Early warning device for preventing coal mine rock burst

Abstract

The utility model discloses a coal mine rock burst prevention early warning device, which relates to the technical field of rock burst early warning, and comprises a fixed column, a prediction box is arranged above the fixed column, the bottom of the inner wall of the prediction box is provided with an avoiding hole, the fixed column is internally provided with a telescopic groove, the outer side of the fixed column is provided with an early warning mechanism, and the outer side of the fixed column is provided with a warning mechanism. The early warning mechanism comprises a placing assembly and an early warning assembly, the placing assembly and the early warning assembly are used in cooperation, the placing assembly comprises a fixing ring, the fixing ring is fixedly connected to the outer side of the fixing column, and first rotating blocks are fixedly connected to the outer side of the fixing ring in a circumferential array mode; and supporting legs are rotationally connected into the first rotating blocks. According to the early warning device for preventing and treating the coal mine rock burst, stress can be rapidly detected through the arranged early warning mechanism, meanwhile, storage is convenient, occupied space is small, and compared with a manual rotating mode, the early warning device is more uniform and stable, simple in structure and high in practicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of rock burst early warning, especially relates to a rock burst early warning device for preventing and treating coal mines. BACKGROUND

[0002] In the rock burst monitoring and early warning method for preventing and treating coal mines, the drill cuttings method is one of the most economical and effective methods for predicting rock burst on the coal mine, the stress state in the coal and rock mass is evaluated according to the coal powder quantity of different drilling depths and the macroscopic dynamic phenomena in the drilling process, and then the impact danger of the monitoring medium is monitored and tested, and the drill cuttings method is generally combined with a handheld electromagnetic radiation monitor or a borehole stress meter to perform manual measurement, so that more rock burst precursor information is obtained, and the detection result is more accurate.

[0003] After retrieval, a rock burst early warning device for preventing and treating coal mines (authorization announcement number: CN 213175722 U) "includes a mounting box, two mutually symmetrical support columns are fixedly installed at the bottom of the mounting box, a base is fixedly installed at the bottom of the two support columns, two mutually symmetrical support rods are fixedly installed at the top of the mounting box, a rotating rod is rotatably connected to the side opposite to the two support rods, a stress display is fixedly installed at the middle of the rotating rod, a connecting line is fixedly connected to the bottom of the stress display, a through hole for plugging the connecting line is formed in the top and the bottom of the mounting box, and a borehole stress meter is fixedly connected to the end of the connecting line away from the stress display. The utility model relates to the technical field of coal mine prevention and treatment equipment, has the advantages of simple structure, high practicability, convenient movement and use, multi-directional monitoring data viewing according to the needs of users, and solves the problem of labor waste of the existing device".

[0004] According to the above related technology, the applicant believes that the support column and the base in the above technology are fixed structures, occupy a large space during storage and transportation, are inconvenient to use, and the above technology adopts manual rotation of the rotating wheel to release the steel wire rope, which cannot achieve uniform rotation. In view of the above problems, we launch a rock burst early warning device for preventing and treating coal mines. UTILITY MODEL CONTENTS

[0005] The utility model discloses a rock burst early warning device for preventing and treating coal mines, which aims to solve the technical problems that the support column and the base are fixed structures, occupy a large space during storage and transportation, are inconvenient to use, and the above technology adopts manual rotation of the rotating wheel to release the steel wire rope, which cannot achieve uniform rotation.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The application discloses a coal mine rock burst early warning device, which comprises a fixed column, a prediction box is arranged above the fixed column, an avoiding hole is formed in the inner wall bottom of the prediction box, an expansion groove is formed in the inside of the fixed column, an early warning mechanism is arranged on the outside of the fixed column, the early warning mechanism comprises a placing assembly and an early warning assembly, the placing assembly and the early warning assembly are used in cooperation, the placing assembly comprises a fixed ring, the fixed ring is fixedly connected to the outside of the fixed column, a plurality of No. 1 rotating blocks are fixedly connected to the outside of the fixed ring in a circumferential array, a supporting leg is rotatably connected to the inside of each No. 1 rotating block, a No. 2 rotating block is fixedly connected to the top of the supporting leg, a pulling rod is rotatably connected to the top of the No. 2 rotating block, the pulling rod is rotatably connected to the fixed ring, and a bottom foot is rotatably connected to the bottom of the supporting leg.

[0008] The early warning mechanism can quickly detect stress, is convenient to store, occupies small space, is more uniform and stable compared with a manual rotating mode, has a simple structure and high practicability.

