Underground alarm device

Abstract

The utility model discloses an underground alarm device which comprises a base, a machine body, a protective shell, a damping plate and a first elastic piece, the machine body is arranged above the base, and the machine body is provided with a monitoring sensor used for monitoring set parameters; the protective shell is detachably assembled on the base and covers the peripheral side of the machine body, and the damping plate is assembled on the top side of the protective shell in a sliding mode and covers the upper portion of the machine body; the first elastic piece is arranged between the protective shell and the damping plate, and the first elastic piece is used for buffering the impact of the damping plate on the protective shell after foreign matters fall onto the damping plate. The underground alarm device is good in self-protection performance, the situation that damage is easily caused by falling of foreign matter such as broken stones is avoided, and use stability is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of alarm, and particularly to an underground alarm device. Background Art

[0002] At present, when working underground, when staff encounter unexpected situations, such as fires, etc., an alarm device is required to give an alarm. However, the current 5G alarm device is simply fixed underground. When situations such as falling rocks occur, it is very easy to damage the device, resulting in damage to its internal parts, thus unable to perform accurate detection and alarm, seriously affecting its alarm function, and having low practicability and operational reliability. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems in the related art to a certain extent.

[0004] Therefore, an embodiment of the utility model provides an underground alarm device, which has good self-protection, avoids the situation that falling foreign objects such as broken stones are easily damaged, and ensures the stability of use.

[0005] The underground alarm device of the embodiment of the utility model includes:

[0006] A base;

[0007] A body, the body is arranged above the base, and the body is provided with a monitoring sensor for monitoring set parameters;

[0008] A protective shell and a shock-absorbing plate, the protective shell is detachably assembled on the base and covers the outer peripheral side of the body, and the shock-absorbing plate is slidably assembled on the top side of the protective shell and blocks above the body;

[0009] A first elastic member, the first elastic member is arranged between the protective shell and the shock-absorbing plate, and the first elastic member is used for buffering the impact of the shock-absorbing plate on the protective shell after a foreign object falls on the shock-absorbing plate.

[0010] In some embodiments, a sliding groove is provided at the top of the protective shell, the sliding groove extends in the up and down direction, the shock-absorbing plate is provided with a sliding block, and the sliding block is slidably assembled in the sliding groove in the up and down direction, and the first elastic member is arranged between the sliding block and the protective shell.

[0011] In some embodiments, a fixed column is provided in the sliding groove, the fixed column extends in the up and down direction, both the sliding block and the first elastic member are sleeved on the outer peripheral side of the fixed column, and the first elastic member is located below the sliding block.

[0012] In some embodiments, an inward flanging is provided at the bottom of the protective shell, and an assembly groove is provided on the base. The inward flanging and the assembly groove are both horizontally arranged, and the inward flanging is fitted into the assembly groove and can slide along the extending direction of the assembly groove.

[0013] In some embodiments, positioning holes are provided on the top side of the inward flanging, and sliding beads are movably assembled on the top side wall of the assembly groove. The sliding beads can move up and down relative to the base, and the sliding beads are used to be embedded in the positioning holes to realize the limit constraint on the protective shell.

[0014] In some embodiments, a clamping groove communicating with the assembly groove is provided on the base. A second elastic member and a movable block are assembled in the clamping groove. The movable block is in limit fit in the clamping groove. The sliding bead is fixedly connected to the movable block. The second elastic member acts between the base and the movable block and is used to press the sliding bead into the positioning hole.

[0015] In some embodiments, an alarm lamp is included. The monitoring sensor is electrically connected to the alarm lamp. A connecting block is provided below the base. An installation groove is provided on the bottom side of the connecting block. The alarm lamp is detachably assembled in the installation groove.

[0016] In some embodiments, a connecting member is included. The connecting block is provided with an installation hole. The connecting member includes a threaded block, a limiting block and a rotating block. The limiting block is in limit fit in the installation hole and is connected between the threaded block and the rotating block. The threaded block extends out from the inner hole opening of the installation hole and is in threaded assembly with the alarm lamp. The rotating block extends out from the outer hole opening of the installation hole and is used to drive the connecting member to rotate.

[0017] In some embodiments, a mounting plate is included. The mounting plate is fixed to one side of the base and is arranged at an interval from the machine body in the horizontal direction. The mounting plate is assembled with a plurality of fasteners for mounting and fixing the mounting plate.

[0018] In some embodiments, there are a plurality of monitoring sensors. The plurality of monitoring sensors include a smoke sensor and a temperature sensor.

