Blast furnace bell hopper

Abstract

The application discloses a blast furnace front opening machine and relates to the technical field of iron-making production equipment. The blast furnace front opening machine is characterized in that the bottom position of the rotary large arm is provided with a protection assembly, and the guide rail is cancelled; the protection assembly is a conveying belt structure, the annular belt body is made of metal material, and the movable trolley of the blast furnace front opening machine is located in the space surrounded by the annular belt body of the protection assembly; the protection assembly can not only block spatter for the movable trolley, but also drive the movable trolley to move as required; and the blast furnace front opening machine has the technical effects that the blast furnace front opening machine does not need to be cleaned frequently, movable parts are not prone to be damaged, the blast furnace front opening machine is convenient to use, and the service life is long.

Description

Technical Field

[0001] This invention relates to the field of ironmaking production equipment technology, and in particular to a blast furnace front opening machine. Background Technology

[0002] Blast furnace ironmaking is a common ironmaking method. Opening and plugging operations are crucial production links in front of the blast furnace. Opening operation involves using an opening machine to drill through the blast furnace taphole so that the molten iron generated inside the blast furnace can be discharged through the taphole channel. The blast furnace opening machine generally consists of a boom platform, rotating boom, boom head fixing device, mobile trolley (mobile rock drill), drill rod, power assembly and control unit.

[0003] In existing technologies, the movable trolley (mobile rock drill) and its guide rails of the blast furnace front opening machine are exposed to a harsh environment. Under the combined influence of dust, high temperature, and splashes, hard debris easily adheres and accumulates, which seriously affects the stable movement and operation of the movable trolley. Moreover, some debris (dust and splashes) adhering to the guide rails and other components will gradually detach as the movable trolley of the opening machine moves and fall or drift into the gaps of the moving parts of the opening machine (slewing bearing, guide slider, movable pin, etc.), causing the various parts of the furnace front opening machine to jam, slow down, make abnormal noises, or even get stuck, increasing safety risks, reducing service life, and affecting normal operation. Therefore, the furnace front opening machine needs to be cleaned frequently. However, frequent cleaning is not only difficult and labor-intensive, but also cumbersome.

[0004] Therefore, there is a need for a blast furnace front opening machine that does not require frequent cleaning, is not prone to damage to moving parts, is easy to use, and has a long service life. Summary of the Invention

[0005] This application provides a blast furnace front opening machine, which solves the technical problems of existing furnace front opening machines that require frequent manual cleaning, are prone to damage to moving parts, and have a cumbersome and labor-intensive cleaning process; it achieves the technical effects of a furnace front opening machine that does not require frequent cleaning, is less prone to damage to moving parts, is easy to use, and has a long service life.

[0006] This application provides a blast furnace front opening machine, including a boom platform, a rotating boom, a movable trolley, a chisel, and a protective assembly; The end of the rotating arm near the bottom has a through groove with the same length direction as its own length, and the bottom has a row of bottom positioning grooves; The movable trolley includes a front trolley, a rear trolley, a connecting telescopic rod, and an inclined telescopic rod; the connecting telescopic rod is positioned between the front trolley and the rear trolley; the inclined telescopic rod is an inclined rigid telescopic rod, one end of which is positioned at the end of the rear trolley and is embedded in the bottom positioning groove when extended. The main body of the protective component is a conveyor belt structure, the annular belt body is made of metal, and it passes through the through slot and surrounds the movable trolley; the annular belt body is provided with a through slot for the drill rod to pass through; the rear trolley is fixed to the inner ring of the annular belt body.

[0007] Furthermore, both the connecting telescopic rod and the inclined telescopic rod are fitted with telescopic sleeves for dust prevention.

[0008] Furthermore, the protective assembly includes a front load-bearing wheel, a rear load-bearing wheel, a wheel frame, and an annular belt. The front-mounted wheel is a cylindrical wheel, and there are two of them. They are positioned at the bottom of the rotating arm near the front end by a wheel frame. The rear-mounted wheel is positioned at the bottom of the rotating arm near the rear end via a wheel frame; The annular belt passes through the through groove and surrounds the movable trolley.

