CN110863073B - Blast furnace mud gun control connecting rod capable of avoiding back loosening and rust - Google Patents
Blast furnace mud gun control connecting rod capable of avoiding back loosening and rust Download PDFInfo
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- CN110863073B CN110863073B CN201911071535.7A CN201911071535A CN110863073B CN 110863073 B CN110863073 B CN 110863073B CN 201911071535 A CN201911071535 A CN 201911071535A CN 110863073 B CN110863073 B CN 110863073B
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- connecting rod
- sleeve
- rod sleeve
- right connecting
- left connecting
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 title claims abstract description 12
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 26
- 239000004917 carbon fiber Substances 0.000 claims abstract description 26
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000012856 packing Methods 0.000 claims abstract description 26
- 238000003825 pressing Methods 0.000 claims abstract description 14
- 230000007797 corrosion Effects 0.000 claims abstract description 13
- 238000005260 corrosion Methods 0.000 claims abstract description 13
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims description 4
- 235000011613 Pinus brutia Nutrition 0.000 claims description 4
- 241000018646 Pinus brutia Species 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 7
- 238000007789 sealing Methods 0.000 abstract description 6
- 238000013016 damping Methods 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 22
- 229910052742 iron Inorganic materials 0.000 description 11
- 238000010009 beating Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C21B7/125—Refractory plugging mass
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
A blast furnace mud gun control connecting rod capable of avoiding looseness and corrosion belongs to the technical field of blast furnace mud gun equipment and is used for solving the problems of thread damage and corrosion of the mud gun control connecting rod. The technical proposal is as follows: the lower parts of the left connecting rod head and the right connecting rod head are respectively welded with the outer ends of the left connecting rod sleeve and the right connecting rod sleeve, and the two ends of the adjusting screw are respectively in threaded connection with the left connecting rod sleeve and the right connecting rod sleeve in opposite rotation directions. The two knuckle bearings are respectively arranged at the front parts of the two connecting rod heads, the two springs are respectively arranged in the inner holes of the two connecting rod sleeves, and the two groups of carbon fiber packing are respectively arranged in the inner holes of the sleeves at one end of the adjusting screw rod and are pressed and fixed by the two pressing flanges. The invention solves the problems of screw thread loosening and rust corrosion regulation through the sealing structure and the spring structure, reduces the difficulty of maintenance work, prolongs the service life of the mud gun control connecting rod, reduces the equipment maintenance cost, and avoids serious accidents of burning loss and blast furnace damping down after the mud gun is out of control caused by the separation of the mud gun control connecting rod.
Description
Technical Field
The invention relates to a control connecting rod of a blast furnace mud gun, and belongs to the technical field of blast furnace mud gun equipment.
Background
The mud gun is extremely important stokehole equipment in blast furnace ironmaking production, and the mud gun has the function of rapidly and accurately blocking a tap hole after iron discharge, so that the blast furnace rapidly enters the operation of the next cycle. The control connecting rod is an important component of the mud gun rotation mechanism part, and the main functions of the control connecting rod are as follows: 1. the device is used for adjusting the displacement of the gun head of the mud gun beating mechanism in the horizontal direction so that the mud gun is aligned to the iron notch; 2. and the four-bar linkage mechanism is formed with other components to limit the movement track of the mud gun mud beating mechanism.
The prior KD31 and KD41 type hydraulic mud gun for blast furnaces mostly comprises a middle adjusting screw rod, two end deep hole nut connecting rods and a locking nut. In the actual use process of the structural control connecting rod, the following problems often occur:
firstly, when the mud gun is plugged, the instant control connecting rod of the mud gun plugging iron notch is subjected to impact vibration, after a period of use time, the locking nut is loosened, the locking force of the threaded connection is disappeared, so that axial impact occurs between the threaded contact surface of the adjusting screw and the deep hole nut connecting rod, the gap is increased, the threads are damaged after a long time, the adjusting screw and the deep hole nut connecting rod are directly separated when serious, and a major accident of out-of-control of the mud gun mud beating mechanism occurs. Therefore, at present, after the control connecting rod is adjusted, the middle adjusting screw rod and the deep hole nut connecting rods at two ends are directly welded by using lacing wires, and the method can solve the problem of thread damage after the locking screw is loosened, but the problem of difficult adjustment occurs when the mud gun is adjusted next time.