[0019] Advantageous effects: The downhole alarm device in the embodiment of the present utility model has good self-protection performance, avoids the situation that the falling of foreign objects such as broken stones is likely to cause damage, and ensures the stability of use. Description of the Drawings

[0020] Figure 1 is a three-dimensional schematic diagram of the overall structure of the downhole alarm device in the embodiment of the present utility model.

[0021] Figure 2 is Figure 1Longitudinal sectional view schematic diagram of the underground alarm device.

[0022] Figure 3 is Figure 2 Partial enlarged view schematic diagram at location A in

[0023] Figure 4 Layout schematic diagram of the base, body, and mounting plate of the underground alarm device according to an embodiment of the present invention.

[0024] Reference numerals:

[0025] 1. Body; 2. Smoke sensor; 3. Temperature sensor; 4. Base; 5. Protective shell; 6. Positioning hole; 7. Slide bead; 8. Movable block; 9. Second elastic member; 10. Shock-absorbing plate; 11. Sliding groove; 12. Sliding block; 13. Fixed column; 14. First elastic member; 15. Connecting block; 16. Alarm lamp; 17. Rotating block; 18. Limiting block; 19. Threaded block; 20. Threaded groove; 21. Mounting plate; 22. Fastener. Detailed implementation manners

[0026] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0027] As Figure 1 and Figure 2 shown, the underground alarm device according to an embodiment of the present invention includes a body 1, a base 4, a protective shell 5, a shock-absorbing plate 10, and a first elastic member 14.

[0028] The base 4 can be in a flat plate shape and can be horizontally arranged. The body 1 is disposed above the base 4. For example, the body 1 can be fixed above the base 4 by means of screw fixation, snap fixation, etc., and the body 1 is provided with monitoring sensors for monitoring set parameters. For example, the monitoring sensors can be a temperature sensor 3, a humidity sensor, a smoke sensor, etc. At this time, the corresponding set parameters are temperature, humidity, smoke concentration, etc.

[0029] The protective shell 5 is detachably assembled to the base 4 and covers the outer peripheral side of the body 1. The shock-absorbing plate 10 is slidably assembled on the top side of the protective shell 5 and shields above the body 1. For example, as Figure 1 and Figure 2 shown, the protective shell 5 can be fixed above the base 4 by means of snaps, screws, etc., and the above-mentioned body 1 is covered inside the protective shell 5, so as to achieve shielding protection for the body 1.

[0030] It should be noted that the top side of the protective shell 5 can be open, and the shock-absorbing plate 10 can be slidably assembled above the protective shell 5. For example, one of the shock-absorbing plate 10 and the protective shell 5 can be provided with a slide rail, and the other can be slidably assembled with the slide rail, so that the shock-absorbing plate 10 can move up and down relative to the protective shell 5.

[0031] The first elastic member 14 is disposed between the protective shell 5 and the shock-absorbing plate 10, and the first elastic member 14 is used to buffer the impact of the shock-absorbing plate 10 on the protective shell 5 after a foreign object falls onto the shock-absorbing plate 10. For example, the first elastic member 14 can be a spring, and the first elastic member 14 can be assembled between the protective shell 5 and the shock-absorbing plate 10. The first elastic member 14 extends along the up-and-down direction and abuts between the shock-absorbing plate 10 and the protective shell 5.

[0032] During use, the base 4 can be directly connected to the side wall of the roadway, etc. The above-mentioned monitoring sensors can be used to monitor the set parameters in the roadway in real time, and the monitoring information can be transmitted to the cloud, terminal, etc. through a wireless module such as 5G, so as to meet the use requirements of real-time alarm monitoring.

[0033] When foreign objects such as gravel fall in the roadway, the foreign objects may first fall on the shock-absorbing plate 10. At this time, the shock-absorbing plate 10 will move down, and the first elastic member 14 will be compressed and store energy, so as to buffer the impact of the foreign object and avoid the situation that directly falling on the body 1 is likely to damage the monitoring sensors, etc., ensuring the stability of use.

[0034] In some embodiments, a sliding groove 11 is provided at the top of the protective shell 5. The sliding groove 11 extends along the up-and-down direction. The shock-absorbing plate 10 is provided with a sliding block 12, and the sliding block 12 is slidably assembled in the sliding groove 11 along the up-and-down direction. The first elastic member 14 is disposed between the sliding block 12 and the protective shell 5.

