Multi-stage series transfer conveyance coal mining method

Abstract

The present application belongs to the technical field of coal mine tunneling and transportation, and specifically relates to a multi-stage series transfer and transportation coal mining method. The method comprises the following steps: S1: sequentially connecting multiple groups of transfer mechanism units with telescopic function and self-moving function at the rear of the tunneling equipment, and the transfer mechanism units move with the tunneling equipment; S2: measuring the distance between the front end of the front-end transfer mechanism unit and the tunneling equipment in real time through a distance sensor; S3: setting an inter-unit docking sensor and an inter-unit distance sensor at the docking position of the two adjacent groups of transfer mechanism units; S4: monitoring and counting the coal quantity in real time through a conveying quantity monitoring device arranged on the transfer mechanism unit; S5: measuring the distance between the transfer mechanism unit and the roadway side in real time through a single vehicle and roadway side distance measuring device arranged on both sides of the transfer mechanism unit; and S6: connecting the rear-end transfer mechanism unit with a transfer belt conveyor to move and transport the coal to the transfer belt conveyor.

Description

Technical Field

[0001] This invention belongs to the field of coal mine tunneling and transportation technology, specifically a multi-stage tandem transfer and transportation method for coal mining. Background Technology

[0002] A transfer conveyor is a device used in underground coal mining. One end connects to the conveyor at the working face, and the other end connects to the tail of a belt conveyor. Its role in the three-machine system of large-scale fully mechanized mining is to transfer coal transported by the scraper conveyor at the mining face, raised from the roadway floor, and then onto the belt conveyor. Conventional transfer mechanisms suffer from difficulty in movement. Application number 201922478228.2 discloses an underground tracked mobile belt transfer conveyor, including a collection hopper, a first bridge frame, a second bridge frame, a self-moving component, a self-moving track, a leveling shovel, a first transfer frame, a second transfer frame, a first belt transfer conveyor body, a discharge end, and a discharge component. The second transfer frame is bolted to one side of the first belt transfer conveyor body, and the first transfer frame is bolted to the outside of the second transfer frame. The second bridge frame is bolted to one end of the first transfer frame. Although this belt transfer conveyor can move, its length is fixed, limiting its applicability.

[0003] Therefore, during underground mining operations, after the tunneling mechanism completes the extraction, an excavator needs to transport the extracted coal to a transfer machine via a transfer device, and then the transfer machine transfers it to a conveyor. This coal transportation process is cumbersome, requiring excavators during coal seam mining and reducing transfer efficiency. Summary of the Invention

[0004] To address the problems of cumbersome processes and low efficiency in existing coal transfer machines during coal mining and transportation, this invention provides a multi-stage series transfer and transportation method for coal mining.

[0005] This invention adopts the following technical solution: a multi-stage tandem transfer and transportation method for coal mining, comprising the following steps:

[0006] S1: Multiple sets of telescopic and self-moving transfer mechanism units are connected end to end behind the tunneling equipment. The transfer mechanism units move forward with the tunneling equipment.

[0007] S2: The distance between the front end of the transfer mechanism unit and the tunneling equipment is measured in real time by a distance sensor. The transfer mechanism unit at the front end and the tunneling equipment maintain a suitable distance so that the coal mined by the tunneling equipment can be directly transferred to the transfer mechanism unit at the front end.

[0008] S3: Unit workshop docking sensors and unit workshop distance sensors are set at the docking positions of two adjacent sets of transfer mechanism units. The unit workshop docking sensors control the docking positions of the two sets of transfer mechanism units to ensure that the docking positions are correct, and the unit workshop distance sensors control the distance between the two sets of transfer mechanism units to ensure that coal does not fall during transfer.

[0009] S4: The amount of coal transported is monitored and statistically analyzed in real time through the conveying capacity monitoring device installed on the transfer mechanism unit;

[0010] S5: The distance between the transfer mechanism unit and the roadway side is measured in real time by the single vehicle and roadway side distance measuring device set on both sides of the transfer mechanism unit;

[0011] S6: The tail transfer mechanism unit is connected to the transfer belt conveyor to transfer the coal onto the transfer belt conveyor.