Secondly, when the plane of the iron notch is damaged or is in a pit after one period of use, the plane of the iron notch needs to be poured again, and the center position of the iron notch after pouring again is usually deviated due to the influence of factors such as artificial measurement errors, construction quality and the like, and at the moment, a mud gun control connecting rod needs to be adjusted to align the center of the iron notch. When the control link is readjusted, thread rust is found and cannot be adjusted at all. Thread rust occurs because: and a large amount of smoke dust generated during tapping and cooling water mist of the mud gun are immersed in the thread gap to cause thread rust. Because the deep hole nut connecting rod structure has long and deep threads, the conventional rust removing measures such as spraying rust removing liquid, immersing oil and the like have very little effect, and only the control connecting rod can be replaced to adjust the mud gun again. This greatly reduces the useful life of the control link and increases the maintenance costs of the device.
Therefore, the research on a blast furnace mud gun control connecting rod structure capable of preventing screw thread from loosening and rust is urgently needed.
Disclosure of Invention
The invention aims to solve the technical problem of providing the blast furnace mud gun control connecting rod capable of avoiding the phenomenon of loosening and rusting of the adjusting screw thread, so that the blast furnace mud gun control connecting rod structure can eliminate the phenomenon of loosening and rusting of the adjusting screw thread, prolong the service life of the mud gun control connecting rod, reduce the equipment maintenance cost and stop serious accidents of mud gun burning loss and blast furnace damping down caused by the disconnection of the control connecting rod.
The technical scheme for solving the technical problems is as follows:
a control connecting rod of a blast furnace mud gun capable of avoiding looseness and corrosion comprises a left connecting rod head, a left connecting rod sleeve, an adjusting screw rod, a right connecting rod sleeve, a right connecting rod head, two springs, two groups of carbon fiber packing, two flanges and two joint bearings, wherein the two joint bearings are respectively arranged in connecting rod holes at the front parts of the left connecting rod head and the right connecting rod head, the lower parts of the left connecting rod head and the right connecting rod head are respectively welded with the outer ends of the left connecting rod sleeve and the right connecting rod sleeve, the inner ends of the left connecting rod sleeve and the right connecting rod sleeve are respectively opposite to the two ends of the adjusting screw rod, the two ends of the adjusting screw rod are respectively connected with threads in the inner holes of the left connecting rod sleeve and the right connecting rod sleeve, the two springs are respectively arranged in sleeve inner holes of the left connecting rod sleeve and the right connecting rod sleeve at the front end of the adjusting screw rod, the two ends of the adjusting screw rod are respectively propped against the end faces of the two springs, the two groups of carbon fiber packing are respectively arranged in sleeve inner holes at one end of the left connecting rod sleeve and one end of the right connecting rod sleeve, the two carbon fiber packing are respectively fixed on the inner end faces of the two connecting rod sleeve and the inner hole of the two connecting rod sleeve respectively, the two flanges are respectively pressed on the inner end faces of the connecting rod sleeve and the inner hole respectively.
The front parts of the left connecting rod head and the right connecting rod head are respectively in disc shapes with certain thickness, the center of a disc plane is provided with a center hole, the diameter of the center hole is matched with the outer diameter of the joint bearing, one end of the center hole is provided with a circular bulge, two joint bearings are respectively arranged in the center holes of the discs of the left connecting rod head and the right connecting rod head, the circular bulge is blocked on one side of the joint bearing, the center hole wall of the other side of the joint bearing is provided with an annular check ring groove, the circumferential edges of the two check rings are respectively embedded in the check ring grooves of the center holes of the two discs, and the two check rings respectively position the two joint bearings in the center holes of the discs in the front parts of the left connecting rod head and the right connecting rod head.
