Device for measuring throwing range of crushed rock and ore materials during impact of tunneling drill bit

Abstract

The invention relates to the technical field of heading machines, in particular to a device for measuring the throwing range of rock and ore crushed materials during impact of a heading drill bit. The device comprises a base frame and a bearing frame fixedly connected to the top of the base frame and used for supporting a rock mass sample, conveying assemblies are arranged on the two sides of the bearing frame correspondingly, baffles used for limiting are arranged on the conveying assemblies, a belt conveyor is arranged on the base frame and located below the rock mass sample, pressure sensors are densely arranged on the baffles, and the pressure sensors are arranged on the belt conveyor. The pressure sensors are connected to a data acquisition system, the data acquisition system is connected with a control system, and the control system is provided with a display screen for displaying the pressed position distribution of the pressure sensors. The baffle used for limiting is arranged and used for guiding broken stones generated by cutting of the tunneling drill bit to enter the conveying assembly under the action of gravity, collecting splashing range information of the broken stones and forming a broken stone splashing area density map, and data reference is provided for improving the angle of the tunneling drill bit.

Description

Technical Field

[0001] This invention relates to the field of tunneling machine technology, specifically to a device for measuring the range of rock and ore crushing and scattering materials during the impact of a tunneling drill bit. Background Technology

[0002] Tunneling rigs are core equipment used in underground engineering projects such as mines and tunnels to break up rock masses and form boreholes. Their impact performance directly affects tunneling efficiency, energy consumption, equipment lifespan, and operational safety. The test of the range of rock and ore crushing material spillage during tunneling bit impact aims to verify the equipment's impact capability under designed rock (or coal seam) conditions and whether it meets the expected tunneling speed.

[0003] Typical geological conditions can be reproduced in the laboratory using rock sample simulation platforms (such as large rock cutting test benches). However, when cutting hard rock, rock fragments are scattered, and the direction of the rock fragments is highly random (especially when the cutting head rotates to the side). Operators and auxiliary workers (such as support workers) may be in dangerous areas. Hard rock fragments are hard and have sharp edges. After being scattered, they scatter over a wide area (up to 5-10m around the cutting point) and are easy to embed in the tunnel floor or accumulate at the bottom of the equipment. Manual cleaning requires frequent machine shutdowns, increasing auxiliary operation time. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a device for measuring the range of rock and ore crushing material spillage during the impact of a tunneling drill bit, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for measuring the spillage range of rock and mineral crushed materials during drilling bit impact, comprising a base frame, a support frame for supporting a rock sample fixedly connected to the top of the base frame, an I-shaped limiting frame fixedly connected to the top of the support frame, the limiting frame being horizontally positioned, conveying components on both sides of the support frame, baffles for limiting the movement on the conveying components, a belt conveyor on the base frame located below the rock sample, closely arranged pressure sensors on the baffles, the pressure sensors being connected to a data acquisition system (DAQ), the data acquisition system (DAQ) being connected to a control system, and the control system having a display screen showing the distribution of pressure sensor positions being pressed.

[0006] Preferably, the conveying assembly includes a conveying box fixedly mounted on the side wall of the support frame. The top of the conveying box is open, and the bottom of the conveying box is arc-shaped. An auger is rotatably mounted between the inner walls of the conveying box. A motor is fixedly mounted at the end of the conveying box. The output end of the motor is fixedly connected to the end of the auger via a coupling. A discharge pipe is connected to the end of the conveying box away from the motor. The bottom end of the discharge pipe is located directly above the belt conveyor.

[0007] Preferably, the baffle is fixedly connected to the top of the conveyor box, the two baffles are arranged in an outward V-shape, and the length of the baffle is greater than the length of the conveyor box.

[0008] Preferably, the support frame is provided with multiple unloading ports for discharging rock fragments.

[0009] Preferably, a collection area is provided at the end of the base frame, and the collection area is located at the conveying end of the belt conveyor.

[0010] Preferably, the conveyor belt of the belt conveyor is provided with a plurality of equally spaced protrusions. The protrusions are arranged in a strip shape.

[0011] Preferably, the pressure sensors on the baffle are arranged at equal intervals in the horizontal and vertical directions. The data acquisition system (DAQ) collects the pressure position and pressure magnitude of the pressure sensors and generates data that is transmitted to the control system.

