CN211367616U - Blast furnace gun control connecting rod capable of avoiding loosening and rusting - Google Patents
Blast furnace gun control connecting rod capable of avoiding loosening and rusting Download PDFInfo
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- CN211367616U CN211367616U CN201921890833.4U CN201921890833U CN211367616U CN 211367616 U CN211367616 U CN 211367616U CN 201921890833 U CN201921890833 U CN 201921890833U CN 211367616 U CN211367616 U CN 211367616U
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Abstract
The utility model provides a can avoid returning blast furnace clay gun control connecting rod of pine and corrosion, belongs to blast furnace clay gun equipment technical field for solve the screw thread damage and the corrosion problem of clay gun control connecting rod. The technical scheme 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 rotating directions. Two knuckle bearings are respectively arranged at the front parts of the two connecting rod heads, two springs are respectively arranged in inner holes of the two connecting rod sleeves, and two groups of carbon fiber packing are respectively arranged in the sleeve inner hole at one end of the adjusting screw rod and are compressed and fixed by a pressing flange. The utility model discloses a seal structure and spring structure have solved the problem that the regulation screw thread returned pine and corrosion, have reduced the degree of difficulty of maintenance work, have prolonged mud gun control connecting rod life, have reduced the equipment maintenance cost, have stopped because of mud gun control connecting rod throw off the serious accident of burning loss, blast furnace damping down after the mud gun out of control that causes.
Description
Technical Field
The utility model relates to a blast furnace clay gun control connecting rod belongs to blast furnace clay gun equipment technical field.
Background
The mud gun is the most important stokehold equipment in blast furnace ironmaking production, and has the function of quickly and accurately blocking the iron outlet after iron discharge so that the blast furnace quickly enters the next cycle of operation. The control connecting rod is an important component of the slewing mechanism part of the mud gun, and has the following main functions: 1. the device is used for adjusting the displacement of the gun head of the mud gun mud beating mechanism in the horizontal direction so that the mud gun is aligned with the taphole; 2. and the four-bar mechanism is combined with other parts to limit the motion trail of the mud gun mud beating mechanism.
The control connecting rod structure of the KD31 and KD41 hydraulic clay guns adopted by the existing blast furnace mostly consists of a middle adjusting screw rod, deep-hole nut connecting rods at two ends and locking nuts. In the actual use process of the control connecting rod with the structure, the following problems often occur:
firstly, when a mud gun plugging operation is carried out, the instantaneous control connecting rod for plugging the iron notch of the mud gun plugging mechanism is subjected to impact vibration, the locking nut can return to be loosened after a period of use, the locking force of threaded connection disappears, axial impact is caused between the adjusting screw rod and the threaded contact surface of the deep hole nut connecting rod, the gap is increased, thread damage is caused after a long time, the adjusting screw rod and the deep hole nut connecting rod can be directly separated from each other in serious cases, and a serious accident that the mud gun plugging mechanism is out of control 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 and connected through the tie bars, the method can solve the problem of thread damage after the locking screw holes are loosened, but the problem of difficulty in adjustment can occur when the clay gun is adjusted next time.
Secondly, the iron notch plane needs to be poured again when damaged or pits appear after a period of use, and is influenced by factors such as artificial measurement errors and construction quality, the center position of the iron notch after pouring again usually has deviation, and at the moment, the mud gun control connecting rod needs to be adjusted to align the center of the iron notch. When the control link is adjusted again, the thread is found to rust and cannot be adjusted at all. The cause of thread rust is: a large amount of smoke dust during tapping and cooling water mist of a mud gun are soaked in a thread gap to cause thread rust. Because the deep-hole nut connecting rod structure has long and deep threads, the conventional derusting measures such as spraying derusting liquid, oil immersion and the like have little effect, and the control connecting rod can only be replaced to adjust the mud gun again. Therefore, the service life of the control connecting rod is greatly reduced, and the equipment maintenance cost is increased.
