CN113198855B - A swing lifting spring damping gravity billet turning machine - Google Patents

Abstract

The present invention provides a swing lifting spring damping gravity billet turning machine, wherein a sliding spiral cam adjustment mechanism is connected to a variable four-bar swing mechanism, a swing power mechanism is connected to a variable four-bar swing mechanism, a lifting power mechanism is respectively connected to the variable four-bar swing mechanism and an adjustable tensioning sprocket lifting mechanism, and the lifting power mechanism is used to provide power for the adjustable tensioning sprocket lifting mechanism; the adjustable tensioning sprocket lifting mechanism is arranged on a column, and the adjustable tensioning sprocket lifting mechanism is connected to a gravity spring tilting mechanism. The swing lifting spring damping gravity billet turning machine can turn the high-temperature billet out of the heating furnace of the hot rolling production line of the profile/bar by 90° before rolling, so as to meet the requirements of the on-site rolling deformation process, and can remove the overheated iron oxide on the surface of the billet, improve the surface appearance quality of the rolled material, increase the on-site production rhythm, and reduce process failures.

Description

Swing lifting spring damping gravity steel billet turnover machine

Technical Field

The invention relates to the technical field of steel rolling, in particular to a swinging lifting spring damping gravity billet turning machine.

Background

At present, the domestic hot rolling production line generally adopts two modes of manual intervention steel turning or mechanical turning to solve the problem of field hot billet turning. The manual steel turning site has the advantages of large workload, severe environment, easy initiation of personal safety accidents, special personnel and unfavorable reasonable allocation of human resources, the mechanical turning adopts a hydraulic turning machine, the structure is complex, the volume is heavy, a special hydraulic transmission mechanism is required to be configured, an actuating mechanism is arranged below a tapping roller way, the site installation and the operation maintenance are extremely inconvenient, a concrete foundation is required to be separately and additionally poured and installed, the cost is high, the accumulation of oxide iron sheets in a slag discharge ditch is extremely easy to cause, the working efficiency of the roller way and a slag flushing system is influenced, the professional skill quality requirement and the maintenance and use cost of site personnel are high, and the sudden oil fire accident is extremely easy to be caused once the leakage fault of the hydraulic system occurs, so that the site personnel and the property are greatly lost. Therefore, how to develop an automatic billet turnover machine with simple structure, flexible and efficient action, convenient disassembly and assembly and low maintenance and use cost, and meeting the field rolling process requirement is a technical bottleneck problem to be solved in the current hot rolling production field.

Disclosure of Invention

The invention aims to provide a swinging lifting spring damping gravity billet turning machine, which can turn a high-temperature billet discharged from a heating furnace of a hot rolling production line of a bar material by 90 degrees before rolling, change the order of a conjugate grooved rolling biting surface of the billet between two rollers, improve the control precision of an inlet material type of a rolling mill, meet the requirements of an on-site rolling deformation process, remove overheated iron oxide on the surface of the billet, improve the appearance quality of the surface of a rolled material, improve the on-site production rhythm, reduce rolling current and reduce process faults.

In order to achieve the above object, the present invention provides the following technical solutions:

The swinging lifting type spring damping gravity billet tilting machine comprises a swinging power mechanism, a lifting power mechanism, a sliding spiral cam adjusting mechanism, a variable four-bar swinging mechanism, an adjustable tension sprocket lifting mechanism and a gravity type spring tilting mechanism, wherein the sliding spiral cam adjusting mechanism is connected with the variable four-bar swinging mechanism and is used for adjusting the horizontal coordinate and/or the vertical coordinate of a swinging rod seat in the variable four-bar swinging mechanism so as to linearly adjust the swinging angle of a vertical column in the variable four-bar swinging mechanism, the swinging power mechanism is connected with the variable four-bar swinging mechanism and is used for providing power for the variable four-bar swinging mechanism, the lifting power mechanism is respectively connected with the variable four-bar swinging mechanism and the adjustable tension sprocket lifting mechanism and is used for providing power for the variable tension sprocket lifting mechanism, the adjustable tension sprocket lifting mechanism is arranged on the vertical column and is connected with the gravity type spring tilting mechanism, and the adjustable tension sprocket lifting mechanism is used for linearly adjusting the direction of the vertical column, and the adjustable tension sprocket lifting mechanism is used for changing the direction of the gravity type spring tilting mechanism to make the lifting mechanism to reciprocate the gravity type billet tilting mechanism to realize the linear motion of the tilting mechanism.

The swinging lifting type spring damping gravity billet turnover machine comprises a swinging lifting type spring damping gravity billet turnover machine body, wherein a sliding spiral cam adjusting mechanism comprises a sliding spiral mechanism, a wedge type sliding cam mechanism and a push rod frame, the sliding spiral mechanism comprises a first speed reducing motor, a transverse adjusting nut and a transverse adjusting spiral rod, the output end of the first speed reducing motor is fixedly connected with one end of the transverse adjusting spiral rod, the transverse adjusting nut is in threaded connection with the transverse adjusting spiral rod, the wedge type sliding cam mechanism comprises a swinging frame, a longitudinal adjusting nut, a longitudinal adjusting spiral rod, a diagonal slideway and a push rod, the bottom of the swinging frame is hinged with the upper plane of the transverse adjusting nut, the longitudinal adjusting spiral rod is rotatably arranged on the inner side of the swinging frame, the longitudinal adjusting nut is in threaded connection with the longitudinal adjusting spiral rod, the bottom of the longitudinal adjusting spiral rod is hinged with the upper plane of the transverse adjusting nut, one end of the diagonal slideway is hinged with the upper plane of the transverse adjusting nut, the diagonal slideway is hinged with the top of the push rod, the diagonal slideway is fixedly arranged on the top of the push rod is fixedly arranged on the top of the push rod.

Further, in the swing lifting spring damping gravity steel billet turning machine, the sliding spiral cam adjusting mechanism further comprises an L-shaped slide rail and a locking bolt, wherein the bottom of the L-shaped slide rail is fixedly arranged, the bottom of the ejector rod frame is in sliding connection with the top of the L-shaped slide rail, the locking bolt is arranged between the bottom of the ejector rod frame and the top of the L-shaped slide rail, and the locking bolt is used for fixedly connecting the bottom of the ejector rod frame with the top of the L-shaped slide rail.

Further, in the swing lifting type spring damping gravity billet turning machine, the variable four-bar linkage swing mechanism further comprises a connecting rod, a swing rod, a base, a swing rod upper sliding seat, a swing rod lower sliding seat and a lifting arm, one end of the upright is hinged with the base, one end of the swing rod is hinged with one end of the swing rod seat, one end of the lifting arm is in adjustable sliding connection with one side of the upright, the other end of the lifting arm is hinged with one end of the connecting rod, one end of the swing rod upper sliding seat is in adjustable sliding connection with one side of the swing rod, the other end of the swing rod upper sliding seat is hinged with the other end of the connecting rod, one end of the swing rod lower sliding seat is in adjustable sliding connection with the other side of the swing rod, the other end of the swing rod lower sliding seat is hinged with the output end of the swing power mechanism, the tail end of the swing power mechanism is hinged with the base, and the tail end of the lifting power mechanism is hinged with the connecting rod.

Further, in the swing lifting spring damping gravity billet turnover machine, the connecting rod comprises a connecting rod sleeve, two connecting rod beams, a fastening bolt, a support, an adjusting rod and a fixing nut; the connecting rod sleeve is of a hollow box-shaped structure, and the other ends of the two connecting rod beams are symmetrically inserted from two ends of the connecting rod sleeve; the two sides of the connecting rod sleeve are respectively provided with two groups of threaded holes in mirror symmetry, the fastening bolts are screwed into the threaded holes and are in contact with the connecting rod beams to fixedly connect the connecting rod beams with the connecting rod sleeve, the other end of the lifting arm is hinged with one end of one connecting rod beam, the other end of the rocker arm upper sliding seat is hinged with one end of the other connecting rod beam, the support is fixedly arranged on the connecting rod beam, the fixing nuts are fixedly arranged on the connecting rod sleeve, one end of the adjusting rod is in rotary fit with the support, the other end of the adjusting rod is in fit with the fixing nuts, the tail end of the lifting power mechanism is hinged with the connecting rod sleeve, the variable four-connecting-rod swinging mechanism further comprises two sets of rocker arm pull rod mechanisms, each set of rocker arm pull rod mechanism comprises a rocker arm pull rod, two rocker arm earrings and a rocker arm, one end of each rocker arm is hinged with the rocker arm, the other end of the rocker arm upper sliding seat is hinged with one end of the rocker arm earring, one set of the rocker arm pull rod mechanism is in rotary fit with one end of the rocker arm sliding seat, the other rocker arm pull rod in the rocker arm pull rod mechanism is in synchronous with the rocker arm sliding seat is in rotary fit with the rocker arm pull rod, and the two ends of the rocker arm pull rod are respectively matched with the other ends of the two rocker arm earrings by adopting fine tooth external threads in the positive and negative directions.

Further, in the swing lifting type spring damping gravity billet turning machine, the variable four-bar linkage swing mechanism further comprises a lifting arm winding drum, a fixed pulley, a lifting arm winding drum support, a fixed pulley support, a second gear motor and a steel wire rope, wherein the fixed pulley is fixedly arranged at the top of one side of the upright post through the fixed pulley support, the lifting arm winding drum is fixedly arranged at the bottom of one side of the upright post through the lifting arm winding drum support, the output end of the second gear motor is fixedly connected with the lifting arm winding drum, the lifting arm is in sliding connection with one side of the upright post, one end of the steel wire rope is fixedly connected with the lifting arm, and the other end of the steel wire rope bypasses the fixed pulley and is fixedly connected with the lifting arm winding drum.

The adjustable tensioning chain wheel lifting mechanism comprises a tensioning chain wheel assembly, a sleeve roller chain and a lifting trolley, wherein the tensioning chain wheel assembly comprises a chain wheel, a chain wheel shaft and tensioning plates, the chain wheel is rotatably arranged at one ends of the tensioning plates through the chain wheel shaft, the other ends of the tensioning plates are fixedly arranged at the top ends of the stand columns, the lifting trolley comprises a trolley wheel shaft, a trolley pressing plate, a lifting plate and two telescopic beams, the telescopic beams are strip-shaped plate-shaped members, a groove slideway is arranged in the middle of the telescopic beams in the height direction and extends towards the front end face of the telescopic beams, the length direction of the groove slideway is consistent with the length direction of the telescopic beams, the lifting plate is fixedly arranged on the upper surfaces of the two telescopic beams, the two ends of the trolley pressing plate are fixedly arranged at the rear end faces of the two telescopic beams, the gravity spring tilting mechanism is fixedly arranged at the front end faces of the telescopic beams, the sliding guide shafts are arranged in the two ends of the wheel shafts, the two guide shafts are connected with the two ends of the roller chain, and the two guide shafts are fixedly connected with the other ends of the telescopic chains.

Further, in the swing lifting type spring damping gravity steel billet turnover machine, the lifting trolley further comprises an adjusting rod and a second deep groove ball bearing, a step blind hole is formed in the geometric symmetry center line of the trolley wheel shaft, the second deep groove ball bearing is arranged in the step blind hole, a fine tooth nut is arranged in the middle of the trolley pressing plate and is in rotary fit with the adjusting rod, and one end of the adjusting rod penetrates through the trolley pressing plate and is matched with the second deep groove ball bearing.

