Multi-source heterogeneous sensor fast-assembly type roadway surrounding rock sensing device

Abstract

A multi-source heterogeneous sensor fast-assembly type roadway surrounding rock sensing device comprises a main shell, an outer shell, a sealing cover and a sensor bearing shell, an annular boss is arranged at the lower end of the main shell, an upper end annular boss is arranged at the upper end of the main shell, an annular concave platform is arranged at the upper end of the sensor bearing shell, and the annular concave platform is matched with the annular boss. The sensor bearing shell is fixedly connected to the lower portion of the main shell, a first miniature single-chip microcomputer, an attitude sensor, a first temperature sensor and a flow sensor are installed in the sensor bearing shell, the sealing cover is matched with an annular boss at the upper end of the main shell, the outer shell is an arc-shaped shell, and an installation circular ring is integrally arranged at the upper end of the arc-shaped shell. An arc-shaped shell covers the outer wall of a nozzle shell of the roller bit, an annular boss at the upper end of the main shell is sleeved with a mounting ring, the mounting ring is fixed through a sealing cover, and a second miniature single chip microcomputer, a second temperature sensor, a vibration sensor and a pressure sensor are mounted in the arc-shaped shell. The surrounding rock sensing device can be rapidly installed on an underground drill bit, so that relevant geological parameters are obtained when the surrounding rock sensing device works along with an underground drill rod.

Description

Technical Field

[0001] This utility model belongs to the field of underground geological data acquisition, and in particular relates to a multi-source heterogeneous sensor quick-installation roadway surrounding rock sensing device applied to underground surrounding rock drilling rigs. Background Technology

[0002] my country possesses abundant coal reserves, but the complex geological conditions, high gas content, and deep burial depths of coalfields pose significant challenges to safe coal mining. In recent years, with technological advancements and continuous optimization of mining techniques, relevant personnel have employed various technical means to enhance the safety of coal mining and support safe coal production.

[0003] Among the various methods, studying the geological conditions of the surrounding rock in underground mines is one of the most important. Rock mechanics parameters are crucial for assessing the stability and safety of rock masses. Through rock mechanics experiments and field observations, we can obtain rock strength parameters such as compressive strength, tensile strength, and shear strength. During the design phase, based on these rock mechanics parameters, we can determine reasonable roadway layouts, support methods, and mining techniques, thereby improving the safety of coal mining. However, traditional rock mechanics parameter testing requires laboratory testing, which involves limited experimental equipment and conditions that differ from actual environments, and also presents significant limitations in rock specimen preparation. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-source heterogeneous sensor quick-installation roadway surrounding rock sensing device. This surrounding rock sensing device can be quickly installed on the downhole drill bit, thereby achieving the purpose of acquiring relevant geological parameters while working with the downhole drill pipe.

[0005] To achieve the above objectives, the technical solution of this utility model is a multi-source heterogeneous sensor quick-installation roadway surrounding rock sensing device, comprising a main housing, an outer housing, a cover, and a sensor supporting housing.

[0006] The main housing is a cylindrical body extending vertically. It is mounted inside the nozzle channel of the roller cone drill bit via retaining rings. The nozzle is fitted inside the main housing via retaining rings. An annular boss is provided at the lower end of the main housing, integrally and coaxially with it. The outer wall of the annular boss has external threads. An upper annular boss is provided at the upper end of the main housing, integrally and coaxially with it. The inner wall of the upper annular boss has internal threads.

[0007] The sensor housing is a hollow cylinder extending vertically. The upper end of the sensor housing has an annular recess with internal threads on its inner wall. The internal threads of the annular recess engage with the external threads of the annular boss, fixing the sensor housing to the lower part of the main housing. A first microcontroller, an attitude sensor, a first temperature sensor, and a flow sensor are installed inside the sensor housing. The attitude sensor, first temperature sensor, and flow sensor are connected to the first microcontroller via circuitry.

[0008] The cap is an annular body with a ring-shaped groove on its bottom surface. The ring-shaped groove mates with a ring-shaped boss at the upper end of the main housing. A thread is provided on the inner wall of the annular groove, which mates with the internal thread of the ring-shaped boss at the upper end of the main housing. This thread is used to install the cap onto the main housing. The outer wall of the ring-shaped groove is shorter than the inner wall, so that a gap exists between the outer wall and the main housing after the cap is installed.

