Coal mine ground measurement water prevention and control early warning device

Abstract

The utility model relates to the technical field of coal mine operation especially relates to a coal mine ground measurement water prevention and treatment early warning device, its technical scheme includes: the mounting seat, the contact switch is installed in the mounting seat, the buoyancy mechanism is installed on the mounting seat, the buoyancy mechanism is used for triggering contact switch, the buoyancy mechanism includes vertical pole, fixed mounting has the pressing plate on the vertical pole, the mounting seat includes the base, is set up in the base and is opened and is reserved the hole, the reserved hole is slidably inserted and is installed with the slide rod, the slide rod top fixed mounting has the roof, the roof and the pressing plate dynamic contact, the slide rod bottom and the pressing end contact of contact switch but are not fixedly connected, the slide rod on the base outside is installed with the elastic piece, the elastic piece is used for the reset of roof, the utility model has the advantage that the alarm can be automatically closed after the water level drops.

Description

Technical Field

[0001] This utility model relates to the field of coal mine operation technology, specifically to a coal mine geological survey and prevention water early warning device. Background Technology

[0002] In the field of coal mine safety production, water hazards are one of the major safety hazards, posing a serious threat to underground personnel and equipment. Therefore, timely and accurate monitoring of water level changes in key areas of the mine is crucial. Currently, to achieve early warning of groundwater inrush or abnormal water accumulation, the industry commonly uses triggering devices based on the principle of buoyancy. These devices typically trigger the alarm system by using the rising motion of a buoy when the water level reaches a preset warning line, providing a critical early warning signal for timely water control measures. This is a commonly used and important technical means to ensure the safe operation of mines.

[0003] However, these buoyancy-based early warning devices have a significant limitation in practical applications: when the water level at the monitoring point drops from a high level, the buoy that triggered the alarm sometimes fails to return to its initial position smoothly. This difficulty in resetting means that even if the water level has dropped below the safety line, the alarm triggered by the water level rise cannot be automatically deactivated. This not only causes continuous false alarms, interfering with managers' judgment of the true water situation and wasting emergency resources on unnecessary investigations, but more seriously, it may weaken the credibility and response efficiency of the entire early warning system, potentially causing it to be ignored when a real alarm is needed.

[0004] Therefore, a coal mine geological monitoring and water control early warning device is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a coal mine ground survey and water control early warning device, which has the advantage of automatically shutting off the alarm after the water level drops. It solves the problem that in the current stage, the float of the buoyancy device is sometimes difficult to reset when the water level drops, which causes the alarm device triggered after the water level drops to not automatically shut off.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a coal mine geological survey and water control early warning device, including a mounting base, a contact switch installed inside the mounting base, and a buoyancy mechanism installed on the mounting base, the buoyancy mechanism being used to trigger the contact switch;

[0007] The buoyancy mechanism includes a vertical rod on which a pressure plate is fixedly mounted; the mounting base includes a base with a pre-drilled hole in which a sliding rod is slidably inserted; a top plate is fixedly mounted on the top of the sliding rod, and the top plate is in dynamic contact with the pressure plate; the bottom of the sliding rod is in contact with but not fixedly connected to the pressing end of a contact switch; and an elastic element is mounted on the sliding rod on the outside of the base for resetting the top plate.

[0008] Preferably, the bottom of the upright is provided with a pivot, the upright is rotatably connected to the mounting base through the pivot, and a float is fixedly installed on the top of the upright.

[0009] In the design, a pivot is provided at the bottom of the upright to enable flexible rotational connection between the upright and the mounting base, reducing the frictional resistance when the float moves with changes in water level;

[0010] A float is fixedly installed at the top of the pole, which has the advantage of directly and efficiently transmitting changes in buoyancy to the pole and pressure plate, ensuring the sensitivity of water level monitoring.

[0011] Preferably, an adapter frame is fixedly installed on one side of the base, and the adapter frame has a through hole for connecting the rotating shaft. A sealing cover is sealed on the other side of the base to protect the contact switch.

[0012] In the design, an adapter is fixedly installed on one side of the base to achieve a stable installation of the rotating shaft, providing a reliable rotation fulcrum for the buoyancy mechanism;

[0013] The adapter frame has through holes for connecting the rotating shaft, which can accurately guide and support the rotating shaft;

[0014] The other side of the base is sealed with a cover to protect the internal contact switch through physical isolation, effectively preventing moisture and dust from entering and causing device failure.