The gravity spring tipping mechanism comprises a cross beam, two groups of bearing rod assemblies, two groups of material supporting arms and two groups of rotary spring damping bodies, wherein the two groups of bearing rod assemblies are fixedly arranged at two ends of the cross beam, the cross beam is fixedly arranged at the front end face of a telescopic beam, the two groups of bearing rod assemblies are arranged in mirror symmetry with respect to the geometric symmetry center line of the lifting trolley, the material supporting arms comprise transverse parts, vertical parts and movable lug plates, the lower ends of the vertical parts are fixedly connected with the transverse parts and divide the transverse parts into a material supporting arm front section and a material supporting arm tail section, the length of the material supporting arm front section is larger than that of the material supporting arm tail section, the movable lug plates are arranged on the material supporting arm front section, one end of each bearing rod assembly is hinged with the upper end of the vertical part, the two groups of rotary spring damping bodies are respectively hinged with the outer side faces of the tail parts of the material supporting arms, the rotary spring seat bodies are respectively hinged with the outer side faces of the tail parts of the two groups of the material supporting arms, the rotary spring seat bodies, the guide spring seat bodies are respectively hinged with the tail parts of the guide spring seat bodies, the guide spring seat bodies and the tail parts of the guide spring seat bodies are hinged with the guide spring nuts, and the tail parts of the guide spring seat bodies are hinged with the guide spring nuts.

Further, in the swing lifting type spring damping gravity billet turning machine, the rotary spring damping body further comprises a base nut, the guide rod is a screw rod with a through long full-wire structure, the base nut is in threaded fit with the lower portion of the guide rod, the top of the damping spring is in pressing contact with the upper plane of the spring seat, and the bottom of the damping spring is fixedly mounted on the base nut.

Analysis shows that the embodiment of the invention discloses a swinging lifting spring damping gravity billet turnover machine, which has the following technical effects:

the swinging lifting spring damping gravity billet turnover machine can turn a high-temperature billet discharged from a heating furnace of a hot rolling production line of a bar material by 90 degrees before rolling, change the sequence of the bite surface of the billet in the conjugate pass rolling between two rollers, improve the control precision of the inlet material of a rolling mill, meet the requirements of the on-site rolling deformation process, remove the overheated ferric oxide on the surface of the billet, improve the appearance quality of the surface of the rolled material, improve the on-site production rhythm, reduce the rolling current and reduce the process faults. Meanwhile, the swing lifting type spring damping gravity steel billet turnover machine has the remarkable characteristics of simple structure, low cost, reliable work, quick response and strong adaptability, and is a novel steel billet turnover machine with wide application, high automation degree, convenient installation and strong universality.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. Wherein:

FIG. 1 is a schematic diagram of an embodiment of the present invention; FIG. 2 is an exploded view of a system architecture according to an embodiment of the present invention; FIG. 3 is a schematic diagram of the movement of a variable four-bar linkage swing mechanism in accordance with an embodiment of the present invention; FIG. 4 is a schematic diagram of the swing frame adjusting mechanism in an embodiment of the present invention, FIG. 5 is a schematic diagram of the swing frame adjusting mechanism in an embodiment of the present invention, FIG. 6 is a schematic diagram of the swing frame adjusting mechanism in an embodiment of the present invention, FIG. 7 is a schematic diagram of the swing power mechanism in an embodiment of the present invention, FIG. 8 is a schematic diagram of the swing frame in an embodiment of the present invention, FIG. 9 is a schematic diagram of the lift truck and the material supporting arm in an embodiment of the present invention, FIG. 10 is a schematic diagram of the swing frame in an embodiment of the present invention, FIG. 11 is a schematic diagram of the connecting rod in an embodiment of the present invention, FIG. 12 is a sectional view in the direction of A-A in FIG. 11, FIG. 13 is a schematic diagram of the structure in an embodiment of a vertical column in an embodiment of the present invention, FIG. 14 is a sectional view in the direction of A-A in FIG. 13, FIG. 15 is a sectional view in the direction of a-B in FIG. 13, FIG. 16 is a sectional view in the direction of a-C in a direction of FIG. 13, FIG. 17 is a schematic diagram of the lift truck and the material supporting arm in an embodiment of the present invention, FIG. 9 is a schematic diagram in a schematic diagram of the lift truck in an embodiment of the present invention, FIG. 10 is a schematic diagram in the lift truck in an embodiment of the present invention, FIG. 10 is a schematic diagram in the lift arm in a schematic diagram of an embodiment of a schematic diagram of a FIG. 10 is a schematic diagram in a schematic diagram of a schematic diagram of a Cross-sectional view along a-B-C direction, fig. 27 is a schematic structural view of a load-bearing bar assembly according to an embodiment of the present invention, fig. 28 is a schematic structural view of a stock supporting arm according to an embodiment of the present invention, fig. 29 is a schematic movement view of an embodiment of the present invention, fig. 30 is a schematic working view of an initial station according to an embodiment of the present invention, fig. 31 is a schematic working view of a load-lifting station according to an embodiment of the present invention, fig. 32 is a schematic working view of a load-lifting-tilting station according to an embodiment of the present invention, fig. 33 is a schematic working view of a fall-back gravity-tilting station according to an embodiment of the present invention, fig. 34 is a schematic working view of a returning-to-home position after a blank tilting is completed according to an embodiment of the present invention, fig. 35 is a schematic working view of a load-swinging station according to an embodiment of the present invention, and fig. 36 is a working view of a swinging-tilting-station according to an embodiment of the present invention.

Reference numerals illustrate:

1-swinging power mechanism, 11-swinging cylinder, 111-swinging cylinder earring, 1111-second pin, 12-first hinge support, 13-second hinge support, 14-first pin, 15-base, 2-lifting power mechanism, 21-lifting cylinder, 22-slide, 23-T-shaped bolt, 3-sliding spiral cam adjusting mechanism, 31-first gear motor, 32-bearing seat, 321-first sliding bearing, 33-transverse adjusting spiral rod, 34-transverse adjusting nut, 341-third pin, 342-fourth pin, 35-swing frame, 351-swing frame gland, 352-swing frame beam, 353-hand wheel, 354-first deep groove ball bearing, 36-longitudinal adjusting nut, 361-fifth pin, 37-longitudinal adjustment screw, 38-swing hinge ball, 39-ejector pin, 391-sliding hinge ball, 392-inclined slide, 393-ejector pin holder, 3931-locking bolt, 394-L slide, 4-variable four-bar swing mechanism, 41-swing link, 411-first shaft sleeve, 412-swing link seat, 413-sixth pin, 414-swing link upper slide, 4141-seventh pin, 4142-second shaft sleeve, 415-swing link lower slide, 4151-slide bolt, 42-rocker arm, 421-eighth pin, 422-rocker arm earring, 423-rocker arm pull rod, 424-ninth pin, 43-connecting rod, 431-connecting rod beam, 432-support, 433-adjustment lever, 434-connecting rod sleeve, 4341-fastening bolt, 435-third shaft sleeve, 4351-tenth pin shaft, 44-upright post, 441-eleventh pin shaft, 442-third hinge seat, 45-lifting arm, 452-wire rope, 453-set screw, 454-second gear motor, 455-lifting arm reel, 456-lifting arm reel support, 457-fixed pulley support, 458-fixed pulley, 5-adjustable tension sprocket lifting mechanism, 51-tension sprocket assembly, 511-sprocket, 512-sprocket shaft, 513-tension plate, 514-fixing bolt, 515-tension screw pair, 516-mounting channel steel, 52-sleeve roller chain, 53-lifting trolley, 531-small wheel shaft, 532-second deep groove ball bearing, 533-trolley platen, 534-adjusting rod, 535-balancing weight, 536-third deep groove ball bearing, 5361-bearing block, 537-lifting plate, 538-telescopic beam, 6-gravity spring tilting mechanism, 61-crossbeam, 62-bearing rod assembly, 621-bearing rod, 622-handle, 623-upper gland, 624-fourth deep groove ball bearing, 625-sleeve, 626-bearing nut, 628-lower gland, 63-material supporting arm, 631-thirteenth pin, 633-fourth shaft, 634-movable lug, 635-lead screw, 636-fifth shaft, 637-fourteenth pin, 64-rotary spring damper, 641-lifting nut, 642-spring seat, 643-damping spring, 644-guide rod, 645-shim.

Detailed Description

The invention will be described in detail below with reference to the drawings in connection with embodiments. The examples are provided by way of explanation of the invention and not limitation of the invention. Indeed, it will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For example, features illustrated or described as part of one embodiment can be used on another embodiment to yield still a further embodiment. Accordingly, it is intended that the present invention encompass such modifications and variations as fall within the scope of the appended claims and their equivalents.

In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. refer to the orientation or positional relationship based on that shown in the drawings, merely for convenience of description of the present invention and do not require that the present invention must be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. The terms "connected," "connected," and "disposed" as used herein are to be construed broadly, and may be, for example, fixedly connected or detachably connected, directly connected or indirectly connected through intermediate members, or may be a wired electrical connection, a radio connection, or a wireless communication signal connection, as will be understood by those skilled in the art, depending on the particular meaning of the terms.

One or more examples of the invention are illustrated in the accompanying drawings. The detailed description uses numerical and letter designations to refer to features in the drawings. Like or similar designations in the drawings and description have been used to refer to like or similar parts of the invention. As used herein, the terms "first," "second," "third," and "fourth," etc. are used interchangeably to distinguish one component from another and are not intended to represent the location or importance of the individual components.

As shown in fig. 1 to 36, according to an embodiment of the present invention, there is provided a swing lifting type spring damping gravity billet tilting machine, comprising a swing power mechanism 1, a lifting power mechanism 2, a sliding spiral cam adjusting mechanism 3, a variable four-bar linkage swing mechanism 4, an adjustable tension sprocket lifting mechanism 5 and a gravity type spring tilting mechanism 6, wherein the sliding spiral cam adjusting mechanism 3 is connected with the variable four-bar linkage swing mechanism 4, the sliding spiral cam adjusting mechanism 3 is used for adjusting the horizontal and/or vertical coordinates of a swing rod seat 412 in the variable four-bar linkage swing mechanism 4 so as to linearly adjust the swing angle of a column 44 in the variable four-bar linkage swing mechanism 4, the swing power mechanism 1 is connected with the variable four-bar linkage swing mechanism 4, the swing power mechanism 1 is used for providing power for the variable four-bar linkage swing mechanism 4, the lifting power mechanism 2 is respectively connected with the variable four-bar linkage swing mechanism 4 and the adjustable tension sprocket lifting mechanism 5, the adjustable tension sprocket lifting mechanism 5 is arranged on the column 44, the adjustable gravity type tension sprocket lifting mechanism 5 is connected with the right-bar linkage spring tilting mechanism 6 so as to realize the linear tilting mechanism 6, and the billet tilting mechanism 6 is placed on the end of the tilting mechanism to realize the linear tilting of the tilting mechanism.