[0012] The transfer mechanism unit includes a traveling part, a rotating unit is set on the traveling part, a rotary table assembly is installed on the rotating unit, one end of the rotary table assembly is the receiving part, and the other end is connected to the first-level telescopic unit and the second-level telescopic unit in sequence. The end of the second-level telescopic unit is installed on the follow-up support and connected to the third-level telescopic end unit.

[0013] In step S1, when the tunneling equipment moves forward, the first set of transfer mechanism units moves forward synchronously with the tunneling equipment, and the first set of transfer mechanism units is connected between the tunneling equipment and the coal transfer carrier belt conveyor; when the first set of transfer mechanism units extends to its maximum distance, the second set of transfer mechanism units follows and connects to the tail of the first set of transfer mechanism units between the coal transfer carrier belt conveyor and the coal transfer carrier belt conveyor; subsequent sets of transfer mechanism units use the same method to connect the tunneling equipment and the coal transfer carrier belt conveyor.

[0014] In step S2, the distance sensor specifically measures the distance between the discharge port and the receiving section of the tunneling equipment. This distance is sufficient to allow the coal from the discharge port to fall into the receiving section.

[0015] In step S3, the unit workshop docking sensor is a vision acquisition device. The vision acquisition device acquires adjacent images, processes the images, determines whether the docking positions of two adjacent sets of transfer mechanism units meet the requirements, and sends the determination result to the staff.

[0016] In step S3, the unit workshop distance sensor uses a point-to-point wireless ranging sensor to measure the distance between the tail of the front transfer mechanism unit and the receiving part of the rear transfer mechanism unit, ensuring that the distance is within a set threshold range. If the distance exceeds the set threshold range, a signal is sent to the worker.

[0017] In step S4, the conveying volume monitoring device is a visual acquisition device, which counts the amount of coal transported by monitoring the conveying section.

[0018] In step S4, the conveying volume monitoring device is a belt scale, which directly counts the amount of coal transported.

[0019] In step S5, the distance measurement device between the single vehicle and the roadway sidewall is an ultrasonic and laser ranging device, which collects the distance between the transfer mechanism unit and the coal wall sidewall in real time. When the distance does not meet the safety requirements, a signal is sent to the staff.

[0020] A vision acquisition device is installed on the transfer mechanism unit at the tail end to collect images and determine whether the discharge port of the transfer mechanism unit at the tail end is connected to the coal transfer conveyor belt. If it is not connected to the coal transfer conveyor belt, a signal is sent to the staff.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1) The entire process can be operated remotely by only one person. It is highly intelligent and does not require manual handling or adjustment, which greatly reduces the labor intensity of workers.

[0023] 2) Using a mobile telescopic belt conveyor to complete the coal transfer task during the tunnel opening construction process, realize continuous transportation, improve work efficiency, and thus improve the economic benefits of the coal mine. Attached Figure Description

[0024] Figure 1 This is a schematic diagram showing the connection of multiple sets of transfer mechanism units;

[0025] Figure 2 This is a structural diagram of the transfer mechanism unit;

[0026] In the diagram, 1-distance sensor, 2-unit workshop docking sensor, 3-unit workshop distance sensor, 4-single vehicle and roadway side distance measuring device, 5-unloading position measuring device, 6-transfer mechanism unit, 7-data acquisition device, 8-conveying capacity monitoring device, 6.1-traveling unit, 6.2-turntable assembly, 6.3-receiving unit, 6.4-first-level telescopic unit, 6.5-second-level telescopic unit, 6.6-third-level telescopic unit, 6.7-follow-up support. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] A multi-stage tandem transfer and transportation method for coal mining includes the following steps.

[0029] S1: Multiple sets of transfer mechanism units 6 with telescopic function and self-moving capability are connected sequentially at the rear of the tunneling equipment. The transfer mechanism units 6 move forward with the tunneling equipment.

[0030] like Figure 2 As shown, the transfer mechanism unit 6 includes a traveling part 6.1, a rotating unit is provided on the traveling part, and a rotary table assembly 6.2 is installed on the rotating unit. One end of the rotary table assembly 6.2 is a receiving part 6.3, and the other end is connected to a first-level telescopic unit 6.4 and a second-level telescopic unit 6.5 in sequence. The end of the second-level telescopic unit 6.5 is installed on a follow-up support 6.7 and connected to a third-level telescopic unit 6.6.