[0035] For example, as Figure 2 shown, sliding grooves 11 can be provided on both the left side wall and the right side wall of the protective shell 5. The sliding grooves 11 can extend along the up-and-down direction and are located inside the corresponding side walls of the protective shell 5. Sliding blocks 12 can be integrally formed on both the left side and the right side of the shock-absorbing plate 10. The sliding block 12 on the left side of the shock-absorbing plate 10 can be slidably engaged in the sliding groove 11 on the left side wall of the protective shell 5, and the sliding block 12 on the right side of the shock-absorbing plate 10 can be slidably engaged in the sliding groove 11 on the right side wall of the protective shell 5.

[0036] The above-mentioned first elastic member 14 can be assembled between each sliding block 12 and the bottom wall of the corresponding sliding groove 11. During use, the first elastic member 14 can directly act on the corresponding sliding block 12, and thus the buffering of the shock-absorbing plate 10 can be realized.

[0037] In some embodiments, a fixing post 13 is provided in the sliding groove 11. The fixing post 13 extends in the vertical direction. Both the sliding block 12 and the first elastic member 14 are sleeved on the outer peripheral side of the fixing post 13, and the first elastic member 14 is located below the sliding block 12.

[0038] For example, as Figure 2 shown, the fixing post 13 can be integrally formed on the protective shell 5, and the fixing post 13 can be integrally formed on both the left side wall and the right side wall of the protective shell 5. The fixing post 13 can be a cylinder. A through hole can be provided on the sliding block 12, and the first elastic member 14 can be sleeved on the outer peripheral side of the fixing post 13, and the fixing post 13 can pass through the through hole on the sliding block 12. Thus, the structural stability of the assembly of the shock-absorbing plate 10 and the first elastic member 14 is ensured, and the situation of random movement in the horizontal direction is avoided.

[0039] It should be noted that a stop structure can be provided at the top end of the fixing post 13. The stop structure can be a stop block or the like. By means of the stop structure, the situation that the shock-absorbing plate 10 slips out of the fixing post 13 can be avoided.

[0040] In some embodiments, an inward flange is provided at the bottom of the protective shell 5, and the base 4 is provided with an assembly groove. The inward flange and the assembly groove are both horizontally arranged, and the inward flange is fitted in the assembly groove and can slide along the extending direction of the assembly groove.

[0041] For example, as Figure 2 and Figure 3 shown, inward flanges can be integrally formed on both the left side wall and the right side wall of the bottom of the protective shell 5. The inward flange on the left side wall can be folded to the right, and the inward flange on the right side wall can be folded to the left. An assembly groove can be provided on both the left and right sides of the base 4. The assembly groove can be a rectangular groove, and the assembly groove can extend in the front-rear direction.

[0042] During assembly, the two inward flanges of the protective shell 5 can be respectively slidably assembled into the corresponding assembly grooves, so that the connection between the protective shell 5 and the base 4 can withstand a large vertical impact force. Secondly, the assembly method of the protective shell 5 and the base 4 is also simplified.

[0043] In some embodiments, a positioning hole 6 is provided on the top side of the inward flange. For example, as Figure 3 shown, two positioning holes 6 can be provided on the top side of each inward flange. The two positioning holes 6 can be arranged at intervals in the front-rear direction, and the positioning hole 6 can be a semi-circular hole. In some other embodiments, one, three, four or other numbers of positioning holes 6 can also be provided on the top side of each inward flange.

[0044] As Figure 3As shown, sliding beads 7 are movably assembled on the top side wall of the assembly groove. The number of sliding beads 7 is the same as the number of positioning holes 6, and the distance between two adjacent sliding beads 7 in the front - rear direction is also the same as the distance between the two adjacent positioning holes 6. The sliding beads 7 can move up and down relative to the base 4, and the sliding beads 7 are used to be embedded in the positioning holes 6 to realize the limit constraint on the protective shell 5.

[0045] Specifically, when assembling the protective shell 5 and the base 4, as the inner flanging slides into the corresponding assembly groove, the sliding beads 7 will be pushed into the base 4 under the pressure of the inner flanging. When the positioning hole 6 on the inner flanging is directly opposite to the corresponding sliding bead 7 in the up - down direction, the sliding bead 7 can move downward by itself and be embedded in the corresponding positioning hole 6. By the mutual blocking between the sliding bead 7 and the hole wall of the positioning hole 6, the assembly positioning of the protective shell 5 and the base 4 can be realized.