[0009] The outer shell is an arc-shaped shell with an integrally formed mounting ring at the upper end. The shape of the arc-shaped shell matches the shape of the nozzle shell at the nozzle channel of the roller cone drill bit, covering the outer wall of the nozzle shell of the roller cone drill bit. The mounting ring is fitted onto the annular protrusion at the upper end of the main shell and fixed by a cover. An installation compartment with a cover is opened on the inner wall of the arc-shaped shell. A second microcontroller, a second temperature sensor, a vibration sensor, and a pressure sensor are installed in the installation compartment. The second temperature sensor, vibration sensor, and pressure sensor are connected to the second microcontroller circuitry.

[0010] The inner wall of the annular boss is flush with the inner wall of the main housing; the inner and outer walls of the upper annular boss do not extend beyond the inner and outer walls of the main housing.

[0011] The inner diameter of the cover is smaller than the inner diameter of the main shell, and a recess is provided at the lower end of the inner side wall and outer wall of the annular groove.

[0012] The first and second microcontrollers have electromagnetic wave short-pass transmission antennas.

[0013] The lower inner wall of the sensor housing is flared.

[0014] It also includes an extension chamber, which is integrally set on one side of the lower part of the sensor carrier housing, with the outer wall of the extension chamber aligned with the outer wall of the sensor carrier housing.

[0015] The first and second microcontrollers are powered by explosion-proof batteries, and the explosion-proof battery inside the second microcontroller and its housing is provided with thermal insulation material.

[0016] Preferably, the inner wall of the outer shell is provided with protrusions, which are arranged on the left and right sides of the arc-shaped outer shell, and the pressure sensor is mounted on the protrusions.

[0017] This invention has a simple structure and is easy to use. It can be directly and quickly installed on a roller cone drill bit without modification, reducing sensor installation costs and improving work efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the installation of this utility model.

[0019] Figure 2 This is a schematic diagram of the connection structure of the main housing, sensor support housing, cover, and extension chamber of this utility model.

[0020] Figure 3 This is a schematic diagram of the outer shell.

[0021] Figure 4 This is a schematic diagram of the sensor's supporting housing and extension chamber. Detailed Implementation

[0022] like Figures 1-4 As shown, a multi-source heterogeneous sensor quick-installation tunnel surrounding rock sensing device includes a main housing 1, an outer housing 2, a cover 3, and a sensor supporting housing 4.

[0023] The main housing 1 is a cylindrical body that runs vertically through the body. The main housing 1 is installed inside the original nozzle channel of the roller cone drill bit by means of a retaining ring. The dimensions of the main housing 1 are set according to the original nozzle dimensions. The retaining ring installation position corresponds to the retaining ring groove used for installing the nozzle. The main housing 1 has a retaining ring groove inside, and the nozzle 21 is installed by matching the retaining ring to ensure the original nozzle function. The lower end of the main housing 1 is provided with an annular boss. The annular boss is integral with the main housing and is coaxially set. The inner wall of the annular boss is flush with the inner wall of the main housing, and the outer wall of the annular boss is not aligned with the outer wall of the main housing. The outer wall of the annular boss is provided with external threads. The purpose is to make the sensor carrier housing form a cylinder after installation, so as to ensure that the device can be installed normally in the nozzle hole. The upper end of the main housing is provided with an upper annular boss. The upper annular boss is integral with the main housing and is coaxially set. The inner and outer walls of the upper annular boss do not exceed the inner and outer walls of the main housing. That is, it is installed in the middle position of the upper end face of the main housing. The purpose is to facilitate the installation of the cap.

