CN112813210B - Method for detecting iron notch depth by using iron notch drill - Google Patents
Method for detecting iron notch depth by using iron notch drill Download PDFInfo
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- CN112813210B CN112813210B CN202110136414.7A CN202110136414A CN112813210B CN 112813210 B CN112813210 B CN 112813210B CN 202110136414 A CN202110136414 A CN 202110136414A CN 112813210 B CN112813210 B CN 112813210B
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- trolley
- time
- taphole
- depth
- walking
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/12—Opening or sealing the tap holes
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/24—Test rods or other checking devices
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2300/00—Process aspects
- C21B2300/04—Modeling of the process, e.g. for control purposes; CII
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses a method for detecting the depth of a taphole by using a taphole drilling machine; relates to the technical field of blast furnace ironmaking; specifically, the starting point or the end point of the travel of the trolley is determined and recorded according to the advancing speed of the drill punching device; the timing starting point of each walking stroke in the initial and middle processes is the starting point of the deceleration of the trolley, and the end point is the time point when the drill bit is replaced and the drill rod is withdrawn; the timing point of the last section of the walking travel is the starting point of the deceleration of the trolley, and the end point is the starting point of the acceleration of the trolley; the method overcomes the defect that the depth of the conventional taphole is not accurate, removes the idle drilling time of the traveling trolley, records that the time of each section of drilling is completely the time of the drilling of the stemming by the drill rod, accurately sets the starting point and the end point of each stroke according to the speed change of the trolley, and improves the accuracy of the finally calculated depth of the taphole.
Description
Technical Field
The invention relates to the technical field of blast furnace ironmaking, in particular to a method for detecting the depth of an iron notch by using an iron notch drill.
Background
The stokehole equipment is used as an important component of blast furnace tapping, plays a role in lifting the weight of the safe and stable operation of the blast furnace, and the blast furnace taphole drilling machine and the hydraulic clay gun are powered by a set of corresponding hydraulic stations. A tap hole machine is a common device in iron works, and has the function of opening a blast furnace tap hole to realize modern blast furnace smelting. The components are as follows: the tapping machine mainly comprises a rotary part, a drilling part and the like. The drilling part mainly comprises a propelling part and a drilling part, the revolving part conveys the drilling part from a parking position to a working position, and the drilling part quickly returns the drilling part to the parking position after an iron notch is opened. The reliability and the service performance of the taphole drilling machine directly relate to the production efficiency of blast furnace ironmaking. At present, the tapping machine lacks the function of detecting the tap hole, and the data can be judged only by experience and human observation, and certain deviation exists.
Disclosure of Invention
The invention overcomes the defects of the prior art, and provides a method for detecting the depth of a taphole by using a taphole drilling machine, so as to solve the problem that the taphole drilling machine has errors in detecting the depth of the taphole.
In order to achieve the above object, the present invention is achieved by the following technical solutions.
A method for detecting the depth of a taphole by using a taphole drilling machine is characterized in that a starting point or an end point of a trolley stroke is determined and recorded according to the advancing speed of a drill punching device; the method specifically comprises the following steps:
1) when the iron notch is opened, the walking trolley drives the drill rod to drill forwards, and when the drill rod contacts the stemming and the walking trolley decelerates for the first time, the walking trolley is used as a starting point to start recording the initial time t of the walking trolley 1 (ii) a Stroke L 1 The end time of (a) is the time t when the drill bit needing to replace the drill rod starts to withdraw from the drill rod 2 (ii) a From t 1 To t 2 During this time, the average speed of the traveling carriage is v 1 Then the walking distance L of the walking trolley at the section 1 = v 1 ·（t 2 －t 1 ）。
2) The drill rod with the replaced drill bit is punched again, and when the drill rod is decelerated for the first time in the advancing process, the initial time t of the walking trolley is recorded as a starting point 3 (ii) a Stroke L 2 End of the time required to replace the drill rod againTime t for drill bit to start to withdraw drill rod 4 (ii) a From t 3 To t 4 During this time, the average speed of the traveling carriage is v 2 Then the walking distance L of the walking trolley at the section 2 = v 2 ·（t 4 －t 3 ）。
3) Repeating the step 2) according to the times of replacing the drill bit, and recording the travel L of the walking trolley after replacing the drill bit each time 3 ，……，L n-1 。
4) The drill rod with the replaced drill bit is subjected to impact drilling again, and when the first speed reduction occurs in the process of advancing, the initial time t of the walking trolley is recorded as a starting point n+1 (ii) a Travel distance L n The end time of (a) is the time t when the travelling trolley is accelerated n+2 (ii) a From t n+1 To t n+2 During this time, the average speed of the traveling carriage is v n Then the walking distance L of the walking trolley at the section n = v n ·（t n+2 －t n+1 ）。
5) Calculating the depth of the iron notch, wherein the depth of the iron notch H = L 1 +L 2 +……+ L n-1 +L n 。
Preferably, the adopted detection device comprises a driving device, a walking trolley and a rock drill arranged on the walking trolley, wherein the rock drill is connected with a drilling device, the driving device is connected with the walking trolley and is used for driving the walking trolley to move along a track, the detection device also comprises a detection system, and the detection system comprises a conical joint, a flexible coupling, an encoder, a program controller and a central control device; the detection system is connected with one end of a transmission shaft of the driving device through one end of a conical joint, and the other end of the conical joint is connected with the encoder through a flexible coupler; the encoder is connected with a program controller through a transmission cable, and the program controller is connected with a central control device.
