A goaf monitoring device that is easy to disassemble and assemble

Abstract

The present invention discloses a goaf monitoring device that is convenient for disassembly and assembly, including a monitor body, the left and right side walls of the monitor body are evenly fixed with assembly pieces, and the lower side wall of the monitor body is welded with a connection seat, a cable is plugged into the lower side of the connection seat, a screw sleeve is fixedly installed at the lower end of the cable, a probe is screwed into the lower end of the screw sleeve, a trapezoidal hole is opened on the surface of the assembly piece, a pin embedded in the surrounding wall of the goaf is plugged into the inside of the trapezoidal hole, a stress-strain sensor is arranged on the pin, the assembly piece and the pin are both provided with an electric sheet for contact electrical connection, and the stress-strain sensor is electrically connected to the monitor body through the electric sheet of the two. The goaf is monitored by the stress-strain sensor and the probe, and the pressure change and the crack picture are collected. The data are combined and analyzed to achieve the purpose of early warning and forecasting. The main equipment can be recycled to reduce the cost, and it has practical application value for goaf monitoring.

Description

Technical Field

[0001] The present invention belongs to the technical field of goaf deformation and ground pressure monitoring, and can realize data collection, deformation observation, and monitoring of ground pressure surge and release. Through processing and analysis under big data conditions, early warning and forecasting work can be achieved. Specifically, it relates to a goaf monitoring device that is easy to disassemble and assemble. Background Art

[0002] Goaf is a "hole" created by human excavation or natural geological movement under the surface. The sudden collapse of the goaf will cause casualties and equipment damage, posing a serious threat to mine safety, mine environment, life and property. Monitoring and early warning of goaf can provide early warning and forecast of ground pressure disasters in mines, which is conducive to mining enterprises to take countermeasures in advance and avoid catastrophic accidents. However, the existing monitoring equipment is mostly assembled by directly fixing it on the wall with screws or expansion nails, which is inconvenient to disassemble, and the positioning effect of the device is weak, the monitoring data is single, and it is not convenient to analyze the data later.

[0003] In view of this, the present invention is proposed. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a goaf monitoring device that is convenient for disassembly and assembly. In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0005] A goaf monitoring device that is easy to disassemble and assemble comprises a monitor body, the left and right side walls of the monitor body are evenly fixedly mounted with assembly pieces, a connecting seat is welded to the lower side wall of the monitor body, a cable is plugged into the lower side of the connecting seat, a threaded sleeve is fixedly mounted on the lower end of the cable, a probe is threadedly connected to the lower end of the threaded sleeve, trapezoidal holes are provided on the surfaces of the assembly pieces, pins embedded in the surrounding wall of the goaf are plugged into the inside of the trapezoidal holes, stress-strain sensors are provided on the pins, the assembly pieces and the pins are both provided with electrical sheets for contact electrical connection, and the stress-strain sensor is electrically connected to the monitor body through the electrical sheets of the two.

[0006] Furthermore, the pin includes a rod body, the upper end of the rod body is integrally formed with an inclined clamping edge, and stress grooves are evenly opened on the upper parts of the rod body and the inclined clamping edge, a nail head is welded to the lower end of the rod body, and an inclined spring piece and a stress-strain sensor are integrally formed on the rear side of the outer wall of the rod body. By monitoring and analyzing the ground pressure changes of the intermediate columns or the top plate, it is determined that when the stress or strain reaches a certain value, it is the critical point of destruction, thereby effectively realizing the early warning work, and a stress-strain sensor is installed on the inner side of the inclined spring piece.

[0007] Furthermore, an electric sheet is provided on the upper part of the outer wall of the rod body of the pin, and the electric sheet is electrically connected to the stress-strain sensor; an electric sheet is provided on the inner wall of the trapezoidal hole, and the electric sheet is electrically connected to the monitor body.

[0008] Furthermore, a wireless transceiver is fixedly mounted on the upper side of the monitor body;

[0009] Furthermore, the outside of the cables are sleeved with fixing rings fixed by rivets;

[0010] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art.