[0012] The present invention relates to a method for measuring the range of rock and ore crushing material spillage during the impact of a tunneling drill bit, comprising the following steps: 1) Install this device, place the rock mass sample on the base frame, and turn on the conveying components, pressure sensors, data acquisition system, and control system; 2) Start the drill bit test, crush the rock and ore, and throw the material to both sides and land on the baffle. The pressure sensor on the baffle detects the pressure and collects it in the data acquisition system, and then transmits it to the control system to generate a splash density map on the display screen.

[0013] This invention provides a device for measuring the spillage range of rock and ore crushed materials during the impact of a tunneling drill bit, which has the following beneficial effects: In this invention, a baffle for limiting the movement is provided on the conveying assembly to guide the crushed stone generated by the drilling bit into the conveying assembly under the action of gravity, collect information on the splash range of the crushed stone, and form a density map of the crushed stone splash area, which provides data reference for improving the angle of the drilling bit. It can also be used as a collection point for crushed stone at the tunneling and cutting site, preventing accumulation from affecting the forward movement of the operating equipment. The conveying component transports the crushed stone to the discharge pipe, where it falls onto the belt conveyor under gravity. In addition, some crushed stone will also fall directly onto the belt conveyor, and finally, under the conveyor's transport, the crushed stone is collected in the collection area. Through the three-stage connection of baffle limiting, conveying component guiding, and belt conveyor transfer, a closed loop is formed from the cutting point to the collection area, reducing crushed stone scattering and improving the safety of surrounding operators and auxiliary workers (such as support workers) during their work. Attached Figure Description

[0014] Figure 1This is a three-dimensional structural diagram of a device for measuring the range of rock and ore crushing material spillage during the impact of a tunneling drill bit, as proposed in this invention. Figure 2 This is a structural diagram of the rock mass sample installation state of a rock mass sample for measuring the range of rock and ore crushing material spillage during the impact of a tunneling drill bit, as proposed in this invention. Figure 3 for Figure 2 The right-view structural diagram; Figure 4 This is a partial structural diagram of a device for measuring the range of rock and ore crushing material spillage during the impact of a tunneling drill bit, as proposed in this invention. Figure 5 This is a diagram showing the connection relationship of pressure sensors in a device for measuring the range of rock and ore crushing material spillage during the impact of a tunneling drill bit, as proposed in this invention. Figure 6 This invention presents a diagram showing the falling points of crushed stone on the baffle of a device for measuring the range of rock and ore crushing material spillage during the impact of a tunneling drill bit.

[0015] In the figure: 1. Base frame; 101. Collection area; 2. Support frame; 201. Discharge port; 3. Limiting frame; 4. Conveying box; 5. Screwdriver; 6. Motor 1; 7. Discharge pipe; 8. Baffle; 9. Belt conveyor; 901. Protrusion; 10. Rock sample. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0017] Please see Figures 1 to 4 This invention provides a technical solution: a device for measuring the spillage range of rock and mineral crushed material during drilling bit impact, comprising a base frame 1, a support frame 2 fixedly connected to the top of the base frame 1 for supporting a rock sample 10, an I-shaped limiting frame 3 fixedly connected to the top of the support frame 2, the limiting frame 3 being horizontally positioned, conveying components on both sides of the support frame 2, and baffles 8 for limiting the movement on the conveying components, and a belt conveyor 9 mounted on the base frame 1, located below the rock sample 10. A densely packed pressure sensor is mounted on the baffle 8, the pressure sensor being connected to a data acquisition system (DAQ), the data acquisition system (DAQ) being connected to a control system, and the control system having a display screen showing the distribution of pressure sensor positions being pressed.

[0018] The baffles 8 are fixed on both sides of the support frame 2. The baffles on both sides of the top structure extend and connect to each other, which can effectively limit and collect the splashed rocks and minerals, preventing them from splashing too far away.

[0019] The pressure sensors on the baffle are arranged at equal intervals in the horizontal and vertical directions. The data acquisition system (DAQ) collects the pressure sensor's pressure location and pressure magnitude and generates data that is transmitted to the control system.

[0020] The splashed rock and ore can collide with the baffle. Pressure sensors on the baffle detect the collision, generate pressure data, and transmit it to the data acquisition system to produce a splash density map. This data is then used to adjust the angle of the cutting teeth on the tunneling machine's drill bit to prevent splashed rock and ore from damaging the on-site tunneling and support equipment.