[0009] Furthermore, protective plates are positioned on both sides of the annular belt; The protective plate is a vertically placed rigid plate fixed on the wheel frame or the rotating arm, covering both sides of the space enclosed by the annular belt to prevent splashes from entering the inner ring of the annular belt and splashing onto other components within the enclosed space.

[0010] Furthermore, a plugging plate is positioned at the bottom of the annular belt; The blocking plate is a long, rigid plate that is tightly attached to the annular belt and fixed to the guard plate by a rigid bracket. It is used to block the through rod groove when it moves to a position close to the blocking plate.

[0011] Preferably, the rear carriage is provided with an insertion pin on the side away from the bottom surface of the rotating arm; the insertion pin does not affect the movement of the rear carriage when it is retracted; the rear carriage is not directly fixed to the annular belt. The annular belt body is provided with an insertion hole that matches the insertion pin; It also includes cleanup components; The cleaning component is disposed close to the annular belt and includes a brush, a storage container, and / or a vacuuming component.

[0012] Preferably, the cleaning assembly includes a brush, a storage box, and / or a vacuuming assembly; The abutting brush is positioned on the rotating arm or the wheel frame, near the tail end of the rotating arm and abutting against the annular belt. The storage box is a box with an open top, positioned on the rotating arm or wheel frame, directly below the contact brush; When the annular belt rotates, the abutment brush washes the annular belt that is moving against it, and the debris falls into the storage box. The vacuuming component is used to clean the outer ring of the annular belt by vacuuming. It is positioned at the front end of the rotating arm near the top and close to the annular belt.

[0013] Preferably, there are multiple insertion holes arranged along the length of the annular strip, with a spacing of more than 30 centimeters between them; Before opening the furnace, the insertion pin can be controlled to retract and the annular belt can be controlled to rotate after the drill rod is close to the furnace opening. Then the insertion pin can be controlled to extend and penetrate the insertion hole, so that most of the through rod groove enters and rotates the boom. This reduces the area of ​​the through rod groove exposed outside the boom, thereby reducing the possibility of splashes entering the space enclosed by the annular belt.

[0014] Preferably, the drill rod is rotatably connected to the front trolley and is composed of a drill rod head and a carrier rod threaded connection. The outer ring of the annular belt is provided with an abutting rod; The bottom of the rotating arm is equipped with a fixing clamp; the fixing clamp is located in the space enclosed by the annular belt, and there are two fixing clamps. After the fixing clamp clamps the falling drill rod head, it will make the drill rod head coaxial with the carrier rod. The top of the rotating arm is positioned with a bin; the rotating arm is provided with an input slot, a rod passage slot, and a delivery slot, and a baffle plate is provided at the bottom; the rod head in the bin will fall into the input slot, and under the push of the rod body, it will enter the delivery slot and be delivered onto the fixed clamp.

[0015] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: By optimizing and improving the structure of the existing furnace opening machine, a protective component is installed at the bottom of its rotating arm, and the guide rail is eliminated. The protective component is a conveyor belt structure, and its annular belt is made of metal. The movable trolley of the furnace opening machine is located in the space enclosed by the annular belt of the protective component. This protective component not only blocks splashes from the movable trolley but also drives the movable trolley to move as needed. This effectively solves the technical problems of the existing furnace opening machine, such as the need for frequent manual cleaning, easy damage to moving parts, cumbersome cleaning process, and high labor intensity. As a result, the furnace opening machine achieves the technical effects of not requiring frequent cleaning, being less prone to damage to moving parts, being easy to use, and having a long service life. Attached Figure Description

[0016] Figure 1 This is a simplified structural diagram of the blast furnace front opening machine of this application; Figure 2 This is a schematic diagram of the external structure of the blast furnace front opening machine of this application; Figure 3 This is a schematic diagram of the protective component. Figure 4This is a schematic diagram of the bottom structure of the rotating boom; Figure 5 This is a schematic diagram showing the positional relationship of the various components of the blast furnace front opening machine in this application; Figure 6 This is a schematic diagram showing the positional relationship of the various components at the bottom of the rotating boom; Figure 7 This is a schematic diagram of the structure of the mobile cart.

