CN113195124A

CN113195124A - Hot rolling reel

Info

Publication number: CN113195124A
Application number: CN202080005114.9A
Authority: CN
Inventors: 罗志仁; 王先云; 彭铁辉; 李克诚; 杨丰产
Original assignee: Taier Heavy Industry Co Ltd
Current assignee: Taier Heavy Industry Co Ltd
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-07-30
Also published as: WO2022126320A1

Abstract

The invention provides a hot-rolling winding drum which comprises a unit fixing support, a rotary joint, a hydraulic cylinder, a coupler, a mandrel and a hollow main shaft, wherein the rotary joint, the hydraulic cylinder, the coupler and the mandrel are arranged on the unit fixing support, the hollow main shaft is sleeved on the mandrel, a plurality of sliding surfaces are uniformly distributed on the surface of the mandrel, a plunger is arranged on the sliding surfaces, one end, far away from the coupler, of the hollow main shaft is connected with an extension shaft, the hot-rolling winding drum further comprises a lubricating system and a cooling system, the lubricating system lubricates the contact position of the plunger and the sliding surfaces through an oil way, the cooling system lubricates the hollow main shaft and a sector plate through a water way, and the lubricating system and the cooling system respectively supply lubricating oil and cooling liquid through the rotary joint arranged at the same position. The hot-rolling winding drum has good lubricating and cooling effects, and the winding drum is accurately calibrated.

Description

Hot rolling reel

Technical Field

The invention relates to the technical field of hot-rolled plate strip coiling equipment, in particular to a hot-rolled winding drum.

Background

The coiler is an important key device of a steel rolling workshop for coiling steel into a reel shape. The cold-rolled winding drum is arranged behind the finished product stand on the cold strip steel continuous rolling mill; the single-stand reversible cold-strip rolling mill is arranged in front of and behind the rolling mill. In addition, it is also installed in various finishing units such as continuous pickling line, slitting, annealing, coating, etc. The hot-rolling winding drum is used for winding the hot-rolled steel strip. Hot rolled steel strip, which is characterized by high temperatures, requires cooling of the drum.

The winding drum of the existing hot rolling coiler generally has the following four problems:

1. a through hole is formed in the rotary joint, and the displacement sensor is connected with the piston rod of the collapsible oil cylinder through the inner hole of the rotary joint and used for measuring the real-time displacement condition of the piston rod of the oil cylinder so as to calibrate the expansion and contraction value of the winding drum. The measuring method often causes the abrasion of the displacement sensor of the magnetic scale due to the overlarge jumping of the rotary joint, so that the displacement sensor can not work normally.

2. Traditional hot rolling coiling machine cooling is that outer coolant liquid direct action is outside steel sheet and the reel, can't cool off to reel inside, and the inside temperature of reel is high, and thermal fatigue is serious, and the reel life-span is low.

3. The traditional hot rolling winding drum is provided with two plungers on one inclined plane, due to the space limitation, a progressive distributor is adopted by a lubricating system in the winding drum, all lubricating oil paths are connected in series, and the lubricating effect is not ideal.

4. The spring in the winding drum is made of 50CrVA or Japanese SWOSC materials at present, the high temperature resistance is less than 210 ℃, the temperature of a winding drum coiling plate is generally more than 600 ℃, abnormal sound in the winding drum is often caused by the failure or breakage of the spring in the winding drum, the precision is reduced, and the winding drum is further off-line, so that the service life of the winding drum is seriously influenced.

Some of the above technical problems have been noticed and solved by the prior art, some have not been solved at present, and some have not been solved completely because of the existence of a certain correlation between the technical problems.