[0015] Preferably, the sealing cover has an opening and a wire guide installed therethrough, through which a wire passes. The wire is used to connect the contact switch and the alarm. A reserved groove is provided on one side of the sealing cover, and the reserved groove cooperates with the reserved hole to guide the sliding trajectory of the slide rod.

[0016] In the design, the sealing cover has an opening and a wire guide installed to achieve centralized and orderly lead-out of the alarm wires, which has the advantages of preventing the wires from being bent and damaged at the interface and improving the sealing performance.

[0017] The wiring enclosure contains wires that pass through a channel-style wiring method to connect the contact switch and the external alarm.

[0018] The sealing cover has a reserved groove on one side, which can precisely match the reserved hole, and together they constrain the slide rod to slide only along the set vertical trajectory to prevent deviation and jamming.

[0019] Preferably, a sealing ring is provided at the reserved hole, and the sealing ring is used to seal the contact surface between the slide rod and the reserved hole.

[0020] In the design, a sealing ring is installed at the reserved hole to achieve efficient dynamic sealing of the sliding part of the slide rod. It plays a key role in preventing external liquid from seeping into the base through the gap between the slide rod and the reserved hole and protecting core components such as the contact switch.

[0021] Preferably, the bottom of the elastic element is elastically connected to the top of the base, and the top of the elastic element is elastically connected to the bottom of the top plate. The elastic element is a compression spring.

[0022] In the design, the bottom of the elastic component is elastically connected to the top of the base, and the top of the elastic component is elastically connected to the bottom of the top plate, so that a constant and reliable downward restoring force is applied to the top plate and the sliding rod when the water level drops.

[0023] The elastic component uses a compression spring, which has the advantages of simple structure, rapid reset response, stable elastic force and easy maintenance and replacement. It is the core guarantee to ensure that the alarm can be automatically shut off after the water level drops.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0025] This invention achieves the effect of forcibly deactivating the alarm state after the water level drops by setting a separable dynamic contact structure and an independent reset system.

[0026] When the water level rises, the upright of the buoyancy mechanism drives the pressure plate to rotate. After the pressure plate rotates, it pushes the top plate at the top of the slide rod to move down, forcing the slide rod to slide down along the reserved hole and press the contact switch to trigger the alarm.

[0027] When the water level drops, the elastic component installed on the outer slide bar of the base immediately releases its elasticity, driving the slide bar and the top plate to return to their original position. At the same time, the float and the upright rotate, causing the pressure plate to disengage from the top plate and the bottom of the slide bar to quickly separate from the pressing end of the contact switch. The contact switch automatically disconnects the alarm circuit. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the buoyancy mechanism structure of this utility model;

[0030] Figure 3 This is a schematic diagram of the sealing cap connection structure of this utility model;

[0031] Figure 4 This is a schematic diagram of the base connection structure of this utility model;

[0032] Figure 5 This is a schematic diagram of the sliding rod connection structure of this utility model.

[0033] In the diagram: 1. Mounting bracket; 11. Base; 111. Adapter frame; 112. Reserved hole; 12. Sealing cover; 121. Cable guide cover; 122. Reserved groove; 13. Slide rod; 131. Top plate; 132. Elastic component; 2. Buoyancy mechanism; 21. Float ball; 22. Upright pole; 221. Pressure plate; 222. Rotating shaft; 3. Contact switch. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Example 1

[0036] like Figures 1 to 5 As shown, one embodiment of this utility model is provided: a coal mine geological survey and prevention water early warning device, including a mounting base 1, a contact switch 3 installed in the mounting base 1, and a buoyancy mechanism 2 installed on the mounting base 1, the buoyancy mechanism 2 being used to trigger the contact switch 3;

[0037] The buoyancy mechanism 2 includes a vertical rod 22, on which a pressure plate 221 is fixedly installed; the mounting base 1 includes a base 11, on which a reserved hole 112 is provided, and a slide rod 13 is slidably inserted into the reserved hole 112. A top plate 131 is fixedly installed on the top of the slide rod 13, and the top plate 131 is in dynamic contact with the pressure plate 221. The bottom of the slide rod 13 is in contact with the pressing end of the contact switch 3 but is not fixedly connected. A spring element 132 is installed on the slide rod 13 on the outside of the base 11. The spring element 132 is used to reset the top plate 131.