[0017] In the picture: 001, large boom platform, 002, through slot, 021, bottom positioning slot, 022, limiting plate, 023, input slot, 024, through-rod slot, 025, delivery slot, 026, bin body, 027, barrier plate, 028, movable trolley, 003, front trolley, 031, rear trolley, 032, connecting telescopic rod, 033, inclined telescopic rod, 035, insertion pin, chisel, 004, front wheel, 110, rear wheel, 120, wheel frame, 130, annular belt, 140, through-rod slot, 142, insertion hole, 150, blocking plate, 160, guard plate, 170, contact brush, 210, storage box, 220, dust collection assembly, 230, fixing clamp, 310, first clamp, 311, second clamp. Detailed Implementation

[0018] To facilitate understanding of the present invention, a more complete description of this application will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of the present invention.

[0019] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] Example 1

[0022] like Figures 1 to 4 As shown, the blast furnace front opening machine of this application includes a boom platform 001, a rotating boom 002, a movable trolley 003, a protective assembly, a power assembly, and a control unit.

[0023] The boom platform 001 is positioned on the ground and serves to support and position the rotating boom 002. The rotating arm 002 is a long rod-shaped structure and is positioned on the arm platform 001. The movable trolley 003 is positioned at the bottom of the rotating boom 002 and moves along the length of the rotating boom 002, thereby driving the chisel 004 on the movable trolley 003 to move and complete the blast furnace opening operation. The power unit is used to provide power for the operation of various components of the blast furnace front opening machine of this application; The control unit plays a role in coordinating the operation of various components of the blast furnace front opening machine. The boom platform 001, rotating boom 002, mobile trolley 003, power assembly and control unit are all existing technologies and will not be described in detail here.

[0024] The end of the rotating arm 002 is provided with a through groove 021 near the bottom; the through groove 021 is a through groove, and its length direction is the same as that of the rotating arm 002, for the passage of the annular belt 140 of the protective component. The bottom of the rotating arm 002 is provided with a row of bottom positioning grooves 022, and the distance between the bottom positioning grooves 022 is less than 15 cm, which is used to assist in the positioning of the moving trolley 003.

[0025] The movable trolley 003 includes a front trolley 031, a rear trolley 032, a connecting telescopic rod 033, and an inclined telescopic rod 034. Both the front trolley 031 and the rear trolley 032 have wheels on their top surfaces. The bottom of the rear trolley 032 is fixed to the annular belt 140. The connecting telescopic rod 033 is a rigid telescopic rod positioned between the front trolley 031 and the rear trolley 032, with both ends positioned on the front trolley 031 and the rear trolley 032 respectively. It extends and retracts under the control of the power assembly and the control unit, pushing the front trolley 031 relative to the rear trolley 032 during extension. The inclined telescopic rod 034 is an inclined rigid telescopic rod, with one end positioned on the rear trolley 032 away from the connecting telescopic rod 033. It extends and retracts under the control of the power assembly and the control unit, and when extended, it embeds into the bottom positioning groove 022 at the bottom of the rotating arm 002 to fix the rear trolley 032.

[0026] Furthermore, both the connecting telescopic rod 033 and the inclined telescopic rod 034 are fitted with telescopic sleeves for dust prevention.

