Draw shaft material level detection device

Abstract

The invention relates to a draw shaft material level detection device which comprises an outer pulling steel wire rope, a six-section galvanized pipe, a safety ring, a safety steel wire rope and a material level sensor hanging bucket, the outer pulling steel wire rope is sequentially connected with the safety ring (3) and the safety steel wire rope (4), the hanging bucket is arranged on the safety steel wire rope, and the outer pulling steel wire rope (1) is used for dragging the safety ring (3) and the material level sensor hanging bucket (5). The lifting of the material level sensor bucket (5) is realized by externally pulling the steel wire rope (1), and the material level is measured. The technical scheme is ingenious in design, compact in structure and easy to operate, and the lifting mode of the measuring tool can be freely collected and released.

Description

Technical Field

[0001] The invention relates to a detection device, in particular to a chute material level detection device, and belongs to the technical field of chute material level detection. Background Art

[0002] Meishan Iron and Steel Co., Ltd. Mining Branch is an underground mining enterprise, and the fluctuation range of the ore discharge capacity of the chute is very large. In order to enable the chute to continuously discharge ore and ensure the normal production of the mine, a certain amount of ore must be stored in the chute. The monitoring of the ore level of the chute unloading ore is extremely important for underground mines. The main functions of the depth measurement are as follows: through the measurement data of the depth, the amount of ore collected in the shaft is estimated; according to the ore collection amount of each chute shaft, the production scheduling is reasonably arranged; the drop of the chute is generally high. In order to avoid the weight impact force damaging the shaft wall or the ore discharge facilities at the bottom of the shaft when pouring the ore, a certain amount of ore needs to be reserved at the bottom of the chute to buffer the impact force generated by the ore falling from a high place. The measurement of ore level in the mine chute system has always been a difficult problem, and it is difficult to have an accurate and reliable measurement method. At present, the main detection method commonly used in mines is to rely on manual level monitoring through visual observation, heavy hammers, ropes, etc., which has problems such as low measurement efficiency and large errors. Therefore, a chute material level detection method is urgently needed to reduce the measurement interference caused by factors such as dust concentration and air humidity, and provide accurate material level calculation data for the production workshop. Summary of the invention

[0003] The present invention is aimed at the technical problems existing in the prior art and provides a chute material level detection device. The technical solution is ingeniously designed, compact in structure, simple to operate, and can freely retract and release the lifting mode of the measuring tool.

[0004] In order to achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: a chute material level detection device, the detection device comprises an external pull wire rope, a 6-point galvanized pipe, a safety ring, a safety wire rope and a material level sensor bucket, the external pull wire rope is sequentially connected to the safety ring and the safety wire rope, and the bucket is arranged on the safety wire rope. The external pull wire rope is used to drag the safety ring and the material level sensor bucket, and the material level sensor bucket is lifted and lowered by the external pull wire rope to measure the material level.

[0005] As an improvement of the present invention, the safety ring is linked together by three links, and is mainly used to prevent the safety wire rope from being entangled and overlapped, and to buffer the release of potential energy when the material level sensor bucket is retracted or released too quickly, so as to prevent the sensor bucket from being damaged by scratching the wall of the chute due to improper retraction or release.

[0006] As an improvement of the present invention, the material level sensor bucket adopts FMCW "frequency modulated continuous wave" technology, which has strong anti-interference ability and high measurement accuracy. The data can be directly fed back to the computer terminal, which is convenient for the calculation of the chute material level.

[0007] FMCW "Frequency Modulated Continuous Wave" technology is the working principle of radar microwave level meter. This technology uses high-frequency signals. To address the magnetic interference of ore, the high-frequency signal used is 24 GHz. Compared with ToF technology: ToF uses time to measure distance, while FMCW uses frequency to measure distance, and has stronger anti-interference ability than ToF.

[0008] The entire signal connection and transmission: FMCW collects signals, and the data is transmitted to the signal acquisition terminal using a network cable. The signal acquisition terminal uses the WIF6 module to transmit the collected data. In order to prevent data loss, a 36V lighting line is used throughout the underground tunnel, and a network point station is designed to build a bridge, transmit wireless data to the signal receiver, and then transmit the signal to the ground control room via optical fiber.