In the above embodiment, the swing power mechanism 1 and the lifting power mechanism 2 are power mechanisms of the present turnover machine, and are used for providing power sources for movement of each mechanism of the turnover machine, the swing power mechanism 1 is arranged at the most upstream of the present turnover machine, and is used for providing power for the variable four-bar swinging mechanism 4, and the lifting power mechanism 2 is arranged at the downstream of the variable four-bar swinging mechanism 4, and is used for providing power for the adjustable tension sprocket lifting mechanism 5. The sliding spiral cam adjusting mechanism 3 is arranged at the bottom of the variable four-bar linkage oscillating mechanism 4 and is mainly formed by combining the sliding spiral mechanism and the wedge sliding cam mechanism, and mainly provides on-line real-time abscissa and ordinate adjustment for the oscillating bar seat 412 in the variable four-bar linkage oscillating mechanism 4, so that the motion track of the oscillating bar 41 is regularly changed, synchronous linear fine adjustment of the oscillating angle of the upright post 44 of the internal core component in the variable four-bar linkage oscillating mechanism 4 is realized, and the field differentiation process requirement is met. The variable four-bar swinging mechanism 4 is arranged at the downstream of the power unit of the lower-end swinging mechanism and is used for converting the reciprocating linear motion of the lower-end swinging power mechanism 1 into periodic rotary motion and then transmitting the periodic rotary motion to the upright post 44 to enable the upright post 44 to swing back and forth around a fixed hinge point, and the regular change of the motion track of the variable four-bar swinging mechanism is realized through the local adjustment of an inner adjustable component and the linear fine adjustment of the outer sliding spiral cam adjusting mechanism 3, so that the process requirement of synchronous linear adjustment of the inclination swing angle of the upright post 44 of an inner core component is met; the adjustable tension chain wheel lifting mechanism 5 is arranged at the upstream of the gravity type spring tilting mechanism 6 and is used for changing the acting direction of the oblique pulling force output by the upper end lifting power mechanism 2, transmitting the oblique pulling force to the lifting trolley 53, driving the lifting trolley 53 to reciprocate freely and linearly up and down along the slideway of the upright post 44, the gravity type spring tilting mechanism 6 is arranged at the most downstream of the whole system and is an actuating mechanism of a system core, the lifting trolley 53 slides up and down to enable the material supporting arm 63 to reciprocate linearly up and down and realize the elastic damping swing of the self-body downwards at a fixed angle, and is matched with the left and right swing of the upright post 44, so that a billet is turned to a critical balance tilting angle, the 90-degree turning of the moment of the impact of the hot billet on the ground is realized by depending on the gravity impact kinetic energy of the billet in the rapid linear descending process of the lifting arm 63, and the scale on the surface of the billet is removed simultaneously, and the regular swing of the variable four-bar swinging mechanism 4 can be matched, wherein the two turning modes are as follows, Namely a lifting impact type and a lifting swing type, and can be selected according to the actual working conditions on site. As shown in fig. 29 to 36, the lifting impact type means that the lifting motion of the lifting trolley 53 in the upright post 44 makes the material supporting arm 63 linearly move upwards and simultaneously realize the elastic damping swing of a downward fixed angle, so that the billet is overturned to a critical balanced tipping angle, the posture balance of the hot billet is destroyed by the gravity impact kinetic energy of the billet in the rapid linear descending process of the material supporting arm, the 90-degree overturning at the moment of impact contact is realized, and the oxide scale on the surface of the billet is removed, and the billet is subjected to 5 steps, namely ① initial stations, ② No-load lifting station, ③ heavy-load lifting tipping station, ④ falling gravity overturning station, ⑤ The lifting swing type billet overturning device is characterized in that the lifting movement of the lifting trolley 53 in the upright post 44 enables the material supporting arm 63 to realize the elastic damping swing of a downward fixed angle while moving upwards in a straight line, so that the billet overturns to a critical balanced overturning angle, the upright post 44 continuously drives the material supporting arm 63 to continue tilting and overturning under the directional swing of the upstream variable four-bar swinging mechanism 4, so that the billet does complex parabolic track movement until the billet touches the roller plane, the moment gravity fall overturning is realized, the first 2 steps and the last 1 step are completely the same as the lifting impact type, but the middle 2 steps are completely different, the inclination angle of the lifting impact type billet in the swinging arm is smaller than that of the lifting swing type billet, the former enables the billet to be in impact contact with the roller working surface by means of vertical up-down movement, the latter enables the billet to be in contact with the roller way by means of further tilting object movement of the swinging arm, the billet has horizontal movement and vertical downward movement, and the synthetic movement track is complex parabolic. The lifting swing type concrete process comprises the following 6 steps of ① initial stations, ② no-load lifting stations, ③ heavy-load lifting tipping stations, ④ heavy-load swing stations, ⑤ And (5) returning to the original position after the swing overturning station and ⑥ blank overturning are completed. the turnover machine realizes fixed-angle inclination in the rising process of the hot steel billet in the material supporting arm 63 by means of damping and buffering of the rotary spring damping body, so that the hot steel billet reaches a critical turnover angle, rising potential energy is converted into descending impact kinetic energy in the falling process of the lifting trolley 53, the moment of the steel billet in the critical turnover state contacting the surface of the roller way breaks the gesture balance by means of the action of moment impact load, gravity impact turnover is realized, the surface overheat iron scales are removed, and the purpose of 90-degree automatic turnover of the steel billet is realized efficiently and conveniently.

As shown in fig. 1 and 19, the swing power mechanism 1 and the lifting power mechanism 2 are of an up-down stacked double-unit structure, and are divided into an upper group and a lower group in space layout, wherein the lifting power mechanism 2 is arranged above, and the swing power mechanism 1 is arranged below, so that the swing power mechanism has the remarkable advantages of compact layout space and convenience in field installation and maintenance. The two groups of independent power units are independently controlled by double cylinders and double air paths, are respectively controlled by two sets of independent pneumatic electromagnetic reversing valves, flow regulating valves, pressure reducing valves and a remote electric control system PLC of an operating platform on site, and are assisted by a plurality of sets of electromagnetic sensors arranged on site, so that the 2 groups of cylinders of the system respectively independently move or are combined according to certain logic programming to sequentially and cooperatively act, and the two groups of cylinders can synchronously respond, can delay and sequentially act and cooperatively complete the action decomposition process requirement of the process of turning the complex movement track of the blank.

Meanwhile, as shown in fig. 1 and 19, the swing cylinder 11 in the swing power mechanism 1 and the tail of the lifting cylinder 21 in the lifting power mechanism 2 adopt the same convenient rapid disassembly and assembly structural design scheme, and the tail of the cylinder barrel is respectively connected with the first hinged support 12 through bolts, but the external components of the hinge pair matched with the two are obviously different. The swing cylinder adopts a bolt connection or welding fixation mode to enable the second hinging seat 13 to be spatially fixed with the base 15, the first hinging seat 12 and the second hinging seat 13 form a hinging pair which is entirely spatially fixed through the cooperation of the first pin shaft 14 and the centripetal joint bearing of the intermediate component, the movement freedom degree in the horizontal plane of the swing cylinder 11 and the longitudinal 2 directions is completely limited, only the spatial rotation freedom degree is reserved, the Y-shaped earring at the head part of the piston rod is hinged with the swing rod 41 through the second pin shaft 1111 to form a power unit of a lower swing mechanism, the swing rod 41 is driven to swing left and right around the swing rod seat 412, the first hinging seat 12 matched with the lifting cylinder 21 forms a hinging pair which can be debugged and longitudinally slides through the first pin shaft 14 and the centripetal joint bearing and the sliding seat 22, the hinging pair is integrally arranged on the upper plane of the connecting rod sleeve 434 to form a power source of the upper lifting mechanism, and the Y-shaped earring at the head part of the piston rod is hinged with the inner chain link of the sleeve roller chain 52 to transmit the output tension of the lifting cylinder 21 so as to meet the design requirement of accurate fine adjustment of the meshing wrap angle of the field cylinder and the chain 511. An elliptical chute is designed on the upper plane of a connecting rod sleeve 434 matched with the sliding seat 22, a through-length T-shaped groove is milled on the lower bottom surface, the sliding seat 22 can longitudinally slide in a certain range on the upper plane of the connecting rod sleeve 434, the plane abscissa position of the lifting cylinder 21 is adjusted, and after the position is adjusted in place, the lifting cylinder is finally connected and pressed through 2 groups of T-shaped bolts 23. The swinging cylinder 11 and the lifting cylinder 21 in the power mechanism are respectively controlled by two independent pneumatic electromagnetic reversing valves on site, the two cylinders can respectively and independently act, and the automatic on-site coordination sequence action can be realized according to a certain logic sequence after the optimization of an electric control system, and the response time and the speed of the action rhythm are realized by the logic programming of an electric PLC on a control panel of a main operation console. The pneumatic control loop adopts a pressure reducing valve and a throttle valve to control the pressure and the flow of the pneumatic system and regulate the running speed of the pneumatic system, so that the descending speed of the lifting trolley 53 is changed, the instant gravity impact during blank overturning is slowed down, and sudden impact fatigue fracture on the working surface of the roller way is prevented. Meanwhile, a buffer damping spring can be additionally arranged on the lower bottom surface of the upright post 44, and through the instant collision contact between the buffer damping spring and the telescopic beam 538, the descending impact kinetic energy of the lifting trolley 53 is absorbed, so that the gravity overload impact is relieved, and the service life of equipment is prolonged. The buffer spring can be used for selecting the cylindrical helical compression spring or the disc spring according to the actual requirements of the site, the disc spring is preferably selected, and the rigidity and the load characteristic curve of the combined spring are changed through different combination modes (superposition or involution) and quantity selection of the disc springs, so that the actual working condition requirements of the site are met.

In addition, the electric control system of the turnover machine adopts PLC auxiliary control, a light-sensitive proximity switch can be added at a proper position of a billet conveying roller way, when a discharging billet is conveyed to a position close to a steel turnover area, a thermal state light-sensitive signal is captured by an inductor and is transmitted to a remote main control box through a data line, a direct-current digital electric signal is output after the PLC logic programming of an internal core component of the inductor, so that an on-site pneumatic electromagnetic reversing valve sequentially performs electric operation, sequential or synchronous logic movements of two cylinders are respectively controlled, 90-degree turnover in the hot billet lifting and falling process on the roller way is realized, the rolling biting surface of the billet is changed, the on-site rolling process requirement is met, the overheat oxidized iron sheet on the surface layer of the billet is removed, and the surface quality of a rolled product is improved. The main control box of the tilting machine can realize unmanned remote automatic control of the tilting machine through two-way interlocking and logic operation of a PLC (programmable logic controller) of a transmission roller way in front of the tilting machine, and can also realize manual remote control of an operation desk by manually switching a change-over switch of the operation desk. The lifting cylinder 21 and the swinging cylinder 11 are preferably SC series cylinders with magnetic rings on inner pistons, when the swinging cylinder 11 acts to cause the upright post 44 to swing to a certain angle or the lifting cylinder 21 acts to cause the lifting trolley 53 to rise to a certain height, electromagnetic sensors arranged on external pull rods of the two cylinders receive magnetic signals of the magnetic rings on the inner pistons of the cylinders and synchronously convert the magnetic signals into direct-current digital electric signals, and the direct-current digital electric signals are transmitted to electromagnetic reversing valves of the two cylinders after being programmed and converted by a PLC (programmable logic controller), so that the two cylinders stop acting instantaneously or synchronously complete reverse movement, thereby completing the action flow of 90-degree turning of billets. Therefore, the telescopic limit positions of the piston rods of the two cylinders can be controlled by adjusting the positions of the electromagnetic sensors on the cylinder pull rods, and full-automatic control of the blank overturning process is realized by means of logic programming of the PLC. If a common cylinder is selected, 2 sets of electromagnetic induction switches are additionally arranged at a proper position of the stand column 44 or the piston stroke of the cylinder to realize the automatic control and positioning actions.