[0031] In step S1, when the tunneling equipment moves forward, the first set of transfer mechanism units 6 moves forward synchronously with the tunneling equipment. The first set of transfer mechanism units 6 is connected between the tunneling equipment and the coal transfer conveyor belt. When the first set of transfer mechanism units 6 extends to its maximum distance, the second set of transfer mechanism units 6 follows and connects to the tail of the first set of transfer mechanism units and the coal transfer conveyor belt. Subsequent sets of transfer mechanism units 6 use the same method to connect the tunneling equipment and the coal transfer conveyor belt.

[0032] S2: The distance between the front end of the transfer mechanism unit 6 and the tunneling equipment is measured in real time by the distance sensor 1. The transfer mechanism unit 6 at the front end maintains a suitable distance from the tunneling equipment so that the coal mined by the tunneling equipment can be directly transferred to the transfer mechanism unit 6 at the front end.

[0033] In step S2, distance sensor 1 specifically measures the distance between the discharge port of the tunneling equipment and the receiving section 6.3, which is sufficient to allow the coal from the discharge port to fall into the receiving section.

[0034] S3: The docking positions of two adjacent sets of transfer mechanism units 6 are set with unit workshop docking sensor 2 and unit workshop distance sensor 3. Unit workshop docking sensor 2 controls the docking positions of the two sets of transfer mechanism units 6 to be correct, and unit workshop distance sensor 3 controls the distance between the two sets of transfer mechanism units to ensure that coal does not fall during transfer.

[0035] The unit workshop docking sensor 2 is a vision acquisition device. The vision acquisition device acquires adjacent images, processes the images, determines whether the docking positions of two adjacent sets of transfer mechanism units meet the requirements, and sends the judgment results to the staff.

[0036] The unit workshop distance sensor is a point-to-point wireless ranging sensor. The wireless ranging sensor measures the distance between the tail of the front transfer mechanism unit and the receiving part of the rear transfer mechanism unit, ensuring that the distance is within a set threshold range. If the distance exceeds the set threshold range, a signal is sent to the worker.

[0037] S4: The amount of coal transported is monitored and statistically analyzed in real time by the conveying capacity monitoring device 8 installed on the transfer mechanism unit.

[0038] In some embodiments, the conveying volume monitoring device 8 is a visual acquisition device, which counts the amount of coal transported by monitoring the conveying section.

[0039] In some embodiments, the conveying volume monitoring device 8 is a belt scale, which directly counts the amount of coal transported at the conveying section.

[0040] S5: The distance between the transfer mechanism unit 6 and the roadway side is measured in real time by the single vehicle and roadway side distance measuring device 4 set on both sides of the transfer mechanism unit 6.

[0041] The single vehicle and roadway side distance measuring device 4 is an ultrasonic and laser ranging device that collects the distance between the transfer mechanism unit and the coal wall side in real time. When the distance does not meet the safety requirements, it sends a signal to the staff.

[0042] S6: The tail transfer mechanism unit is connected to the transfer belt conveyor to transfer the coal onto the transfer belt conveyor.

[0043] Distance sensor 1, unit workshop docking sensor 2, unit workshop distance sensor 3, single vehicle and roadway side distance measuring device 4, unloading position measuring device 5, and conveying volume monitoring device 8 are all connected to data acquisition device 7, which transmits the processed signals to the staff.