[0027] The protective assembly includes a front load wheel 110, a rear load wheel 120, a wheel frame 130, and an annular belt 140. The front carrier wheel 110 is a cylindrical wheel, and there are two of them. They are positioned at the bottom of the rotating boom 002 near the front end via a wheel frame 130. The two front carrier wheels 110 are coaxially and laterally arranged, and the distance between them is greater than the diameter of the chisel 004. The rear carrier wheel 120 is a cylindrical wheel, and there is one of them. It is positioned at the bottom of the rotating boom 002 near the rear end via a wheel frame 130. The annular belt 140 is a metal annular belt with a width less than or equal to the axial length of the front carrier wheel 110. It is fitted onto the front carrier wheel 110 and the rear carrier wheel 120 and is always in a taut state (stretched into an elongated shape by the front carrier wheel 110 and the rear carrier wheel 120). The annular belt 140 passes through the through groove 021 and surrounds the movable trolley 003. The side of the rear trolley 032 away from the rotating arm 002 is fixed on the inner ring of the annular belt 140; The annular belt 140 is provided with a through groove 141 for facilitating the passage of the drill rod 004; the through groove 141 is located in the middle of the annular belt 140, is a rectangular through groove, the width of which is 1.2 to 1.4 times the diameter of the drill rod 004, and the length direction is the same as the length direction of the annular belt 140.

[0028] Both sides of the annular belt 140 are equipped with protective plates 170. The protective plates 170 are vertical rigid plates that are fixed on the wheel frame 130 or the rotating arm 002. They cover the two sides of the space enclosed by the annular belt 140 to prevent splashes from entering the inner ring of the annular belt 140 and splashing onto other components within the enclosed space. A blocking plate 150 is positioned at the bottom of the annular belt 140; the blocking plate 150 is a long strip of rigid plate, which is set close to the annular belt 140 and fixed to the guard plate 170 by a rigid bracket. Its length is similar to that of the through rod groove 141, and it is used to block the through rod groove 141 when it moves to a position close to the blocking plate 150.

[0029] When using the blast furnace front opening machine in this application: Before the opening operation, firstly, control the drill rod 004 to pass through the through-rod groove 141, and then control the annular belt 140 to rotate so that the edge of the through-rod groove 141 is close to the drill rod 004; the annular belt 140 is used to shield the movable trolley 003 and the drill rod 004 from splashes during the opening; then, the annular belt 140, in conjunction with the connecting telescopic rod 033 and the inclined telescopic rod 034, is used to realize the as-needed movement and fixation of the front trolley 031 and the rear trolley 032 (in the drilling preparation stage, first control the connecting telescopic rod 033 to be in a retracted state, and then use the movement of the annular belt 140 to drive the movable trolley 003 to move; when the end of the drill rod 004 is close to the position where the blast furnace needs to be opened, control the inclined telescopic rod 034 to insert into the nearest bottom positioning groove 022 to fix the rear trolley 032, and then control the extension of the connecting telescopic rod 033 to assist the drilling operation of the drill rod 004); after the opening operation is completed, reset all components.

[0030] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages: This invention solves the technical problems of existing furnace front opening machines, such as the need for frequent manual cleaning, easy damage to moving parts, cumbersome cleaning process, and high labor intensity. It achieves the technical effects of furnace front opening machines that do not require frequent cleaning, are less prone to damage to moving parts, are easy to use, and have a long service life.