Preferably, the detection device further comprises a cable protection system, the cable protection system comprises a metal hose, the metal hose is sleeved outside the transmission cable, a protective gas outlet and a protective gas inlet are formed in the metal hose, and two ends of the metal hose are connected with the transmission cable in a sealing mode.
Preferably, one end of the metal hose close to the encoder is sealed through a silica gel pad, and one end of the metal hose close to the program controller is sealed through a metal clamping band.
Preferably, the driving device comprises the transmission shaft, a transmission chain, an end cover and a base, and the other end of the transmission shaft drives the walking trolley to run through the transmission chain.
Preferably, the driving device is arranged on the upper portion of the walking track beam, and the walking trolley is arranged on the lower portion of the walking track beam.
Compared with the prior art, the invention has the beneficial effects that.
The method overcomes the defect that the depth of the conventional iron notch is not accurately detected, removes the idle drilling time of the traveling trolley, records that the time of each section of drilling is completely the time of the drilling of the stemming by the drill rod, accurately sets the starting point and the end point of each stroke according to the speed change of the trolley, and improves the calculation accuracy; the set encoder can transmit the change of the running speed of the walking trolley to the central control system, and each time point of the travel can be accurately recorded through the change of the running speed of the walking trolley, so that the accuracy of the finally calculated depth of the taphole is improved.
Drawings
Fig. 1 is a schematic view of a main structure of the taphole drilling machine according to embodiment 1.
Fig. 2 is a schematic structural view of a driving device of the taphole drilling machine according to embodiment 1.
Fig. 3 is a schematic structural diagram of a detection system of the taphole drilling machine according to embodiment 1.
Fig. 4 is a schematic structural diagram of a cable protection system of the taphole drilling machine according to embodiment 1.
Fig. 5 is a graph of the actual travel distance of each section of the traveling trolley corresponding to the depth of the taphole and the time in the embodiment 2.
Wherein, 1 is drive arrangement, 2 is walking track roof beam, 3 is the fluke, 4 is the walking dolly, 5 is hydraulic rock drill, 6 is the drilling rod cover, 7 is the drilling rod, 8 is the drill bit.
11 is the taper joint, 12 is the ring flange, 13 is the bearing, 14 is flexible shaft coupling, 15 is the encoder support, 16 is the encoder, 17 is the safety cover, 19 is program controller, 20 is the cable, 21 is central control unit.
31 is a transmission shaft, 32 is a transmission chain, 33 is an end cover, and 34 is a base;
41 is a nitrogen inlet, 42 is a metal hose, 43 is a nitrogen outlet, 44 is a silica gel pad, 45 is a metal clamping band, and 46 is a transmission cable.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.
Example 1
As shown in fig. 1-4, the tap hole opening machine capable of detecting the depth of a tap hole comprises a driving device 1, a traveling trolley 4 and a hydraulic rock drill 5 arranged on the traveling trolley 4, wherein the hydraulic rock drill 5 is connected with a drilling device which comprises a drill rod sleeve 6, a drill rod 7 and a drill bit 8 which are sequentially arranged on the hydraulic rock drill 5 from left to right; the driving device 1 is arranged on the upper portion of the walking track beam 2, and the walking trolley 4 is arranged on the lower portion of the walking track beam 2. The driving device 1 comprises a transmission shaft 31, a transmission chain 32, an end cover 33 and a base 34, wherein one end of the transmission shaft 31 drives the walking trolley 4 to run through the transmission chain 32.