The prior art CN108144987A discloses a hot rolling drum of a plunger type coiling machine, which comprises a collapsible oil cylinder, a connector, a hollow main shaft, an extension shaft, a wedge-shaped pull rod, a sector plate, a front wear-resistant plate, a plunger steel sleeve, a tail wear-resistant plate, an end surface wear-resistant plate and an open-loop water channel cooling system; the lubricating system comprises a main lubricating oil path and a plurality of sub-lubricating oil paths; it still includes the anti loosening structure of connecting rod round pin axle. The invention has the advantages that: cooling water in the open-loop cooling system can be recycled, the quality of a steel coil is ensured, and lubricating oil loss on parts such as a sector plate and the like is avoided; the flow speed and the flow of the cooling water in the winding drum are greatly guaranteed, and the cooling effect of the hollow main shaft is guaranteed; the lubricating oil in the hollow main shaft and the wedge-shaped pull rod can be obviously protected, namely, the dry oil can not be carbonized into blocks to block an oil path in the winding drum under the high-temperature condition, so that the surfaces sliding relatively can be effectively lubricated; point-to-point lubrication can ensure the oil quantity of each lubrication point, and the utilization rate of dry oil is improved to about 80%; the lubrication of the wedge-shaped pull rod inclined plane is that the dry oil is directly lubricated on the wedge-shaped pull rod inclined plane between the hollow main shaft and the wedge-shaped pull rod through a lubrication oil way formed by adopting piston sealing, so that the conventional flexible pipe structure is omitted; the plunger steel sleeve is lubricated, so that the clearance between the plunger copper sleeve and the plunger hole is small, and the precision is greatly improved; the invention ensures the lubrication of three wear-resisting plates, a wedge-shaped pull rod bushing, each bearing and the hollow main shaft, so that the surfaces sliding relatively are effectively lubricated; thirdly, the invention well prevents the connecting rod pin shaft from loosening and improves the coiling precision. The invention has the following problems: 1, a large number of channels are arranged in the hollow main shaft, and the hollow main shaft and other parts of a winding drum are cooled through the channels, but the problem of directly cooling a sector plate cannot be solved, and the sector plate is a part directly contacting hot rolled steel, so that the sector plate is deformed and the like; 2, a large number of channels are arranged in the hollow main shaft, which causes difficulty in processing the hollow main shaft, connecting parts exist among the channels, the sealing requirement of the connecting parts is high, and if the sealing is not good, cooling water is leaked out, so that steel is polluted, and a new problem is brought; 3, the main oil way enters the mandrel after passing through the hollow main shaft, and the oil inlet position has sliding friction, so that the sealing requirement is high and the difficulty is high; the precision requirement of the winding drum per se is much lower than that of the part of sealing, but the whole processing cost is increased in order to meet the part of precision requirement; 4, the shape of the rotary joint is limited, and the simultaneous water and oil supply can cause the installation position of a measuring control sensor of the winding drum to be limited.

Prior art CN107081349B discloses a hot-rolled coiler drum cooling system, comprising: a water feeder sleeved on the rotating shaft; a water flowing hole on the inner wall of a winding drum collapsible oil cylinder communicated with a water feeder; a plurality of first axial water inlet holes are uniformly formed in the hollow main shaft along the circumferential direction; a plurality of second axial water inlet holes are uniformly formed in the hollow main shaft and the extension shaft along the circumferential direction; a plurality of axial water return holes are uniformly arranged in the hollow main shaft and the extension shaft along the circumferential direction, and drain holes are communicated with the tail ends of the second axial water inlet holes and the axial water return holes; and the cooling water hole is arranged in the fan-shaped plate. Because the cooling water hole that can flow back has been set up in hot rolling reel sector plate with high temperature contact inside, cooling water not only can be in the inside incessant flow of hollow main shaft, can also be in the inside incessant flow of sector plate, continuously cools off the sector plate, has improved the cooling effect of sector plate and even whole reel greatly. The problem with this invention is that the cooling effect is improved and improved, but the lubrication effect is still poor due to the overall arrangement.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a hot-rolled winding drum, which solves the problems in the prior art.

The utility model provides a hot rolling reel, includes the unit fixed bolster, install in rotary joint, pneumatic cylinder, shaft coupling, dabber, plunger, sector plate, hollow main shaft on the unit fixed bolster, hollow main shaft cover is established at the spindle, a plurality of glide planes of dabber surface evenly distributed, the plunger with glide plane sliding contact cooperation still includes lubricating system and cooling system, and wherein lubricating system lubricates plunger and glide plane contact position through the oil circuit, and wherein cooling system cools off hollow main shaft and sector plate through the water route, and lubricating system and cooling system supply lubricating oil and coolant liquid respectively through the rotary joint who sets up at same position.

