189results about "Rolling mill drives" patented technology

The utility model provides a rolling mill connecting shaft balancing device and a rolling mill, and relates to the technical field of rolling mills, the rolling mill connecting shaft balancing device comprises a base, an upper balancing device and a lower balancing device, the upper balancing device comprises an upper lever structure, an upper hydraulic cylinder, an upper frame and an upper bearing seat; one end of the upper lever structure is rotationally connected with the movable end of an upper hydraulic cylinder arranged on the base, the other end of the upper lever structure is rotationally connected with the base, one end of the upper frame is rotationally connected with the middle of the upper lever structure, and the other end of the upper frame is provided with an upper bearing seat. The lower balancing device comprises a lower lever structure, a lower hydraulic cylinder, a lower frame and a lower bearing seat, one end of the lower lever structure is rotationally connected with the movable end of the lower hydraulic cylinder arranged on the base, the other end of the lower lever structure is rotationally connected with the base, and one end of the lower frame is rotationally connected with the middle of the lower lever structure; and a lower bearing seat is arranged at the other end of the lower frame. The running stability of the rolling mill can be improved.

A stretch reducer and / or calibrating rolling mill for rod-shaped bodies, in particular tubular bodies, in particular hollow bodies, said rolling mill comprising a plurality of rolling stands each comprising a plurality of rolling rollers mutually arranged so as to define a passage for said rod-shaped bodies, wherein said rolling stands are arranged in sequence along a rolling direction so that the respective passages are substantially aligned to define a rolling path substantially parallel to said rolling direction, wherein each of at least two of said rolling stands comprises three rolling rollers.

The utility model relates to a sizing horizontal roller frame which comprises a machine frame and two rollers. The two horizontally-arranged rollers are connected with lifting pieces used for driving the rollers to move in the height direction of the rack, the two lifting pieces work to adjust the distance between the rollers, and steel pipes of different specifications penetrate through the circular channels of different diameters to be pressed. Steel pipes of different specifications are arranged in the circular channels of different diameters in a penetrating mode to be pressed, and each circular channel is designed for the steel pipe of the specific specification, so that it is guaranteed that the steel pipe can obtain the accurate size and shape in the pressing process. In addition, the semicircular grooves of the two rollers form a plurality of circular channels which have different diameters and are used for the steel pipes to pass through along the axial direction of the semicircular grooves, so that the structure can flexibly meet the production requirements of the steel pipes with different specifications.

The utility model provides a rolling mill cardan shaft fixing device which comprises two clamping assemblies, and a clamping position for clamping a rolling mill cardan shaft is formed between clamping plates of the two clamping assemblies. The clamping assembly comprises a mounting seat, a clamping assembly and a clamping assembly, wherein the mounting seat is fixedly connected with the rolling mill frame; the sliding plate is movably connected to the mounting seat; the clamping plate is connected with the sliding plate; and the driving assembly is used for driving the sliding plate to move. The fixing device has the advantages that compared with a traditional frame type fixing device, the two fixing devices are more convenient to maintain, the clamping assembly on one side can be independently maintained, and the fixing device is simpler in structure, not prone to deformation and lower in failure rate.

Control system for cold rolling mills to improve sheet metal thickness uniformity. Sensors monitor the state of the cold rolling mill by measuring (i) roll eccentricity, (ii) roll slips during mill operation, (iii) mill disturbances from roll speed or roll force manifestations, and (iv) unknown disturbances referred to as process noise. The controller analyzes data from sensors to compensate. Data collected during the mill operation by the sensors are delayed in reaching the controller. This communication delay is accounted for by using a filter. Since an objective of the controller software is dynamic identification of eccentricity of the back up rolls, which is non-linear by nature, an Extended Kalman Filter may be used.

