding the risk that the vibration may bring to the support device main body 1 in advance, which is helpful to reduce the failure of the support device main body 1 or the damage to the tunnel caused by excessive vibration amplitude.The staff can adjust the length of the extension rod 203 according to the environment of the coal impact tunnel. When adjusting its length, the base 506 can be used as a reference, and the length of the extension rod 203 can be adjusted by observing the scale plate 204.

[0035] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0036] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A coal anti-shock tunnel support device, comprising a support device body (1), characterized in that: A shock-absorbing curve drawing mechanism (5) is provided at the bottom of the support device body (1), and the shock-absorbing curve drawing mechanism (5) comprises a mounting plate (501), a base (502), a shock-absorbing spring (509), a motor (518), a gear ring (505), a base (506), a marker pen (515), a magnetic attraction (512), a mounting ring (511), and a drawing paper ring (517), wherein the top end of the inner wall of the mounting plate (501) is fixedly connected to the motor (518), and the bottom end of the motor (518) is fixedly connected to the support arm (519). The drawing paper ring (517) is sleeved on the outer wall of the mounting ring (511); the bottom end of the magnetic attraction 1 (512) is fixedly connected to a clamping seat (516); the bottom end of the clamping seat (516) is snap-connected to a marker pen (515); one end of the marker pen (515) is attached to the outer wall of the drawing paper ring (517); an annular groove (522) is provided on the inner wall of the mounting plate (501); the inner wall of the annular groove (522) is slidably connected to the magnetic attraction 2 (521); the magnetic attraction 1 (512) and the magnetic attraction 2 (521) are magnetically adsorbed and connected; An early warning mechanism (2) is provided at the bottom of the mounting plate (501), the early warning mechanism (2) comprising an audible and visual alarm (201), a push-type power switch (202), an extension rod (203) and a scale plate (204), the front side of the extension rod (203) being fixedly connected to the scale plate (204), the middle portion of the extension rod (203) being vertically slidably connected to the bottom end of the mounting ring (511), and the audible and visual alarm (201) being electrically connected to the push-type power switch (202).

2. A coal impact-proof tunnel support device according to claim 1, characterized in that: The bottom end of the support arm (519) is rotatably connected to the inner wall of the bottom end of the mounting plate (501); the outer side of the clamping seat (516) is fixedly connected to an extension plate (513); the inner wall of the extension plate (513) is fixedly connected to a return spring (514); one end of the return spring (514) is attached to the other end of the marker pen (515); and the top end of the clamping seat (516) is slidably connected to the bottom end of the mounting plate (501).

3. A coal impact-proof tunnel support device according to claim 2, characterized in that: The bottom end of the base (506) is fixedly connected to the top end of the base (502), and the top end of the base (502) is fixedly connected to a support plate (504).

4. A coal impact-proof tunnel support device according to claim 1, characterized in that: The top end of the support plate (504) is rotatably connected to a threaded barrel (508), and the inner wall of the threaded barrel (508) is threadably connected to a screw rod (520).

5. A coal impact-proof tunnel support device according to claim 4, characterized in that: The top end of the screw rod (520) is fixedly connected to a shock absorbing spring (509), the top end of the shock absorbing spring (509) is fixedly connected to the bottom end of the mounting plate (501), the top end of the shock absorbing spring (509) is fixedly connected to a mounting seat (510), the top end of the mounting seat (510) is fixedly connected to the bottom end of the mounting plate (501), and the outer wall of the shock absorbing spring (509) is fixedly sleeved with a gear ring 1 (505).

6. A coal impact-proof tunnel support device according to claim 1, characterized in that: The inner wall of the base (506) is fixedly connected to a second motor (524), the top of the second motor (524) is fixedly connected to a transmission seat (507), and the outer wall of the transmission seat (507) is fixedly connected to a second gear ring (523).

7. A coal impact-proof tunnel support device according to claim 1, characterized in that: The bottom end of the second gear ring (523) is rotatably connected to the top end of the base (506), and the first gear ring (505) and the second gear ring (523) are meshed with each other.

8. The coal impact-proof tunnel support device according to claim 1, characterized in that: The bottom end of the base (502) is fixedly connected to a stabilizing nail (7), the top end of the base (502) is fixedly connected to a telescopic rod (503), and the side wall of the free end of the telescopic rod (503) is fixedly connected to a mounting ring (511) via a support rod.

9. The coal impact-proof tunnel support device according to claim 1, characterized in that: The bottom end of the support device body (1) is fixedly connected to a connection seat (4), the bottom end of the connection seat (4) is fixedly connected to the top end of the mounting plate (501), and the inner wall of the mounting plate (501) is fixedly connected to a reinforcement column (6).

10. The coal impact-proof tunnel support device according to claim 1, characterized in that: The bottom end of the push-type power switch (202) is fixedly connected to the top end of the transmission seat (507), the inner wall of the support device body (1) is fixedly connected to a reinforcing crossbeam (3), and the sound and light alarm (201) is fixedly connected to the outer wall of the reinforcing crossbeam (3).

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