Furthermore, grooves are arranged on the side faces of the plunger parallel to the axis of the plunger, the grooves on the side faces are connected with each other to form a loop, and a sealing ring is arranged in each groove.

Furthermore, a groove is formed in the mandrel, a sealing ring is arranged in the groove, and the sealing ring can slide and seal between the mandrel and the hollow main shaft.

Furthermore, one end, far away from the coupler, of the hollow main shaft is connected with an extension shaft.

Further, the position where the hollow main shaft and the extension shaft are connected forms a seal by a seal ring disposed in the groove.

Further, wherein the lubricating system includes more than two parallel oil inlet paths and more than two parallel oil distribution paths arranged in the mandrel.

Furthermore, the oil inlet oil path and the oil distribution oil path are respectively connected with a distributor, wherein the distributor comprises more than two oil inlets, more than two oil distribution ports and a main cavity; the oil inlet and the oil distributing port are respectively connected with the main cavity; wherein the single oil inlet is connected with the single oil inlet path; the single oil distributing port is connected with the single oil distributing oil way.

Further, the oil inlet path on the mandrel is connected with the rotary joint through a flexible pipe.

Furthermore, the oil outlet hole supplies oil to the sliding surface, and the oil outlet hole is connected with the oil distribution oil way through the oil supply oil way.

Furthermore, more than one oil supply oil path is connected to one oil distribution oil path.

Further, a lubricating space for supplying oil to the sliding surface of the mandrel is formed in the hot rolling reel, the lubricating space is supplied with oil through the oil outlet hole, and the lubricating space is exhausted and discharged with oil through an exhaust oil outlet arranged on the hot rolling reel.

Furthermore, the lubricating oil discharged by the exhaust oil outlet is directly led out to the guide surface of the sector plate.

Furthermore, a one-way exhaust valve is arranged in the exhaust oil outlet.

Furthermore, a water ring is fixed at one end of the hollow main shaft close to the coupler, a water inlet hole is formed in the water ring, a through axial main water hole, a through backflow water hole and a radial shunting water hole are formed in the hollow main shaft, and a drain hole is formed in the extension shaft; the two ends of the fan-shaped plate are respectively provided with more than one radial water hole, the fan-shaped plate is also provided with more than one axial water hole, and the corresponding radial water holes at the two ends are connected through one axial water hole to form a cooling liquid passage; one of the radial water holes at the two ends is a water inlet hole of the fan-shaped plate, and the other one is a water outlet hole of the fan-shaped plate.

Furthermore, the water inlet hole of the sector plate and the water outlet hole of the sector plate are connected with the hollow spindle through flexible pipes.

Further, the water inlet hole on the water ring is connected with the rotary joint through a flexible pipe.

Furthermore, a blind hole is formed in the end face, perpendicular to the sector plate, of the plunger, and a spring cover are arranged in the blind hole; wherein the spring cover is in contact with the sector plate and is supported by the spring in the blind hole.

Furthermore, the upper part of the blind hole is a unthreaded hole, and the lower part of the blind hole is a threaded hole.

Further, one end of the plunger, which is contacted with the sector plate, is formed into a T-shaped hook; the T-shaped hook head of the plunger piston is matched with the T-shaped groove of the sector plate.

Furthermore, the ultrasonic displacement detector also comprises a detector, wherein the detector is fixedly connected with the coupler through a fixed seat, and the ultrasonic displacement detector or the laser displacement sensor is installed on the unit fixed support and is matched with the detector for use.

According to the technical scheme, the lubricating oil and the cooling liquid are both sent out through the rotary joint and can be well sealed, so that the possibility of liquid leakage caused by abrasion during working is avoided.