[0011] The present invention monitors the goaf area through stress-strain sensors and probes, collects pressure changes and crack images, provides stress-strain monitoring data and deformation observation data, combines and analyzes the data, and better monitors in real time to obtain more accurate analysis results, achieving the purpose of early warning and forecasting. It has strong reliability and high accuracy, and has practical application value for goaf area monitoring. After use, the present invention can quickly disassemble the monitor body and the probe part, which is convenient and quick to operate. The main equipment can be recycled, reducing costs and effectively reducing the capital investment in monitoring equipment.

[0012] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are part of this application and are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0014] Figure 1 It is a front view of the present invention;

[0015] Figure 2 It is a schematic diagram of the pin structure of the present invention;

[0016] Figure 3 It is a left side cross-sectional view of the assembly piece of the present invention.

[0017] In the figure: 1-monitor body; 2-assembly plate; 3-pin; 4-wireless transceiver; 5-connection seat; 6-cable; 7-screw sleeve; 8-probe; 9-trapezoidal hole; 10-rod body; 11-stress groove; 12-inclined clamping edge; 13-nail head; 14-inclined spring piece; 15-fixing ring; 16-rivet.

[0018] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0020] like Figures 1 to 3 As shown, a goaf monitoring device that is easy to disassemble and assemble in this embodiment includes a monitor body 1, and assembly pieces 2 are evenly fixedly installed on the left and right side walls of the monitor body 1, and a connecting seat 5 is welded to the lower side wall of the monitor body 1, and a cable 6 is plugged into the lower side of the connecting seat 5, and a threaded sleeve 7 is fixedly installed on the lower end of the cable 6, and a probe 8 is threaded on the lower end of the threaded sleeve 7, and trapezoidal holes 9 are opened on the surface of the assembly piece 2, and pins 3 embedded in the surrounding wall of the goaf are inserted inside the trapezoidal holes 9, and stress-strain sensors are provided on the pins 3, and the assembly piece 2 and the pin 3 have electrical sheets for contact electrical connection, and the stress-strain sensor is electrically connected to the monitor body 1 through the electrical sheets of the two. When in use, a hole is punched on the roof or pillar of the goaf, the pin 3 is fixed in the hole, the stress-strain sensor measures the pressure in the hole, the monitor body 1 is firmly connected by the pin, the stress-strain sensor is electrically connected to the monitor body 1 by the electrical sheet, the probe 8 is electrically connected to the monitor body 1 through the cable 6, the stress-strain sensor detects the pressure in the hole, the deformation and cracking of the roof or pillar of the goaf can be observed through the probe 8, the monitor body 1 sends and receives signals, the pressure value changes and the probe 8 capture images are transmitted, and the time and mode of the goaf wall damage are analyzed based on the long-term observation images and pressure data changes, so as to effectively achieve early warning and forecasting work. The probe here can observe the outer surface of the goaf roof or pillar, and can also be inserted into the goaf wall through the hole to observe the changes in the hole wall cracks.

[0021] As a component connected to the peripheral wall of the goaf, the pin 3 needs to have convenient installation performance. In this example, the pin 3 includes a rod body 10, and the upper end of the rod body 10 is integrally formed with an inclined clamping edge 12, and the upper part of the rod body 10 and the inclined clamping edge 12 is evenly provided with stress grooves 11 (see the attached figure, when subjected to extrusion force, the inclined clamping edge 12 can shrink toward the inner circle), the lower end of the rod body 10 is welded with a nail head 13, and the outer wall of the rod body 10 is provided with an inclined spring piece 14, and a stress-strain sensor is installed inside the inclined spring piece 14. When in use, the pin 3 is installed in the peripheral wall of the goaf, so that the stress-strain sensor can sense the change of the peripheral wall pressure. By monitoring and analyzing the pressure change of the intermediate column or the top plate, it can be set that when the stress or strain reaches a certain value, it is a warning node or a critical point of damage, so as to achieve the purpose of warning. An electric sheet is provided on the upper part of the outer wall of the rod body 10 of the pin 3, and the electric sheet is electrically connected to the stress-strain sensor; an electric sheet is provided on the inner peripheral wall of the trapezoidal hole 9, and the electric sheet is electrically connected to the monitor body 1. When the pin 3 is engaged with the trapezoidal hole 9, the electric sheets of the two are in contact and conductive, thereby realizing the electrical connection between the stress-strain sensor and the monitor body 1. In this example, the monitor body 1 and the stress-strain sensor are both prior arts. The present invention applies the two to goaf area monitoring, which is an improvement on their application, not an improvement on their main structure, so the structures and circuit diagrams of the two are not described here in detail.