Therefore, the mud gun control connecting rod structure capable of preventing the thread from loosening and corrosion is urgently needed to be researched.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a can avoid returning the blast furnace clay gun control connecting rod of pine and corrosion is provided, this kind of blast furnace clay gun control connecting rod structure can eliminate the adjusting thread and return pine and corrosion phenomenon, and extension clay gun control connecting rod life reduces the maintenance of equipment cost, stops because of the serious accident that the control connecting rod drops the clay gun scaling loss that causes, blast furnace damping down.
The technical scheme for solving the technical problems is as follows:
a blast furnace gun control connecting rod capable of avoiding back loosening 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 in 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 inner holes of the left connecting rod sleeve and the right connecting rod sleeve, the thread turning directions in the inner holes of the left connecting rod sleeve and the right connecting rod sleeve are opposite, the two springs are respectively arranged in the inner holes of the left connecting rod sleeve and the right connecting rod sleeve at the front end of the, two groups of carbon fiber packing are respectively arranged in sleeve inner holes at one ends, connected with the adjusting screw, of the left connecting rod sleeve and the right connecting rod sleeve, two pressing flanges are respectively fixed on sleeve end faces at one ends, connected with the adjusting screw, of the left connecting rod sleeve and the right connecting rod sleeve through bolts, and inner side end faces of the two pressing flanges are respectively pressed on the carbon fiber packing in the sleeve inner holes.
The blast furnace clay gun control connecting rod capable of avoiding loosening and rusting is characterized in that the front parts of the left connecting rod head and the right connecting rod head are respectively in a disc shape with a certain thickness, a central hole is formed in the center of a disc plane, the diameter of the central hole is matched with the outer diameter of a joint bearing, a circular ring-shaped bulge is arranged at one end of the central hole, the two joint bearings are respectively placed in the central holes of the discs of the left connecting rod head and the right connecting rod head, the circular ring-shaped bulge is blocked on one side of the joint bearing, an annular blocking ring groove is formed in the central hole wall of the other side of the joint bearing, the circumferential edges of the two blocking rings are respectively embedded in the blocking ring grooves of the central holes of the two discs, and the two blocking rings.
The blast furnace clay gun control connecting rod capable of avoiding loosening and rusting is characterized in that the rear parts of the left connecting rod head and the right connecting rod head are provided with connecting rod inner holes along the length of the connecting rods, the connecting rod inner holes are opposite to the sleeve inner holes of the left connecting rod sleeve and the right connecting rod sleeve respectively, and two springs placed 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.
The above-mentioned blast furnace clay gun control connecting rod that can avoid returning pine and corrosion, adjusting screw's the body of rod both ends are the screw rod opposite for revolving to respectively, adjusting screw's the both ends body of rod respectively with the screw thread accordant connection of left connecting rod sleeve and the telescopic sleeve hole of right connecting rod, adjusting screw's middle part is the cylinder, two intermediate positions of cylinder have the round hole of perpendicular to cylinder, two round hole mutually perpendicular.
Above-mentioned can avoid returning blast furnace mud gun control connecting rod of pine and corrosion, have annular groove in the sleeve hole of the relative one end of left side connecting rod sleeve and right connecting rod sleeve and adjusting screw, annular groove centers on adjusting screw's the body of rod, and two sets of carbon fiber packing are placed respectively in left connecting rod sleeve and the telescopic sleeve hole annular groove of right connecting rod, carbon fiber packing and adjusting screw's the external wall of rod in close contact with.