The winding drum of the invention forms a lubricating space in the winding drum through two slidable seals and one static seal, and lubricating oil in the lubricating space can flow. The lubricating oil is supplied to the lubricating space through the oil supply hole, and the lubricating oil is guided to the guide surface of the sector plate through the exhaust oil outlet. The structure forms a closed lubricating oil space in the winding drum, the lubricating oil is lubricated by the guide surface of the sector plate after being discharged, and the whole system has no leakage of the lubricating oil; thereby well and independently separating lubrication and water cooling. Meanwhile, the lubricating oil is directly guided to the sector plates after being discharged, so that the problem of lubrication is not separately considered for the guide surfaces of the sector plates.

Through using flexible conduit to insert lubricating oil into the dabber, reduced whole oilhole processingamount, the follow-up maintenance of being convenient for has improved the availability factor of equipment.

Through the detector that sets up with dabber fixed connection, can compromise under cooling and lubricated prerequisite, the displacement of accurate survey dabber to increase the footpath for demarcating and provide the basis.

According to the plunger disclosed by the invention, the plunger cover, the spring and the groove are arranged, so that the plunger not only can buffer the sector plate, but also can prolong the service life of the sealing ring in the groove.

Drawings

FIG. 1 is a schematic cross-sectional view of a hot rolled inner water cooled mandrel of the present invention taken through the center of the coolant holes;

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic cross-sectional view taken at B-B of FIG. 1;

FIG. 4 is a schematic structural view of a sector plate;

FIG. 5 is a schematic cross-sectional view taken at C-C in FIG. 4;

FIG. 6 is a schematic cross-sectional view of a hot rolled inner water cooled mandrel of the present invention taken along the center of the plunger;

FIG. 7 is an enlarged view of a portion of FIG. 6;

fig. 8-9 are schematic diagrams of plunger constructions.

In the above drawings: 1. a rotary joint; 2. a hydraulic cylinder; 3. a water ring; 4. a hollow main shaft; 5. a pipe joint; 6. a flexible tube; 7. a sector plate; 8. an extension shaft; 9. a plug; 10. a mandrel; 11. a valve seat; 12. a two-wire dispenser; 13. a plunger; 14. a spring; 15. a spring cover; 16. a screw; 17. a fixed seat; 18. a coupling; 19. a detector; 20. an ultrasonic displacement sensor; 21. a carbon fiber wear plate; 22. a heat insulation plate; 23. a copper alloy wear layer; 31. a water inlet hole; 32. a water diversion hole; 33. a return water hole; 34. a drain hole; 41. a one-way valve; 42; a seal ring; 43. a seal ring; 44. lubricating oil; 45. an exhaust oil outlet; 46. a guide sliding surface.

Detailed Description

The technical solution of the present invention is further explained with reference to the drawings and the embodiments.

As shown in fig. 1, fig. 3 and fig. 6, the hot-rolled internal water-cooling drum comprises a unit fixing support, a rotary joint 1, a hydraulic cylinder 2, a coupler 18, a mandrel 10 and a hollow spindle 4 which is arranged on the unit fixing support and sequentially connected with each other, wherein a sector plate 7 and a plunger 13 are arranged at one end of the hollow spindle 4 and one end of the mandrel 10, a plurality of sliding surfaces are uniformly distributed on the mandrel 10, the plunger 13 is arranged on the sliding surfaces, and one end of the hollow spindle 4, which is far away from the coupler 18, is connected with an extension shaft 8; the lubricating system comprises more than two parallel oil inlet oil paths and a plurality of oil distribution oil paths which are arranged in the mandrel 10, and the lubricating system also comprises a distributor 12, wherein the distributor 12 is connected with the oil inlet oil paths and the oil distribution oil paths of the mandrel 10, so that the lubricating oil entering the oil inlet oil paths is distributed into the oil distribution oil paths; the distributor 12 has two oil inlets and a plurality of parallel oil distribution ports, the two oil inlets are respectively communicated with one oil inlet oil path, and each oil distribution port is respectively communicated with an oil distribution oil path. The number of the oil inlet passages in the mandrel 10 and the oil inlet openings of the distributor 12 can be more than two; through such structure, the lubricating oil can flow in through the mode of being parallelly connected when dispensing, flows out through the mode of being parallelly connected simultaneously, even if because the part lubricating oil is baked to dry and is blockked up the oil circuit under the high temperature toasts, can not lead to lubricating system inefficacy yet.