[0009] As an improvement of the present invention, the length of the 6-point galvanized pipe 2 is 1.5-2.5 meters, preferably 2 meters.

[0010] As an improvement of the present invention, the safety ring effectively limits the position when the sensor bucket is retracted to the 6-point galvanized pipe mouth to prevent the safety wire rope from being entangled.

[0011] A chute material level detection device, the detection method is as follows: a 6-point galvanized pipe is placed on the right chute dam or the left chute dam, and the sensor bucket can be positioned in the chute mouth by human up and down, left and right, front and back operations, and the sensor bucket is lifted and lowered in the chute by human retracting and releasing the external wire rope (1), so as to quickly detect the material level; the material level sensor bucket measurement data is fed back to the computer in time, and the dispatcher accurately calculates the ore discharge amount of each chute according to the material level in the detected chute, which is more convenient for reasonably arranging the next work of the production unit's recovery, mining, and rock drilling units. This operation method is simple, easy to retract and release, and easy to move, and can quickly detect the material level in multiple chutes.

[0012] Compared with the prior art, the present invention has the following advantages: 1) the tool is easy to carry, simple to operate, the measuring points are free and not restricted by space, the manufacturing cost is low, and the materials are easy to obtain; 2) the method of using the tool to detect the material level in the chute reduces the measurement interference caused by factors such as dust concentration and air humidity, and measures the depth of each point in the chute accurately, which is convenient for accurately calculating the ore reserves in the chute, facilitating the dispatch of accurate data and coordinating the ore discharge of each horizontal chute, and the designed measuring equipment connector limit mode prevents the rope from being entangled and damaged; 3) the designed measuring tool operation method can freely measure the ore depth of each point in the chute, which is convenient for accurately estimating the ore reserves in the chute. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the chute material level detection device.

[0014] Figure 2This is the working diagram of the chute material level detection device.

[0015] In the figure: 1. External pull wire rope, 2. 6-point galvanized pipe, 3. Safety ring, 4. Safety wire rope, 5. Material level sensor bucket, 6. Chute, 7. Right chute dam, 8. Left chute dam, 9. Right transport tunnel ground, 10. Left transport tunnel ground, 11. FMCW detector, 12. Signal connecting line, 13. Signal acquisition terminal, 14. Network point station, 15. Signal receiver. DETAILED DESCRIPTION

[0016] In order to deepen the understanding of the present invention, the present embodiment is described in detail below with reference to the accompanying drawings.

[0017] Example 1: See Figure 1 A chute material level detection device, the detection device includes an external pull wire rope 1, a 6-point galvanized pipe 2, a safety ring 3, a safety wire rope 4 and a material level sensor bucket 5, the external pull wire rope is connected to the safety ring 3 and the safety wire rope 4 in sequence, and the bucket 5 is set on the safety wire rope 4. The externally pulled steel wire rope 1 is used to drag the safety ring 3 and the material level sensor bucket 5. The material level sensor bucket 5 is lifted and lowered by the externally pulled steel wire rope 1 to measure the material level. The safety ring 3 is connected by three interlocking rings, which is mainly used to prevent the safety steel wire rope 4 from being entangled and overlapped, and to buffer the release of potential energy when the material level sensor bucket 5 is retracted and released too quickly, so as to prevent the sensor bucket 5 from being damaged by scratching the wall of the chute due to improper retraction and release. The material level sensor bucket 5 adopts FMCW "frequency modulated continuous wave" technology. FMCW "frequency modulated continuous wave" technology is the working principle of radar microwave level meter. This technology adopts high-frequency signals. For the magnetic interference of ore, the high frequency used is 24GHz signal. Compared with ToF technology: ToF uses time to measure distance, while FMCW uses frequency to measure distance, and has stronger anti-interference ability than ToF. It has strong anti-interference ability and high measurement accuracy. The data can be directly fed back to the computer, which is convenient for calculating the material level of the chute. The length of the 6-point galvanized pipe 2 is 1.5-2.5 meters, preferably 2 meters. The safety ring 3 effectively limits the position when the sensor bucket 5 is collected to the 6-point galvanized pipe 2 to prevent the safety wire rope 4 from being entangled. In the above scheme, a 2-meter-long 6-point galvanized pipe is cut with a cutting machine, and the two ends are polished and smoothed with a grinding wheel so that the wire rope can slide freely from the inside of the galvanized pipe. Select 3 chains with a width slightly larger than the galvanized pipe for the connection between the wire rope and the material level sensor bucket and the free extension and retraction limit of the rope.