The blast furnace mud gun control connecting rod capable of avoiding looseness and corrosion is characterized in that connecting rod inner holes along the length of the connecting rod are formed in the rear parts of the left connecting rod head and the right connecting rod head, the connecting rod inner holes are respectively opposite to the sleeve inner holes of the left connecting rod sleeve and the right connecting rod sleeve, and two springs arranged in the sleeve inner holes of the left connecting rod sleeve and the right connecting rod sleeve extend into the connecting rod inner holes of the left connecting rod head and the right connecting rod head respectively.
Above-mentioned can avoid returning pine and corrosion's blast furnace mud gun control connecting rod, adjusting screw's body of rod both ends are the screw rod that revolves the opposite direction respectively, adjusting screw's both ends body of rod respectively with left connecting rod sleeve and right connecting rod telescopic sleeve hole's screw thread matching connection, adjusting screw's middle part is the cylinder, two intermediate position of cylinder have the round hole of perpendicular to cylinder, two round hole mutually perpendicular.
Above-mentioned can avoid returning pine and corrosion's blast furnace mud gun control connecting rod, there is annular groove in the sleeve hole of left connecting rod sleeve and right connecting rod sleeve and the opposite one end of adjusting screw, and annular groove surrounds adjusting screw's body of rod, and two sets of carbon fiber packing are placed respectively in left connecting rod sleeve and right connecting rod telescopic sleeve hole annular groove, and carbon fiber packing and adjusting screw's body of rod outer wall in close contact.
Above-mentioned can avoid returning blast furnace mud gun control connecting rod of pine and corrosion, press the flange to be the ring, press the hole diameter and the adjusting screw's of flange ring external diameter assorted, the medial surface of two flange rings respectively with left connecting rod sleeve and right connecting rod telescopic sleeve hole relatively, two flange ring medial surfaces have the protruding ring of protruding forward, the external diameter and the diameter assorted of sleeve hole of protruding ring, protruding ring terminal surface compresses tightly on the carbon fiber packing of placing the sleeve hole, the flange ring circumference of protruding ring periphery has a plurality of fixed orifices, a plurality of fixed orifices encircle flange circumference equipartition, there are a plurality of installation screw respectively on the terminal surface of left connecting rod sleeve and right connecting rod sleeve, the installation screw is relative with the fixed orifices of flange circumference respectively, fixing bolt is with two flange respectively with left connecting rod sleeve and right connecting rod telescopic terminal surface fixed connection.
The beneficial effects of the invention are as follows:
the flange sealing devices are respectively arranged at the rear ends of the two connecting rod sleeves, so that the sealing effect can be ensured in a high-temperature roasting environment of a taphole, smoke dust and water mist can be effectively prevented from entering into a thread matching gap of an adjusting screw, and the hidden trouble of adjusting the corrosion of the threads is eliminated; the springs are arranged in the two connecting rod heads and the two connecting rod sleeve weldments, so that impact force born by the connecting rod can be buffered and controlled, meanwhile, a screw thread contact surface pressing force is provided for the adjusting screw, and the adjusting screw and the connecting rod sleeve can be effectively prevented from being loosened.
The invention is the first creation of the control connecting rod of the blast furnace mud gun, solves the problem of the loosening and rusting of the adjusting screw thread which is not solved for a long time through the flange pressing sealing structure and the spring pressing structure, greatly reduces the difficulty of maintenance work, prolongs the service life of the control connecting rod of the mud gun, reduces the equipment maintenance cost, and avoids the serious accidents of burning loss and blast furnace damping down after the out-of-control of the mud gun caused by the separation of the control connecting rod of the mud gun, thereby having excellent popularization and application values in industry.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a top view of fig. 1.