The lubricating system and the cooling system of the present invention are supplied with lubricating oil and cooling liquid, respectively, through the rotary joint 1 provided at the same position. In a hot rolling line, it is very important to reduce the entire volume of a roll apparatus and to improve reliability while satisfying the function. The plunger type barrel machine of the prior art CN108144987A effectively utilizes the whole space at the rotary joint and can realize lubrication and cooling. However, this document provides an oil passage in the connecting body, thereby feeding lubricating oil into the spindle and further lubricating the friction points. In this way, the mandrel of the winding drum, the connecting body and the like have a plurality of matched components, corresponding oil passages need to be processed among the components, on one hand, the cost is high, and on the other hand, lubricating oil is easy to generate carbon blocks at the interface to block the oil passages. In addition, in the scheme disclosed in the document, when oil is supplied to the mandrel, an oil port on the mandrel is not fixed, and axial sliding exists, so that lubricating oil is easy to leak. Generally speaking, although this method can complete lubrication and cooling, the lubrication of the winding drum is not reliable, and the maintenance after the lubrication has problems is inconvenient.

As shown in fig. 3, the oil inlet path on the mandrel 10 in this embodiment includes an oil inlet hole a and an oil inlet hole B, the oil inlet hole extends in the mandrel 10 to form an oil inlet path, the oil outlet holes include an oil outlet hole C1, an oil outlet hole C2, an oil outlet hole D1, an oil outlet hole D2, an oil outlet hole E1, an oil outlet hole E2, and four oil outlet holes F, and the oil outlet holes extend in the mandrel 10 to form an oil supply path, so that oil is supplied to all sliding surfaces. The oil inlet hole A and the oil inlet hole B respectively correspond to an oil inlet oil way, each oil outlet hole respectively corresponds to an oil supply oil way, and more than one oil supply oil way is connected with one oil distribution oil way.

The lubrication principle of the embodiment is as follows: lubricating oil enters a hydraulic cylinder 2 through a rotary joint 1, and the rotary joint is a universal rotary joint in the prior art; and then the flexible pipe 6 and the pipe joint 5 are connected to the oil inlet A, B of the mandrel 10, two paths of lubricating oil respectively enter two oil inlets of the distributor 12 through two oil inlet oil paths and then enter a plurality of oil distribution oil paths, each oil distribution oil path is connected in parallel, the oil supply oil path is connected to the oil distribution oil path, the oil supply oil path supplies lubricating oil to the oil outlet, and the lubricating oil sprayed from the oil outlet is sprayed to each sliding surface of the mandrel 10, so that the sliding surfaces are lubricated.

The lubricating oil sent out by the rotary joint 1 is sent into the mandrel 10 through the flexible pipe 6, and only the oil way processing on the mandrel 10 needs to be considered, so that the cost is reduced; and the mode that flexible pipe 6 is connected, it is also easier to shut down the detection after the lubricated problem that appears of rotary machine, through dismantling flexible pipe 6, can utilize other equipment to carry out pressure detection and cleanness to dabber 10 interior oil circuit, has reduced the whole maintenance time of production line that rotary machine shut down overhauld and lead to.

In the invention, the inclined plane on the mandrel 10 corresponds to the inclined plane of the plunger 13; the plunger 13 is axially fixed on the hollow main shaft 4; when the mandrel 10 is moved in the axial direction, the plunger 13 is displaced in the radial direction, thereby lifting up the sector plate 7. In the process, lubricating oil is fed to the contact position of the plunger 13 and the mandrel 10 through an oil distribution oil path; lubricating oil enters a lubricating position through a radial oil distribution branch connected with an oil distribution oil way, so that lubrication of a contact position is realized.