The invention relates to an apparatus (1) and to a method for producing flat-rolled products from metal slabs, preferably thick slabs having a thickness of at least 140 mm, wherein the apparatus (1) comprises: at least one casting machine (10) which is designed to cast a strand from a metal, preferably steel; a transport device (30) which is designed to transport the strand in a transport direction along a transport line (T); a separating device (14) which is arranged downstream of the casting machine (10) in the transport line (T) and is designed to separate the strand into individual slabs; a rolling device (50) which is arranged downstream of the separating device (14) in the transport line (T) and is designed to roll each slab into a flat-rolled product; a temperature setting system (20) comprising an induction heating device (22) which is arranged between the separating device (14) and the rolling device (50) and is designed to heat the slabs to a hot-rolling temperature; and a control device (100) which is in communication with the induction heating device (22) and is designed to actuate the induction heating device (22) such that each slab is heated in a non-uniform manner along its longitudinal extent.

A reversing roughing mill for rough rolling an aluminium or aluminium alloy product fed along a feed plane, the roughing mill comprising: a reversing horizontal roughing stand 1; a first cooling device 10 arranged upstream of the reversing roughing stand 1 and configured to cool the product entering the reversing roughing stand 1 from above with a cooling liquid; and a second cooling device 15 arranged downstream of the reversing roughing stand 1 and configured to cool the product entering the reversing roughing stand 1 from above with the cooling liquid.

The invention relates to the technical field of round wood rolling, and discloses a speed reduction transmission distribution system and method of a rod and wire three-roller mill. The system comprises an integrated speed reduction distribution box, two 30-degree bevel transmission boxes and five couplings, in the integrated speed reduction distribution box, single-path input power is synchronously distributed into three paths of output through a gear set, the included angle between every two adjacent output shafts is 30 degrees, and after the directions of the bevel transmission boxes are converted, the included angle between the three paths of output axes is 120 degrees, and the three paths of output axes correspond to an input shaft of a three-high rod and wire mill rack. A traditional overall module type and external reduction gearbox structure is abandoned, transmission structure simplification, cost reduction and convenient maintenance are achieved through collaborative optimization of parts, meanwhile, transmission efficiency and stability are improved, the problems that in the prior art, the structure is complex, and manufacturing and assembling difficulty is large are solved, and the power transmission device is suitable for power transmission scenes of various rod and wire three-roller mills.

The utility model discloses an off-line short-stress finish rolling mill roll gap measurement and roll groove pull welding auxiliary device which comprises a frame body, a first driving assembly used for driving an upper roll of a short-stress finish rolling mill to rotate in the forward direction, a second driving assembly used for driving a lower roll of the short-stress finish rolling mill to rotate in the reverse direction and a controller. The first driving assembly and the second driving assembly are both fixedly connected with the frame body. And the controller is used for controlling the first driving assembly and the second driving assembly to simultaneously drive an upper roller and a lower roller of the short-stress finish rolling mill to rotate oppositely so as to measure a roller gap, or independently controlling the first driving assembly to drive the upper roller of the short-stress finish rolling mill to rotate so as to carry out rolling groove pull welding. The device can assist in measuring the roll gap and assisting in drawing and welding the rolling groove in the off-line state of the short-stress finish rolling mill, the stop time of a steel rolling production line can be shortened, the production efficiency is improved, and safety accidents are effectively prevented.

This invention discloses a high-speed metal wire rod finishing mill, relating to the technical field of metal wire rod processing. It includes a support frame, on which a motor is mounted. The motor's output end is connected to a rotating shaft, and a drive roller is mounted on the outer side of the shaft. The drive rollers are symmetrically arranged on the support frame. A lifting assembly is mounted on the support frame, and a cooling assembly is located below the lifting assembly. The cooling assembly includes nozzles that perform cooling through deflection and sweeping. A straightening assembly is mounted on the support frame, including straightening rollers. The straightening rollers' lifting and lowering adapts to the straightening requirements of different wire rod specifications. In this high-speed metal wire rod finishing mill, two sets of drive rollers are meshed and driven by gear assemblies on the outer side of the rotating shaft, ensuring consistent rotation speed and improving overall rolling accuracy. The driven rollers lift and lower synchronously, reducing the problem of reduced accuracy caused by multiple drives. The nozzles spray coolant for cooling, further optimizing rolling accuracy.