[0046] In some embodiments, the base 4 is provided with a card slot communicating with the assembly groove. A second elastic member 9 and a movable block 8 are assembled in the card slot. The movable block 8 is limited and fitted in the card slot. The sliding bead 7 is fixedly connected to the movable block 8. The second elastic member 9 acts between the base 4 and the movable block 8 and is used to press the sliding bead 7 into the positioning hole 6.

[0047] For example, as Figure 3 shown, the card slot is arranged above the assembly groove, and the notch of the card slot faces downward and communicates with the assembly groove. The movable block 8 can be a rectangular plate. The movable block 8 can be slidably assembled in the card slot and can move up and down along the depth direction of the card slot. And the movable block 8 can be fixed above the sliding bead 7 by welding, integral molding, etc. It should be noted that the upper surface of the sliding bead 7 can be a plane, and the movable block 8 is fixedly connected to the upper surface of the sliding bead 7.

[0048] The notch of the card slot can be a constricted opening. The movable block 8 can be blocked and limited at the notch of the card slot, thus avoiding the situation that the movable block 8 comes out of the notch of the card slot. The above - mentioned second elastic member 9 can be a spring. The second elastic member 9 can be located above the movable block 8 and abut between the movable block 8 and the bottom wall of the card slot. In use, the movable block 8 and the sliding bead 7 can move downward by themselves under the action of the second elastic member 9, so as to ensure the stability of the cooperation between the sliding bead 7 and the positioning hole 6.

[0049] In some embodiments, the downhole alarm device includes an alarm lamp 16. The monitoring sensor is electrically connected to the alarm lamp 16. A connecting block 15 is provided below the base 4. An installation groove is provided on the bottom side of the connecting block 15. The alarm lamp 16 is detachably assembled in the installation groove.

[0050] For example, as Figure 2As shown, a connecting block 15 can be integrally formed at the bottom of the base 4. The connecting block 15 can be in the shape of a square as a whole. An installation groove can be provided on the bottom wall of the connecting block 15, and the notch of the installation groove can be arranged downward. The alarm lamp 16 can be inserted into the installation groove, and the alarm lamp 16 can be connected to the connecting block 15 by means such as screw fixation and snap fixation, thus ensuring the structural stability of the assembly.

[0051] Secondly, each of the above monitoring sensors can be electrically connected to the alarm lamp 16 through a wire or a wireless module, etc. When the information monitored by the monitoring sensor is abnormal, the alarm lamp 16 will be lit, thus playing a role of timely alarm. In some other embodiments, the alarm lamp 16 can also be a buzzer, etc., that is, the alarm can also emit an alarm sound while generating a color change.

[0052] In some embodiments, the underground alarm device includes a connecting member. The connecting block 15 is provided with an installation hole. The connecting member includes a threaded block 19, a limiting block 18, and a rotating block 17. The limiting block 18 is in limiting fit in the installation hole and is connected between the threaded block 19 and the rotating block 17. The threaded block 19 extends out from the inner hole of the installation hole and is threadedly assembled with the alarm lamp 16. The rotating block 17 extends out from the outer hole of the installation hole and is used to drive the connecting member to rotate.

[0053] For example, as Figure 2 shown, there can be two installation holes. The two installation holes can be respectively arranged on the left and right sides of the installation groove and are both communicated with the installation groove, and both of the two installation holes can extend along the left - right direction and penetrate through the corresponding part of the connecting block 15. There can be two connecting members, and the two connecting members can be respectively assembled in the corresponding installation holes.

[0054] For example, as Figure 2 shown, each connecting member can include three parts: a threaded block 19, a limiting block 18, and a rotating block 17. Among them, the threaded block 19 can be regarded as a stud, and the shape of the rotating block 17 can be a nail - like structure. The limiting block 18 can be a plate - like structure and can be integrally formed and connected between the threaded block 19 and the rotating block 17. The left and right side holes of the installation hole can both be reduced - diameter structures, and the limiting block 18 can be blocked by the reduced - diameter structure, thus avoiding the situation where the connecting member comes out of the installation hole.

[0055] As Figure 2 shown, a threaded groove 20 can be provided on the alarm lamp 16. After the alarm lamp 16 is inserted into the installation groove, the rotating block 17 can be manually rotated. At this time, the threaded block 19 can be threadedly assembled into the corresponding threaded groove 20, thus realizing the installation and fixation of the alarm lamp 16.

[0056] In some embodiments, the downhole alarm device includes a mounting plate 21. The mounting plate 21 is fixed to one side of the base 4 and is arranged at an interval from the body 1 in the horizontal direction. The mounting plate 21 is equipped with a plurality of fasteners 22 for mounting and fixing the mounting plate 21.