[0038] Specifically, by setting up a separable dynamic contact structure and an independent reset system, the alarm state is forcibly deactivated after the water level drops.

[0039] When the water level rises, the upright rod 22 of the buoyancy mechanism 2 drives the pressure plate 221 to rotate. After the pressure plate 221 rotates, it pushes the top plate 131 at the top of the slide rod 13 to move down, forcing the slide rod 13 to slide down along the reserved hole 112 and press the contact switch 3 to trigger the alarm.

[0040] When the water level drops, the elastic element 132 installed on the outer slide bar 13 of the base 11 immediately releases its elastic force, driving the slide bar 13 and the top plate 131 to return to the starting position. At the same time, the float 21 and the upright rod 22 rotate, causing the pressure plate 221 to disengage from the top plate 131, and causing the bottom of the slide bar 13 to quickly separate from the pressing end of the contact switch 3. The contact switch 3 automatically disconnects the alarm circuit.

[0041] Example 2

[0042] To achieve flexible rotation of the buoyancy mechanism and efficient transmission of buoyancy changes, such as Figure 1 and Figure 2As shown, in this embodiment, the bottom of the upright 22 is provided with a rotating shaft 222, and the upright 22 is rotatably connected to the mounting base 1 through the rotating shaft 222. A float ball 21 is fixedly installed on the top of the upright 22.

[0043] Specifically, the bottom of the upright 22 is equipped with a rotating shaft 222, which enables the upright 22 to be flexibly rotated and connected to the mounting base 1, reducing the frictional resistance of the float 21 when it moves with the water level.

[0044] The top of the pole 22 is fixedly equipped with a float 21, which has the advantage of directly and efficiently transmitting changes in buoyancy to the pole 22 and the pressure plate 221, thus ensuring the sensitivity of water level monitoring.

[0045] Example 3

[0046] To achieve stability of the rotating fulcrum and sealing protection of the contact switch, such as Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, in this embodiment, an adapter frame 111 is fixedly installed on one side of the base 11. The adapter frame 111 has a through hole for connecting the rotating shaft 222. A sealing cover 12 is sealed on the other side of the base 11. The sealing cover 12 is used to protect the contact switch 3.

[0047] Specifically, an adapter frame 111 is fixedly installed on one side of the base 11 to achieve a stable installation of the rotating shaft 222, providing a reliable rotation fulcrum for the buoyancy mechanism 2;

[0048] The adapter 111 has a through hole for connecting the rotating shaft 222, which has the function of precisely guiding and supporting the rotating shaft 222;

[0049] The other side of the base 11 is sealed with a sealing cover 12, which protects the internal contact switch 3 by physical isolation, effectively preventing moisture and dust from entering and causing device failure.

[0050] Furthermore, the sealing cover 12 has an opening and a wire guide 121 is installed therethrough. A wire passes through the wire guide 121 and is used to connect the contact switch 3 and the alarm. A reserved groove 122 is provided on one side of the sealing cover 12. The reserved groove 122 cooperates with the reserved hole 112 to guide the sliding trajectory of the slide rod 13.

[0051] Specifically, the sealing cover 12 has an opening and a wire guide 121 installed on it, which enables the alarm wire to be led out in a centralized and orderly manner, and has the advantages of preventing the wire from being bent and damaged at the interface and improving the sealing performance.

[0052] The wiring cover 121 contains wires that pass through it and are connected to the contact switch 3 and the external alarm using a channelized wiring method.

[0053] The sealing cover 12 has a reserved groove 122 on one side, which can precisely match the reserved hole 112, and together constrain the slide rod 13 to slide only along the set vertical trajectory to prevent deviation and jamming.

[0054] Furthermore, a sealing ring is provided at the reserved hole 112, which is used to seal the contact surface between the slide rod 13 and the reserved hole 112.

[0055] Specifically, a sealing ring is provided at the reserved hole 112 to achieve efficient dynamic sealing of the sliding part of the slide rod 13. It plays a key role in preventing external liquid from seeping into the interior of the base 11 along the gap between the slide rod 13 and the reserved hole 112, and protecting core components such as the contact switch 3.

[0056] Furthermore, the bottom of the elastic element 132 is elastically connected to the top of the base 11, and the top of the elastic element 132 is elastically connected to the bottom of the top plate 131. The elastic element 132 is a compression spring.