The tapping machine is also provided with a detection system, the detection system is arranged on an end cover 33 of the driving device 1 through a flange 12, and a bearing 13 is arranged in the flange 12; the detection system comprises a conical joint 11, a flexible coupling 14, an encoder 16, a program controller 19 and a central control device 21; wherein the conical joint 11 is arranged centrally in a bearing 13. One end of the conical joint 11 is connected with the other end of the transmission shaft 31 of the driving device 1, and the other end of the conical joint 11 is connected with the encoder 16 through the flexible coupling 14; encoder 16 is fixed on encoder support 15, encoder support 15 is installed on ring flange 12, protective cover 17 is sleeved outside encoder 16 and fixed on ring flange 12, encoder 16 is connected with program controller 19 through transmission cable 46, program controller 19 is connected with central control device 21 through cable 20.
The cable protection system is wrapped outside the transmission cable 46 and comprises a metal hose 42, the metal hose 42 is sleeved outside the transmission cable 46, a nitrogen outlet 43 and a nitrogen inlet 41 are arranged on the metal hose 42, and two ends of the metal hose 42 are hermetically connected with the transmission cable 46. The end of the metal hose 42 near the encoder 16 is sealed by a silicone gasket 44, and the end of the metal hose 42 near the program controller 19 is sealed by a metal tape 45.
As shown in fig. 1, when an iron notch needs to be opened, the driving device 1 drives the traveling trolley 4 to move forward and drives the encoder 16 to rotate, at this time, the speed is fast, and at this time, stemming does not start to be impacted, so the stroke is not counted, when the drilling rod 7 mounted on the traveling trolley 4 drives the drill bit 8 to linearly impact the stemming a, the speed of the traveling trolley 4 is fast reduced, the traveling distance of the traveling trolley 4 is recorded at this time, which is an effective stroke, and when the drill bit 8 drills through the stemming B, the speed is fast again, which is used as the termination time at this time; the final position of the traveling trolley 4 is recorded at this time, the data transmitted by the encoder 16 is processed by the program controller 19, the total distance from the beginning to the final speed increase minus the distance from the beginning to the speed decrease is the depth of the taphole, and the signal is displayed on the central control device 21 through the cable 20, so that the depth of the taphole is displayed on the main control picture in real time.
Example 2
As shown in fig. 5, when tapping is needed, the traveling trolley 4 drives the drill rod 7 to move forward, and at the same time, the drill bit 8 of the drill rod 7 moves from a point a to a point B, the speed is particularly high because the distance is an idle stroke, the speed is 70mm/s, the speed is 9-10mm/s when the drill bit contacts with stemming B and starts to drill and flush stemming, the drill rod can only be withdrawn because the drill bit is damaged after the point C is drilled, the first distance is recorded at the moment, the drill bit starts to be flushed again after the drill bit is replaced, the speed is higher than 70mm/s because the speed from the beginning to the point D is an idle stroke, the distance is not recorded, the speed is 9-10mm/s when the point D is drilled to the point E, the drill bit can only be replaced because the drill bit is damaged after the point E is drilled, the drill rod is withdrawn, the second distance is recorded at the moment, and when the drill bit is changed, drilling and punching are started, the speed from the beginning to the F is an idle stroke, so the speed is quickly more than 70mm/s, the distance is not recorded, when the drill bit is drilled from the F point to the G point, the speed is 9-10mm/s, when the drill bit is drilled from the G point, the drill bit is damaged and needs to be replaced, the drill rod can only be withdrawn, the distance is recorded at the moment, the distance is FG at the third section, when the drill bit is replaced, drilling and punching are started, the speed from the beginning to the H is an idle stroke, so the speed is quickly more than 70mm/s, the distance is not recorded, when the drill bit is drilled from the H point to the I point, the speed is 9-10mm/s, but the speed from the I point to the J point is more than 70mm/s, so that the iron notch is drilled through, the fourth section of distance is recorded, and the final iron notch depth L = DE + FG + HI + BC.
And (3) accurately recording the effective distance by using the change of the speed of the walking trolley as each starting point for recording the distance, and finally measuring and calculating the depth of the taphole according to the recorded distance at each stage. The cone side of the cone-shaped joint of the detection system is connected with the transmission shaft of the driving device, the other end of the cone-shaped joint is connected with the encoder through the flexible coupler, the transmission cable of the encoder is transmitted into the program controller through the cable protection system, in order to prevent the cable from being burnt at high temperature, nitrogen is introduced into the cable protection system for cooling, and the high-temperature online cooling technology of the cable is realized.