The blast furnace clay gun control connecting rod capable of avoiding loosening and rusting is characterized in that the press flange is a circular ring, the inner hole diameter of the press flange circular ring is matched with the outer diameter of the adjusting screw rod, the inner side surfaces of the two press flange circular rings are respectively opposite to the sleeve inner holes of the left connecting rod sleeve and the right connecting rod sleeve, the inner side surfaces of the two press flange circular rings are provided with forward convex circular rings, the outer diameters of the convex circular rings are matched with the diameter of the sleeve inner hole, the end faces of the convex circular rings are tightly pressed on carbon fiber packing for placing the sleeve inner hole, the circumference of the press flange circular ring at the periphery of the convex circular rings is provided with a plurality of fixing holes, the fixing holes are uniformly distributed around the press flange circumference, a plurality of mounting screw holes are respectively formed in the end faces of the left connecting rod sleeve and the right connecting rod sleeve, the mounting screw holes are respectively opposite to the fixing holes of the press flange circumference, and.
The utility model has the advantages that:
the rear ends of the two connecting rod sleeves of the utility model are respectively provided with the flange sealing device, which can ensure the sealing effect under the high-temperature baking environment of the taphole, effectively prevent the smoke dust and the water mist from entering the thread fit gap of the adjusting screw rod, and eliminate the hidden trouble of the corrosion of the adjusting thread; the springs are arranged inside the two connecting rod heads and the two connecting rod sleeve weldments, so that the impact force borne by the connecting rod can be buffered and controlled, meanwhile, the threaded contact surface compression force is provided for the adjusting screw, and the adjusting screw and the connecting rod sleeve can be effectively prevented from returning to be loose.
The utility model discloses a blast furnace clay gun control connecting rod's pioneering, solved the problem that the regulation screw thread that does not solve returns pine and corrosion for a long time through flange seal structure and spring hold-down structure, not only reduced maintenance work's the degree of difficulty greatly, more prolonged clay gun control connecting rod life, reduced the equipment maintenance cost, stopped because of the clay gun control connecting rod throw off the serious accident that causes the clay gun loss of control back, blast furnace damping down, there is fabulous popularization and application value in industry.
Drawings
Fig. 1 is a schematic structural diagram 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 rod 4, a pressing flange 5, a right connecting rod sleeve 6, a spring 7, a right connecting rod head 8, a joint bearing 9 and a retainer ring 10.
Detailed Description
The utility model discloses constitute by left connecting rod head 1, right connecting rod head 8, left connecting rod sleeve 2, right connecting rod sleeve 6, adjusting screw 4, two joint bearing 9 and two retaining rings 10, two pressure flanges 5, two sets of carbon fiber packing 3, two springs 7.
The overall structure of the utility model is that, the lower part of left connecting rod head 1 and right connecting rod head 8 respectively with left connecting rod sleeve 2 and right connecting rod sleeve 6's outer end welded connection, adjusting screw 4 is located between left connecting rod sleeve 2 and right connecting rod sleeve 6's the inner, adjusting screw 4 respectively with left connecting rod sleeve 2 and right connecting rod sleeve 6 be threaded connection. Two joint bearings 9 are respectively arranged in the 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 the sleeve inner holes of the left connecting rod sleeve 2 and the right connecting rod sleeve 6 at the front end of the adjusting screw rod 4, and two groups of carbon fiber packing 3 are respectively arranged in the sleeve inner holes at one ends, connected with the adjusting screw rod 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 figure shows that the front parts of the left connecting rod head 1 and the right connecting rod head 8 are respectively in a shape of a disk with a certain thickness, the center of the plane of the disk is provided with a central hole, the diameter of the central hole is matched with the outer diameter of a joint bearing 9, the joint bearing 9 is placed in the central hole, and the joint bearing 9 is clamped and fixed by a circular bulge in the central hole and a check ring 10.
One end of the disc central hole 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 at one side of the joint bearing 9; the central hole wall at the other side of the knuckle bearing 9 is provided with an annular retainer groove, the circumferential edges of the two retainer rings 10 are respectively embedded in the retainer grooves of the central holes of the two disks, and the annular bulge and the two retainer rings 10 respectively fix the two knuckle bearings 9 in the central holes of the disks at the front parts of the left connecting rod head 1 and the right connecting rod head 8.
