Taphole depth measuring device for blast furnace

Abstract

The utility model discloses an opening machine of real -time measurement blast furnace open mouth depth, including opening machine girder, opening machine girder upper portion one end sets up drive arrangement, drive arrangement connects rock drill, and rock drill is located opening machine girder bottom one end, and drive arrangement drives rock drill to slide in opening machine girder bottom, and opening machine girder bottom other end sets up bracket, and rock drill output end connects drill rod, and drill rod extension direction penetrates bracket, opening machine girder and the axial parallel setting of drill rod, opening machine girder sets up mouth scale along rock drill movement direction. The utility model has solved the problem that the prior art is difficult to obtain accurate mouth breaking -through depth according to actual situation.

Description

Technical Field

[0001] This utility model belongs to the field of blast furnace ironmaking technology, specifically relating to a tapping machine for real-time measurement of the tapping depth of a blast furnace. Background Technology

[0002] In the process of blast furnace ironmaking, it is necessary to use a taphole opener to open the taphole. The taphole opening depth directly affects the taphole quality. Improving the taphole depth qualification rate and timely removal of slag and iron are among the most important indicators of furnace front-end work. The difficulty of taphole depth maintenance, in addition to the influence of taphole clay quality and furnace working factors, is mainly due to the adjustment of the amount of clay removed according to the changes in taphole depth. Only by ensuring a suitable taphole depth can taphole maintenance and smooth furnace operation be facilitated.

[0003] Although the standards for controlling the taphole depth and the amount of mud used to block the taphole vary depending on the furnace volume, the taphole opening technology tends to favor the use of larger diameter drill bits. Larger drill bits are beneficial for quickly removing slag and iron. In terms of taphole depth control, there is a preference for excessively deep tapholes, but this can easily lead to problems such as excessive mud used to block the taphole, difficulty in opening the taphole, easy breakage of the taphole, premature movement of the taphole tip, and frequent iron seepage. Excessively deep tapholes waste taphole mud consumption and increase ironmaking costs. Furthermore, the drill rod stays in the taphole for a long time, which can easily damage the drill bit, increase the frequency of drill bit replacement, and increase costs. Excessively deep tapholes can also lead to a low slag exposure rate during the tapping process, unstable slag and iron liquid level in the hearth, and frequent slag and iron buildup in the furnace. However, if the taphole depth is too shallow, it will lead to poor slag and iron discharge from the blast furnace, abnormal furnace conditions due to slag and iron buildup, and even safety accidents such as large-scale hot metal overflow. Abnormal taphole operation will cause accidents at the furnace front and incomplete slag and iron removal inside the furnace, resulting in collapses and suspended materials. This will easily exacerbate the erosion and scouring of the hearth carbon bricks, threatening hearth safety and the longevity of the blast furnace. In actual production applications, it is necessary to monitor the taphole depth of the blast furnace in real time. Operators inside the furnace should adjust the taphole depth accordingly to stabilize the taphole depth and the amount of slurry blocking the taphole, maintaining a normal taphole diameter. This is beneficial for better blast furnace longevity, improving blast furnace operation and management, and reducing the labor intensity of blast furnace front-line workers.

[0004] Current automatic detection and control technology for blast furnace taphole depth typically involves installing an encoder on the taphole machine itself to detect the taphole machine's advance speed and distance to calculate the taphole depth. While this can obtain the taphole depth, it is difficult to accurately determine whether the taphole is fully open and to obtain an accurate taphole opening depth based on actual conditions. This may result in the taphole opening depth being too shallow or too deep, affecting the taphole machine's drilling and retraction time. Utility Model Content

[0005] The purpose of this invention is to provide a tapping machine for real-time measurement of the tapping depth of a blast furnace, which solves the problem that existing technologies cannot accurately obtain the tapping depth based on actual conditions.

[0006] The technical solution adopted in this utility model is: a tapping machine for real-time measurement of the tapping depth of a blast furnace, including a tapping machine beam, a drive device installed at one end of the upper part of the tapping machine beam, the drive device being connected to a rock drill, the rock drill being located at one end of the bottom of the tapping machine beam, the drive device driving the rock drill to slide at the bottom of the tapping machine beam, a bracket installed at the other end of the bottom of the tapping machine beam, a drill rod connected to the output end of the rock drill, the drill rod extending through the bracket; the tapping machine beam and the drill rod are arranged axially parallel; a tapping scale is installed on the tapping machine beam along the movement direction of the rock drill.