The invention relates to the technical field of aero-engine blade manufacturing, and particularly discloses a device for controlling a blade rolling chuck to rotate and a rotating method thereof. The device is composed of a chuck rotating device and a guide control device. And the chuck rotating device realizes power transmission through a chuck rotating shaft, an angular plate, a guide rod, a turntable, a core shaft and a roller. The guide control device comprises a fixed plate, a screw, a fixed guide plate, a movable guide plate and the like, and is connected with the machine tool through the fixed plate. The core rotating method is as follows: in the rolling process of the blade, a roller rolls in a groove formed by a fixed guide plate and a movable guide plate, and the rotation of a chuck rotating shaft is controlled through mechanical linkage; the screw is rotated to drive the movable guide plate support to move, so that the inclination angle of the movable guide plate is changed, and the position of the roller and the rotation angle of the chuck are accurately adjusted. The method can effectively compensate the molded surface springback in the blade rolling process, improve the machining quality, reduce the number of times of die finishing, improve the production efficiency and reduce the cost.

The invention relates to a method for operating a rolling mill and to a corresponding rolling mill. The rolling mill comprises a plurality of rolling stands n, numbered n=1 to N, arranged one behind the other in a rolling direction R, each with two rotary-driven work rolls for rolling a metal strip. Furthermore, a strip tension control loop 120 is provided for controlling the actual strip tension of the metal strip 20 in a drawing section 110 between two rolling stands arranged one behind the other to a predetermined target strip tension. In order to reduce thickness deviations in the metal strip being rolled due to acceleration and / or deceleration phases within the framework of said strip tension control, the invention provides that the control variable is applied not only to a rolling stand limiting the drawing section 110 on the exit or entry side, but also to the rotary drives for other rolling stands or rolls upstream or downstream.According to the invention, at least one rotary drive is integrated into the active belt tension control both before and after the belt section.

The present application relates to the technical field of metal rolling, in particular to a multi-stand Y-shaped aluminum alloy bar rolling equipment, comprising four groups of integrated rolling mills and two groups of single-drive rolling mills arranged in a line and connected horizontally, the integrated rolling mills and the single-drive rolling mills are of the same structure, the four groups of integrated rolling mills are butt-jointed at the head and tail, a connecting mechanism is installed between every two adjacent groups of integrated rolling mills, a limiting Y-ring is arranged on the connecting mechanism to limit the bar and prevent burrs, the two groups of single-drive rolling mills are also connected by a connecting mechanism, the rear sides of the four groups of integrated rolling mills and the two groups of single-drive rolling mills are driven to rotate by driving mechanisms, which is conducive to reducing the probability of stand stall, the two groups of single-drive rolling mills are separately driven by single-drive components, which is conducive to rounding of various specifications, compensation for long-term wear and tear, making the pass more close to the design value, the three-roller Y-shaped rolling mill has large rolling pressure, high torque, adjustable pass, is not easy to produce ears during rolling, and rounding is more accurate.

The utility model relates to the field of rod and wire short stress rolling mills, in particular to a transmission shaft and speed reducer connecting shaft sleeve which comprises a shaft sleeve body, one end of the shaft sleeve body is provided with a first round hole used for allowing an output shaft of a speed reducer to be inserted, and the other end of the shaft sleeve body is provided with a boss integrally formed with the shaft sleeve body. And a plurality of counterbores which are used for insertion of connecting pieces and are connected with an output shaft of the speed reducer are formed in the axial direction of the boss. The connecting shaft sleeve can be selectively connected with a standard transmission shaft flange, meanwhile, the stress area of a key between the transmission shaft flange and the connecting shaft sleeve is increased, and the possibility that a connecting bolt of the transmission shaft flange and the connecting shaft sleeve is fractured due to overlarge stress is reduced.