The figures are labeled as follows: the device comprises a left connecting rod head 1, a left connecting rod sleeve 2, a carbon fiber packing 3, an adjusting screw 4, a flange 5, a right connecting rod sleeve 6, a spring 7, a right connecting rod head 8, a knuckle bearing 9 and a check ring 10.
Detailed Description
The invention consists of a left connecting rod head 1, a right connecting rod head 8, a left connecting rod sleeve 2, a right connecting rod sleeve 6, an adjusting screw 4, two knuckle bearings 9, two check rings 10, two flanges 5, two groups of carbon fiber packing 3 and two springs 7.
The whole structure of the invention is shown in the figure, wherein the lower parts of the left connecting rod head 1 and the right connecting rod head 8 are respectively welded with the outer ends of the left connecting rod sleeve 2 and the right connecting rod sleeve 6, the adjusting screw 4 is positioned between the inner ends of the left connecting rod sleeve 2 and the right connecting rod sleeve 6, and the adjusting screw 4 is respectively in threaded connection with the left connecting rod sleeve 2 and the right connecting rod sleeve 6. Two knuckle bearings 9 are respectively arranged in connecting rod holes at the front parts of the left connecting rod head 1 and the right connecting rod head 8, two springs 7 are respectively arranged in sleeve holes of the left connecting rod sleeve 2 and the right connecting rod sleeve 6 at the front end of the adjusting screw 4, and two groups of carbon fiber packing 3 are respectively arranged in sleeve holes at one end, connected with the adjusting screw 4, of the left connecting rod sleeve 2 and the right connecting rod sleeve 6 and are pressed and fixed by two pressing flanges 5.
The front parts of the left connecting rod head 1 and the right connecting rod head 8 are respectively in a disc shape with a certain thickness, the center of the disc plane is provided with a central hole, the diameter of the central hole is matched with the outer diameter of the knuckle bearing 9, the knuckle bearing 9 is placed in the central hole, and the knuckle bearing 9 is clamped and fixed by an annular bulge in the central hole and a check ring 10.
One end of the disc center holes of the left connecting rod head 1 and the right connecting rod head 8 is provided with a circular ring-shaped bulge which is blocked on one side of the knuckle bearing 9; the central hole wall at the other side of the joint bearing 9 is provided with an annular check ring groove, the circumferential edges of the two check rings 10 are respectively embedded in the check ring grooves of the two disc central holes, and the annular bulge and the two check rings 10 respectively fix the two joint bearings 9 in the disc central holes at the front parts of the left connecting rod head 1 and the right connecting rod head 8.
The figure shows that the rear parts of the left and right connecting rod heads 1, 8 have connecting rod bores along the length of the connecting rod, which are opposite to the sleeve bores of the left and right connecting rod sleeves 2, 6, respectively, and that two springs 7 placed in the sleeve bores of the left and right connecting rod sleeves 2, 6 extend into the connecting rod bores of the left and right connecting rod heads 1, 8, respectively, so that the springs 7 have sufficient expansion and contraction space to ensure the length and elasticity of the springs 7. The spring 7 is used for buffering the impact force born by the control connecting rod, and providing the screw contact surface pressing force for the adjusting screw 4, so that the adjusting screw 4 and the connecting rod sleeve can be effectively prevented from being loosened.
In the figure, the threads in the inner holes of the left connecting rod sleeve 2 and the right connecting rod sleeve 6 are opposite in rotation direction, two ends of the rod body of the adjusting screw 4 are respectively screw rods with opposite rotation directions, two end rod bodies of the adjusting screw 4 are respectively connected with the threads of the sleeve inner holes of the left connecting rod sleeve 2 and the right connecting rod sleeve 6 in a matching manner, and the adjusting screw 4 is rotated to enable the left connecting rod sleeve 2 and the right connecting rod sleeve 6 to move towards the middle or move towards two ends simultaneously.