[0057] For example, as Figure 4 shown, the mounting plate 21 can be in the shape of a flat plate. The mounting plate 21 can be fixed to the rear side of the base 4 and is vertically arranged in the up-down direction. One assembly hole can be respectively provided at the four corners of the mounting plate 21. Each assembly hole can penetrate through the mounting plate 21 along the front-back direction. And a fastener 22 such as a bolt or a stud can be threadedly assembled in each assembly hole. By means of the assembled fasteners 22, the mounting plate 21 can be connected and fixed to the side wall of the roadway, etc., thus facilitating the installation and fixation of the downhole alarm device.

[0058] In some embodiments, there are multiple monitoring sensors. The multiple monitoring sensors include a smoke sensor and a temperature sensor 3. Specifically, as Figure 4 shown, there can be only two monitoring sensors. The two are respectively a smoke sensor and a temperature sensor 3. The smoke sensor and the temperature sensor 3 can both be arranged on the front side of the body 1, and the smoke sensor can be located above the temperature sensor 3.

[0059] A specific example of the downhole alarm device of the present utility model will be described below.

[0060] Please refer to Figures 1 to 4 , the downhole alarm device in this example is a downhole 5G alarm device, which includes a body 1. A smoke sensor 2 is arranged on the outer surface of the body 1. A temperature sensor 3 is arranged on the outer surface of the body 1. The lower surface of the body 1 is fixedly connected to a base 4. A protective shell 5 is slidably connected to the side surface of the base 4 to protect the body 1 and prevent falling rocks in the well from damaging it.

[0061] A positioning hole 6 is provided on the inner flanging of the side surface of the protective shell 5. A sliding bead 7 is movably connected inside the positioning hole 6. The sliding bead 7 can be stuck inside the positioning hole 6 to limit the protective shell 5. The upper surface of the sliding bead 7 is fixedly connected to a movable block 8. A first spring (which can be regarded as a second elastic member 9) is fixedly connected to the side of the movable block 8 away from the sliding bead 7, facilitating the expansion and contraction of the sliding bead 7 and facilitating the installation and disassembly of the protective shell 5.

[0062] A shock-absorbing plate 10 is movably connected to the upper side of the side surface of the protective shell 5, which can play a shock-absorbing role when a falling rock hits. Sliding grooves 11 are provided on both sides of the protective shell 5. Fixed columns 13 are slidably connected inside both sides of the shock-absorbing plate 10. A second spring (which can be regarded as the first elastic member 14) is fixedly connected to the lower surface of the sliding block 12. The shock-absorbing plate 10 drives the sliding block 12 to squeeze the second spring, so that the movement of the shock-absorbing plate 10 has elasticity, playing a role in buffering and shock absorption. The outer surface of the sliding block 12 is slidably connected to the sliding groove 11.

[0063] A connecting block 15 is fixedly connected to the lower surface of the base 4. An alarm lamp 16 is movably connected inside the connecting block 15. The smoke sensor 2 is electrically connected to the alarm lamp 16, and the temperature sensor 3 is electrically connected to the alarm lamp 16. A rotating block 17 is rotatably connected inside the connecting block 15. Rotating the rotating block 17 can push the threaded block 19 to connect with the threaded groove 20 on the alarm lamp 16. A limiting block 18 is fixedly connected to the rotating block 17, which can limit the rotating block 17 to prevent the rotating block 17 from detaching from the inside of the connecting block 15. A threaded block 19 is fixedly connected to the side of the limiting block 18 away from the rotating block 17. A threaded groove 20 is provided on the side surface of the alarm lamp 16. The side surface of the threaded block 19 is threadedly connected to the threaded groove 20, facilitating the replacement and disassembly of the alarm lamp 16.

[0064] An installation plate 21 is fixedly connected to the side surface of the base 4. Bolts (which can be regarded as fasteners 22) are threadedly connected inside the installation plate 21, facilitating the fixed connection with the outside. The number of bolts is four and they are distributed in a rectangular array to increase stability.

[0065] When the underground alarm device of this embodiment is in use: Fix the bolts to the underground through the installation plate 21, and then slide the protective shell 5 into both sides of the base 4. When the sliding beads 7 touch the positioning holes 6, the first spring loses pressure and drives the sliding beads 7 to pop out, thereby limiting the protective shell 5. The protective shell 5 can protect the body 1. When a falling rock hits from above, the shock-absorbing plate 10 presses down to drive the sliding block 12 to squeeze the second spring. The second spring will make the shock-absorbing plate 10 elastic, thereby buffering the gravity of the falling rock and achieving the shock-absorbing effect. When the smoke sensor 2 and the temperature sensor 3 sense that the internal temperature or smoke is too high or too thick, the alarm lamp 16 will be activated to give an alarm, and at the same time, a signal will be sent to the upper workbench to remind the staff that there is a fire underground.