[0022] In order to facilitate the sending of the monitored data, a wireless transceiver 4 is fixedly installed on the upper side of the monitor body 1. It is more convenient to send data in real time by wireless means. Preferably, the monitor body 1 is provided with a charging power supply, and of course a wired power supply is also possible. The charging power supply facilitates the displacement of the equipment and ensures the battery supply time and timely replacement. The outside of the cable 6 is sleeved with a fixing ring 15 fixed by a rivet 16, and the cable 6 is fixed to the peripheral wall of the goaf by the rivet 16, which is convenient for cable arrangement.

[0023] Working principle: first drill a hole on the roof or surrounding wall of the goaf that needs to be monitored, and drive the pin 3 into the hole. The inclined spring piece 14 at the end of the pin 3 will generate prestress, which is enough to jam it in the hole. The hole position should correspond to the position of the trapezoidal hole 9. After the pins 3 are installed, the trapezoidal hole 9 of the monitor body 1 is installed corresponding to the position of the pin 3. The inclined clamping edge 12 will shrink inward under the action of the extrusion force, and the inclined clamping edge 12 will eventually pass through the trapezoidal hole 9 to complete the clamping. At this time, the monitor body 1 is fixed, the probe 8 is placed in the predetermined position, the cable 6 is secured with a rivet 16, and the monitor body 1 is turned on. The stress-strain sensor detects the pressure in real time, and the probe 8 transmits the image back in real time, so as to realize real-time monitoring of the goaf. After the monitoring is completed or when the equipment needs to be dismantled, it is only necessary to use pliers or special tubular props to squeeze the inclined clamping edge 12 of the pin 3, and pull the monitor body 1 outward to complete the dismantling of the device. The monitor body 1 and the probe 8 can be reused, the operation is convenient and quick, the main equipment can be recycled, and the cost is reduced.

[0024] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A goaf monitoring device that is easy to disassemble and assemble, characterized in that: The monitor comprises a monitor body (1), the left and right side walls of the monitor body (1) are evenly fixedly mounted with assembly plates (2), the lower side wall of the monitor body (1) is welded with a connection seat (5), the lower side of the connection seat (5) is plugged with a cable (6), the lower end of the cable (6) is fixedly mounted with a threaded sleeve (7), the lower end of the threaded sleeve (7) is threaded with a probe (8), the surface of the assembly plate (2) is provided with a trapezoidal hole (9), the inside of the trapezoidal hole (9) is plugged with a pin (3) embedded in the peripheral wall of the goaf, the pin (3) is provided with a stress-strain sensor, the assembly plate (2) and the pin (3) are both provided with an electrical sheet for contact electrical connection, and the stress-strain sensor is electrically connected to the monitor body (1) through the electrical sheet of the two being connected; The pin (3) comprises a rod body (10), the upper end of the rod body (10) is integrally formed with an inclined clamping edge (12), and stress grooves (11) are evenly provided on the upper parts of the rod body (10) and the inclined clamping edge (12), the lower end of the rod body (10) is welded with a nail head (13), and the rear side of the outer side wall of the rod body (10) is integrally formed with an inclined spring sheet (14), and a stress-strain sensor is installed on the inner side of the inclined spring sheet (14).

2. The goaf monitoring device that is easy to disassemble and assemble according to claim 1 is characterized in that: An electric sheet is provided on the upper part of the outer wall of the rod body (10) of the pin (3), and the electric sheet is electrically connected to the stress-strain sensor. An electric sheet is provided on the inner peripheral wall of the trapezoidal hole (9), and the electric sheet is electrically connected to the monitor body (1).

3. The goaf monitoring device that is easy to disassemble and assemble according to claim 1 is characterized in that: A wireless transceiver (4) is fixedly mounted on the upper side of the monitor body (1).

4. The goaf monitoring device that is easy to disassemble and assemble according to claim 1 is characterized in that: The outside of each cable (6) is sleeved with a fixing ring (15) fixed by a rivet (16).

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