The middle part of the adjusting screw 4 is a cylinder, two round holes perpendicular to the cylinder are arranged in the middle of the cylinder, and the two round holes are perpendicular to each other. The round hole is used for inserting the rotating rod into the round hole to rotate the adjusting screw 4.
The figure shows that the carbon fiber packing 3 and the flange 5 form a sealing structure.
There is annular groove in the sleeve hole of left connecting rod sleeve 2 and right connecting rod sleeve 6 and the opposite end of adjusting screw 4, and annular groove surrounds the body of rod of adjusting screw 4, and two sets of carbon fiber packing 3 are placed respectively in the annular groove of the sleeve hole of left connecting rod sleeve 2 and right connecting rod sleeve 6, and carbon fiber packing 4 and the outer wall of the body of rod of adjusting screw 4 in close contact.
The flange 5 is a circular ring, the diameter of the inner hole of the flange 5 circular ring is matched with the outer diameter of the adjusting screw 4, and the inner side surfaces of the two flange 5 circular rings are respectively opposite to the sleeve inner holes of the left connecting rod sleeve 2 and the right connecting rod sleeve 6. The inner sides of the two flange 5 rings are provided with protruding rings protruding forwards, the outer diameter of each protruding ring is matched with the diameter of the inner hole of the sleeve, each protruding ring extends into the inner hole of the sleeve, and the end faces of the protruding rings are tightly pressed on the carbon fiber packing 3 placed in the inner hole of the sleeve. The flange 5 circumference of protruding ring periphery has a plurality of fixed orificess, and a plurality of fixed orificess encircle flange 5 circumference equipartition, have a plurality of installation screw respectively on the terminal surface of left connecting rod sleeve 2 and right connecting rod sleeve 6, and the installation screw is relative with the fixed orificess of flange 5 circumference respectively, and fixing bolt will two flanges 5 respectively with the terminal surface fixed connection of left connecting rod sleeve 2 and right connecting rod sleeve 6. The carbon fiber packing 3 is extruded by the convex circular ring on the inner end surface of the flange 5, and the carbon fiber packing 3 seals the inner wall of the inner hole of the sleeve and the outer wall of the adjusting screw 4.
The application method of the invention is as follows:
mounting and adjusting operation:
firstly, hoisting the assembled control connecting rod to the height of the installation position, aligning inner holes of the joint bearings 9 at two ends of the control connecting rod to the positions above the pin shafts of the mud gun mud beating mechanism and the fixed pin shaft of the slewing mechanism, and integrally press-fitting the control connecting rod to the fixed pin shaft. Then, a crow bar is inserted into the cross through hole of the middle adjusting screw 4, and the adjusting screw 4 is rotated. After the horizontal position of the mud gun mud beating mechanism is adjusted to be aligned with the center of the iron notch, two groups of carbon fiber packing 3 are respectively arranged in grooves at one end of the left connecting rod sleeve 2 and the right connecting rod sleeve 6, two flanges 5 which are originally sleeved on the adjusting screw 4 are respectively connected and fixed on the left connecting rod sleeve 2 and the right connecting rod sleeve 6 by 4M 10 bolts, and the fastening bolts confirm to tightly press the carbon fiber packing 3, so that the packing sealing effect failure caused by fastening force is prevented.
Periodic maintenance:
after a period of mud gun operation, the iron notch is poured again for about 45 days, and the control connecting rod needs to be adjusted to align to the center of the iron notch. During operation, the fastening bolts of the two flanges 5 are loosened first, lithium base grease is smeared at the gap of the threaded part of the screw rod in the process of aligning the center of the iron notch by the movable adjusting screw rod 4, and after the adjustment is finished, the two carbon fiber packing 3 is replaced 2, and the two flange 5 bolts are fastened.