Preferably, as shown in fig. 1, 4 and 7 to 9, in one embodiment of the present invention, the sliding spiral cam adjusting mechanism 3 adopts a unit combination design scheme of embedding a stacked wedge type sliding cam mechanism above the sliding spiral mechanism, the transverse adjusting nut 34, the transverse adjusting spiral rod 33 and other accessories form a sliding spiral mechanism together, and are arranged below the sliding spiral cam adjusting mechanism 3, and the swinging frame 35, the inclined slideway 392, the ejector rod 39 and other related accessories form a wedge type sliding cam mechanism which is stacked above the adjusting mechanism. The sliding screw mechanism and the wedge type sliding cam mechanism cooperate with each other to adjust the ordinate of the swing rod seat 412. The slide screw mechanism and the wedge type slide cam mechanism are symmetrically arranged below the swing link 41 and integrally mounted on the base 15. The first gear motor 31 is directly fixed on the transmission side bearing seat 32, the transmission side and non-transmission side bearing seats 32 are of identical structural design, and are jointly fixed on the base 15, so that the space layout and the on-site disassembly are facilitated, the radial support and sliding friction reduction of the two groups of first sliding bearings 321 are utilized, the circumferential positive and negative rotation of the transverse adjusting screw rod 33 is driven, the transverse adjusting screw rod 33 is driven to rotate in a clockwise and anticlockwise axial straight line transverse movement, the inclined slideway 392 fixed above the transverse adjusting screw rod 34 is driven to synchronously slide in an axial and straight line manner, the ejector rod 39 is driven to vertically and linearly move, the longitudinal coordinate of a fixed hinge chain of the swing rod 41 is changed, and finally the inclination angle of the upright post 44 is adjusted in real time.

Preferably, as shown in fig. 7 to 9, in one embodiment of the present invention, an L-shaped slide rail 394 is welded and fixed above the bearing seat 32 disposed on the non-transmission side, the bottom of the ejector rod frame 393 is designed to be a concave structure, and is integrally coated on the cantilever rail of the L-shaped slide rail 394, and lubricating grease is smeared on the mating surfaces of the two, so that the transverse positioning parameters of the ejector rod frame 393 can be manually adjusted, and finally, the ejector rod frame is fixed by a locking bolt 3931, thereby changing the abscissa of the fixed articulated chain of the swing rod 41. It can be seen that the present invention provides two regulation schemes, both of which can achieve the purpose of adjusting the inclination angle of the upright post 44, the ordinate of the swing rod 41 can be automatically regulated in real time by means of the intermittent forward and reverse rotation of the first gear motor 31 through the electromagnetic induction switch arranged on site, and the abscissa thereof can be automatically regulated in real time by manually intervening to adjust the position of the ejector rod rack 393 on the L-shaped slide way 394, or the L-shaped slide way 394 and the bottom of the ejector rod rack 393 are designed into a sliding spiral pair structure and are provided with the gear motor and the corresponding electromagnetic induction switch, so that the on-line automatic and real-time regulation of the abscissa of the fixed hinge chain of the swing rod 41 can be achieved, and in particular, which regulation scheme can be selected according to the actual working condition on site.

Preferably, as shown in fig. 4 and fig. 7 to fig. 9, in one embodiment of the present invention, the transverse adjusting nut 34 is of an integral cuboid structure, and the sliding screw pair is formed by matching the through-long thin-tooth internal thread profile turned on the end surface thereof with the transverse adjusting screw rod 33. Two groups of fixed hinging pairs are designed on the upper plane of the transverse adjusting nut 34, one group is used for hinging the inclined slide 392, and the other group is used for hinging the swing frame 35 and the swing hinging ball head 38. The swing frame 35 is internally provided with a longitudinal adjustment screw 37 and is integrally connected with the swing frame 35 by a first deep groove ball bearing 354 fixed in a swing frame gland 351 to form a swingable rigid integral member. The longitudinal adjusting screw rod 37 is made of 20Cr alloy steel, the tail part of the longitudinal adjusting screw rod is designed to be in cladding and hinging with the cambered surface groove of the swing hinging ball head 38, the 360-degree omnibearing rotation freedom degree is realized, wherein the central circular arc of the cambered surface bulge is a semicircular arc, the swing hinging ball head 38 matched with the cambered surface bulge is made of tin phosphor bronze ZCuSn10P1, the longitudinal adjusting screw rod has good wear-resistant and antifriction performances, not only plays the radial and axial supporting roles of the thrust sliding bearing, but also provides an additional virtual constraint for the longitudinal adjusting screw rod 37, improves the stress condition of the longitudinal adjusting screw rod, prevents local unbalanced load deformation, and can synchronously swing left and right along with the swing frame 35 and the longitudinal adjusting screw rod 37 to form a group of swinging three-in-one component.

Preferably, as shown in fig. 7 to 9, in one embodiment of the present invention, the longitudinal adjustment nut 36 in the swing frame 35 is a 60 ° fine triangle internal thread having a large equivalent friction coefficient and good tooth self-locking property, and is engaged with the longitudinal adjustment screw 37 to be movable up and down along the axis thereof. The side of the longitudinal adjustment nut 36 is designed with a set of fixed hinge pairs hinged to the inclined slide 392. When the manual hand-operated hand wheel 353 rotates, the longitudinal adjustment screw rod 37 rotates synchronously and circumferentially, so that the triple coaxial composite hinge member formed by the swing hinge ball head 38, the longitudinal adjustment screw rod 37 and the swing frame 35 swings synchronously and slightly left and right around the third pin shaft 341 fixed on the transverse adjustment nut 34, and meanwhile, the longitudinal adjustment nut 36 is driven to slide up and down along the axis of the longitudinal adjustment screw rod 37, so that the inclined slide 392 hinged with the longitudinal adjustment nut 36 swings left and right around the fourth pin shaft 342 of the fixed hinge point on the transverse adjustment nut 34, finally, the inclined angle between the inclined slide 392 and the horizontal plane is changed, and the ejector rod 39 is pushed to move linearly up and down.

Preferably, as shown in fig. 7 to 9, in one embodiment of the present invention, the upper surface of the inclined ramp 392 is milled with a ramp having a groove structure, and the sliding hinge bulb 391 is embedded in the groove ramp and can slide linearly along the groove thereof. In order to reduce friction retardation, the sliding hinge ball 391 is made of tin-zinc-lead bronze material, and extreme pressure lithium-based lubricating grease is smeared in the groove of the inclined slideway 392. The sliding hinge ball 391 is provided with a spherical groove and is wrapped and hinged with the ball boss 360 degrees at the bottom of the ejector rod 39, and when the sliding hinge ball 391 slides along the inclined slideway 392 in an inclined way, the ejector rod 39 is pushed to vertically lift and fall under the constraint of the transverse displacement of the ejector rod frame 393. Preferably, the ejector rod frame 393 is an integral welding plug-in component, a sleeve is designed at the top, a sliding bearing made of bronze is inlaid on the inner side wall of the sleeve, lubricating grease is smeared on the sliding bearing to reduce friction, the sliding bearing is matched with the ejector rod 39 in a moving way, and the sliding freedom degree of the sliding bearing is restrained in the transverse left-right direction. The push rod 39 is a three-in-one assembled structure, the bottom of the push rod 39 is screwed with a ball head bulge to be matched with the sliding hinged ball head 391, the top of the push rod 39 is screwed with a round pressure plate to be matched with a T-shaped groove at the bottom of the swing rod seat 412, and the push rod 39 and the swing rod seat 412 are connected into a rigid integral component by welding and fixing on site. To ensure the accuracy and convenience of the on-site installation and positioning, the lower bottom surface of the swing rod seat 412 is provided with a T-shaped groove which is convenient to be matched with the ejector rod 39.

As shown in fig. 4, the upper half of the swing frame 35, the longitudinal adjustment screw rod 37, the longitudinal adjustment nut 36, the swing hinge ball 38, the inclined slide 392 and the transverse adjustment nut 34 of the sliding spiral cam adjustment mechanism 3 are combined together to form a typical planar link guide mechanism in mechanical design, the upper plane of the transverse adjustment nut 34 is the planar link guide mechanism carrier platform, the upper surface is provided with a third pin 341, so that the swing frame 35, the longitudinal adjustment screw rod 37 and the swing hinge ball 38 are coaxially and compositely hinged, and form a planar II-stage rod group with a spatial degree of freedom of 0 together after being screwed with the longitudinal adjustment nut 36, and are rotatably hinged with the inclined slide 392 serving as a I-stage mechanism through a fifth pin 361, the inclined slide 392 is hinged with the upper plane of the transverse adjustment nut 34 through a fourth pin 342 to form a planar link swing mechanism with a spatial degree of freedom of 1 together, and the inclined slide 392 is a non-circular wedge cam.

Preferably, as shown in fig. 1 to 5 and fig. 10 to 16, in one embodiment of the present invention, the variable four-bar swinging mechanism 4 is an intermediate process component of the system, and is a plane four-bar mechanism which is more typical in mechanical design, and is mainly formed by combining a column 44, a third hinge seat 442, a connecting rod 43, a swinging rod 41, a swinging rod seat 412 and the like, wherein the third hinge seat 442 is fixed on the base 15 and is hinged with the column 44 in a rotating manner, the abscissa and the ordinate of the hinge pair are both fixed in a two-way manner, and are not adjustable, and a group of revolute pairs are respectively designed at two ends of the connecting rod 43 and are respectively hinged with the column 44 and the swinging rod 41 in a rotating manner. In the present invention, the swing rod seat 412 hinged with the swing rod 41 can change its own horizontal coordinate and vertical coordinate in real time under the drive of the sliding spiral cam adjusting mechanism 3, thereby changing the geometric motion track of the swing rod 41 and finally affecting the vertical inclination angle of the upright post 44 to meet the design process requirement of the expected angle in the process of turning steel. The connecting rod 43 adopts a combined type sleeved split structure design scheme, and the main body structure of the connecting rod 43 is formed by splicing 2 groups of connecting rod beams 431 which are completely consistent in structure and symmetrically arranged in a manner that the connecting rod beams are respectively inserted into the connecting rod sleeve 434 from two ends. The connecting rod sleeve 434 is welded into a hollow box structure by using a steel plate, the upper plane of the connecting rod sleeve is milled with a strip elliptical hole, the connecting rod sleeve is fixedly connected with the sliding seat 22 of the lifting cylinder 21 through the T-shaped bolt 23, and a T-shaped groove is milled on the lower plane, so that the square head of the T-shaped bolt 23 is convenient to slide and fix. The lifting cylinder 21 can slide back and forth on the upper plane of the connecting rod sleeve 434, so that the abscissa thereof is slightly adjusted to meet the process requirements of accurate fine adjustment of the on-site cylinder stroke and the sprocket meshing wrap angle. The two side steel plates of the connecting rod sleeve 434 are respectively provided with 2 groups of internal threads of M20 in mirror symmetry, and the connecting rod beam 431 and the connecting rod sleeve 434 are fixedly connected into a three-in-one integral rigid member by the clamping force of 2 groups of fastening bolts 4341 which are screwed with the internal threads. The third shaft sleeve 435 made of tin-zinc-lead bronze is embedded and arranged on the connecting rod beam 431 and is respectively movably hinged with the lifting arm 45 and the upper sliding seat 414 of the swinging rod, and the upper sliding seat 414 of the swinging rod and the lifting arm 45 are respectively adjustable sliding revolute pairs on the swinging rod 41 and the upright post 44.