[0031] Example 2

[0032] To further improve the practicality and applicability of this application and enable it to have a self-cleaning function, this application embodiment adds a cleaning component based on the above embodiment, and optimizes and improves the structure of the movable trolley 003 and the structure of the annular belt 140, specifically as follows: like Figures 5 to 7 As shown, the front trolley 031 and the rear trolley 032 are equipped with wheels on the surfaces near the bottom of the rotating arm 002 and the surfaces away from the bottom of the rotating arm 002. The rear trolley 032 is also provided with an insertion pin 035 on the side away from the bottom surface of the rotating arm 002; the insertion pin 035 is a telescopic rod structure, and there are one or more of them. It operates under the coordinated control of the power component and the control unit. In the retracted state, it does not affect the movement of the rear trolley 032. The rear trolley 032 is not directly fixed to the annular belt 140; The annular belt 140 is provided with an insertion hole 142 that matches the insertion pin 035; the insertion hole 142 is a through hole; The bottom surface of the rotating arm 002 is provided with a limiting plate 023. The limiting plate 023 is a strip-shaped plate, there are two of them, which are arranged in parallel and fixed to the bottom surface of the rotating arm 002 to limit the movement direction of the movable trolley 003. The cleaning assembly is used to clean debris accumulated on the outer ring of the annular belt 140, and includes an abutment brush 210, a storage box 220, and a vacuuming assembly 230. The abutment brush 210 is positioned on the rotating arm 002 or the wheel carrier 130, near the tail end of the rotating arm 002 and abutting against the annular belt 140. The storage box 220 is an open-top box, positioned on the rotating arm 002 or the wheel carrier 130, directly below the abutment brush 210. When the annular belt 140 rotates, the abutment brush 210... Ten pairs of moving annular belts 140 are brushed to remove debris, which falls into storage box 220. The vacuuming assembly 230 is controlled by the control unit and is used to clean the outer ring of the annular belt 140 by vacuuming. It is a prior art technology and includes a long rod-shaped vacuum head. The vacuum head is positioned at the front end of the rotating arm 002 near the top and close to the annular belt 140. In use, the debris adhering to the annular belt 140 will loosen when the annular belt 140 bends and will be sucked away when it approaches the vacuum head.

[0033] When using the blast furnace front opening machine in this application: Before the opening operation is completed (before the self-cleaning begins), the insertion pin 035 is inserted into the insertion hole 142 (equivalent to the rear carriage 032 being fixed on the annular belt 140); after the opening operation is completed, the self-cleaning state is entered, the insertion pin 035 is controlled to retract, and then the annular belt 140 is controlled to rotate one or more times, and the cleaning component completes the cleaning of the annular belt 140; finally, all components are reset.

[0034] Preferably, there are multiple insertion holes 142, arranged along the length of the annular belt 140, with a spacing of more than 30 cm between them. Before the opening operation, the insertion pin 035 can be controlled to retract and the annular belt 140 can be controlled to rotate after the drill rod 004 approaches the blast furnace opening position. Then, the insertion pin 035 can be controlled to extend and penetrate into the insertion hole 142, so that most of the through rod groove 141 enters and then rotates into the boom 002, reducing the area of ​​the through rod groove 141 exposed outside the boom 002, thereby reducing the possibility of splashes entering the space enclosed by the annular belt 140.

[0035] Example 3

[0036] Considering that the chisel rod 004 of the opening machine is easily damaged and needs frequent replacement due to the harsh working environment, in order to further improve the practicality and applicability of this application, it is equipped with the function of automatically replacing the head of the chisel rod 004; specifically: like Figures 5 to 7 As shown, the chisel 004 is rotatably connected to the front trolley 031 and rotates under the coordinated control of the power unit and the control unit; The drill rod 004 is composed of a drill rod head and a carrier rod connected by threads. The drill rod head is relatively short, accounting for less than one-fifth of the total length of the drill rod 004, and is located at the end of the drill rod 004 away from the movable trolley 003. The top of the rotating arm 002 is positioned with a compartment 027; the compartment 027 is used to store the drill bit head; the drill bit head is placed horizontally in the compartment 027; The rotating arm 002 is provided with an input slot 024, a rod passage slot 025, and an delivery slot 026, and a baffle plate 028 is provided at the bottom. The input slot 024 is located at the bottom of the bin body 027 and is connected to both the bin body 027 and the through slot 021. It is a rectangular through slot located directly below the bin body 027. Its length and width are greater than the length and diameter of the drill rod head, respectively. The difference between the length and the length of the drill rod head and the difference between the width and the diameter of the drill rod head is less than 1 cm. Under normal circumstances, the drill rod heads are arranged in a row in slot 024; The rod passage groove 025 is located inside the rotating arm 002. It is a long strip groove that is connected to the through groove 021 and is used for the rod head to pass through. The delivery slot 026 is a long rectangular through slot located at the bottom of the rotating arm 002 and close to the front end of the rotating arm 002. Its top is connected to the rod passage slot 025. The length and width of the bottom are greater than the length and diameter of the rod head, respectively. The difference between the length and the length of the rod head and the difference between the width and the diameter of the rod head is less than 1 cm. The barrier plate 028 is a rigid plate located at the bottom of the rotating arm 002. Under the coordinated control of the control unit and the power component, it slides along the width direction of the rotating arm 002 and normally closes the bottom of the delivery slot 026.