One embodiment of the invention is as follows:
the lengths of the left connecting rod head 1 and the right connecting rod head 8 are 400mm, the rod body diameter is 120mm, the disc diameter is 220mm, and the disc center hole diameter is 140mm;
the lengths of the left connecting rod sleeve 2 and the right connecting rod sleeve 6 are 400mm, the outer diameter is 120mm, and the diameter of the inner hole is 82mm;
the length of the adjusting screw 4 is 1200mm, and the thread diameter is 76mm;
the outer diameter of the flange 5 is 120mm, and the diameter of the inner hole is 77mm;
the length of the spring 7 is 300mm, and the diameter is 80mm;
the model of the knuckle bearing 9 is GEG80ES-2RS.
Claims (4)
1. A can avoid returning the blast furnace mud gun control link of pine and corrosion, its characterized in that: the device comprises a left connecting rod head (1), a left connecting rod sleeve (2), a right connecting rod head (8), a right connecting rod sleeve (6), an adjusting screw (4), two springs (7), two groups of carbon fiber packing (3), two flanges (5) and two knuckle bearings (9), wherein the two knuckle bearings (9) are respectively arranged in connecting rod holes at the front parts of the left connecting rod head (1) and the right connecting rod head (8), the lower part of the left connecting rod head (1) is welded with the outer end of the left connecting rod sleeve (2), the lower part of the right connecting rod head (8) is welded with the outer end of the right connecting rod sleeve (6), the inner ends of the left connecting rod sleeve (2) and the right connecting rod sleeve (6) are respectively opposite to the two ends of the adjusting screw (4), the two ends of the adjusting screw (4) are respectively connected with threads in the inner holes of the left connecting rod sleeve (2) and the right connecting rod sleeve (6), the two springs (7) are respectively arranged in the tight end faces of the two inner holes of the adjusting screw sleeve (4) and the two inner holes of the connecting rod sleeve (6) respectively, two groups of carbon fiber packing (3) are respectively arranged in sleeve inner holes at one end of the left connecting rod sleeve (2) and one end of the right connecting rod sleeve (6) which are connected with the adjusting screw (4), two flanges (5) are respectively fixed on sleeve end faces at one end of the left connecting rod sleeve (2) and one end of the right connecting rod sleeve (6) which are connected with the adjusting screw (4) by bolts, and inner side end faces of the two flanges (5) are respectively pressed on the carbon fiber packing (3) in the sleeve inner holes;
the pressing flanges (5) are circular rings, the diameter of the inner holes of the circular rings of the pressing flanges (5) is matched with the outer diameter of the adjusting screw (4), the inner side faces of the circular rings of the two pressing flanges (5) are respectively opposite to sleeve inner holes of the left connecting rod sleeve (2) and the right connecting rod sleeve (6), the inner side faces of the circular rings of the two pressing flanges (5) are provided with protruding circular rings protruding forwards, the outer diameter of the protruding circular rings is matched with the diameter of the sleeve inner holes, the end faces of the protruding circular rings are tightly pressed on the carbon fiber packing (3) in the annular grooves of the inner holes of the placing sleeve, a plurality of fixing holes are formed in the circumference of the circular rings of the pressing flanges (5) on the circumference of the protruding circular rings, a plurality of fixing holes are uniformly distributed around the circumference of the pressing flanges (5), a plurality of mounting screw holes are respectively formed in the end faces of the left connecting rod sleeve (2) and the right connecting rod sleeve (6), the mounting screw holes are respectively opposite to the fixing holes on the circumference of the pressing flanges (5), and the fixing bolts fixedly connect the two pressing flanges (5) with the end faces of the left connecting rod sleeve (2) and the right connecting rod sleeve (6);
the rear parts of the left connecting rod head (1) and the right connecting rod head (8) are provided with connecting rod inner holes along the length of the connecting rod, the connecting rod inner holes are respectively opposite to the sleeve inner holes of the left connecting rod sleeve (2) and the right connecting rod sleeve (6), and two springs (7) arranged in the sleeve inner holes of the left connecting rod sleeve (2) and the right connecting rod sleeve (6) respectively extend into the connecting rod inner holes of the left connecting rod head (1) and the right connecting rod head (8).