In order to facilitate adjusting the matched telescopic length of the 2 sets of connecting rod beams 431 in the connecting rod sleeve 434, changing the geometric parameters of the longitudinal length of the connecting rod 43, thereby adjusting the motion track of the connecting rod 43 and finally influencing the vertical inclination angle of the upright post 44, preferably, as shown in fig. 1, 11 and 12, in one embodiment of the invention, 2 sets of adjusting mechanisms are specially added on the connecting rod 43, the support 432 adopts a split-type vertical split structural design scheme, the lower half part is fixedly welded on the connecting rod beam 431, the support 432 and the adjusting rod 433 are rotationally matched through a convex-concave table in the interior and bear axial pushing/pulling force, the axial section of one end of the adjusting rod 433 is concave, namely, a groove is arranged at a certain distance from the end face of one end of the adjusting rod 433, and correspondingly, a bulge, namely, a convex-concave table is formed in a through hole formed between the upper half part and the lower half part of the support 432, and the groove of one end of the adjusting rod 433 are matched to realize the rotational matching of one end of the adjusting rod 433 and the support 432. The other end of the adjusting rod 433 is screwed with a nut of the M36 fixed on the connecting rod sleeve 434, and the connecting rod beam 431 can conveniently and rapidly freely stretch out and draw back in the connecting rod sleeve 434 by the axial pushing/pulling force transmitted by the rotation of the adjusting rod 433, and the connecting rod beam 431 is locked and positioned by the fastening bolt 4341 after reaching the expected adjusting position. The 2 sets of adjusting rods 433 are driven manually, can respectively and independently act, can be adjusted simultaneously in a matching way, and can be flexibly operated according to the actual requirements of the site. Therefore, the scheme of the telescopic split plug-in connecting rod is one of the outstanding inventions in the invention.

Preferably, as shown in fig. 1 and 10, in one embodiment of the present invention, the swing link assembly is an adjustable three-pair member with a T-shaped slide rail symmetrically disposed up and down, and is mainly formed by combining a swing link 41, a swing link upper slide 414, a swing link lower slide 415, and an upper and lower set of swing link tie rods 423, which are respectively independent, and each of the swing link tie rods includes 2 sets of revolute pairs for manually sliding and adjusting position coordinates and 1 set of revolute pairs for automatically linearly mechanically adjusting coordinate parameters. The swing rod 41 is an integral plate type special-shaped component with a symmetrical structure, is formed by adopting 55mm thick steel plate wire cutting, is embedded with a first shaft sleeve 411 made of bronze material at the bottom end and fixedly hinged with a swing rod seat 412, and can change the horizontal plane abscissa of the swing rod 41 and adjust the motion trail of the swing rod by the action of a sliding spiral cam adjusting mechanism 3 arranged below the swing rod. The bottom of the swing rod upper sliding seat 414 is provided with a T-shaped groove which can be sleeved on the swing rod 41 and can slide reciprocally and freely on a T-shaped slide way of the swing rod 41, the top of the swing rod upper sliding seat 414 is provided with 2 groups of rotating hinge pairs, one group of rotating hinge pairs is used for hinging the connecting rod 43 and transmitting the power of the swing rod 41, the other group of rotating hinge arm earrings 422 are connected with the swing arm 42 through a swing arm pull rod 423 which is screwed with the rotating hinge arm earrings to form a complete four-connecting-rod adjusting mechanism, and the four-connecting-rod adjusting mechanism is used for adjusting the spatial position coordinate parameters of the tail end hinge pair of the connecting rod 43 and changing the movement track of the connecting rod 43. One end of the rocker arm 42 is hinged with the rocker arm 41, the other end is hinged with the rocker arm earrings 422, and an extension handle is designed at the top, which is equivalent to a labor-saving lever, so that the manual operation is facilitated. The rocker arm pull rod 423 adopts a synchronous rotating double-spiral structure design, and both ends of the rocker arm pull rod 423 respectively adopt fine external threads in the positive and negative rotation directions to be respectively in rotary fit with 2 sets of rocker arm earrings 422 hinged on the rocker arm 42 and the rocker arm upper slide seat 414, when the rocker arm pull rod 423 is rotated in the positive/negative directions, the plane straight line distance between the center points of the 2 hinged revolute pairs on the rocker arm 42 and the rocker arm upper slide seat 414 can be correspondingly prolonged or shortened, so that the problem that the adjustment sliding travel distance of the rocker arm upper slide seat 414 is short due to the limitation of the swing inclination angle of the rocker arm 42 is solved, and the adjustment range is enlarged. The swing rod lower sliding seat 415 adopts the completely same swing rod pull rod assembly structure to manually adjust the space position coordinates of the swing cylinder earrings 111, is used for compensating the stroke of the swing cylinder 11, and meets the process design requirement of the swing inclination angle of the swing rod 41. In practical application, the first gear motor 31 and the swinging cylinder 11 can be independently adjusted, and can also be matched to act according to a certain rule to realize online real-time fine adjustment by means of the logic programming of an electric control system.

As shown in fig. 1,3 and 5, two sets of longitudinally slidable and adjustable revolute pairs, namely a second pin shaft 1111 and a seventh pin shaft 4141, are designed on the body of the swing rod 41, and are respectively arranged on the lower swing rod slide seat 415 and the upper swing rod slide seat 414, and the positions of the two sets of revolute pairs are finely adjusted through a swing rod rocker pull rod mechanism, so that the horizontal coordinates and the vertical coordinates of the two sets of revolute pairs are changed, the track parameters of the connecting rod 43 and the swing cylinder 11 are changed, and the overall movement track of the whole variable four-connecting rod swing mechanism 4 is affected. Structurally, the upper and lower rocker arm pull rod mechanisms matched with the upper rocker arm slide seat 414 and the lower rocker arm slide seat 415 are designed in the same structure, and the only difference is that the length of the rocker arm pull rod 423 is slightly different. The rocker arm pull rod mechanism also adopts a plane multi-rod mechanism design scheme of combining the I-stage mechanism and the II-stage rod group in the mechanical principle design science, the rocker arm 42 is hinged with the rocker arm 41 body through an eighth pin shaft 421 and can swing left and right to form the I-stage mechanism, the rocker arm ear 422 and the rocker arm pull rod combination body form the II-stage rod group comprising two movable components (the rocker arm upper slide seat 414 or the rocker arm lower slide seat 415 and the rocker arm ear 422 and the rocker arm pull rod combination body) through a ninth pin shaft 424 (the inner pair of the II-stage rod group) and the rocker arm upper slide seat 414 or the rocker arm lower slide seat 415, and 3 low pairs (2 rotation low pairs formed by the eighth pin shaft 421 and the ninth pin shaft 424 +1 movement low pair formed by the rocker arm 41 and the rocker arm upper slide seat 414 or the rocker arm lower slide seat 415). The level I mechanism and the level II lever group are connected through the eighth pin 421 to form a rocker arm pull rod mechanism, the design of the internal degree of freedom is calculated as f=3n-2pl-ph= 3*3-2×4-0=1, the degree of freedom requirement of the plane connecting rod motion design is met, and the rocker upper slide seat 414 or the rocker lower slide seat 415 can regularly slide linearly under the condition that the rocker arm 42 swings, so that the plane position parameter coordinates of the seventh pin 4141 and the second pin 1111 are changed.

Preferably, as shown in fig. 1 and fig. 13 to fig. 17, in one embodiment of the present invention, the upright 44 is a core component in the whole variable four-bar swinging mechanism 4, and the upright 44 is a steel rivet welding piece with a monolithic frame structure, and the main function is that, in the case that the material supporting arm 63 is stressed to bear the self-weight inclination of the steel billet to a certain angle, the material supporting arm 63 drives the steel billet to continuously incline through the swinging of the upright 44, so that the steel billet inclination angle is superposed to the gravity critical tipping angle. The upright post 44 body is formed by welding common hot-rolled channel steel, the bottom is provided with 1 group of rotary hinge pairs, the rotary hinge pairs can swing left and right around a third hinge seat 442 fixed on the base 15, and the size of the inclination angle of the rotary hinge pairs directly influences the final superposition inclination angle of the subsequent material supporting arm 63. Preferably, the main frames on two sides of the upright post 44 adopt 180 hot rolled channel steel, the channel steel groove is used as a guide slideway, the second deep groove ball bearing 532 in the small wheel axle 531 is directly arranged to enable the second deep groove ball bearing to roll vertically and linearly along the channel steel groove, and the bearing stop 5361 is welded on the inner sides of the upper flange and the lower flange of the channel steel to prevent the small wheel axle 531 from moving axially, so that the lifting trolley 53 only keeps the longitudinal freedom degree of up and down movement and limits the left and right transverse freedom degree under the working condition of reducing the lifting retardation by adopting rolling friction. The top end of the upright post 44 is provided with a tension chain wheel assembly 51, and the center line of the chain wheel 511 is consistent with the geometric symmetry center line of the upright post 44 and the axis of the piston rod of the lifting cylinder 21, so that chain shake/chain release caused by unbalanced load is prevented, and the chain links can enter and exit for meshing conveniently.

Preferably, as shown in fig. 1, 13 to 16 and 20 to 24, in one embodiment of the present invention, the side wings of the channel steel of the main frame of the upright 44 are welded and fixed with 1 group of L-shaped sliding rails, and are arranged in mirror symmetry with the geometric symmetry center line of the upright 44, and are matched with the concave-convex grooves of the base of the lifting arm 45, so that the lifting arm 45 can slide up and down along the side edges of the upright 44, and the ordinate of the tenth pin 4351 on the lifting arm 45 is changed, thereby affecting the motion track of the connecting rod 43 hinged with the lifting arm 45 and other components in the variable four-bar swinging mechanism 4, and finally affecting the tilting angle of the upright 44. The vertical linear sliding of the lifting arm 45 is realized by virtue of a lifting arm winding drum 455 and a fixed pulley 458 which are arranged on the side wings of the main frame channel steel of the upright post 44, and the programming of a power control system PLC and the control cooperation of an electromagnetic induction switch can realize synchronous automatic linear fine adjustment in the whole process, and the tilting swing angle of the upright post 44 is automatically adjusted in the running process of equipment so as to meet the process design requirement of the billet turning critical superposition dip angle. The lifting arm winding drum 455 is designed to have a large axial width and a double-wing edge structure, one end of the lifting arm winding drum is supported by the second gear motor 454, the other end of the lifting arm winding drum is antifriction by a bronze sliding bearing sleeve on the lifting arm winding drum support 456, and the fixed pulley 458 is antifriction by the bronze sliding bearing sleeve with the same material, and a groove is designed on the pulley to prevent the steel wire rope 452 from falling off. Fixed pulley 458 passes through fixed pulley support 457 welded fastening at the top of stand 44 main frame channel-section steel flank, and lift arm reel 455 passes through lift arm reel support 456 welded fastening in the bottom of stand 44 main frame channel-section steel flank, and the lift arm 45 that can slide from top to bottom is settled at the middle part of stand 44 main frame channel-section steel flank. When the lifting arm winding drum 455 rotates forward and backward under the driving of the second reducing motor 454, the steel wire rope 452 fixedly connected to the surface thereof can correspondingly extend or shorten, and the lifting arm 45 connected with the steel wire rope 452 can slide up and down in a straight line through the load transmission of the fixed pulley 458 and the change of the force direction, so that the ordinate of the lifting arm winding drum is changed in real time, and the online synchronous fine adjustment is realized. The first gear motor 31 and the second gear motor 454 can be independently adjusted, and can also be matched to act according to a certain rule after being programmed by virtue of the electric control PLC logic, so that the online real-time fine adjustment of parameters of 2 local key points is realized. The descending action of the lifting arm 45 mainly depends on the lifting force of the lifting arm winding drum 455, so that the on-line linear fine adjustment can be realized, the lifting arm 45 can also be fixed on the L-shaped slide rail of the upright post 44 by the screwing force of the self set screw 453 to form 1 group of fixed rotating hinges, and the specific adjustment mode can be selected according to the actual working condition of the site. Preferably, in order to facilitate winding of the steel wire rope 452 and prevent the up-and-down sliding retardation of the lifting arm 45 caused by unbalanced load, the invention adopts a double steel wire rope synchronous lifting scheme, 2 sets of steel wire ropes 452 with identical structures are adopted on site, correspondingly, the number of pulley assemblies 458 and fixed pulley supports 457 is two, the stress environment of the lifting arm 45 can be improved by adopting two fixed pulleys 458, the up-and-down sliding flexibility of the lifting arm 45 is prevented from being influenced by unbalanced load, 2 sets of steel wire ropes 452 are arranged on two sides of the geometric symmetry axis of the lifting arm 45 in a mirror symmetry manner and are firmly connected with the geometric symmetry axis, after double sets of steel wire ropes bypass the fixed pulleys 458, the steel wire ropes are uniformly wound on two ends of the lifting arm winding drum 455, and the lifting arm 45 is driven to lift by synchronous extension or shortening through rotation of the lifting arm winding drum 455. In addition, lubricating grease is smeared on the matching surfaces of the L-shaped slide rail and the groove at one end of the lifting arm 45, so that friction is reduced, and the lifting arm 45 can slide up and down along the L-shaped slide rail conveniently.