[0037] The outer ring of the annular belt 140 is provided with an abutting rod 160; the abutting rod 160 is a horizontal rigid rod with its length direction being the same as the width direction of the annular belt 140, and is fixed on the outer ring of the annular belt 140 for pushing the drill bit head to move. The bottom of the rotating arm 002 is provided with a fixed clamp 310; the fixed clamp 310 is located in the space enclosed by the annular belt 140, and there are two of them, which are electric or pneumatic clamps, namely the first clamp 311 and the second clamp 312; the distance between the first clamp 311 and the second clamp 312 is greater than 10 cm; after the fixed clamp 310 is clamped, the whole is U-shaped; after the fixed clamp 310 clamps the falling drill rod head, it will make the drill rod head coaxial with the carrier rod.

[0038] The through groove 141 and the insertion hole 142 of the annular belt 140 are both chamfered, so that the through groove 141 and the insertion hole 142 will not push the drill head forward when they abut against the end of the drill head.

[0039] When using the blast furnace front opening machine in this application: If the drill bit head needs to be replaced, first control the fixing clamp 310 to clamp and fix the old drill bit head, then control the drill rod 004 to rotate and move to remove the old drill bit head; control the rotating arm 002 to tilt and control the fixing clamp 310 to loosen and remove the drill bit head; then control the annular belt 140 to rotate, and use the abutment rod 160 to push the drill bit head located at the bottom of the input slot 024 into the input slot 026; control the rotating arm 002 to change to a horizontal state, then control the baffle plate 028 to slide so that the drill bit head falls and is clamped and fixed by the fixing clamp 310; then combine the new drill bit head with the carrier rod; finally, reset all components.

[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A blast furnace front opening machine, comprising a boom platform (001), a rotating boom (002), a movable trolley (003), and a drill rod (004), characterized in that: It also includes protective components; The rotating arm (002) has a through groove (021) with the same length direction as its own length near the bottom of its end, and a row of bottom positioning grooves (022) at the bottom. The movable trolley (003) includes a front trolley (031), a rear trolley (032), a connecting telescopic rod (033), and an inclined telescopic rod (034); the connecting telescopic rod (033) is positioned between the front trolley (031) and the rear trolley (032); the inclined telescopic rod (034) is an inclined rigid telescopic rod, one end of which is positioned at the end of the rear trolley (032), and when extended, it is embedded in the bottom positioning groove (022); The main body of the protective component is a conveyor belt structure, and its annular belt (140) is made of metal, passing through the through groove (021) and surrounding the movable trolley (003); The protective assembly includes a front load wheel (110), a rear load wheel (120), a wheel frame (130), and an annular belt (140); The front-mounted wheel (110) is a cylindrical wheel body, and there are two of them. They are positioned at the bottom of the rotating arm (002) near the front end by a wheel body carrier (130). The rear-mounted wheel (120) is positioned near the rear end of the bottom of the rotating arm (002) via the wheel frame (130); The annular belt (140) is provided with a through groove (141) for the drill rod (004) to pass through; The rear trolley (032) is fixed to the inner ring of the annular belt (140); The drill rod (004) is rotatably connected to the front carriage (031) and is composed of a drill rod head and a carrier rod threaded connection. Before the opening operation, first control the drill rod (004) to pass through the through rod groove (141), and then control the annular belt (140) to rotate so that the edge of the through rod groove (141) is close to the drill rod (004); the annular belt (140) is used to shield the movable trolley (003) and the drill rod (004) from splashes during the opening; then the annular belt (140) is used in conjunction with the connecting telescopic rod (033) and the inclined telescopic rod (034) to realize the movement and fixation of the front trolley (031) and the rear trolley (032) as needed; after the opening operation is completed, reset all components.