[0007] The feature of this utility model is that, The rock drill has a guide rail along its extension direction. A limit block is installed on the guide rail. The rock drill trolley is slidably engaged in the guide rail. The drive device includes a drive motor and a conveyor belt. The drive motor is connected to the drive wheel of the conveyor belt. The conveyor belt is connected to the rock drill trolley. The bottom of the rock drill trolley is connected to the rock drill.

[0008] The iron-mouth scale is arranged along the length of the opening machine beam. The end near the drive device is set with a scale line indicating the zero depth. The scale lines are marked sequentially along the extension length of the drill rod according to the interval.

[0009] Depth markers are installed at the 1.0m, 1.5m, 2m, 2.5m, 3.0m, and 3.5m positions on the iron tap mark scale. These markers are fixed to the main beam of the tap mark machine with fixing pins. The depth markers correspond to the six iron tap mark depth segments. The current iron tap mark depth can be known at any time according to the position of the rock drill on the tap mark machine trolley.

[0010] A rotating bearing is installed on the bracket, and the drill rod is sleeved inside the rotating bearing. The center of the rotating bearing is coplanar with the central axis of the drill rod.

[0011] A displacement sensor is fixedly installed on the rock drill.

[0012] The data collected by the displacement sensor is transmitted to the controller via electrical connection to control the rock drill and drive motor to move.

[0013] Multiple drill bodies are spaced apart on the drill pipe, with the diameter of the drill bodies gradually increasing from the front end to the rear end.

[0014] The beneficial effects of this utility model are as follows: This utility model, an opening machine for real-time measurement of the taphole depth of a blast furnace, enables stable control of the taphole depth for blast furnaces with different capacities by accurately obtaining the taphole depth and the amount of mud applied to the taphole. It avoids errors caused by manual experience in obtaining taphole mud, prevents the taphole depth from being too deep or too shallow, reduces the consumption of taphole mud, shortens the taphole opening time, saves costs, reduces hearth erosion, improves the stability of blast furnace slag discharge, and enhances the accuracy of taphole sealing. This largely ensures the quality of blast furnace iron production, reduces blast furnace losses, and achieves smooth blast furnace operation. It also enables rapid and precise positioning of the opening machine and rock drill, lowers the technical requirements for maintenance personnel, reduces the time required for taphole depth measurement, reduces the labor intensity of maintenance personnel, significantly improves work efficiency, and has a wide range of applications. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the taphole opening machine for real-time measurement of the taphole depth of a blast furnace according to this utility model; In the diagram, 1. Opening machine beam, 2. Rock drill, 3. Bracket, 4. Drive unit, 5. Iron scale. Detailed Implementation

[0016] The present invention will now be described in detail with reference to its embodiments and accompanying drawings.

[0017] Example 1 This utility model provides an tapping machine for real-time measurement of the tapping depth of a blast furnace, the structure of which is as follows: Figure 1 As shown, the machine includes a rock drill beam 1, a drive device 4 is installed at one upper end of the rock drill beam 1, the drive device 4 is connected to a rock drill 2, the rock drill 2 is located at one bottom end of the rock drill beam 1, the drive device 4 drives the rock drill 2 to slide at the bottom of the rock drill beam 1, a bracket 3 is installed at the other bottom end of the rock drill beam 1, the output end of the rock drill 2 is connected to a drill rod, and the drill rod extends through the bracket 3; the rock drill beam 1 is arranged parallel to the axis of the drill rod; an iron scale 5 is installed on the rock drill beam 1 along the movement direction of the rock drill 2.

[0018] Example 2 This utility model provides a taphole machine for real-time measurement of the taphole depth of a blast furnace, including a taphole machine beam 1. A drive device 4 is installed at one upper end of the taphole machine beam 1, and the drive device 4 is connected to a rock drill 2. The rock drill 2 is located at one bottom end of the taphole machine beam 1. The drive device 4 drives the rock drill 2 to slide at the bottom of the taphole machine beam 1. A bracket 3 is installed at the other bottom end of the taphole machine beam 1. A drill rod is connected to the output end of the rock drill 2, and the drill rod extends through the bracket 3. The taphole machine beam 1 is arranged parallel to the axis of the drill rod. A taphole scale 5 is installed on the taphole machine beam 1 along the movement direction of the rock drill 2. Based on embodiment 1, in this embodiment, a guide rail is installed on the taphole machine beam 1 along the extension direction. A limit block is installed on the guide rail, and a taphole machine trolley is slidably engaged in the guide rail. The drive device 4 includes a drive motor and a conveyor belt. The drive motor is connected to the drive wheel of the conveyor belt, and the conveyor belt is connected to the taphole machine trolley. The bottom of the taphole machine trolley is connected to the rock drill 2. The drive motor drives the taphole machine trolley to move the rock drill 2 back and forth along the guide rail along the axis of the taphole machine beam 1.