[0044] A discharge position measuring device is installed on the transfer mechanism unit at the tail end. The discharge position measuring device adopts a visual acquisition device to collect images and determine whether the discharge port of the transfer mechanism unit at the tail end is connected to the coal transfer carrier belt. If it is not connected to the coal transfer carrier belt, a signal is sent to the staff.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-stage tandem transfer and transportation method for coal mining, characterized in that, Includes the following steps, S1: Multiple sets of telescopic and self-moving transfer mechanism units are connected end to end behind the tunneling equipment. The transfer mechanism units move forward with the tunneling equipment. The transfer mechanism unit includes a traveling part, a rotating unit is provided on the traveling part, a rotary table assembly is installed on the rotating unit, one end of the rotary table assembly is a receiving part, and the other end is connected to a first-level telescopic unit and a second-level telescopic unit in sequence. The end of the second-level telescopic unit is installed on a follow-up support and connected to a third-level telescopic unit. In step S1, when the tunneling equipment moves forward, the first group of transfer mechanism units moves forward synchronously with the tunneling equipment, and the first group of transfer mechanism units is connected between the tunneling equipment and the coal transfer carrier belt conveyor; when the first group of transfer mechanism units extends to its maximum distance, the second group of transfer mechanism units follows and connects to the tail of the first group of transfer mechanism units between the coal transfer carrier belt conveyor and the coal transfer carrier belt conveyor; subsequent groups of transfer mechanism units use the same method to connect the tunneling equipment and the coal transfer carrier belt conveyor. S2: The distance between the front end of the transfer mechanism unit and the tunneling equipment is measured in real time by a distance sensor. The transfer mechanism unit at the front end and the tunneling equipment maintain a suitable distance so that the coal mined by the tunneling equipment can be directly transferred to the transfer mechanism unit at the front end. S3: Unit workshop docking sensors and unit workshop distance sensors are set at the docking positions of two adjacent sets of transfer mechanism units. The unit workshop docking sensors control the docking positions of the two sets of transfer mechanism units to ensure that the docking positions are correct, and the unit workshop distance sensors control the distance between the two sets of transfer mechanism units to ensure that coal does not fall during transfer. S4: The amount of coal transported is monitored and statistically analyzed in real time through the conveying capacity monitoring device installed on the transfer mechanism unit; S5: The distance between the transfer mechanism unit and the roadway side is measured in real time by the single vehicle and roadway side distance measuring device set on both sides of the transfer mechanism unit; S6: The tail transfer mechanism unit is connected to the transfer belt conveyor to transfer the coal onto the transfer belt conveyor.

2. The multi-stage tandem transfer and transportation coal mining method according to claim 1, characterized in that, In step S2, the distance sensor specifically measures the distance between the discharge port and the receiving section of the tunneling equipment. This distance is sufficient to allow the coal from the discharge port to fall into the receiving section.

3. The multi-stage tandem transfer and transportation coal mining method according to claim 1, characterized in that, In step S3, the unit workshop docking sensor is a vision acquisition device. The vision acquisition device acquires adjacent images, processes the images, determines whether the docking positions of two adjacent sets of transfer mechanism units meet the requirements, and sends the determination result to the staff.

4. The multi-stage tandem transfer and transportation coal mining method according to claim 1, characterized in that, In step S3, the unit workshop distance sensor is a point-to-point wireless ranging sensor. The wireless ranging sensor measures the distance between the tail of the front transfer mechanism unit and the receiving part of the rear transfer mechanism unit, ensuring that the distance is within a set threshold range. If the distance exceeds the set threshold range, a signal is sent to the worker.

5. The multi-stage tandem transfer and transportation coal mining method according to claim 1, characterized in that, In step S4, the conveying volume monitoring device is a visual acquisition device, which counts the amount of coal transported by monitoring the conveying cross section.

6. The multi-stage tandem transfer and transportation coal mining method according to claim 1, characterized in that, In step S4, the conveying volume monitoring device is a belt scale, which directly counts the amount of coal transported.

7. The multi-stage tandem transfer and transportation coal mining method according to claim 1, characterized in that, In step S5, the distance measurement device between the single vehicle and the roadway sidewall is an ultrasonic and laser ranging device, which collects the distance between the transfer mechanism unit and the coal wall sidewall in real time. When the distance does not meet the safety requirements, a signal is sent to the staff.

8. The multi-stage tandem transfer and transportation coal mining method according to claim 1, characterized in that, The tail transfer mechanism unit is equipped with a vision acquisition device to acquire images and determine whether the discharge port of the tail transfer mechanism unit is connected to the coal transfer conveyor belt. If it is not connected to the coal transfer conveyor belt, a signal is sent to the staff.

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