As shown in fig. 3, the variable four-bar linkage 4 is a typical planar four-bar linkage in mechanical principles, the upright 44 is fixedly hinged with the third hinged support 442 fixed on the base 15 through an eleventh pin shaft 441 to form a level I mechanism with a spatial degree of freedom of 1 and capable of swinging left and right, the connecting rod 43 and the swinging rod 41 are hinged through the inner pair (seventh pin shaft 4141) to form a level II rod group with 2 outer pairs, 1 inner pair and a spatial degree of freedom of 0, one of the 2 outer pairs included in the level II rod group is hinged with the swinging rod seat 412 through a sixth pin shaft 413, and the other outer pair is hinged with the level I mechanism of the next stage, namely the upright 44 through a tenth pin shaft 4351 to form a level II mechanism assembly with 1 level I mechanism and 1 level II rod group being flexibly hinged and regularly moving. The variable four-bar swinging mechanism 4 comprises 3 free movable components (upright 44, connecting bar 43 and swinging bar 41) and 4 groups of low-rotation pairs (sixth pin 413, seventh pin 4141, tenth pin 4351 and eleventh pin 441), the space activity degree of freedom is F=3n-2 PL-PH= 3*3-2 x 4-0=1, and the limiting requirement of the mechanism on the space degree of freedom of a prime mover in mechanical design is completely met, so that the whole variable four-bar swinging mechanism 4 can drive the connecting bar 43 and the upright 44 to regularly perform fixed track movement on the premise that the swinging bar 41 driven by the swinging power mechanism 1 is an active component.

Preferably, as shown in fig. 1, 17, 18, 25 and 26, in one embodiment of the present invention, the adjustable tension sprocket lifting mechanism 5 is mainly composed of a tension sprocket assembly 51 and a lifting trolley 53, which is an important part of the power output transmission process of the present invention. The tensioning chain wheel assembly 51 is arranged at the topmost end of the upright post 44, mainly plays a role in force transmission and guiding, adjusts the meshing wrap angle of the chain wheel 511, converts the obliquely downward output tension of the lifting cylinder 21 into the lifting tension in the vertical direction through flexible connection of the sleeve roller chain 52, and pulls the lifting trolley 53 to linearly lift along channel steel of main frames at two sides of the upright post 44. The mounting channel steel 516 at the top end of the upright post 44 is used as a mounting base platform of the tension sprocket assembly 51, the geometric symmetry center line of the upright post 44 is used as an assembly datum line, the assembly datum line is directly welded and fixed at the top end of the upright post 44, the sprocket 511 and the piston rod of the lifting cylinder 21 are arranged in a collinear way, the back surface of the mounting channel steel 516 is welded by 2 strip-shaped steel plates with the thickness of 14mm to form a slideway, and the tension plate 513 is coated to enable the tension plate to reciprocate linearly up and down along the slideway. Inside the sprocket 511, 2 sets of aligning roller bearings are designed, and are integrally fitted on the tension plate 513 together with the sprocket shaft 512. The tensioning plate 513 is milled with an oblong through hole so that 2 sets of fixing bolts 514 fixed to the back of the mounting channel 516 can slide longitudinally relative to each other in the oblong through hole. In order to facilitate the vertical coordinate fine adjustment and fixation of the sprocket 511, a tensioning nut is welded on the back of the mounting channel steel 516, and is screwed with the tensioning screw rod to form a tensioning screw rod pair 515, so that the tensioning screw rod is manually lifted, fine-adjusted and slid along the slideway against the tensioning plate 513, and after the adjustment is in place, the mounting channel steel 516 and the tensioning plate 513 are tightly connected into a rigid integral component by using the fixing bolt 514.

Preferably, as shown in fig. 1, 17, 25 and 26, in one embodiment of the present invention, the lifting trolley 53 is an extremely important sliding lifting member in the system, and the lifting trolley 53 mainly functions to change the ordinate of the load-bearing rod assembly 62 and the material-supporting arm 63 in the gravity spring tilting mechanism 6, so as to convert the power output of the lifting cylinder 21 into gravitational potential energy at the height of the billet, and provide energy reserve for the kinetic energy impact of subsequent billet falling and tilting. The lifting trolley 53 is of a rectangular frame assembly structure design, and is formed by combining 2 telescopic beams 538 on two side surfaces, a rear 1 trolley pressing plate 533 and a top 1 lifting plate 537, wherein the top lifting plate 537 is directly welded on the upper surface of the 2 telescopic beams 538 and is flexibly connected with the sleeve roller chain 52 to transfer the output tension of the lifting cylinder 21. The trolley pressing plates 533 are respectively fixed on the rear end surfaces of the 2 telescopic beams 538 by bolts, and fine tooth nuts of M36 are designed at the middle positions of the trolley pressing plates and are in screwed fit with the adjusting rods 534. The adjusting rod 534 is provided with a counterweight 535 in a rotating manner to balance the additional tilting moment caused by the lifting working condition of the steel billet of the material supporting arm 63, so as to increase the stability of the upright post 44. In the actual use process, the counter weight 535 can be rotated on the adjusting rod 534 according to the actual weights of billets with different specifications on site to change the abscissa thereof, so that the moment arm distance of the gravity center of the counter weight 535 relative to the center point of the revolute pair of the third hinged support 442 is changed, the actual requirement of on-site tipping moment balance is met, the stability and the flexibility of the system movement are improved, and the response time is shortened.

Preferably, as shown in fig. 17, 25 and 26, in one embodiment of the present invention, the telescopic beam 538 is an elongated plate-shaped member, a groove slide is provided at the middle in the height direction of the telescopic beam 538, the groove slide extends from the rear end surface of the telescopic beam 538 to the front end surface of the telescopic beam 538, and the length direction of the groove slide is consistent with the length direction of the telescopic beam 538, that is, the groove slide is milled in the middle of the telescopic beam 538 and covers the upper and lower surfaces of the small wheel axle 531 of the square cross-section structure so as to be longitudinally slidable along the slide. The small wheel axle 531 is provided with a step blind hole milled at the geometric symmetry center line position, and is provided with a third deep groove ball bearing 536 which is matched with the adjusting rod 534, so that the adjusting rod 534 and the small wheel axle 531 are connected into a relatively movable and rotary integral component, and can synchronously slide longitudinally along the axis of the adjusting rod 534. When the adjusting lever 534 is manually rotated, since the small wheel axle 531 is stationary relative to the upright post 44, the internal thread on the trolley pressing plate 533 will longitudinally reciprocate along the axis of the adjusting lever 534, so as to drive the 2 telescopic beams 538 to be sleeved on the upper and lower surfaces of the small wheel axle 531, transversely slide and adjust along the own slideway, and finally change the plane coordinates of the material supporting arm 63 relative to the billet, so as to adapt to the special working condition that the material supporting arm 63 still cannot touch the billet or the contact quantity is less under the condition that the base 15 is already installed and positioned due to the limitation of the installation structure layout. In order to reduce friction retardation and improve flexibility and accuracy of lifting movement of the lifting trolley 53, two sides of the trolley axle 531 are respectively provided with a second deep groove ball bearing 532, the deep groove ball bearings roll and slide up and down in channel steel grooves on two sides of the upright post 44 in a rolling friction mode, and in order to prevent axial movement of the second deep groove ball bearings 532, side sides of upper and lower flanges of channel steel of the upright post 44 are welded with bearing stop blocks 5361 and fixed shafting is assembled.

Preferably, as shown in fig. 1, 17 and 27, in one embodiment of the present invention, the gravity spring tilting mechanism 6 is mainly composed of a load-bearing rod assembly 62 and a material supporting arm 63, which are combined together, and is a core execution member of the present invention. The load-bearing rod assembly 62 is a set of nut-supported rotating, screw-axial linear-motion sliding screw pair mechanism, which is designed with 2 groups in total, is directly welded and fixed on the cross beam 61, and is arranged in mirror symmetry with respect to the geometric symmetry center line of the lifting trolley 53. The sleeve 625 is of a cuboid hollow structure design, is internally bored with 2 groups of upper and lower stepped holes, is respectively and independently sleeved with 2 groups of fourth deep groove ball bearings, is axially and bidirectionally fixed by an upper gland 623 and a lower gland 628 respectively to form a complete integral double-rolling bearing supporting seat, is welded and fixed on the side face of the cross beam 61, is finally welded with the cross beam 61 integrally on the front end face of the telescopic beam 538 in the lifting trolley 53, and is fixedly connected with the lifting trolley 53 to form a rigid integral member. The material supporting arm 63 is the most downstream ring in the system, and is also the most central key execution component in the whole system, and 2 groups are arranged symmetrically left and right relative to the geometric symmetry center line mirror image of the lifting trolley 53, and the design of the process movement track directly influences the action accuracy and the operation efficiency of billet overturning.

As shown in fig. 1, 6 and 28, the material supporting arm 63 is a core part of the design of the present invention and is also a critical executing mechanism, the structural design of the present invention adopts the motion design principle of a planar multi-rod mechanism, and a new connecting rod mechanism is designed by repeatedly stacking and combining a class II rod group with a degree of freedom of 0 on a class I mechanism with a degree of freedom of 1. The material supporting arm 63 is hinged on the bearing rod 621 and can swing up and down to form a level I mechanism, the spring seat 642 is hinged on the lifting nut 641 fixed on the bearing rod 621 and is matched with the guide rod 644 in an inner pair moving way to form a level II rod group, the thirteenth pin roll 631 rotatably hinges the level I mechanism and the level II rod group, and a damping spring 643 is adopted to buffer and absorb vibration to jointly form a new plane multi-rod mechanism.