The utility model discloses a novel mill kinetic energy recovery device relates to kinetic energy recovery technical field, the utility model discloses a flywheel energy storage mechanism and stepless speed changer, flywheel energy storage mechanism includes vacuum chamber, and the vacuum chamber is equipped with the rotor and two stators of forming axial flux, and the rotor includes the mandrel, and the mandrel is integrally connected with the flywheel, and the flywheel both sides edge all are fixed with permanent magnet, and two stators symmetrical setting are in the permanent magnet outside of flywheel both sides. The utility model discloses a flywheel and permanent magnet combination instead of motor rotor, and can constitute axial flux's permanent magnet motor with two stators cooperation, compared with the combination of the flywheel and motor, both need not the shaft coupling connection, and have the advantage that compactness is stronger, response speed promotion and efficiency promotion, is applicable to the use under the rolling mill environment, through the flywheel and recycles the kinetic energy of the idle running of rolling mill to utilize, can reduce the waste of rolling mill cost, realizes the purpose of reducing cost and increasing benefit.

The application discloses a copper flat wire drawing process and device, comprising the following steps: a, taking a rough wire, according to the width and thickness of the copper flat wire (1) to be obtained, an odd-shaped die drawing method is used to obtain a first blank wire (2), the thickness of the first blank wire (2) is 1.5-3 times of the thickness of the copper flat wire (1), the first blank wire (2) is formed with flying wings (3) on both sides of the width direction, the cross-sectional area of the first blank wire (2) is 1.05-1.2 times of the cross-sectional area of the copper flat wire (1), and the thickness of the flying wings (3) is 1.05-1.1 times of the thickness of the copper flat wire (1); b, a pair of power-driven rolls (8) are used to roll the first blank wire (2), so that the thickness of the first blank wire (2) is extruded to be flush with the flying wings (3) on both sides, and a second blank wire (4) is obtained; and c, the second blank wire (4) is drawn into the copper flat wire (1) by using the odd-shaped die drawing method. The application has the advantages of being capable of producing a copper wire with a high width-thickness ratio, low cost and high qualification rate.

The invention discloses an aluminum alloy plate cold rolling device which comprises a main body, a working table is arranged in the main body, a gap is formed in the middle of the working table, a pair of rollers rotationally connected into the main body are correspondingly arranged in the working table, the aluminum alloy plate cold rolling device further comprises a guide shaft, a rolling shaft and a rolling shaft, the linkage shaft is arranged on the side, away from the workbench, of the roller and rotationally connected with the main body; one end of the shifting fork is in threaded connection with the linkage shaft, and the other end is arranged at two ends of the limiting roller; and the linkage assembly is used for linking the guide shaft and the linkage shaft. The rollers can axially move, and under the arrangement of the shifting fork and the linkage assembly, in the process that the rollers rotate to roll an aluminum alloy plate, the rollers can axially move in a reciprocating mode, and the two rollers keep moving relatively, so that the surfaces of the rollers can be more fully utilized for heat conduction, heat transfer is greatly improved, and edge defects of the plate are avoided; and the quality of the produced aluminum alloy plate is better.

The invention provides a multi-node pressure monitoring temper mill AGC hydraulic safety protection device and method, and relates to the field of cold-rolled sheet production equipment in the metallurgical industry. The problems that an existing AGC hydraulic system lacks real-time pressure monitoring, and a hydraulic cylinder is overloaded and exploded due to response delay of an overflow valve are solved. According to the device, through cooperative work of a triple pressure monitoring module, a signal processing module, a grading protection execution module and a reset self-checking module, three monitoring points are deployed at key nodes of a hydraulic loop, and rapid protection and fault positioning after pressure overrun are achieved in combination with millisecond-level signal processing and grading protection logic. According to the corresponding protection method, monitoring point installation, signal processing, protection triggering and system resetting are completed according to a standardized process. According to the invention, based on the redundancy design of triple pressure monitoring nodes and a millisecond-level response mechanism, comprehensive improvement of safety performance, operation benefits and system reliability is realized.