[0009] In a preferred scheme, the early warning assembly comprises a connecting rod, the connecting rod is fixedly connected to the top of the fixed ring, the top of the connecting rod is fixedly connected to the bottom of the prediction box, a rotating shaft is rotatably connected to the inside of the prediction box, a plurality of blocking discs are symmetrically fixedly connected to the outside of the rotating shaft, a steel wire rope is wound on the outside of the rotating shaft, a borehole stress meter is fixedly connected to the bottom of the steel wire rope, one end of the rotating shaft extends to the outside of the prediction box and is fixedly connected to a No. 2 gear, a motor is fixedly connected to one side of the top of the prediction box, a No. 1 gear is fixedly connected to the output end of the motor, and the No. 1 gear and the No. 2 gear are in meshing connection.

[0010] The early warning assembly can detect and early warn stress, and operation efficiency is improved.

[0011] In a preferred scheme, a stress display is fixedly connected to one side of the top of the prediction box, and the stress display and the borehole stress meter are used in cooperation.

[0012] The stress display can display specific data of stress.

[0013] In a preferred scheme, a protective cover is fixedly connected to the outside of the prediction box, and ventilation grooves are equidistantly formed in the inside of the protective cover.

[0014] The protective cover can protect the No. 1 gear and the No. 2 gear.

[0015] In a preferred scheme, a controller is fixedly connected to the top of the prediction box and located on the side away from the motor.

[0016] The controller is arranged, so that the staff can control the opening and closing of the motor.

[0017] In a preferred scheme, the motor is electrically connected with the controller.

[0018] The motor is electrically connected with the controller, so that the operation efficiency is improved and the operation steps are reduced.

[0019] The coal mine impact ground pressure prevention and treatment early warning device has the following advantages.

[0020] Firstly, the early warning mechanism is arranged, so that the stress can be quickly detected, and the early warning mechanism is convenient to store, occupies small space, and is more uniform, stable and simple in structure and practical.

[0021] Secondly, the stress display is arranged, so that the specific data of the stress can be displayed, the protective cover is arranged, so that the first gear and the second gear can be protected, and the controller is arranged, so that the staff can control the opening and closing of the motor, and the operation is more convenient. DRAWINGS

[0022] Figure 1 The utility model provides a kind of prevention and treatment coal mine impact ground pressure early warning device's three-dimensional section schematic view.

[0023] Figure 2 The utility model provides a kind of prevention and treatment coal mine impact ground pressure early warning device's three-dimensional bottom view schematic view.

[0024] Figure 3 The utility model provides a kind of prevention and treatment coal mine impact ground pressure early warning device's placing assembly three-dimensional schematic view.

[0025] Figure 4 The utility model provides a kind of prevention and treatment coal mine impact ground pressure early warning device's early warning assembly three-dimensional schematic view.

[0026] In the drawing, 1, fixed column;2, prediction box;3, avoid hole;4, telescopic groove;51, fixed ring;52, one rotating block;53, support leg;54, pull rod;55, two rotating blocks;56, bottom foot;61, connecting rod;62, rotating shaft;63, steel wire rope;64, borehole stress meter;65, blocking disc;66, motor;67, first gear;68, second gear;7, stress display;8, protective cover;9, controller. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0028] The coal mine impact ground pressure early warning device disclosed by the utility model is mainly applied to the scene of impact ground pressure early warning.

[0029] Referring to Figure 1 Figure 4 The utility model discloses a kind of coal mine impact ground pressure early warning devices, including fixed column 1, the top of fixed column 1 is equipped with prediction box 2, the inner wall bottom of prediction box 2 is equipped with avoiding hole 3, the inside of fixed column 1 is equipped with telescopic groove 4, the outside of fixed column 1 is equipped with early warning mechanism, early warning mechanism includes placing assembly and early warning component, placing assembly and early warning component are used mutually, placing assembly includes fixed ring 51, fixed ring 51 is fixedly connected to the outside of fixed column 1, the outside of fixed ring 51 is fixedly connected with no.Early warning component includes connecting rod 61, connecting rod 61 is fixedly connected at the top of fixed ring 51, the top of connecting rod 61 is fixedly connected with the bottom of prediction box 2, the inside of prediction box 2 is rotatably connected with rotating shaft 62, the outside of rotating shaft 62 is fixedly connected with barrier disc 65 symmetrically, steel wire rope 63 is wound on the outside of rotating shaft 62, the bottom of steel wire rope 63 is fixedly connected with borehole stress meter 64, one end of rotating shaft 62 extends to the outside of prediction box 2 and is fixedly connected with second gear 68, the top of prediction box 2 one side is fixedly connected with motor 66, the output of motor 66 is fixedly connected with first gear 67, first gear 67 and second gear 68 are engagedly connected.