It is shown in the figure that there are connecting rod bores along the length of the connecting rod at the rear of the left connecting rod head 1 and the right connecting rod head 8, the connecting rod bores are opposite to the sleeve bores of the left connecting rod sleeve 2 and the right connecting rod sleeve 6, respectively, and the two springs 7 placed in the sleeve bores of the left connecting rod sleeve 2 and the right connecting rod sleeve 6 extend into the connecting rod bores of the left connecting rod head 1 and the right connecting rod head 8, respectively, so that the springs 7 have enough telescopic space to ensure the length and elasticity of the springs 7. The effect of spring 7 is the impact force that the buffering control connecting rod bore, provides screw thread contact surface clamping force for adjusting screw 4 simultaneously, can prevent effectively that adjusting screw 4 and connecting rod sleeve from appearing returning the pine.
The drawing shows that the screw threads in the inner holes of the left connecting rod sleeve 2 and the right connecting rod sleeve 6 are opposite in turning direction, the two ends of the rod body of the adjusting screw rod 4 are respectively screw rods opposite in turning direction, the rod bodies at the two ends of the adjusting screw rod 4 are respectively in matched connection with the screw threads in the sleeve inner holes of the left connecting rod sleeve 2 and the right connecting rod sleeve 6, and the adjusting screw rod 4 is rotated, so that the left connecting rod sleeve 2 and the right connecting rod sleeve 6 can move towards the middle or move towards the two ends simultaneously.
The middle of the adjusting screw rod 4 is shown as a cylinder, and two round holes perpendicular to the cylinder are arranged in the middle of the cylinder and are perpendicular to each other. The round hole is used for inserting the rotating rod into the round hole to rotate the adjusting screw rod 4.
The figure shows that the carbon fiber packing 3 and the pressing flange 5 form a sealing structure.
The sleeve inner holes of the opposite ends of the left connecting rod sleeve 2 and the right connecting rod sleeve 6 and the adjusting screw rod 4 are internally provided with annular grooves, the annular grooves surround the rod body of the adjusting screw rod 4, two groups of carbon fiber packing 3 are respectively placed in the annular grooves of the sleeve inner holes of the left connecting rod sleeve 2 and the right connecting rod sleeve 6, and the carbon fiber packing 4 is in close contact with the outer wall of the rod body of the adjusting screw rod 4.
The pressing flange 5 is a circular ring, the diameter of an inner hole of the pressing flange 5 circular ring is matched with the outer diameter of the adjusting screw rod 4, and the inner side surfaces of the two pressing 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 side faces of the two pressing flanges 5 are provided with forward convex circular rings, the outer diameters of the convex circular rings are matched with the diameter of the inner hole of the sleeve, the convex circular rings stretch into the inner hole of the sleeve, and the end faces of the convex circular rings are tightly pressed on the carbon fiber packing 3 placed in the inner hole of the sleeve. The 5 ring circumferences of the flange of protruding ring periphery have a plurality of fixed orificess, and a plurality of fixed orificess encircle 5 circumference equipartitions of flange, have a plurality of installation screws on the terminal surface of left connecting rod sleeve 2 and right connecting rod sleeve 6 respectively, and the installation screw is relative with the fixed orifices of 5 circumferences of flange respectively, and fixing bolt is with two flange 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 face of the flange 5, and the inner wall of the inner hole of the sleeve and the outer wall of the adjusting screw rod 4 are sealed by the carbon fiber packing 3.