[0021] A baffle 8 is installed on the conveying assembly to guide the crushed stone generated during cutting into the conveying assembly under gravity. The conveying assembly then transports the crushed stone to the discharge pipe 7, where it falls onto the belt conveyor 9 under gravity. Additionally, some crushed stone also falls directly onto the belt conveyor 9. Finally, the crushed stone is collected in the collection area 101 by the belt conveyor 9. Through the three-stage connection of the baffle 8 for limiting the flow, the conveying assembly for guiding the flow, and the belt conveyor 9 for transferring the flow, a closed loop is formed from the cutting point to the collection area 101, reducing the scattering of crushed stone and improving the safety of surrounding operators and auxiliary workers (such as support workers).

[0022] The following describes the process of the impact test of the tunneling drill bit. First, the rock sample 10 needs to be placed on the top of the support frame 2 so that the end of the rock sample 10 is in contact with the limiting frame 3. Then, the operator operates the tunneling machine so that the drum of the tunneling machine contacts the rock sample 10 to conduct the impact test of the tunneling drill bit.

[0023] Rock and ore are crushed, and the material is thrown to both sides and lands on the baffles. Pressure sensors on the baffles detect the pressure and collect it in the data acquisition system, then transmit it to the control system to generate a splash density map on the display screen.

[0024] By changing different drill bits, the range of rock fragments splashed during drilling impact was verified, providing data for borehole impact protection.

[0025] Specifically, the conveying assembly includes a conveyor box 4 fixedly mounted on the side wall of the support frame 2. The top of the conveyor box 4 is open, and the bottom of the conveyor box 4 is arc-shaped. An auger 5 is rotatably mounted between the inner walls of the conveyor box 4. A motor 6 is fixedly mounted at the end of the conveyor box 4, and the output end of the motor 6 is fixedly connected to the end of the auger 5 via a coupling. A discharge pipe 7 is connected to the end of the conveyor box 4 away from the motor 6. The bottom end of the discharge pipe 7 is located directly above the belt conveyor 9. The discharge pipe 7 is inclined to ensure that gravity can drive the crushed stone to fall freely, and also to ensure that the crushed stone discharged from the discharge pipe 7 can accurately fall onto the belt conveyor. The conveyor 9 is mounted on the belt conveyor; in addition, two side splash guards can be added to the base frame 1. The side splash guards and the belt conveyor 9 form a closed splash guard area. The flying gravel falls on the splash guards on both sides. Pressure sensors installed on the baffles are used to detect the falling gravel and collect the data through the data acquisition system. The data is then input into the computer to analyze the falling area of ​​the gravel. A density map is generated for the range of rock and mineral crushing material spillage caused by the impact of the drill bit. The size of the rock and mineral crushing material spillage area caused by the impact of the drill bit is analyzed to improve the rear spiral shape of the drill bit and reduce the injury to the operator caused by the rear impact during drilling.

[0026] After the crushed stone enters the conveyor box 4 through the baffle 8, the motor 6 is started, which drives the auger 5 to rotate. The auger 5 drives the crushed stone to move in a straight line and eventually moves to the discharge pipe 7. Under the action of gravity, the crushed stone falls onto the belt conveyor 9.

[0027] Reference Figure 1 The baffle 8 is fixedly connected to the top of the conveyor box 4. The two baffles 8 are arranged in an outward V-shape, and the length of the baffle 8 is greater than the length of the conveyor box 4.

[0028] When the crushed stone falls onto the baffle 8, it will descend along the surface of the baffle 8 due to gravity and eventually enter the inside of the conveyor box 4.

[0029] Reference Figure 1 The support frame 2 is equipped with multiple unloading ports 201 for discharging rock fragments.

[0030] Since some of the crushed stone falls directly during drilling, the material is dispersed through multiple discharge ports 201 to prevent it from accumulating on the support frame 2, thereby improving the rock mass crushed stone discharge effect and ensuring that the crushed stone discharged from the discharge port 201 accurately enters the belt conveyor 9, reducing scattering (a closed splash zone is formed between the side splash guard and the belt conveyor 9 to ensure that the crushed stone will not splash out from the side). Reference Figure 3 A collection area 101 is provided at the end of the base frame 1, and the collection area 101 is located at the end of the conveying of the belt conveyor 9.