The present application belongs to the technical field of cold rolling pipe mill, and particularly relates to a balancing device and method for coaxial bidirectional rotation of a crankshaft segment block of a high-speed cold rolling pipe mill. The device is composed of a frame assembly, a driving motor, a shaft coupling, a high-speed shaft, a first gear, a second gear, a connecting rod mechanism, an idler wheel, an idler wheel shaft, a first balancing mechanism, a large gear, a crankshaft, a second balancing mechanism and a base. The first balancing mechanism arranged between the high-speed shaft and the crankshaft integrates the balancing shaft and the segment block in the double-shaft balancing shaft system of the prior art into the crankshaft shaft system. The present application not only inherits the balancing effect of the double-shaft balancing, but also greatly reduces the size and weight of the crankshaft transmission system along the rolling direction, greatly reduces the investment of the equipment, greatly reduces the alternating force and bending moment acting on the crankshaft, prolongs the service life of important components such as the crankshaft and bearings, improves the reliability of the equipment, and reduces the maintenance cost.

The rolling equipment comprises a machine frame structure, the machine frame structure comprises a bottom table, two vertical frames are vertically and fixedly connected to the two sides of the top face of the bottom table, two wide through openings are formed in the upper portions of the two vertical frames, two narrow through openings are formed in the lower portions of the two vertical frames, and the two wide through openings are communicated with the two narrow through openings. Two n-shaped frames are vertically and slidably connected to the inner sides of the two wide ports in a sleeving manner, and a top plate is fixedly connected between the top surfaces of the two n-shaped frames; the upper roller assembly structure and the lower roller assembly structure are installed on the rack structure in an inserted connection mode, the upper rolling assembly is installed on the two first end blocks in an inserted connection mode, meanwhile, the lower rolling assembly is installed on the two second end blocks in an inserted connection mode, and a roller or roller bodies at other positions can be replaced more conveniently; according to the driving structure, the two-sided tooth synchronous belt is adopted to drive the first spline head and the second spline head, a universal joint does not need to be adopted for driving, transmission loss is reduced, and energy loss is reduced.

The invention relates to a method for operating a rolling train, and to a corresponding rolling train. The rolling train has a plurality of roll stands n, where n = 1 to N, which are arranged one behind the other in a rolling direction R and each have two rotationally driven working rolls for rolling a metal strip. Furthermore, a strip tension control circuit 120 is provided for controlling the actual strip tension of the metal strip 20 to a predefined target strip tension in a tension section 110 between two roll stands arranged one behind the other. In order to reduce thickness deviations in the metal strip to be rolled, said deviations being caused by acceleration and / or deceleration phases during said strip tension control, the invention proposes that a manipulated variable is applied not only to a roll stand delimiting the tension section 110 on the outlet side or inlet side, but also to the rotary drives for other roll stands or rolls upstream or downstream. Thus, according to the invention, at least one rotary drive upstream and downstream of the tension section is integrated into the active strip tension control.

The invention relates to the technical field of oriented silicon steel cold rolling production, in particular to a cold continuous rolling method and equipment for efficiently producing low-temperature high-magnetic-induction oriented silicon steel. According to the method, efficient and stable production of the thin-gauge low-temperature high-magnetic-induction oriented silicon steel can be achieved, and meanwhile the excellent plate shape and the high-magnetic-induction performance are guaranteed; through cooperative control of targeted roll shape design and process parameters, the problems of edge drop and convexity of the steel strip can be accurately regulated and controlled, the strip shape defect easily occurring in the rolling process of the thin-gauge steel strip is effectively avoided, the finished steel strip has excellent straightness, and the rolling quality of the thin-gauge steel strip is improved. A good foundation is provided for smooth proceeding of subsequent procedures and stacking use of final products; meanwhile, by optimizing texture orientation control in the cold rolling process and combining with an efficient inhibitor formed through subsequent nitriding treatment, the magnetic induction intensity of the finished low-temperature high-magnetic-induction oriented silicon steel is remarkably improved, meanwhile, iron loss is reduced, the magnetic performance of the product is more excellent, and the use requirement of power equipment for efficient soft magnetic materials can be better met.