[0057] Specifically, the bottom of the elastic element 132 is elastically connected to the top of the base 11, and the top of the elastic element 132 is elastically connected to the bottom of the top plate 131, so that a constant and reliable downward restoring force is applied to the top plate 131 and the slide bar 13 when the water level drops.

[0058] The elastic component 132 uses a compression spring, which has the advantages of simple structure, rapid reset response, stable elastic force and easy maintenance and replacement. It is the core guarantee to ensure that the alarm can be automatically shut off after the water level drops.

[0059] When this invention is in use, as the water level at the monitoring point rises, the float 21, under the influence of buoyancy, causes the upright 22 to rotate and rise around the pivot 222. Simultaneously, the pressure plate 221, fixed to the upright 22, rotates and presses downwards against the top plate 131 at the top of the slide rod 13. After being pressed, the top plate 131 pushes the slide rod 13 vertically downwards along the pre-drilled hole 112. The bottom of the slide rod 13 then continuously presses the trigger end of the contact switch 3. At this time, the contact switch 3 conducts the circuit, triggering the external alarm system to issue a water level exceeding warning.

[0060] Subsequently, as the water level recedes, the float 21 loses sufficient buoyancy support, causing the upright 22 to rotate and move downwards. At this time, the contact pressure between the pressure plate 221 and the top plate 131 disappears, and the elastic element 132 installed on the outer slide rod 13 of the base 11 immediately releases its stored energy. The elastic element 132 pushes the top plate 131 upwards, forcing the slide rod 13 to smoothly slide upwards and reset along the reserved hole 112. The bottom of the slide rod 13 then quickly separates from the pressing end of the contact switch 3, the internal contacts of the contact switch 3 automatically pop open, the alarm circuit is forcibly cut off, and the warning state is accurately deactivated. The entire process requires no manual intervention, realizing the core function of automatically shutting off the alarm after the water level drops.

[0061] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A coal mine geological survey and water control early warning device, comprising a mounting base (1), wherein a contact switch (3) is installed inside the mounting base (1), and a buoyancy mechanism (2) is installed on the mounting base (1), wherein the buoyancy mechanism (2) is used to trigger the contact switch (3), characterized in that: The buoyancy mechanism (2) includes a vertical rod (22), on which a pressure plate (221) is fixedly installed; The mounting base (1) includes a base (11), a reserved hole (112) is provided on the base (11), a slide rod (13) is slidably inserted in the reserved hole (112), a top plate (131) is fixedly installed on the top of the slide rod (13), the top plate (131) is in dynamic contact with the pressure plate (221), the bottom of the slide rod (13) is in contact with the pressing end of the contact switch (3) but not fixedly connected, and an elastic element (132) is installed on the slide rod (13) on the outside of the base (11), the elastic element (132) is used for the reset of the top plate (131).

2. The coal mine geological survey and water control early warning device according to claim 1, characterized in that, The bottom of the upright (22) is provided with a rotating shaft (222), and the upright (22) is rotatably connected to the mounting base (1) through the rotating shaft (222). A float (21) is fixedly installed on the top of the upright (22).

3. The coal mine geological survey and water control early warning device according to claim 1, characterized in that, An adapter frame (111) is fixedly installed on one side of the base (11). The adapter frame (111) has a through hole for connecting the rotating shaft (222). A sealing cover (12) is sealed on the other side of the base (11). The sealing cover (12) is used to protect the contact switch (3).

4. The coal mine geological survey and water control early warning device according to claim 3, characterized in that, The sealing cover (12) has an opening and a wire guide (121) is installed in it. A wire passes through the wire guide (121) and is used to connect the contact switch (3) and the alarm. A reserved groove (122) is provided on one side of the sealing cover (12). The reserved groove (122) cooperates with the reserved hole (112) to guide the sliding trajectory of the slide rod (13).

5. A coal mine geological survey and water control early warning device according to claim 4, characterized in that, A sealing ring is provided at the reserved hole (112), which is used to seal the contact surface between the slide rod (13) and the reserved hole (112).

6. The coal mine geological survey and water control early warning device according to claim 1, characterized in that, The bottom of the elastic element (132) is elastically connected to the top of the base (11), and the top of the elastic element (132) is elastically connected to the bottom of the top plate (131). The elastic element (132) is a compression spring.

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