[0018] Example 2: See Figure 1 , a chute material level detection device, when in use, such as Figure 1As shown, the detection method is as follows: place the 6-point galvanized pipe 2 on the right side of the well dam 7 or the left side of the well dam 8, and the sensor bucket 5 can be positioned in the well mouth by manpower up and down, left and right, front and back operations. The sensor bucket 5 is lifted and lowered in the well by manpower retracting and releasing the external wire rope 1 to quickly detect the material level; the material level sensor bucket 5 measurement data is fed back to the computer in time, and the dispatcher calculates the amount of ore released in each well according to the material level in the well, which is more convenient for reasonably arranging the next work of the production unit's recovery, mining, and rock drilling units. This operation method is simple, easy to retract and release, and easy to move, and can quickly detect the material level in multiple wells.

[0019] Embodiment 3: The entire signal connection transmission: FMCW collects the signal, and the data is transmitted to the signal acquisition terminal using a network cable. The signal acquisition terminal uses a WIF6 module to transmit the collected data. In order to prevent the entire data from being lost, a 36V lighting line is used in the entire underground tunnel, and a network point station is designed for bridge building. The wireless data is transmitted to the signal receiver, and then the signal is transmitted to the ground control room by optical fiber.

[0020] It should be noted that the above embodiments are not intended to limit the protection scope of the present invention, and equivalent changes or substitutions made on the basis of the above technical solutions all fall within the protection scope of the claims of the present invention.

Claims

1. A chute material level detection device, characterized in that: The detection device comprises an external pull wire rope, a 6-point galvanized pipe, a safety ring, a safety wire rope and a material level sensor bucket. The external pull wire rope is connected to the safety ring (3) and the safety wire rope (4) in sequence. The bucket is arranged on the safety wire rope. The external pull wire rope (1) is used to drag the safety ring (3) and the material level sensor bucket (5). The material level sensor bucket (5) is lifted and lowered by the external pull wire rope (1) to measure the material level.

2. The chute material level detection device according to claim 1, characterized in that: The safety ring (3) is connected through three links and is mainly used to prevent the safety steel wire rope (4) from being entangled and overlapped.

3. The chute material level detection device according to claim 1, characterized in that: The material level sensor bucket (5) adopts FMCW "frequency modulated continuous wave" technology, using a high frequency signal of 24 GHz. The entire signal connection transmission: FMCW collects the signal, and the data is transmitted to the signal collection terminal using a network cable. The signal collection terminal uses a WIF6 module to transmit the collected data. In order to prevent the entire data from being lost, a 36V lighting line is used in the entire underground tunnel, and a network point station is designed for bridging, transmitting wireless data to the signal receiver and then transmitting the signal to the ground control room via optical fiber.

4. The chute material level detection device according to claim 1, characterized in that: The length of 6-point galvanized pipe is 1.5-2.5 meters.

5. The chute material level detection device according to claim 1, characterized in that: The safety ring (3) effectively limits the position when the sensor bucket (5) is retracted to the mouth of the 6-point galvanized pipe (2), thereby preventing the safety wire rope (4) from being entangled.

6. The chute material level detection device according to claim 1, characterized in that: The detection method is as follows: a 6-point galvanized pipe (2) is placed on the right side chute dam (7) or the left side chute dam (8), and the sensor bucket (5) is manually operated up and down, left and right, and forward and backward to realize the position of the sensor bucket (5) in the chute mouth. The sensor bucket (5) is manually retracted and released to lift and lower the sensor bucket (5) in the chute, so as to quickly realize the material level detection; the measurement data of the material level sensor bucket (5) is fed back to the computer in time, and the scheduling is carried out to accurately calculate the ore discharge amount of each chute according to the material level in the detected chute. For the area where the chute is full, the equipment can be arranged to leave the area, and the ore can be discharged from the area with less ore in the chute. In this way, the production process arrangement is reasonably adjusted to maximize saturation operation.

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