The utility model discloses a use method as follows:
mounting and adjusting operation:
firstly, the assembled control connecting rod is hoisted to the height of the installation position, the inner holes of the joint bearings 9 at the two ends of the control connecting rod are aligned to be above the pin shaft of the mud gun mud beating mechanism and the fixed pin shaft of the swing mechanism, and the control connecting rod is integrally pressed on the fixed pin shaft. Then, a crowbar is inserted into the cross-shaped through hole of the middle adjusting screw rod 4, and the adjusting screw rod 4 is rotated. After the iron notch center is adjusted well to adjustment mud gun mechanism horizontal position, pack into two sets of carbon fiber packing 3 respectively in the one end recess of left connecting rod sleeve 2 and right connecting rod sleeve 6, will originally overlap two flange 5 on adjusting screw 4 and fix on left connecting rod sleeve 2 and right connecting rod sleeve 6 with 4M 10 bolted connection respectively, fastening bolt confirm compress tightly carbon fiber packing 3 can, prevent that the fastening over-force from leading to the sealed effect of packing to become invalid.
Periodic maintenance:
after a period of mud gun operation, generally about 45 days, the taphole is poured again, and the control connecting rod needs to be adjusted to be aligned with the center of the taphole. During operation, firstly, fastening bolts of the two pressing flanges 5 are loosened, lithium base grease is coated to a gap of a threaded part of the screw rod in the process of aligning the movable adjusting screw rod 4 to the center of the iron notch, and after adjustment is finished, the two carbon fiber packing heads 3 are replaced 2 to fasten the two pressing flanges 5.
The utility model discloses an embodiment as follows:
the lengths of the left connecting rod head 1 and the right connecting rod head 8 are 400mm, the diameter of the rod body is 120mm, the diameter of the disc is 220mm, and the diameter of the central hole of the disc is 140 mm;
the length of the left connecting rod sleeve 2 and the right connecting rod sleeve 6 is 400mm, the outer diameter is 120mm, and the diameter of an inner hole is 82 mm;
the length of the adjusting screw rod 4 is 1200mm, and the diameter of the thread is 76 mm;
the outer diameter of the pressing flange 5 is 120mm, and the diameter of an inner hole is 77 mm;
the length of the spring 7 is 300mm, and the diameter is 80 mm;
the knuckle bearing 9 is of the type GEG80ES-2 RS.
Claims (6)
1. The utility model provides a can avoid returning blast furnace mud big gun control link of pine and corrosion which characterized in that: the connecting rod 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 rod (4), two springs (7), two groups of carbon fiber packing (3), two pressing flanges (5) and two joint bearings (9), wherein the two joint 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 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 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 rod (4), the two ends of the adjusting screw rod (4) are respectively connected with threads in inner holes of the left connecting rod sleeve (2) and the right connecting rod sleeve (6), the threads in the inner holes of the left connecting rod sleeve (2) and the, two springs (7) are respectively placed in sleeve inner holes of a left connecting rod sleeve (2) and a right connecting rod sleeve (6) at the front end of an adjusting screw rod (4), two end faces of the adjusting screw rod (4) are respectively tightly propped against the end faces of the two springs (7), two groups of carbon fiber packing (3) are respectively arranged in the sleeve inner holes at one ends, connected with the adjusting screw rod (4), of the left connecting rod sleeve (2) and the right connecting rod sleeve (6), two pressing flanges (5) are respectively fixed on the sleeve end faces at one ends, connected with the adjusting screw rod (4), of the left connecting rod sleeve (2) and the right connecting rod sleeve (6) through bolts, and the inner side end faces of the two pressing flanges (5) are respectively pressed on the carbon fiber packing (3) in the sleeve inner holes.
2. The blast furnace clay gun control link rod capable of avoiding back loosening and rusting as claimed in claim 1, wherein: 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 a disc plane is provided with a center hole, the diameter of the center hole is matched with the outer diameter of a joint bearing (9), one end of the center hole is provided with a circular ring bulge, the two joint bearings (9) are respectively placed in the center holes of the discs of the left connecting rod head (1) and the right connecting rod head (8), the circular ring bulge is blocked at one side of the joint bearing (9), the center hole wall at the other side of the joint bearing (9) is provided with an annular retainer ring groove, the circumferential edges of the two retainer rings (10) are respectively embedded in the retainer ring grooves of the center holes of the two discs, and the two retainer rings (10) respectively position the two joint bearings (9) in the center holes of the discs at the front parts.