The inventor finds that when the plunger 13 is used for jacking up the sector 7, the acting force is large, so that the steel coil shakes and the like, and the coiling effect is influenced; the invention designs a new plunger 13 structure; referring to the attached drawings 8-8, a blind hole is formed in the plunger 13, a spring 14 is installed in the blind hole, and the spring 14 is made of WV-series high-temperature-resistant spring steel and can resist temperature up to 500 ℃; the upper end of the spring 14 is provided with a spring cover 15; when the plunger 13 is acted on by the mandrel 10 to jack up the sector plate 7, the spring cover 15 is firstly jacked up by the action of the spring 14, the action force of the plunger 13 on the sector plate 7 is buffered, and the rolling of the steel material is more stable. A spring cover 15 arranged at the upper end of the spring 14 is fixed in the plunger 13 by a screw 16 at ordinary times; in use, it is required to be mounted in the drum, at which point the screw 16 is removed; due to the co-confinement of the sector plate 7 and the spindle 10, the spring cover 15 and the spring 14 are thus confined in the blind hole of the plunger 13.

Referring to fig. 7, the plunger 13 is provided with grooves on its side surfaces perpendicular to the end surfaces of the sector plates 7, the grooves on the side surfaces being connected to each other to form a loop, i.e., a groove forming a closed loop around the plunger 13, in which a seal ring is placed, and after the seal ring is placed in the groove, the lubricating oil in the groove does not flow out through the gap between the plunger 10 and the hollow main shaft 4. Meanwhile, a sealing ring is also arranged between the hollow main shaft and the mandrel, and the sealing ring is arranged in a groove on the hollow main shaft or the mandrel, so that isolation is formed between the hollow main shaft and the mandrel, and lubricating oil between the mandrel and the hollow main shaft is prevented from flowing out; relative sliding occurs between the hollow spindle and the mandrel and relative rubbing of the seal ring 42 occurs. In addition, a sealing ring 43 is also arranged between the hollow mandrel and the extension shaft, and the sealing ring is arranged in a groove on the hollow main shaft or the extension shaft; the seal is stationary. By means of a seal between the hollow spindle and the spindle, a seal between the hollow spindle and the extension shaft, and a seal between the plunger and the hollow spindle. The spool of the present invention provides a lubrication space within the spool by two slidable seals and one static seal, and the lubrication oil 44 in the lubrication space can flow. Oil is supplied to the lubricating space through the oil supply hole, and the lubricating oil is guided to the guide surface of the sector plate through the exhaust oil outlet 45; the exhaust oil outlet is provided with a one-way valve, and the lubricating oil and the gas can be sprayed out from the lubricating space. The structure forms a closed lubricating oil space in the winding drum, the lubricating oil is lubricated by the guide surface of the sector plate after being discharged, and the whole system has no leakage of the lubricating oil; thereby well and independently separating lubrication and water cooling. Meanwhile, the lubricating oil is directly guided to the sector plates after being discharged, so that the problem of lubrication is not separately considered for the guide surfaces of the sector plates.

Meanwhile, the technical problem that the service life of the hot-rolled winding drum in the prior art is short due to cooling and lubricating problems is solved.

The spring 14 arranged in the plunger 13 of the invention buffers the impact force on the sector plate 7, and on the other hand, the friction speed of the sealing ring in the groove relative to the hollow main shaft 4 is reduced due to the action of the spring 14, thereby reducing the loss of the sealing ring in use and prolonging the service life of the sealing ring. According to the invention

As shown in fig. 8 and 9, the plunger 13 uses forged steel as a base, and a copper alloy wear-resistant layer 23 is deposited on each sliding mating surface. The fan-shaped plate 7 and the mandrel 10 are both provided with T-shaped grooves, and the plunger 13 is provided with T-shaped hooks which are installed in a matched mode with the T-shaped grooves.