[0019] Example 3 This utility model provides a taphole machine for real-time measurement of the taphole depth of a blast furnace. It includes a taphole machine beam 1, with a drive device 4 at one upper end of the beam 1. The drive device 4 is connected to a rock drill 2, which is located at one bottom end of the beam 1. The drive device 4 drives the rock drill 2 to slide along the bottom of the beam 1. A bracket 3 is located at the other bottom end of the beam 1, and a drill rod is connected to the output end of the rock drill 2, extending through the bracket 3. The taphole machine beam 1 is axially parallel to the drill rod. A taphole scale 5 is installed on the beam 1 along the direction of movement of the rock drill 2. A guide rail is installed on the beam 1 along its extension direction, with a limit block on the guide rail. A taphole machine trolley is slidably engaged within the guide rail. The drive device 4 includes a drive motor and a conveyor belt. The drive motor is connected to the drive wheel of the conveyor belt, which is connected to the taphole machine trolley. The bottom of the taphole machine trolley is connected to the rock drill 2. The drive motor drives the taphole machine trolley, causing the rock drill 2 to reciprocate along the guide rail along the axis of the beam 1. Based on Example 2, in this example, the iron tap scale 5 is arranged along the length of the opening machine beam 1, and a zero-point scale line indicating the depth is set at the end near the drive device 4. The scale lines are marked sequentially along the extension length of the drill rod according to the interval distance, which is the depth from the lower end of the drill rod to the iron tap.

[0020] Example 4 This utility model provides a taphole machine for real-time measurement of the taphole depth of a blast furnace. It includes a taphole machine beam 1, with a drive device 4 at one upper end of the beam 1. The drive device 4 is connected to a rock drill 2, which is located at one bottom end of the beam 1. The drive device 4 drives the rock drill 2 to slide along the bottom of the beam 1. A bracket 3 is located at the other bottom end of the beam 1, and a drill rod is connected to the output end of the rock drill 2, extending through the bracket 3. The taphole machine beam 1 is axially parallel to the drill rod. A taphole scale 5 is installed on the beam 1 along the direction of movement of the rock drill 2. A guide rail is installed on the beam 1 along its extension direction, with a limit block on the guide rail. A taphole machine trolley is slidably engaged within the guide rail. The drive device 4 includes a drive motor and a conveyor belt. The drive motor is connected to the drive wheel of the conveyor belt, which is connected to the taphole machine trolley. The bottom of the taphole machine trolley is connected to the rock drill 2. The drive motor drives the taphole machine trolley, causing the rock drill 2 to reciprocate along the guide rail along the axis of the beam 1. The taphole gauge 5 is arranged along the length of the rock drill beam 1. A zero-point depth indicator is set at the end near the drive device 4. Graduation lines are marked sequentially along the drill rod extension length at intervals, representing the depth from the bottom of the drill rod to the taphole. Based on embodiment 3, this embodiment adds depth markers at positions of 1.0m, 1.5m, 2m, 2.5m, 3.0m, and 3.5m on the taphole gauge 5. These markers are fixed to the rock drill beam with pins, corresponding to six taphole depth segments. The current taphole depth can be determined at any time based on the position of the rock drill on the rock drill trolley.