3. The blast furnace clay gun control link rod capable of avoiding back loosening and rusting as claimed in claim 1, wherein: the rear portion of left side connecting rod head (1) and right connecting rod head (8) has the connecting rod hole along connecting rod length, and the connecting rod hole is relative with the sleeve hole of left connecting rod sleeve (2) and right connecting rod sleeve (6) respectively, and two springs (7) of placing in the sleeve hole of left connecting rod sleeve (2) and right connecting rod sleeve (6) extend to respectively in the connecting rod hole of left connecting rod head (1) and right connecting rod head (8).
4. The blast furnace clay gun control link rod capable of avoiding back loosening and rusting as claimed in claim 1, wherein: the two ends of the rod body of the adjusting screw rod (4) are respectively threaded rods with opposite rotating directions, the rod bodies at the two ends of the adjusting screw rod (4) are respectively in threaded matching connection with the sleeve inner holes of the left connecting rod sleeve (2) and the right connecting rod sleeve (6), the middle part of the adjusting screw rod (4) is a cylinder, two round holes perpendicular to the cylinder are formed in the middle of the cylinder, and the two round holes are perpendicular to each other.
5. The blast furnace clay gun control link rod capable of avoiding back loosening and rusting as claimed in claim 1, wherein: there is the annular groove in the sleeve hole of the relative one end of left side connecting rod sleeve (2) and right connecting rod sleeve (6) and adjusting screw (4) respectively, and the annular groove centers on 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 side connecting rod sleeve (2) and right connecting rod sleeve (6), and carbon fiber packing (3) and the body of rod outer wall in close contact with of adjusting screw (4).
6. The blast furnace clay gun control link rod capable of avoiding back loosening and rusting as claimed in claim 1, wherein: the pressing flange (5) is a circular ring, the diameter of an inner hole of the circular ring of the pressing flange (5) is matched with the outer diameter of the adjusting screw rod (4), the inner side surfaces of the two pressing 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 side surfaces of the two pressing flange (5) circular rings are provided with convex circular rings which are convex forwards, the outer diameter of each convex circular ring is matched with the diameter of the sleeve inner hole, the end surfaces of the convex circular rings are tightly pressed on a carbon fiber packing (3) arranged in an annular groove of the sleeve inner hole, the circumference of the pressing flange (5) on the periphery of each convex circular ring is provided with a plurality of fixing holes which are uniformly distributed around the circumference of the pressing flange (, the end faces of the left connecting rod sleeve (2) and the right connecting rod sleeve (6) are respectively provided with a plurality of mounting screw holes, the mounting screw holes are respectively opposite to the fixing holes on the circumference of the pressing flange (5), and the two pressing flanges (5) are respectively fixedly connected with the end faces of the left connecting rod sleeve (2) and the right connecting rod sleeve (6) through fixing bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921890833.4U CN211367616U (en) | 2019-11-05 | 2019-11-05 | Blast furnace gun control connecting rod capable of avoiding loosening and rusting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921890833.4U CN211367616U (en) | 2019-11-05 | 2019-11-05 | Blast furnace gun control connecting rod capable of avoiding loosening and rusting |
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| CN211367616U true CN211367616U (en) | 2020-08-28 |
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| CN201921890833.4U Active CN211367616U (en) | 2019-11-05 | 2019-11-05 | Blast furnace gun control connecting rod capable of avoiding loosening and rusting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863073A (en) * | 2019-11-05 | 2020-03-06 | 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 |
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2019
- 2019-11-05 CN CN201921890833.4U patent/CN211367616U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863073A (en) * | 2019-11-05 | 2020-03-06 | 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 |
| CN110863073B (en) * | 2019-11-05 | 2024-02-02 | 河钢股份有限公司承德分公司 | Blast furnace mud gun control connecting rod capable of avoiding back loosening and rust |
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