[0024] The sensor housing 4 is a hollow cylinder that runs vertically through the body. Preferably, the lower inner wall of the sensor housing is flared to reduce the impact of water flow on the sensor housing. The upper end of the sensor housing 4 has an annular recess, the outer wall of which is flush with the sensor housing. The inner wall of the annular recess has an internal thread. The engagement of the internal thread of the annular recess with the external thread of the annular boss allows the sensor housing 4 to be fixedly connected to the lower part of the main housing 1. A first microcontroller, an attitude sensor 42, a first temperature sensor 43, and a flow sensor 44 are installed inside the sensor housing. The attitude sensor 42, the first temperature sensor 43, and the flow sensor 44 are connected to the first microcontroller via circuitry. The first microcontroller is powered by an explosion-proof battery. Preferably, if the space of the sensor carrier housing 4 is insufficient, an extension chamber 41 can be provided. The extension chamber 41 is integrally set on one side of the lower part of the sensor carrier housing. The extension chamber is an approximate cuboid and is provided with an openable and closable cover. The outer wall of the extension chamber is aligned with the outer wall of the sensor carrier housing to avoid affecting the installation of the device in the nozzle pipe. Its inner wall can be slightly higher than the inner wall of the sensor carrier housing 4. A slope is provided at the junction with the sensor carrier housing 4 to reduce the impact of water flow.

[0025] The cap 3 is a ring with an annular groove on its bottom surface. The annular groove mates with the annular boss at the upper end of the main housing. The inner wall of the annular groove is threaded, and the thread mates with the annular boss at the upper end of the main housing. This is used to install the cap onto the main housing. The outer wall of the annular groove is shorter than the inner wall. After the cap is installed, there is a gap between the outer wall and the main housing, which is used to fix the outer housing. Preferably, the inner diameter of the cap is smaller than the inner diameter of the main housing. The lower end of the outer wall of the inner wall of the annular groove is provided with a recess 31, which is used to fix the nozzle again after installation.

[0026] The outer shell 2 is an arc-shaped shell with an integral mounting ring 21 at the upper end. The shape of the arc-shaped shell matches the shape of the nozzle shell at the nozzle channel of the roller cone drill bit, covering the outer wall of the nozzle shell of the roller cone drill bit. Since the nozzle shell is a protruding arc, when the arc-shaped shell is fitted on it, it is positioned by the mounting ring and the overall shape, and will not shift due to the rotation of the drill bit. In the case of extremely harsh geological conditions, it can also be fixed to the nozzle shell by installing fixing bolts at the lower end. Note that after drilling, a sealing device should be installed to prevent the nozzle shell from leaking. The mounting ring 21 is fitted onto the annular protrusion at the upper end of the main shell and fixed by the cover 3. An installation chamber 21 with a cover is opened on the inner wall of the arc-shaped shell. The installation chamber 21 contains a second micro-microcontroller 22, a second temperature sensor 23, and a vibration sensor 24. The second temperature sensor 23 and vibration sensor 24 are connected to the second micro-microcontroller 22 by wiring. The second micro-microcontroller is powered by an explosion-proof battery. Since the outer casing may generate heat due to friction with the rock wall, the second microcontroller and the explosion-proof battery inside the outer casing are provided with thermal insulation material. Preferably, the inner wall of the outer casing is provided with protrusions 25, which are arranged on the left and right sides of the arc-shaped outer casing. The pressure sensor 26 is installed on the protrusions, and the protrusions 25 are in contact with the outer wall of the nozzle casing. The pressure sensor 26 is connected to the circuit of the second microcontroller through a channel provided inside the outer casing.

[0027] The first and second microcontrollers have electromagnetic short-pass transmitting antennas for wireless communication with the receiver on the drilling rig.

[0028] When using this utility model device, the original nozzle on the roller cone nozzle pipe is removed, and then the main housing is installed in the original position on the pipe. The nozzle on the main housing ensures the original function of the drill bit. Simultaneously, an outer housing with the same shape as the nozzle pipe shell is designed to cover it. The outer housing is made of wear-resistant metal material. Due to the roller cone drill bit design, the nozzle pipe shell is located on the lower side wall of the tooth disc, receiving less impact, thus ensuring the stability of the equipment installation. This enables rapid installation of multiple sensors while drilling. The sensor and microcontroller solutions in this application are implementations of existing technologies. Existing technologies such as multi-sensor chips combined with microprocessors can be used. This application does not limit the technology of the sensors and control chips; any existing technology can be used to achieve the function. It should be noted that this application only provides an integrated rapid installation device for some sensors suitable for installation on the drill bit. The installation methods for sensors required for obtaining other geological parameters are not included in this application's technical solution. This device cannot obtain all geological parameters. In this application, sealing rings are provided at the nozzle and component connections through sealing grooves to ensure sealing.