[0021] Example 5 This utility model provides a taphole machine for real-time measurement of the taphole depth of a blast furnace. It includes a taphole machine beam 1, with a drive device 4 at one upper end of the beam 1. The drive device 4 is connected to a rock drill 2, which is located at one bottom end of the beam 1. The drive device 4 drives the rock drill 2 to slide along the bottom of the beam 1. A bracket 3 is located at the other bottom end of the beam 1, and a drill rod is connected to the output end of the rock drill 2, extending through the bracket 3. The taphole machine beam 1 is axially parallel to the drill rod. A taphole scale 5 is installed on the beam 1 along the direction of movement of the rock drill 2. A guide rail is installed on the beam 1 along its extension direction, with a limit block on the guide rail. A taphole machine trolley is slidably engaged within the guide rail. The drive device 4 includes a drive motor and a conveyor belt. The drive motor is connected to the drive wheel of the conveyor belt, which is connected to the taphole machine trolley. The bottom of the taphole machine trolley is connected to the rock drill 2. The drive motor drives the taphole machine trolley, causing the rock drill 2 to reciprocate along the guide rail along the axis of the beam 1. The taphole scale 5 is arranged along the length of the rock drill beam 1. Near the limit block at one end of the drive device 4, a scale line indicating the zero depth is set. The scale lines are marked sequentially along the drill rod's extension length at intervals, representing the taphole depth from the bottom of the drill rod. Depth markers are installed at positions of 1.0m, 1.5m, 2m, 2.5m, 3.0m, and 3.5m on the taphole scale 5, and fixed to the rock drill beam with pins. These markers correspond to six taphole depth segments, allowing the current taphole depth to be known at any time based on the position of the rock drill on the rock drill trolley. Based on embodiment 4, this embodiment features a rotating bearing on the bracket 3, with the drill rod sleeved inside the bearing. The center of the rotating bearing is coplanar with the central axis of the drill rod.

[0022] Example 6 This utility model provides a taphole machine for real-time measurement of the taphole depth of a blast furnace. It includes a taphole machine beam 1, with a drive device 4 at one upper end of the beam 1. The drive device 4 is connected to a rock drill 2, which is located at one bottom end of the beam 1. The drive device 4 drives the rock drill 2 to slide along the bottom of the beam 1. A bracket 3 is located at the other bottom end of the beam 1, and a drill rod is connected to the output end of the rock drill 2, extending through the bracket 3. The taphole machine beam 1 is axially parallel to the drill rod. A taphole scale 5 is installed on the beam 1 along the direction of movement of the rock drill 2. A guide rail is installed on the beam 1 along its extension direction, with a limit block on the guide rail. A taphole machine trolley is slidably engaged within the guide rail. The drive device 4 includes a drive motor and a conveyor belt. The drive motor is connected to the drive wheel of the conveyor belt, which is connected to the taphole machine trolley. The bottom of the taphole machine trolley is connected to the rock drill 2. The drive motor drives the taphole machine trolley, causing the rock drill 2 to reciprocate along the guide rail along the axis of the beam 1. The taphole gauge 5 is arranged along the length of the rock drill beam 1. Near the limit block at one end of the drive unit 4, a zero-depth indicator line is set. Along the drill rod's extension length, scale lines are marked at intervals, representing the taphole depth from the bottom of the drill rod. Depth markers are placed at 1.0m, 1.5m, 2m, 2.5m, 3.0m, and 3.5m positions on the taphole gauge 5, and fixed to the rock drill beam with pins. These markers correspond to six taphole depth segments, allowing the current taphole depth to be determined based on the position of the rock drill on the rock drill trolley. A rotating bearing is installed on the bracket 3, with the drill rod sleeved inside. The center of the rotating bearing is coplanar with the central axis of the drill rod. Based on Example 5, in this example, a displacement sensor is fixedly installed on the rock drill 2. By measuring the moving distance of the rock drill 2, the accuracy and real-time performance of depth measurement are improved, as well as the precision and stability of the blast furnace taphole depth. This not only significantly reduces the difficulty of equipment deployment but also greatly extends the service life of the equipment, making it easier for subsequent equipment maintenance and upgrades.