2. The blast furnace taphole machine as described in claim 1, characterized in that: Both the connecting telescopic rod (033) and the inclined telescopic rod (034) are fitted with telescopic sleeves for dust prevention.

3. The blast furnace inlet taphole machine as described in claim 1, characterized in that: Both sides of the annular belt (140) are equipped with protective plates (170); The guard plate (170) is a vertically placed rigid plate fixed on the wheel frame (130) or the rotating arm (002), covering both sides of the space enclosed by the annular belt (140) to prevent splashes from entering the inner ring of the annular belt (140) and splashing onto other components within the enclosed space.

4. The blast furnace inlet tapping machine as described in claim 3, characterized in that: The bottom of the annular belt (140) is positioned with a plug plate (150); The blocking plate (150) is a long strip of rigid plate, which is set close to the annular belt (140) and fixed to the guard plate (170) by a rigid bracket. It is used to block the through rod groove (141) when the through rod groove (141) moves to a position close to the blocking plate (150).

5. The blast furnace taphole machine as described in any one of claims 1 to 4, characterized in that: The rear carriage (032) is provided with an insertion pin (035) on the side away from the bottom surface of the rotating arm (002); the insertion pin (035) does not affect the movement of the rear carriage (032) when it is retracted; the rear carriage (032) is not directly fixed to the annular belt (140); The annular belt (140) is provided with an insertion hole (142) that matches the insertion pin (035); It also includes cleanup components; The cleaning component is disposed in close proximity to the annular belt (140) and includes a brush, a storage container, and / or a vacuuming component (230).

6. The blast furnace inlet taphole machine as described in claim 5, characterized in that: The cleaning components include a brush (210), a storage box (220), and / or a vacuuming component (230); The abutting brush (210) is positioned on the rotating arm (002) or the wheel frame (130), and is located near the tail end of the rotating arm (002) and abuts against the annular belt (140); The storage box (220) is a box with an open top, positioned on the rotating arm (002) or the wheel frame (130), directly below the abutment brush (210); When the annular belt (140) rotates, the abutment brush (210) brushes the annular belt (140) that is moving against it, and the debris brushed off falls into the storage box (220). The vacuuming assembly (230) is used to clean the outer ring of the annular belt (140) by vacuuming, and is positioned at the front end of the rotating arm (002) near the top and close to the annular belt (140).

7. The blast furnace taphole machine as described in claim 5, characterized in that: The number of the insertion holes (142) is multiple, arranged along the length direction of the annular belt (140), and the distance between them is greater than 30 cm; Before the opening operation, the insertion pin (035) can be controlled to retract and the annular belt (140) can be controlled to rotate after the drill rod (004) is close to the blast furnace opening position. Then the insertion pin (035) can be controlled to extend and penetrate into the insertion hole (142), so that most of the through rod groove (141) enters and then rotates the boom (002), reducing the area of ​​the through rod groove (141) exposed outside the boom (002) and thus reducing the possibility of splashes entering the space enclosed by the annular belt (140).

8. The blast furnace taphole machine as described in claim 5, characterized in that: The outer ring of the annular belt (140) is provided with an abutting rod (160); The bottom of the rotating arm (002) is provided with a fixing clamp (310); the fixing clamp (310) is located in the space enclosed by the annular belt (140), and there are two of them. After the fixing clamp (310) clamps the falling drill rod head, it will make the drill rod head coaxial with the carrier rod. The top of the rotating arm (002) is positioned with a bin (027); the rotating arm (002) is provided with an input slot (024), a rod passage slot (025), and a delivery slot (026), and a baffle plate (028) is provided at the bottom; the drill bit head in the bin (027) will fall into the input slot (024), and under the push of the abutting rod (160), it will enter the delivery slot (026) and be delivered onto the fixed clamp (310).

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