The invention discloses a universal shaft for a thin oil lubrication electromagnetic silicon steel continuous mill, and relates to the technical field of couplings, the universal shaft comprises a roller end shaft sleeve, a speed reducer shaft sleeve, an oil tank, a connecting pipe and a cross shaft assembly, the roller end shaft sleeve and the speed reducer shaft sleeve are both provided with flange forks through bolts, and the flange forks are rotatably provided with the cross shaft assembly; and a connecting pipe is connected between the two cross shaft assemblies through a welding fork. By arranging an automatic thin oil lubricating system composed of the oil tank, the oil inlet ring, the circulating oil cavity, the oil pressure distributor, the circulating distributor and the like, manual oil adding operation is not needed, and the problems of roller abrasion, balance failure and the like caused by manual oil adding missing are thoroughly avoided; the hinge structure of the adjusting connecting rod can automatically adapt to the change of the center distance after the roller is ground, equipment installation and roller replacement are facilitated through the arrangement of the carrier roller position, the overall structural design gives consideration to the adaptability and maintenance convenience of the equipment, and the production efficiency of the silicon steel continuous rolling unit is improved.

The application discloses a high-precision adjustable three-shaft thread rolling machine, which comprises a machine base, a shaft base one is installed on one side of the upper portion of the machine base, a main shaft is rotationally connected to the inner wall of the shaft base one, a rotating wheel is installed on one side of the outer wall of the main shaft, a driving mechanism is installed on the machine base and is used for driving the rotating wheel to rotate, a transmission mechanism is arranged at one end of the main shaft, and a threaded thread rolling shaft one, a threaded thread rolling shaft two and a threaded thread rolling shaft three are installed on one side of the transmission mechanism. Through the arrangement of the adjusting mechanism, the linkage adjusting mechanism is adopted to realize the synchronous position adjustment of the threaded thread rolling shaft two and the threaded thread rolling shaft three. Compared with the independent driving mode of the threaded thread rolling shaft two and the threaded thread rolling shaft three on the two sides, the operation process is obviously simplified, the adjusting steps are reduced, the device shows stronger flexibility when coping with different specifications of processing requirements, and the overall use convenience and scene adaptability of the device are effectively improved.

A forge and method of forging is provided. The forge converts an asymmetric railroad rail to a symmetric railroad rail through a combination of vertical and horizontal forging operations. The rail is linearly translated to heating and forging stations on a roller table. The asymmetric to symmetric conversion can be completed without the need for reorienting the rail except along a single translational axis.

The application discloses a production method for controlling the shape of a high-strength steel plate in winter TMCP, which comprises the following steps: step one, setting the slab discharge temperature to be 1220-1270 DEG C, and performing rough descaling once; step two, rough rolling stage; step three, finish rolling stage; step four, pre-straightening treatment is performed on the steel plate after rolling; step five, the opening cooling temperature of the steel plate with a thickness of 10-20 mm is greater than or equal to 780 DEG C; step six, the water temperature of the rapid cooling device is controlled to be 26+ / -4 DEG C, the edge is shielded, the head and tail are shielded, the frame height of the rapid cooling device for the steel plate with a thickness of 10-20 mm is set to be 500-600 mm, and the frame height is divided into four areas A, B, C and D; and step eight, a 9-roller hot straightening machine is adopted for straightening, the straightening temperature is less than or equal to 350 DEG C, the entry roll gap of the straightening machine is the thickness of the steel plate minus 2-9 mm, and the straightening speed is 0.5-1.0 m / s. The method can effectively avoid the warping, head buckling and edge wave of the high-strength steel plate caused by the non-uniform temperature after rapid cooling, and improve the production efficiency.