[0023] Example 7 This utility model provides a taphole machine for real-time measurement of the taphole depth of a blast furnace. It includes a taphole machine beam 1, with a drive device 4 at one upper end of the beam 1. The drive device 4 is connected to a rock drill 2, which is located at one bottom end of the beam 1. The drive device 4 drives the rock drill 2 to slide along the bottom of the beam 1. A bracket 3 is located at the other bottom end of the beam 1, and a drill rod is connected to the output end of the rock drill 2, extending through the bracket 3. The taphole machine beam 1 is axially parallel to the drill rod. A taphole scale 5 is installed on the beam 1 along the direction of movement of the rock drill 2. A guide rail is installed on the beam 1 along its extension direction, with a limit block on the guide rail. A taphole machine trolley is slidably engaged within the guide rail. The drive device 4 includes a drive motor and a conveyor belt. The drive motor is connected to the drive wheel of the conveyor belt, which is connected to the taphole machine trolley. The bottom of the taphole machine trolley is connected to the rock drill 2. The drive motor drives the taphole machine trolley, causing the rock drill 2 to reciprocate along the guide rail along the axis of the beam 1. The taphole gauge 5 is arranged along the length of the rock drill beam 1. Near the limit block at one end of the drive unit 4, a zero-depth indicator line is set. Along the drill rod's extension length, scale lines are marked at intervals, representing the taphole depth from the bottom of the drill rod. Depth markers are placed at 1.0m, 1.5m, 2m, 2.5m, 3.0m, and 3.5m positions on the taphole gauge 5, and fixed to the rock drill beam with pins. These markers correspond to six taphole depth segments, allowing the current taphole depth to be determined based on the position of the rock drill on the rock drill trolley. A rotating bearing is installed on the bracket 3, with the drill rod sleeved inside. The center of the rotating bearing is coplanar with the central axis of the drill rod. A displacement sensor is fixedly installed on the rock drill 2. Based on Example 6, the data collected by the displacement sensor in this example is transmitted to the controller via electrical connection to control the rock drill 2 and the drive motor to move. This ensures that the taphole depth is within the control standard, creating conditions for timely and clean slag and iron removal from the blast furnace. The slag removal hit rate is increased to about 95%, avoiding the long-term residue of unremoved slag and iron in the blast furnace hearth, which would cause erosion of the bottom of the hearth. This largely ensures that the slag and iron in the bottom area of ​​the hearth can be smoothly discharged from the taphole, saving costs and reducing hearth erosion.

[0024] Example 8 This utility model provides a taphole machine for real-time measurement of the taphole depth of a blast furnace. It includes a taphole machine beam 1, with a drive device 4 at one upper end of the beam 1. The drive device 4 is connected to a rock drill 2, which is located at one bottom end of the beam 1. The drive device 4 drives the rock drill 2 to slide along the bottom of the beam 1. A bracket 3 is located at the other bottom end of the beam 1, and a drill rod is connected to the output end of the rock drill 2, extending through the bracket 3. The taphole machine beam 1 is axially parallel to the drill rod. A taphole scale 5 is installed on the beam 1 along the direction of movement of the rock drill 2. A guide rail is installed on the beam 1 along its extension direction, with a limit block on the guide rail. A taphole machine trolley is slidably engaged within the guide rail. The drive device 4 includes a drive motor and a conveyor belt. The drive motor is connected to the drive wheel of the conveyor belt, which is connected to the taphole machine trolley. The bottom of the taphole machine trolley is connected to the rock drill 2. The drive motor drives the taphole machine trolley, causing the rock drill 2 to reciprocate along the guide rail along the axis of the beam 1. The taphole gauge 5 is arranged along the length of the rock drill beam 1. Near the limit block at one end of the drive unit 4, a zero-depth indicator line is set. Along the drill rod's extension length, scale lines are marked at intervals, representing the taphole depth from the bottom of the drill rod. Depth markers are placed at 1.0m, 1.5m, 2m, 2.5m, 3.0m, and 3.5m positions on the taphole gauge 5, and fixed to the rock drill beam with pins. These markers correspond to six taphole depth segments, allowing the current taphole depth to be determined based on the position of the rock drill on the rock drill trolley. A rotating bearing is installed on the bracket 3, with the drill rod sleeved inside. The center of the rotating bearing is coplanar with the central axis of the drill rod. A displacement sensor is fixedly installed on the rock drill 2. The data collected by the displacement sensor is transmitted to the controller through an electrical connection. Based on Example 7, multiple drill bodies are spaced apart on the drill rod in this example. The diameter of the drill body gradually increases from the front end to the rear end, thereby improving the stability of blast furnace slag discharge, ensuring the quality of blast furnace iron discharge to a greater extent, reducing blast furnace losses, and achieving good blast furnace operation.

[0025] The working principle of this utility model of a taphole opening machine for real-time measurement of blast furnace taphole depth is as follows: A taphole scale 5 is fixed to the main beam of the taphole opening machine, ensuring uninterrupted operation. The machine measures the current taphole depth based on the change in the depth of the drill rod entering the taphole, facilitating taphole maintenance and reducing equipment complexity while improving measurement accuracy and real-time performance. Simultaneously with obtaining the taphole opening depth, the machine combines taphole opening status assessment to accurately determine the opening depth when the taphole is open. If the taphole is not open, the machine continues drilling to ensure it is open and molten iron flows out smoothly, preventing shallow tapholes and allowing the machine to retract the drill promptly. This avoids excessively deep tapholes and reduces the time the drill bit remains in the molten iron after the taphole is open, extending drill bit lifespan and reducing processing costs.