Preferably, as shown in fig. 18 and 27, in one embodiment of the present invention, the bearing nut 626 is a hollow dual-shoulder cylinder structure, a through long unthreaded hole is drilled in the center, an M50 fine thread is turned, and the bearing nut is designed to be screwed with an external thread of the bearing rod 621, an upper group of cylindrical shoulders and a lower group of cylindrical shoulders are symmetrically designed on the outer cylindrical surface of the bearing nut, the bearing nut is respectively sleeved on an upper group of fourth deep groove ball bearing inner rings and a lower group of fourth deep groove ball bearing rings of the sleeve 625, and 4 groups of handles 622 are welded and fixed on the top of the bearing nut 626, so that the manual labor-saving operation is facilitated. When the handle 622 is rotated in the forward/reverse direction, the bearing nut 626 can freely rotate around the axis of the bearing nut 626 in a circumferential direction flexibly under the bearing and antifriction conditions of the fourth deep groove ball bearing in the sleeve 625, the bearing rod 621 which is rotatably matched with the bearing nut 626 can synchronously and directly ascend or descend, the space distance between the working surface of the material supporting arm 63 and the lower bottom surface of the billet can be accurately adjusted, and the design stroke of the lifting cylinder 21 can be compensated to the greatest extent under the working condition that the base 15 is fixedly installed and dead and the integral elevation of the equipment cannot be continuously adjusted. The bearing rod 621 is a 60-degree triangle tooth-shaped external thread with an elongated rod-shaped structure, an earring with a fork-shaped structure is welded at the bottom, a fourth shaft sleeve 633 made of antifriction bronze is embedded in the earring and is movably hinged with the material supporting arm 63, the tooth-shaped self-locking anti-falling positioning of the triangle thread of the sliding screw pair is relied on after the installation elevation of the material supporting arm 63 is adjusted in place, the bearing rod 621 is prevented from suddenly failing and sliding in the bearing nut 626, in addition, 2 groups of locknuts are screwed at the top of the bearing rod 621 for loosening, the reliability of fixed connection is improved, and failure falling is prevented. Wherein hold in palm material arm 63 adopts asymmetric T template frame structure, and the front end bears the weight of the district slightly long for lift the steel billet, and the afterbody is shorter, mainly used places rotatory spring damping 64, and its whole adopts 50 mm's thick steel sheet linear cutting shaping, and 10mm wide sideslip slide is reserved in the centre for assemble movable otic placode 634, left and right sides sideslip when being convenient for its lateral adjustment. The upper end of the vertical portion of the material supporting arm 63 is provided with a set of sliding bearing revolute pairs, the fourth shaft sleeve 633 is assembled in an embedded mode, and the fourth shaft sleeve is hinged to the fork-shaped ear ring at the bottom of the bearing rod 621, and can freely rotate and swing left and right around the axis of the fourteenth pin shaft 637 to change the horizontal inclination angle of the material supporting arm 63 and the steel billet. The bottom of the front section of the material supporting arm is provided with 2 groups of sliding bearings with obvious differences in inner and outer holes, and a fifth sliding antifriction shaft sleeve 636 is embedded in the sliding antifriction shaft sleeve so as to facilitate disassembly and assembly, so that the screw 635 can be longitudinally sleeved into the 2 groups of integral sliding bearings from the end surface of the front section of the material supporting arm.

Preferably, as shown in fig. 18, 27 and 28, in an embodiment of the present invention, an internal thread is designed at the bottom of the movable ear plate 634 and an external thread of the screw 635 are screwed together to form a set of manual sliding screw pairs, when the screw 635 is rotated manually forward/backward, the movable ear plate 634 will slide longitudinally and reciprocally along the axis of the screw 635, so as to drive the stop block welded and fixed at the top of the movable ear plate 634 to move linearly left and right along the slideway in the middle of the front section of the material supporting arm, so as to adapt to the adjustment requirement of the precision position degree of lifting and matching of billets with different section specifications with the material supporting arm 63 at different positions in the longitudinal direction of the raceway, and enable the billets to tilt and overturn at the optimal matching position on the material supporting arm 63. The movable lug 634 has another main function of restraining the transverse sliding of the steel billet, preventing the inclined steel billet from sliding from the upper surface of the supporting arm 63 in the ascending process of the lifting trolley 53, and playing the role of bearing and tilting support at the moment of the steel billet touching and overturning in the rapid descending process of the supporting arm 63, so that the inclined steel billet breaks the moment dynamic balance of the inclined state of the steel billet under the action of the dead weight of the steel billet and the descending impact load along the side line contacted with the movable lug 634, and passes through the dynamic balance inclination angle and the fixed pivot point to rotate, thereby realizing the automatic overturning of the steel billet. The thirteenth pin roll 631 is welded and fixed on the tail section of the material supporting arm, is in rotary hinged fit with the guide rod 644, is respectively provided with a set of rotary spring damping bodies 64, has 2 groups, and is respectively hinged on the outer side surfaces of 2 sets of material supporting arms 63 which are arranged in a mirror symmetry mode.

Preferably, as shown in fig. 18, 27 and 28, in one embodiment of the present invention, the rotary spring damping body 64 is mainly formed by combining the guide rod 644, the damping spring 643, the spring seat 642, the lifting nut 641 and other components, and has the main functions of providing a reverse balance damping moment for the heavy-load tipping of the material supporting arm 63, slowing down the swing impact, and providing a reset tipping moment when the material supporting arm 63 continues to descend under no load after the steel billet is unloaded, so that the steel billet is re-swung and adjusted to the initial horizontal position, and the posture is prepared for the next round of steel billet tipping. The lifting nut 641 is sleeved on the bearing rod 621, can slide up and down along the axis thereof, is provided with a hinged trunnion on the side surface and is hinged with the spring seat 642 in a rotating way, and has the main functions of adjusting the horizontal included angle between the guide rod 644 and the material supporting arm 63, further adjusting the acting direction of the elastic force output by the damping spring 643, leading the guide rod 644 to move flexibly, enabling the top of the guide rod 644 to slide freely in a long oval hole on the upper plane of the spring seat 642 without blocking, and keeping the horizontal state after the material supporting arm 63 is unloaded and reset. After the lifting nut 641 is adjusted and positioned through field experiments, the lifting nut can be fixedly locked by using the upper and lower 2 nuts screwed on the bearing rod 621. If there is a significant retardation in the movement of the guide rod 644, the screw position between the upper and lower 2 nuts on the bearing rod 621 can be adjusted so that the upper and lower planes of the lifting nut 641 are not tightly locked, but a proper fit clearance is left, so that the lifting nut 641 can slide up and down on the bearing rod 621 in a small range, and the axial freedom degree of the lifting nut is reserved. Wherein, the spring seat 642 is a rectangular L-shaped structure, the upper plane is milled with a oblong hole, which is matched with the guide rod 644, so that the top of the spring seat 642 can slide in the slideway of the oblong hole, the oblong hole means that the two ends of the cross section of the hole are arc-shaped, the corresponding end points of the two arc-shaped are connected by a straight line to form the oblong hole, the through hole on the side surface of the spring seat 642 is hinged and matched with the pin shaft on the lifting nut 641, so that the spring seat 642 can freely rotate around the pin shaft axis of the lifting nut 641 to adapt to the change of the motion matching angle of the spring seat 642, the damping spring 643 and the guide rod 644, the movement freedom degree is reserved, and the action direction of the output elastic force is ensured not to incline so as to cause unbalanced load and sliding retardation. The guide rod 644 is a screw shaft having a full-length and full-wire structure, and is provided with a washer and nut 645 screwed thereto at a lower portion. The damping spring 643 is axially sleeved on the guide rod 644, one end is fixed, one end moves to support and fix, the top of the damping spring 643 is a fixed end and is in pressing contact with the upper plane of the spring seat 642, the bottom of the damping spring 643 is an adjustable moving end, the damping spring is vertically arranged on the gasket 645 and can slide up and down along the axis of the guide rod 644 along with the gasket 645, the gasket 645 mainly plays a role of a spring mounting base, when the gasket 645 is rotated, the precompression amount of the damping spring 643 can be adjusted, the pretightening force of the damping spring 643 is changed, and therefore the load characteristic curve of the spring is optimized, and the material supporting arm 63 can freely buffer inclined swing in heavy load and can flexibly reset in idle load horizontal mode. The damping spring 643 can be a cylindrical helical compression spring or a disc spring according to the actual requirements of the site, and preferably a disc spring, and the stiffness and load characteristic curve of the combined spring are changed through different combination modes (superposition or involution) and quantity matching of the disc springs, so that the actual working condition requirements of the site are met.

The sliding friction parts related to the invention are made of bronze materials with enough rigidity, strength, wear resistance and antifriction property, and are coated with extreme pressure lithium-based lubricating ester, so that friction resistance is reduced, friction power loss of a system is reduced, and operation flexibility is improved. Considering the actual working conditions of high-temperature, low-speed and intermittent transmission on site and the good machining process performance of materials, the tin phosphor bronze ZCUSn10P1 and the tin bronze CuPb5Sn5Zn5 with good antifriction property are preferably selected, and the high-speed and intermittent transmission on-site is remarkably characterized by low hardness, high plasticity, small elastic modulus, good running-in property, good compliance and embedding property and higher compression resistance, impact load fatigue strength. The aluminum bronze ZCuAl Fe3 with higher mechanical strength and wear resistance can also be used for replacing the aluminum bronze materials, as limited by market supply and cost. The bearing spiral members related to the invention are all preferably made of alloy steel 20Cr with good comprehensive mechanical properties, and if the comprehensive cost is considered, the bearing spiral members can also be replaced by adopting high-quality carbon structural steel 45 for modulation treatment.

In addition, the turnover machine adopts an overhead modularized design thought and a unified installation platform, all mechanisms are intensively and symmetrically arranged on the base 15, the whole layout is compact, the on-site installation and maintenance are convenient, the whole set of equipment installation elevation is positioned above the roller table working surface, the equipment can be integrally hoisted on the roller table cover plate by using a travelling crane, the base 15 and the roller table cover plate are firmly connected by adopting an on-site welding or bolting mode, the on-site tipping moment and impact load are transmitted to the roller table foundation through the roller table cover plate and the roller table, the concrete foundation is not required to be independently and additionally made for the steel billet turnover machine, and the turnover machine has the remarkable characteristics of quick disassembly and assembly, convenient maintenance and low cost.

From the above description, it can be seen that the above embodiment of the invention realizes the following technical effects that the swing lifting spring damping gravity billet turnover machine is mainly formed by combining six parts of a swing power mechanism 1, a lifting power mechanism 2, a sliding spiral cam adjusting mechanism 3, a variable four-bar swinging mechanism 4, an adjustable tensioning chain wheel lifting mechanism 5 and a gravity spring turnover mechanism 6, the turnover machine realizes the fixed angle inclination in the lifting process of a hot billet in a material supporting arm 63 by means of damping and buffering of a rotary spring damping body, enables the hot billet to reach a critical turnover angle, converts rising potential energy into descending impact kinetic energy in the falling process of a lifting trolley 53, breaks the instantaneous posture balance of the billet in the critical turnover state contacting the surface of a roller table by means of the action of instantaneous impact load, realizes gravity impact turnover, removes the surface overheat iron scale, and efficiently and conveniently realizes the purpose of 90-degree automatic turnover of the billet.