Claims

1. A multi-source heterogeneous sensor quick-installation roadway surrounding rock sensing device, characterized in that, Includes the main housing, outer housing, cover, and sensor housing. The main housing is a cylindrical body extending vertically. It is mounted inside the nozzle channel of the roller cone drill bit via retaining rings. The nozzle is fitted inside the main housing via retaining rings. An annular boss is provided at the lower end of the main housing, integrally and coaxially with it. The outer wall of the annular boss has external threads. An upper annular boss is provided at the upper end of the main housing, integrally and coaxially with it. The inner wall of the upper annular boss has internal threads. The sensor housing is a hollow cylinder extending vertically. The upper end of the sensor housing has an annular recess with internal threads on its inner wall. The internal threads of the annular recess engage with the external threads of the annular boss, fixing the sensor housing to the lower part of the main housing. A first microcontroller, an attitude sensor, a first temperature sensor, and a flow sensor are installed inside the sensor housing. The attitude sensor, the first temperature sensor, and the flow sensor are connected to the first microcontroller via circuitry. The cap is an annular body with a ring-shaped groove on its bottom surface. The ring-shaped groove mates with a ring-shaped boss at the upper end of the main housing. A thread is provided on the inner wall of the annular groove, which mates with the internal thread of the ring-shaped boss at the upper end of the main housing. This thread is used to install the cap onto the main housing. The outer wall of the ring-shaped groove is shorter than the inner wall, so that a gap exists between the outer wall and the main housing after the cap is installed. The outer shell is an arc-shaped shell with an integrally formed mounting ring at the upper end. The shape of the arc-shaped shell matches the shape of the nozzle shell at the nozzle channel of the roller cone drill bit, covering the outer wall of the nozzle shell of the roller cone drill bit. The mounting ring is fitted onto the annular protrusion at the upper end of the main shell and fixed by a cover. An installation compartment with a cover is provided on the inner wall of the arc-shaped shell. A second microcontroller, a second temperature sensor, a vibration sensor, and a pressure sensor are installed in the installation compartment. The second temperature sensor, vibration sensor, and pressure sensor are connected to the second microcontroller circuitry.

2. The multi-source heterogeneous sensor quick-installation roadway surrounding rock sensing device according to claim 1, characterized in that, The inner wall of the annular boss is flush with the inner wall of the main housing; the inner and outer walls of the upper annular boss do not extend beyond the inner and outer walls of the main housing.

3. The multi-source heterogeneous sensor quick-installation roadway surrounding rock sensing device according to claim 1, characterized in that, The inner diameter of the cover is smaller than the inner diameter of the main shell, and a recess is provided at the lower end of the inner side wall and outer wall of the annular groove.

4. The multi-source heterogeneous sensor quick-installation roadway surrounding rock sensing device according to claim 1, characterized in that, The first and second microcontrollers have electromagnetic wave short-pass transmission antennas.

5. The multi-source heterogeneous sensor quick-installation roadway surrounding rock sensing device according to claim 1, characterized in that, The lower inner wall of the sensor housing is flared.

6. The multi-source heterogeneous sensor quick-installation roadway surrounding rock sensing device according to claim 1, characterized in that, It also includes an extension chamber, which is integrally set on one side of the lower part of the sensor carrier housing, with the outer wall of the extension chamber aligned with the outer wall of the sensor carrier housing.

7. The multi-source heterogeneous sensor quick-installation roadway surrounding rock sensing device according to claim 1, characterized in that, The first and second microcontrollers are powered by explosion-proof batteries, and the explosion-proof battery inside the second microcontroller and its housing is provided with thermal insulation material.

8. The multi-source heterogeneous sensor quick-installation roadway surrounding rock sensing device according to claim 1, characterized in that, The inner wall of the outer shell is provided with protrusions, which are arranged on the left and right sides of the arc-shaped outer shell, and the pressure sensor is mounted on the protrusions.

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