2. The blast furnace mud gun control connecting rod capable of avoiding back loosening and rust corrosion according to claim 1, wherein: the front parts of the left connecting rod head (1) and the right connecting rod head (8) are respectively in disc shapes with certain thickness, the center of a disc plane is provided with a center hole, the diameter of the center hole is matched with the outer diameter of the joint bearing (9), one end of the center hole is provided with a circular bulge, the two joint bearings (9) are respectively arranged in the center holes of the discs of the left connecting rod head (1) and the right connecting rod head (8), the circular bulge is blocked on one side of the joint bearing (9), the center hole wall of the other side of the joint bearing (9) is provided with an annular check ring groove, the circumferential edges of the two check rings (10) are respectively embedded in the check ring grooves of the two disc center holes, and the two check rings (10) are respectively used for positioning the two joint bearings (9) in the disc center holes in the front parts of the left connecting rod head (1) and the right connecting rod head (8).
3. The blast furnace mud gun control connecting rod capable of avoiding back loosening and rust corrosion according to claim 1, wherein: the two ends of the rod body of the adjusting screw (4) are respectively screw rods with opposite rotation directions, the rod bodies at the two ends of the adjusting screw (4) are respectively connected with the screw threads of the sleeve inner holes of the left connecting rod sleeve (2) and the right connecting rod sleeve (6) in a matching manner, the middle part of the adjusting screw (4) is a cylinder, two round holes perpendicular to the cylinder are formed in the middle position of the cylinder, and the two round holes are perpendicular to each other.
4. The blast furnace mud gun control connecting rod capable of avoiding back loosening and rust corrosion according to claim 1, wherein: the novel carbon fiber rod comprises a left connecting rod sleeve (2), a right connecting rod sleeve (6) and an adjusting screw (4), wherein annular grooves are respectively formed in sleeve inner holes at opposite ends of the left connecting rod sleeve and the right connecting rod sleeve (6) and surround a rod body of the adjusting screw (4), two groups of carbon fiber packing (3) are respectively placed in the annular grooves of sleeve inner holes of the left connecting rod sleeve (2) and the right connecting rod sleeve (6), and the carbon fiber packing (3) is tightly contacted with the outer wall of the rod body of the adjusting screw (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911071535.7A CN110863073B (en) | 2019-11-05 | 2019-11-05 | Blast furnace mud gun control connecting rod capable of avoiding back loosening and rust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911071535.7A CN110863073B (en) | 2019-11-05 | 2019-11-05 | Blast furnace mud gun control connecting rod capable of avoiding back loosening and rust |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110863073A CN110863073A (en) | 2020-03-06 |
| CN110863073B true CN110863073B (en) | 2024-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911071535.7A Active CN110863073B (en) | 2019-11-05 | 2019-11-05 | Blast furnace mud gun control connecting rod capable of avoiding back loosening and rust |
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| CN (1) | CN110863073B (en) |
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| CN206089719U (en) * | 2016-10-19 | 2017-04-12 | 唐山钢铁集团有限责任公司 | Blast -furnace mud gun control pull rod of low fault rate |
| CN211367616U (en) * | 2019-11-05 | 2020-08-28 | 河钢股份有限公司承德分公司 | Blast furnace gun control connecting rod capable of avoiding loosening and rusting |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT373835B (en) * | 1975-12-05 | 1984-02-27 | Knorr Bremse Gmbh | SELF-ACTING BRAKE ROD ADJUSTMENT, ESPECIALLY FOR RAIL VEHICLES |
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2019
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| CN110863073A (en) | 2020-03-06 |
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