[0031] Setting up nylon woven bags as gravel collection containers in collection area 101 is a low-cost and easy-to-operate solution, especially suitable for the temporary collection and transfer of small and medium-sized gravel. The bag size needs to be larger than the width of the conveyor belt of belt conveyor 9 to ensure that the gravel passing through collection area 101 can enter the woven bag. Thickened nylon woven bags need to be selected to ensure tear resistance and withstand the impact of hard rock gravel.

[0032] The conveyor belt of the belt conveyor 9 has multiple equally spaced protrusions 901. The protrusions 901 are arranged in a strip shape.

[0033] The strip structure extends along the width of the conveyor belt (its length is the same as the width of the conveyor belt), which can simultaneously restrain crushed stones at different widths, especially for easily rolling crushed stones such as flakes and columns.

[0034] The crushed stone will fall directly onto the belt conveyor 9, which will transport the crushed stone. The benefit of the protrusion 901 is that it can effectively hold the bottom of the crushed stone, preventing it from sliding along the surface of the conveyor belt and improving the conveying effect.

[0035] This device can also be installed at the mining and coal drilling site, positioned below the tunneling machine, for the collection of crushed stone.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for measuring the range of rock and ore crushing material spillage during drilling bit impact, characterized in that: Includes a base frame (1), a support frame (2) fixedly connected to the top of the base frame (1) for supporting the rock sample (10), a limiting frame (3) in the shape of an I-beam fixedly connected to the top of the support frame (2), the limiting frame (3) is set in a horizontal state, a conveying component is set on both sides of the support frame (2), a baffle (8) for limiting is set on the conveying component, a belt conveyor (9) is set on the base frame (1), and the belt conveyor (9) is located below the rock sample (10); A densely packed pressure sensor is installed on the baffle (8). The pressure sensor is connected to the data acquisition system (DAQ). The data acquisition system (DAQ) is connected to the control system. The control system is equipped with a display screen to show the distribution of the pressure sensor positions that are being pressed.

2. The device for measuring the range of rock and ore crushing material spillage during drilling bit impact as described in claim 1, characterized in that: The conveying assembly includes a conveying box (4) fixedly installed on the side wall of the support frame (2). The top of the conveying box (4) is an open structure, and the bottom of the conveying box (4) is an arc-shaped structure. An auger (5) is rotatably installed between the inner walls of the conveying box (4). A motor (6) is fixedly installed at the end of the conveying box (4). The output end of the motor (6) is fixedly connected to the end of the auger (5) through a coupling. A discharge pipe (7) is connected to the end of the conveying box (4) away from the motor (6). The bottom end of the discharge pipe (7) is located directly above the belt conveyor (9).

3. The device for measuring the range of rock and ore crushing material spillage during drilling bit impact as described in claim 1, characterized in that: The baffle (8) is fixedly connected to the top of the conveying box (4). The two baffles (8) are arranged in an outward V-shape, and the length of the baffle (8) is greater than the length of the conveying box (4).

4. The device for measuring the range of rock and ore crushing material spillage during drilling bit impact as described in claim 1, characterized in that: The support frame (2) is provided with multiple unloading ports (201) for discharging rock fragments.

5. The device for measuring the range of rock and ore crushing material spillage during drilling bit impact as described in claim 1, characterized in that: The base frame (1) is provided with a collection area (101) at its end, and the collection area (101) is located at the end of the conveyor belt (9).

6. The device for measuring the range of rock and ore crushing material spillage during drilling bit impact as described in claim 1, characterized in that: The belt conveyor (9) has multiple equally spaced protrusions (901) on its conveyor belt, and the protrusions (901) are arranged in a strip shape.

7. The device for measuring the range of rock and ore crushing material spillage during drilling bit impact as described in claim 1, characterized in that: The pressure sensors on the baffle (8) are arranged at equal intervals in the horizontal and vertical directions. The data acquisition system (DAQ) collects the pressure sensor's pressure position and pressure magnitude and generates data to transmit to the control system.

8. A method for verifying the measuring device for the range of rock and ore crushing material spillage during the impact of a tunneling drill bit as described in claim 7, characterized in that: Includes the following steps, 1) Install this device, place the rock mass sample (10) on the base frame (1), and turn on the conveying components, data acquisition system and control system; 2) Start the drill bit test, crush the rock and ore, and throw the material to both sides and land on the baffle (8). The pressure sensor on the baffle (8) detects the pressure and collects it in the data acquisition system, and then transmits it to the control system to generate a splash density map on the display screen.

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