Referring to fig. 1, a water ring 3 is fixed at one end of the hollow spindle 4 close to the coupler 18, a water inlet 31 is arranged on the water ring 3, a through axial main water hole, a through backflow water hole 33 and a radial shunt water hole 32 are formed in the hollow spindle 4, a drain hole 34 is arranged on the extension shaft 8, and an axial water hole and a radial water hole are formed in the sector plate 7. The water splitting holes 32 on the hollow main shaft 4 are connected with the radial water holes on the sector plates 7 through flexible pipes 6. Cooling water enters the hydraulic cylinder 2 through the rotary joint 1 and then flows into the axial main water hole and the diversion water hole 32 from the water inlet hole 31 on the water ring 3, and water flow in the axial main water hole is discharged from the water discharge hole 34 through the water flow channel; the cooling water entering the sector plate 7 from the water distribution holes 32 then passes through the water return holes 33 and then is discharged from the water discharge holes 34 through the water flow passage.

The specific structure of the sector plate 7 is shown in fig. 4 and 5, and the sector plate 7 comprises an axial water hole, a radial water hole and a plug; the water hole can be blocked by a plug 9 or other methods. The radial water hole is communicated with the axial water hole to form a loop; radial water holes are respectively arranged on the left side and the right side of the fan-shaped plate 7, so that a water flow channel of the radial water hole, the axial water hole and the radial water hole is formed; the water holes on the sector plate 7 are communicated with the water diversion hole 32 and the water return hole 33 on the hollow main shaft 4 through the pipe joint 5 and the flexible pipe 6 respectively by the radial water holes on the left side and the right side, cooling water enters the sector plate 7 through the radial water holes, cools the sector plate 7 through the axial water holes in the sector plate 7, flows back to the water return hole 33 inside the hollow main shaft 4 through the radial water holes through the flexible pipe 6, finally converges to the water drainage hole 34 of the extension shaft 8, and is discharged out of the winding drum.

In the present invention, cooling water is used as the cooling medium for cooling the drum, and other safe liquid with high specific heat capacity and low melting point can be selected as the cooling medium, which is not listed here.

In the invention, because the end part is supplied with cooling liquid and lubricating oil through the rotary joint 1, in order to solve the problem of measuring the displacement of the mandrel 10, a detector 19 is fixedly connected to the coupling 18 fixedly connected with the mandrel 10; the detector 19 is fixedly connected with the coupler 18 through the fixed seat 17, and the detector 19 is fixedly connected with the mandrel 10, so that the displacement of the mandrel 10 can be accurately calibrated by accurately measuring the displacement of the detector 19, and the expansion diameter of the winding drum can be accurately calibrated.

In the present invention, a displacement sensor 20 is further provided, and the displacement sensor 20 is mounted on the unit fixing bracket and is used for measuring the displacement of the detector 19. The displacement of the detector 19 is also typically measured by other inductive sensors, but in the context of the present invention, inaccuracies in detection are often caused by environmental influences due to plant environmental problems. The present invention therefore uses a laser or ultrasonic displacement transducer 20. By means of the ultrasonic displacement sensor 20 arranged on the unit fixing bracket, displacement is measured by means of ultrasonic waves or laser light reflected by the detector 19, and even if partial vibration occurs in the detector 19, accurate measurement of the displacement sensor 20 is not affected. For the present invention, the distance between the detector 19 and the displacement sensor 20 is at least 50mm, avoiding the problem of wear due to excessive bounce. Through the position setting of sensor and detector 19, corroborated the accuracy that takes place displacement detection under the micro-vibration condition, avoided influencing the reel and expand footpath and markd.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims

1. The utility model provides a hot rolling reel, includes the unit fixed bolster, install in rotary joint, pneumatic cylinder, shaft coupling, dabber, plunger, sector plate, hollow main shaft on the unit fixed bolster, hollow main shaft cover is established at the spindle, a plurality of glide planes of dabber surface evenly distributed, the plunger with glide plane sliding contact cooperation still includes lubricating system and cooling system, and wherein lubricating system lubricates plunger and glide plane contact position through the oil circuit, and wherein cooling system cools off its characterized in that through the water route to hollow main shaft and sector plate: the lubrication system and the cooling system are supplied with lubricating oil and cooling liquid, respectively, through rotary joints provided at the same position.