[0026] The working process of this utility model's taphole opening machine for real-time measurement of blast furnace taphole depth is as follows: First, check and confirm that the operator is wearing protective equipment (safety helmet, face mask, etc.). Prepare to open the taphole using the taphole opening machine. After turning the taphole, align the drill rod with the center point of the mud sleeve, and start the vibration and rotary advance modes. The rock drill 2 on the taphole opening machine trolley points to the corresponding position, such as 3.0m, and the taphole opens smoothly. During the taphole opening, the taphole opening machine trolley moves towards the side of the taphole opening machine beam 1 that needs to be tapped. The taphole opening machine trolley continues to move to the end of the taphole opening machine beam 1. During the retraction, the taphole opening machine trolley moves away from the side being tapped and finally returns to the initial position. Rotate out and reverse to exit the taphole opening machine trolley, and at the same time retract the taphole opening machine boom. The taphole opening work is completed. Repeat the taphole opening and retraction actions to continuously complete the taphole opening work.

[0027] This utility model relates to a taphole opening machine for real-time measurement of blast furnace taphole depth. Through real-time depth measurement, it can monitor changes in taphole depth in a timely manner, provide early warning of potential risks, and take corresponding measures to make adjustments, ensuring work safety. Without changing the original functional structure of the taphole opening machine, it has high accuracy and versatility, reduces the number of measurements and the workload of operators, improves the efficiency of measurement work, enhances the safety of the operation process, prevents accidents, and provides timely and efficient information on changes in taphole depth, thus providing conditions for taphole maintenance.

Claims

1. A tapping machine for real-time measurement of the tapping depth of a blast furnace, characterized in that, The machine includes a rock drill beam (1), a drive device (4) is installed at one end of the upper part of the rock drill beam (1), the drive device (4) is connected to a rock drill (2), the rock drill (2) is located at one end of the bottom of the rock drill beam (1), the drive device (4) drives the rock drill (2) to slide at the bottom of the rock drill beam (1), a bracket (3) is installed at the other end of the bottom of the rock drill beam (1), the output end of the rock drill (2) is connected to the drill rod, and the extension direction of the drill rod passes through the bracket (3); the rock drill beam (1) is set parallel to the axis of the drill rod; an iron scale (5) is set on the rock drill beam (1) along the movement direction of the rock drill (2).

2. The taphole machine for real-time measurement of blast furnace taphole depth as described in claim 1, characterized in that, The opening machine beam (1) is provided with a guide rail along the extension direction. A limit block is provided on the guide rail. The opening machine trolley is slidably connected in the guide rail. The driving device (4) includes a drive motor and a conveyor belt. The drive motor is connected to the drive wheel of the conveyor belt. The conveyor belt is connected to the opening machine trolley. The bottom of the opening machine trolley is connected to the rock drill (2).

3. The taphole machine for real-time measurement of blast furnace taphole depth as described in claim 2, characterized in that, The iron tap scale (5) is arranged along the length of the opening machine beam (1), and a zero-point scale line indicating the depth is set at one end near the drive device (4). The scale lines are marked sequentially along the extension length of the drill rod according to the interval distance.

4. The taphole machine for real-time measurement of blast furnace taphole depth as described in claim 3, characterized in that, Depth markers are set at the 1.0m, 1.5m, 2m, 2.5m, 3.0m and 3.5m positions of the iron tap scale (5), and are fixed to the main beam of the tapping machine with fixing pins. The depth markers correspond to the six iron tap depth segments, and the current iron tap depth can be known at any time according to the position of the rock drill on the tapping machine trolley.

5. The taphole machine for real-time measurement of blast furnace taphole depth as described in claim 4, characterized in that, A rotating bearing is provided on the bracket (3), and the drill rod is sleeved inside the rotating bearing. The center of the rotating bearing is coplanar with the central axis of the drill rod.

6. The taphole machine for real-time measurement of blast furnace taphole depth as described in claim 5, characterized in that, A displacement sensor is fixedly installed on the rock drill (2).

7. The taphole machine for real-time measurement of blast furnace taphole depth as described in claim 6, characterized in that, The data collected by the displacement sensor are all transmitted to the controller via electrical connection to control the rock drill (2) and drive motor to move.

8. The taphole machine for real-time measurement of blast furnace taphole depth as described in claim 7, characterized in that, Multiple drill bodies are spaced apart on the drill rod, with the diameter of the drill bodies gradually increasing from the front end to the rear end.

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