[0030] In this embodiment: the three support legs 53 are pulled away from each other, causing all three support legs 53 to rotate around the first rotating block 52. Under the action of the pulling rod 54, the three support legs 53 support the fixed column 1 and the prediction box 2. Then, the operator starts the motor 66. The output end of the motor 66 rotates, driving the first gear 67 to rotate. The rotation of the first gear 67 drives the second gear 68 to rotate, which in turn drives the rotating shaft 62 to rotate. The rotation of the rotating shaft 62 releases the wire rope 63 downward, causing the drilling stress gauge 64 to move downward and begin to calculate and detect the stress in the hole. The stress display 7 can display the specific stress value. The set early warning mechanism can quickly detect the stress. It is also easy to store, occupies less space, and is more uniform and stable than manual rotation. The structure is simple and highly practical.

[0031] In the above technical solution, considering that both the support column and the base are fixed structures, they occupy a large amount of space during storage and transportation, making them inconvenient to use. Furthermore, the above technology uses manual rotation of the rotating wheel to release the wire rope, which cannot achieve uniform rotation. To solve these problems, the specific operation is as follows:

[0032] Reference Figure 1 - Figure 4 In a preferred embodiment, a stress display 7 is fixedly connected to the top side of the prediction box 2, and the stress display 7 and the borehole stress gauge 64 are used in conjunction with each other. A protective cover 8 is fixedly connected to the outside of the prediction box 2, and ventilation slots are equidistantly provided inside the protective cover 8. A controller 9 is fixedly connected to the top of the prediction box 2, on the side away from the motor 66. The motor 66 is electrically connected to the controller 9.

[0033] In this embodiment: the stress display 7 can display specific stress data; the protective cover 8 can protect gear 67 and gear 68; and the controller 9 allows operators to easily control the opening and closing of motor 66, making operation simpler.

[0034] Working principle: In actual use, the operator first moves the warning device to the required position, then pulls the three support legs 53 away from each other, causing all three support legs 53 to rotate around the first rotating block 52. Under the action of the pulling rod 54, the three support legs 53 support the fixed column 1 and the prediction box 2. Then, the operator starts the motor 66. The output end of the motor 66 rotates, driving the first gear 67 to rotate. The rotation of the first gear 67 drives the second gear 68 to rotate, which in turn drives the rotating shaft 62 to rotate. The rotation of the rotating shaft 62 releases the wire rope 63 downward, causing the drilling stress gauge 64 to move downward and begin to calculate and detect the stress in the hole. The specific stress value can be displayed through the stress display 7.

[0035] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A coal mine rockburst early warning device, comprising a fixed column (1), characterized in that: A prediction box (2) is provided above the fixed column (1). An avoidance hole (3) is provided at the bottom of the inner wall of the prediction box (2). An expansion groove (4) is provided inside the fixed column (1). An early warning mechanism is provided on the outside of the fixed column (1). The early warning mechanism includes a placement component and an early warning component. The placement component and the early warning component work together. The mounting assembly includes a fixing ring (51), which is fixedly connected to the outside of the fixing post (1). A first rotating block (52) is fixedly connected to the outside of the fixing ring (51) in a circumferential array. A support leg (53) is rotatably connected inside the first rotating block (52). A second rotating block (55) is fixedly connected to the top of the support leg (53). A pull rod (54) is rotatably connected to the top of the second rotating block (55). The pull rod (54) is rotatably connected to the fixing ring (51). A foot (56) is rotatably connected to the bottom of the support leg (53).

2. The early warning device for preventing coal mine rockbursts according to claim 1, characterized in that: The early warning component includes a connecting rod (61), which is fixedly connected to the top of a fixing ring (51). The top of the connecting rod (61) is fixedly connected to the bottom of the prediction box (2). A rotating shaft (62) is rotatably connected inside the prediction box (2). A blocking disc (65) is symmetrically fixedly connected to the outside of the rotating shaft (62). A steel wire rope (63) is wound around the outside of the rotating shaft (62). A drilling stress gauge (64) is fixedly connected to the bottom of the steel wire rope (63). One end of the rotating shaft (62) extends to the outside of the prediction box (2) and is fixedly connected to a second gear (68). A motor (66) is fixedly connected to one side of the top of the prediction box (2). A first gear (67) is fixedly connected to the output end of the motor (66). The first gear (67) and the second gear (68) are meshed together.

3. The early warning device for preventing coal mine rockbursts according to claim 1, characterized in that: A stress display (7) is fixedly connected to one side of the top of the prediction box (2), and the stress display (7) and the borehole stress gauge (64) are used together.

4. The early warning device for preventing coal mine rockbursts according to claim 1, characterized in that: The prediction box (2) is fixedly connected to a protective cover (8) on the outside, and ventilation slots are provided at equal intervals inside the protective cover (8).

5. The early warning device for preventing coal mine rockbursts according to claim 1, characterized in that: A controller (9) is fixedly connected to the top of the prediction box (2) and to the side away from the motor (66).

6. The early warning device for preventing coal mine rockbursts according to claim 2, characterized in that: The motor (66) is electrically connected to the controller (9).

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