[0066] For the underground 5G alarm device of this embodiment, by connecting the protective shell 5 to both sides of the base 4 and using the sliding beads 7 and the first spring to limit the protective shell 5, the body 1 can be protected from collision. At the same time, when there are falling gravels, the second spring makes the movement of the shock-absorbing plate 10 elastic, thereby damping the gravity generated by the falling gravels and playing a role in protecting the body 1.

[0067] This kind of underground 5G alarm device is provided with a connecting block 15 under the base 4. By using the rotation of the rotating block 17 to push the threaded block 19 into connection with the threaded groove 20, it is convenient to disassemble and replace the alarm lamp 16, thus increasing the overall practicability.

[0068] Although the above embodiments have been shown and described, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions, and variations made by those of ordinary skill in the art to the above embodiments are within the protection scope of the present invention.

Claims

1. An underground alarm device, characterized in that, Comprising: A base; A body, the body being disposed above the base, and the body being provided with a monitoring sensor for monitoring set parameters; A protective shell and a shock-absorbing plate, the protective shell being detachably assembled to the base and covering the outer peripheral side of the body, and the shock-absorbing plate being slidably assembled to the top side of the protective shell and shielding above the body; A first elastic member, the first elastic member being disposed between the protective shell and the shock-absorbing plate, and the first elastic member being used for buffering the impact of the shock-absorbing plate on the protective shell after a foreign object falls onto the shock-absorbing plate.

2. The downhole alarm device according to claim 1, wherein, A sliding groove is provided at the top of the protective shell, the sliding groove extending in the vertical direction, the shock-absorbing plate being provided with a sliding block, and the sliding block being slidably assembled in the sliding groove in the vertical direction, and the first elastic member being disposed between the sliding block and the protective shell.

3. The downhole alarm device according to claim 2, characterized in that, A fixing post is provided in the sliding groove, the fixing post extending in the vertical direction, both the sliding block and the first elastic member being sleeved on the outer peripheral side of the fixing post, and the first elastic member being located below the sliding block.

4. The downhole alarm device according to claim 1, characterized in that, An inward flange is provided at the bottom of the protective shell, an assembly groove is provided on the base, both the inward flange and the assembly groove being horizontally arranged, and the inward flange being fitted in the assembly groove and being slidable along the extending direction of the assembly groove.

5. The downhole alarm device according to claim 4, characterized in that, A positioning hole is provided on the top side of the inward flange, a sliding bead is movably assembled on the top side wall of the assembly groove, the sliding bead being movable up and down relative to the base, and the sliding bead being used for being embedded in the positioning hole to realize the limiting and restraining of the protective shell.

6. The downhole alarm device according to claim 5, wherein A clamping groove communicating with the assembly groove is provided on the base, a second elastic member and a movable block are assembled in the clamping groove, the movable block being limited and fitted in the clamping groove, the sliding bead being fixedly connected to the movable block, and the second elastic member acting between the base and the movable block and being used for pressing the sliding bead into the positioning hole.

7. The downhole alarm device according to claim 1, characterized in that, Including an alarm lamp, the monitoring sensor being electrically connected to the alarm lamp, a connecting block being provided below the base, an installation groove being provided on the bottom side of the connecting block, and the alarm lamp being detachably assembled in the installation groove.

8. The downhole alarm device according to claim 7, characterized in that, Including a connecting member, the connecting block being provided with an installation hole, the connecting member including a threaded block, a limiting block and a rotating block, the limiting block being limited and fitted in the installation hole and connected between the threaded block and the rotating block, the threaded block extending out from the inner hole opening of the installation hole and being threadedly assembled with the alarm lamp, and the rotating block extending out from the outer hole opening of the installation hole and being used for driving the connecting member to rotate.

9. The downhole alarm device according to claim 1, characterized in that, Including a mounting plate, the mounting plate being fixed to one side of the base and being spaced apart from the body in the horizontal direction, and the mounting plate being assembled with a plurality of fasteners for fixedly mounting the mounting plate.

10. The downhole alarm device according to any one of claims 1-9, characterized in that, There are a plurality of the monitoring sensors, and the plurality of monitoring sensors include a smoke sensor and a temperature sensor.

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