While the invention has been described in further detail with reference to specific preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. A method for detecting the depth of a taphole by using a taphole drilling machine is characterized in that the starting point or the end point of the travel of a trolley is determined and recorded according to the advancing speed of a drilling device; the method specifically comprises the following steps:
1) when opening the iron notch, the walking trolley (4) drives the drill rod(s)7) Drilling forwards, when the drill rod (7) contacts the stemming and the traveling trolley (4) decelerates for the first time, taking the traveling trolley (4) as a starting point, and starting to record the initial time t of the traveling trolley (4) 1 (ii) a Stroke L 1 The end time of (1) is the time t when the drill bit needing to replace the drill rod (7) starts to withdraw from the drill rod (7) 2 (ii) a From t 1 To t 2 During this time, the average speed of the travelling carriage (4) is v 1 Then the walking distance L of the walking trolley (4) at the section 1 = v 1 ·（t 2 －t 1 ）；
2) The drill rod (7) with the replaced drill bit is punched again, and when the first deceleration occurs in the process of advancing, the initial time t of the walking trolley (4) is recorded as a starting point 3 (ii) a Stroke L 2 Is the time t at which the drill bit of the drill rod (7) again needs to be replaced to start to withdraw the drill rod (7) 4 (ii) a From t 3 To t 4 During this time, the average speed v of the travelling trolley (4) 2 Then the walking distance L of the walking trolley (4) at the section is determined 2 = v 2 ·（t 4 －t 3 ）；
3) Repeating the step 2) according to the times of replacing the drill bit, and recording the stroke L of the walking trolley (4) after replacing the drill bit each time 3 ，……，L n-1 ；
4) The drill rod (7) with the replaced drill bit is punched again, and when the first deceleration occurs in the process of advancing, the initial time t of the walking trolley (4) is recorded as a starting point n+1 (ii) a Stroke L n The end time of (4) is the time t when the travelling trolley (4) is accelerated n+2 (ii) a From t n+1 To t n+2 During this time, the average speed of the travelling carriage (4) is v n Then the walking distance L of the walking trolley (4) at the section is determined n = v n ·（t n+2 －t n+1 ）；
5) Calculating the depth of the iron notch, wherein the depth of the iron notch H = L 1 +L 2 +……+ L n-1 +L n ；
The adopted detection device comprises a driving device (1), a walking trolley (4) and a rock drill arranged on the walking trolley (4), wherein the rock drill is connected with a drilling device, the driving device (1) is connected with the walking trolley (4) and is used for driving the walking trolley (4) to move along a track, the detection device also comprises a detection system, and the detection system comprises a conical joint (11), a flexible coupling (14), an encoder (16), a program controller (19) and a central control device (21); the detection system is connected with one end of a transmission shaft (31) of the driving device (1) through one end of a conical joint (11), and the other end of the conical joint (11) is connected with the encoder (16) through a flexible coupling (14); the encoder (16) is connected with a program controller (19) through a transmission cable (46), and the program controller (19) is connected with a central control device (21).
2. The method for detecting the depth of the taphole by using the taphole drilling machine according to claim 1, further comprising a cable protection system, wherein the cable protection system comprises a flexible metal tube (42), the flexible metal tube (42) is sleeved outside the transmission cable (46), the flexible metal tube (42) is provided with a shielding gas outlet and a shielding gas inlet, and two ends of the flexible metal tube (42) are connected with the transmission cable (46) in a sealing manner.
3. The method for detecting the depth of the taphole by using the taphole drilling machine according to claim 2, wherein the end of the metal hose (42) close to the encoder (16) is sealed by a silicone gasket (44), and the end of the metal hose (42) close to the programmer (19) is sealed by a metal clamping strip (45).
4. The method for detecting the depth of the taphole by using the taphole drilling machine according to claim 1, wherein the driving device (1) comprises the transmission shaft (31), a transmission chain (32), an end cover (33) and a base (34), and the other end of the transmission shaft (31) drives the traveling trolley (4) to run through the transmission chain (32).
5. The method for detecting the depth of a taphole by means of a taphole drilling machine according to claim 4, characterized in that the drive means (1) is arranged on top of the travelling track beam (2) and the travelling trolley (4) is arranged on the bottom of the travelling track beam (2).
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| CN202110136414.7A CN112813210B (en) | 2021-02-01 | 2021-02-01 | Method for detecting iron notch depth by using iron notch drill |
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| CN202110136414.7A CN112813210B (en) | 2021-02-01 | 2021-02-01 | Method for detecting iron notch depth by using iron notch drill |
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| CN112813210B true CN112813210B (en) | 2022-08-23 |
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| CN113862410A (en) * | 2021-09-29 | 2021-12-31 | 新兴铸管股份有限公司 | Blast furnace taphole depth measuring device and method |
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2021
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