2. The hot rolled coil as claimed in claim 1, wherein the plunger has grooves on its sides parallel to the axis of the plunger, the grooves on the sides being connected to each other to form a loop, the grooves having a sealing ring disposed therein.

3. The hot rolled reel as claimed in claim 1, wherein the mandrel is provided with a groove, and a sealing ring is disposed in the groove, the sealing ring forming a slidable seal between the mandrel and the hollow main shaft.

4. The hot rolled coil as claimed in claim 1, wherein an extension shaft is connected to an end of the hollow main shaft remote from the coupler.

5. The hot rolled reel as claimed in claim 4, wherein the hollow main shaft and the extension shaft are connected at a position to form a seal by a sealing ring disposed in the groove.

6. The hot rolled coil as claimed in claim 1, wherein the lubrication system comprises two or more parallel oil inlet paths and two or more parallel oil distribution paths disposed within the mandrel.

7. The hot rolling reel as claimed in claim 6, wherein the oil inlet path and the oil distribution path are respectively connected to a distributor, wherein the distributor comprises more than two oil inlets, more than two oil distribution ports and a main cavity; the oil inlet and the oil distributing port are respectively connected with the main cavity; wherein the single oil inlet is connected with the single oil inlet path; the single oil distributing port is connected with the single oil distributing oil way.

8. The hot rolled coil as claimed in claim 6, wherein the oil inlet passage on the mandrel is connected to the rotary joint by a flexible tube.

9. The hot rolled reel as claimed in claim 1, wherein the oil outlet hole supplies oil to the sliding surface, and the oil outlet hole is connected to the oil distribution passage through an oil supply passage.

10. The hot rolled coil as claimed in claim 7, wherein more than one oil supply passage is connected to one oil distribution passage.

11. The hot rolled reel as claimed in claim 1, wherein a lubricating space for supplying oil to the sliding surface of the mandrel is formed in the hot rolled reel, the lubricating space is supplied with oil through the oil outlet hole, and the lubricating space is exhausted with the oil through an exhaust oil outlet provided in the hot rolled reel.

12. The hot rolling reel as claimed in claim 11, wherein the lubricating oil discharged from the exhaust oil outlet is led directly to the guide surface of the sector plate.

13. The hot rolled spool as claimed in claim 11, wherein the exhaust outlet is internally provided with a one-way exhaust valve.

14. A hot rolled coil as claimed in claim 1, wherein: a water ring is fixed at one end of the hollow main shaft, which is close to the coupler, a water inlet hole is arranged on the water ring, a through axial main water hole, a through backflow water hole and a radial shunting water hole are formed in the hollow main shaft, and a drain hole is formed in the extension shaft; the two ends of the fan-shaped plate are respectively provided with more than one radial water hole, the fan-shaped plate is also provided with more than one axial water hole, and the corresponding radial water holes at the two ends are connected through one axial water hole to form a cooling liquid passage; one of the radial water holes at the two ends is a water inlet hole of the fan-shaped plate, and the other one is a water outlet hole of the fan-shaped plate.

15. The hot rolled reel as claimed in claim 14, wherein the sector plate water inlet hole and the sector plate water outlet hole are connected to the hollow main shaft through flexible pipes.

16. The hot rolled reel as claimed in claim 14, wherein the water inlet holes in the water ring are connected to the rotary joint through flexible pipes.

17. The hot rolled reel as claimed in claim 1, wherein the plunger has a blind hole formed in an end surface thereof perpendicular to the sector plate, and a spring cover are disposed in the blind hole; wherein the spring cover is in contact with the sector plate and is supported by the spring in the blind hole.

18. The hot rolled spool as claimed in claim 17, wherein the blind hole has a smooth upper portion and a threaded lower portion.

19. The hot rolled reel as claimed in claim 1, wherein an end of the plunger contacting the sector plate is formed as a T-shaped hook; the T-shaped hook head of the plunger piston is matched with the T-shaped groove of the sector plate.

20. The hot rolling reel as claimed in claim 1, further comprising a detector fixedly connected to the coupling via a fixing seat, and further comprising an ultrasonic or laser displacement sensor mounted on the unit fixing bracket.