The utility model discloses an AWC cylinder replacing device of a vertical rolling mill. The AWC cylinder replacing device comprises a push-out mechanism capable of pushing an AWC cylinder out of a mounting hole and a suspension mechanism capable of hoisting and transferring the AWC cylinder. The push-out mechanism comprises a push-out trolley capable of being placed in the rolling mill rack and walking, a push-out rod capable of penetrating through a mounting hole and pull rings distributed and mounted on the rolling mill rack, the push-out trolley is provided with a lifting point, a mounting position of the push-out rod and a chain block, and the chain block of the push-out trolley is used for driving the push-out trolley and the push-out rod to push out the AWC cylinder after being correspondingly connected with the pull rings; the front portion of the suspension rail is overhung, the rear portion of the suspension rail is arranged on a rolling mill rack, the suspension trolleys are distributed on the suspension rail in a front-back mode and can walk, the supporting beam is used for supporting and being connected with the rear end of an AWC cylinder body, chain blocks are arranged on the suspension trolleys, and the chain blocks of the suspension trolleys in the front and the rear are used for lifting the front end of the AWC cylinder body and the supporting beam respectively. According to the device, the AWC cylinder can be quickly and conveniently disassembled and assembled, and the occupied space is small.

The invention relates to a rolling mill assembly (1) comprising two cardan shafts (4, 5) which are each connected to a drive device (13, 14), wherein the first rolling mill-side joint (6) is at a first distance (10) from the first working roller (2) and the second rolling mill-side joint (7) is at a second distance (11) from the second working roller (3), wherein the first and second distances (10, 11) differ by 0.5 m to 4 m, and, in at least one cardan shaft (4, 5), a device (12) for changing the length is located between the rolling mill-side joint (6, 7) and the working roller (2, 3).

A continuous pipe twisting roller is used for continuous online machining of a twisting pipe and is provided with a main frame, a roller set is further arranged on the main frame, at least two rollers evenly distributed in the circumferential direction of the twisting pipe in the radial direction are arranged in the roller set, and the rotation axis direction of the rollers is perpendicular to the axis direction of the center line of the twisting pipe. The rollers extrude each other to clamp the torsion pipe so that the torsion pipe can be fixed in the radial direction and move freely in the axial direction, a rotating device is further arranged between the roller set and the main frame, and the roller set can rotate relative to the central axis of the torsion pipe under the action of the rotating device. And the torsion tube generates radial torsion while freely penetrating through the roller group. According to the technical scheme, on-line continuous twisting of the pipe is achieved by arranging the roller set and the rotating device. According to the technical scheme, the structure is simple, repair and maintenance are easy, the application range is wide, cost is saved, and efficiency is improved.

The utility model provides a locking mechanism for a connecting shaft head of a blooming mill, and belongs to the technical field of steel rolling equipment structures. According to the locking mechanism, through the design that the inner side of the tenon is elastically connected with the mounting base and the outer side of the tenon is matched with the shape of the groove in the roller shaft, the problems that under the high-speed working condition of the blooming mill, the blooming mill vibrates due to the fact that no axial limiting locking mechanism exists, the overall working reliability of equipment is affected, and the service life of the blooming mill is prolonged are solved. The service life and the production efficiency of the equipment are further influenced. The locking mechanism is arranged on a connecting shaft head of the blooming mill and is used for locking a roller shaft inserted into the connecting shaft head in the axial direction; comprising a mounting seat and a tenon which are mounted on a spindle head of a connecting shaft; the inner side of the tenon is elastically connected with the mounting seat through a spring, and the outer side of the tenon is matched with the groove in shape; when the roller shaft is inserted into the connecting shaft head, the spring is compressed, and the tenon moves outwards in the radial direction. And when the tenon relatively moves to the groove, the spring rebounds, and the tenon is clamped into the groove.