The turnover machine adopts a plane low-pair multi-rod mechanism formed by hinging and combining a revolute pair and a movable pair, has the characteristics of compact structural layout, large radial contact area, low bearing pressure and wear resistance, and can accurately turnover and regulate the postures of hot-rolled/cold-rolled billets of different specifications. According to the invention, the special design scheme is adopted in the sliding spiral cam adjusting mechanism 3, the variable four-bar linkage swinging mechanism 4 and the gravity spring tilting mechanism 6 to accurately regulate and control the local motion track and stress distribution of each component in the tilting machine, and finally, the track parameter of the downstream-most actuating mechanism is influenced, so that the actual requirement of the on-site working condition parameter is met. The invention adopts the design of the auxiliary adjusting mechanisms, and the phase adjustment freedom of each component is more when the turnover machine actually runs, so the flexibility of the movement of each component and the variability of the track are extremely strong, the turnover machine can adapt to various different working condition occasions, and because the modularized design of unit combination is adopted, each set of subsystems such as the variable four-bar swinging mechanism 4, the swinging frame adjusting mechanism, the swinging rod rocker arm pull rod mechanism and the material supporting arm mechanism can be combined to move and disassembled to be used as relatively independent subsystems to be applied to other mechanical design related fields, thereby meeting different design requirements and having good interchangeability.

Meanwhile, the swinging lifting spring damping gravity billet turnover machine can turn a high-temperature billet discharged from a heating furnace of a hot rolling production line of a bar material by 90 degrees before rolling, change the order of the biting surface of the billet in the conjugate pass rolling between two rollers, improve the control precision of the inlet material of a rolling mill, meet the requirements of the on-site rolling deformation process, remove the overheated ferric oxide on the surface of the billet, improve the appearance quality of the surface of the rolled material, improve the on-site production rhythm, reduce the rolling current and reduce the process faults. The turning machine has the remarkable characteristics of simple structure, low cost, reliable operation, quick response and strong adaptability, and is a novel steel billet turning machine with wide application, high automation degree, convenient installation and strong universality.

In addition, the turnover machine has the remarkable characteristics of multiple degrees of freedom, small volume, light weight, compact structural layout, convenient disassembly and maintenance and high automatic adjustment precision, and is particularly suitable for process optimization adjustment of the biting surface of a rolling mill in the uppermost stream rolling procedure after hot rolled steel and plate/wire rod hot state billets are discharged out of the furnace and improvement of the appearance surface quality of a finished product, reduces the process faults of a roughing mill and improves the on-site rolling rhythm.

The above is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. The swinging lifting type spring damping gravity billet tilting machine is characterized by comprising a swinging power mechanism, a lifting power mechanism, a sliding spiral cam adjusting mechanism, a variable four-bar swinging mechanism, an adjustable tensioning chain wheel lifting mechanism and a gravity type spring tilting mechanism;

The sliding spiral cam adjusting mechanism is connected with the variable four-bar linkage swinging mechanism and is used for adjusting the horizontal coordinate and/or the vertical coordinate of a swinging rod seat in the variable four-bar linkage swinging mechanism so as to linearly adjust the swinging angle of a stand column in the variable four-bar linkage swinging mechanism;

the swing power mechanism is connected with the variable four-bar swinging mechanism and is used for providing power for the variable four-bar swinging mechanism;

The lifting power mechanism is respectively connected with the variable four-bar linkage swinging mechanism and the adjustable tensioning chain wheel lifting mechanism and is used for providing power for the adjustable tensioning chain wheel lifting mechanism;

The adjustable tensioning chain wheel lifting mechanism is arranged on the upright post and connected with the gravity spring tilting mechanism, and is used for changing the direction of the power output by the lifting power mechanism so as to drive the gravity spring tilting mechanism to reciprocate up and down;

The steel billet is placed at the tail end of the gravity spring tilting mechanism, the gravity spring tilting mechanism reciprocates up and down in a straight line or swings left and right to enable the steel billet to reach a tilting angle of critical balance, thereby realizing the tilting of the steel billet,

The sliding spiral cam adjusting mechanism comprises a sliding spiral mechanism, a wedge type sliding cam mechanism and a jacking rod frame;

The sliding screw mechanism comprises a first speed reducing motor, a transverse adjusting nut and a transverse adjusting screw rod, wherein the output end of the first speed reducing motor is fixedly connected with one end of the transverse adjusting screw rod, and the transverse adjusting nut is in threaded connection with the transverse adjusting screw rod;

the inclined wedge type sliding cam mechanism comprises a swing frame, a longitudinal adjusting nut, a longitudinal adjusting screw rod, an inclined slideway and a mandril;

The bottom of the swing frame is hinged with the upper plane of the transverse adjusting nut, the longitudinal adjusting screw rod is rotatably arranged on the inner side of the swing frame, the longitudinal adjusting screw rod is in threaded connection with the longitudinal adjusting screw rod, the bottom of the longitudinal adjusting screw rod is hinged with the upper plane of the transverse adjusting nut, one end of the inclined slide rail is hinged with the longitudinal adjusting screw rod, and the other end of the inclined slide rail is hinged with the upper plane of the transverse adjusting screw rod;

one end of the ejector rod is hinged with the inclined slideway, the other end of the ejector rod is fixedly connected with the bottom of the swing rod seat, the top of the ejector rod frame is provided with a sleeve, the bottom of the ejector rod frame is fixedly arranged, the ejector rod is arranged in the sleeve,

The variable four-bar swinging mechanism further comprises a connecting bar, a swinging bar, a base, a swinging bar upper sliding seat, a swinging bar lower sliding seat and a lifting arm;

one end of the upright post is hinged with the base, and one end of the swing rod is hinged with one end of the swing rod seat;

one end of the lifting arm is in adjustable sliding connection with one side of the upright post, and the other end of the lifting arm is hinged with one end of the connecting rod;

One end of the swing rod upper sliding seat is in adjustable sliding connection with one side of the swing rod, and the other end of the swing rod upper sliding seat is hinged with the other end of the connecting rod;

One end of the swing rod lower sliding seat is in adjustable sliding connection with the other side of the swing rod, the other end of the swing rod lower sliding seat is hinged with the output end of the swing power mechanism, the tail end of the swing power mechanism is hinged with the base, the tail end of the lifting power mechanism is hinged with the connecting rod,

The gravity type spring tipping mechanism comprises a cross beam, two groups of bearing rod assemblies, two groups of material supporting arms and two groups of rotary spring damping bodies;

The two groups of bearing rod assemblies are fixedly arranged at two ends of the cross beam, the material supporting arms comprise transverse parts, vertical parts and movable lug plates, and one ends of the bearing rod assemblies are hinged with the upper ends of the vertical parts;

the two groups of rotary spring damping bodies are respectively hinged to the outer side surfaces of the tail parts of the material supporting arms which are symmetrically arranged by the two groups of mirrors;

The rotary spring damping body comprises a guide rod, a damping spring, a spring seat and a lifting nut;

The lifting nut is in threaded fit with the bearing rod assembly, a hinged trunnion is arranged on the side face of the lifting nut, the hinged trunnion is hinged with a through hole on the side face of the spring seat, the damping spring is axially sleeved on the guide rod, one end of the damping spring is fixed, the other end of the damping spring moves, the top of the guide rod is slidably arranged in a oblong hole on the upper portion of the spring seat, and the bottom of the guide rod is hinged with the outer side face of the tail portion of the material supporting arm.

2. The swing lift spring damped gravity billet tilting machine of claim 1, wherein said sliding helical cam adjustment mechanism further comprises an L-shaped slide and a locking bolt;

the bottom of the L-shaped slide rail is fixedly arranged, and the bottom of the ejector rod frame is in sliding connection with the top of the L-shaped slide rail;

the locking bolt is arranged between the bottom of the ejector rod frame and the top of the L-shaped slide rail, and is used for fixedly connecting the bottom of the ejector rod frame with the top of the L-shaped slide rail.

3. The swing lift spring damped gravity billet tilting machine of claim 1, wherein said links comprise a link sleeve, two link beams, a set screw, a support, an adjustment rod, and a set nut;

The connecting rod sleeve is of a hollow box-shaped structure, and the other ends of the two connecting rod beams are symmetrically inserted from two ends of the connecting rod sleeve;

Two groups of threaded holes are formed in two sides of the connecting rod sleeve in a mirror symmetry mode respectively, and the fastening bolts are screwed into the threaded holes and are in contact with the connecting rod beam so as to fixedly connect the connecting rod beam with the connecting rod sleeve;

The other end of the lifting arm is hinged with one end of one connecting rod beam, and the other end of the upper sliding seat of the swing rod is hinged with one end of the other connecting rod beam;

The support is fixedly arranged on the connecting rod beam, the fixing nut is fixedly arranged on the connecting rod sleeve, one end of the adjusting rod is in rotary fit with the support, the other end of the adjusting rod is in fit with the fixing nut, and the tail end of the lifting power mechanism is hinged with the connecting rod sleeve;

The variable four-bar linkage swing mechanism further comprises two sets of swing rod rocker arm pull rod mechanisms, wherein each set of swing rod rocker arm pull rod mechanism comprises a rocker arm pull rod, two rocker arm earrings and a rocker arm;

one end of the rocker arm is hinged with the rocker arm, the other end of the rocker arm is hinged with one end of one rocker arm earring, one end of the other rocker arm earring in one set of rocker arm pull rod mechanism is hinged with the rocker arm upper sliding seat, and one end of the other rocker arm earring in the other set of rocker arm pull rod mechanism is hinged with the rocker arm lower sliding seat;

the rocker arm pull rod is of a double-screw structure capable of rotating synchronously, and the two ends of the rocker arm pull rod are respectively matched with the other ends of the two rocker arm earrings by adopting fine tooth external threads in the positive and negative directions.

4. The swing lift spring damped gravity billet tilting machine of claim 1, wherein said variable four bar linkage swing mechanism further comprises a lift arm spool, a fixed pulley, a lift arm spool support, a fixed pulley support, a second gear motor and a wire rope;

The fixed pulley is fixedly arranged at the top of one side of the upright post through the fixed pulley support, the lifting arm winding drum is fixedly arranged at the bottom of one side of the upright post through the lifting arm winding drum support, the output end of the second speed reducing motor is fixedly connected with the lifting arm winding drum, and the lifting arm is in sliding connection with one side of the upright post;

one end of the steel wire rope is fixedly connected with the lifting arm, and the other end of the steel wire rope bypasses the fixed pulley and is fixedly connected with the lifting arm winding drum.

5. The swing lift spring damped gravity billet tilting machine of claim 1, wherein said adjustable tension sprocket lifting mechanism comprises a tension sprocket assembly, a sleeve roller chain and a lifting trolley;

the tensioning chain wheel assembly comprises a chain wheel, a chain wheel shaft and a tensioning plate;

The chain wheel is rotatably arranged at one end of the tensioning plate through the chain wheel shaft, and the other end of the tensioning plate is fixedly arranged at the top end of the upright post;

The lifting trolley comprises a trolley wheel shaft, a trolley pressing plate, a lifting plate and two telescopic beams;

The telescopic beams are strip-shaped plate-shaped members, a groove slideway is arranged in the middle of the height direction of each telescopic beam, the groove slideway extends from the rear end face of each telescopic beam to the front end face of each telescopic beam, the length direction of each groove slideway is consistent with the length direction of each telescopic beam, the lifting plates are fixedly arranged on the upper surfaces of the two telescopic beams, the two ends of each trolley pressing plate are fixedly arranged on the rear end faces of the two telescopic beams, and the gravity spring tipping mechanism is fixedly arranged on the front end faces of the telescopic beams;

the small wheel shafts are arranged in the groove slide ways in a sliding manner, guide slide ways are arranged on two opposite inner side walls of the upright post, and two ends of the small wheel shafts are respectively connected with the guide slide ways in a sliding manner;

one end of the sleeve roller chain is fixedly connected with the output end of the lifting power mechanism, and the other end of the sleeve roller chain bypasses the chain wheel and is fixedly connected with the lifting plate.

6. The swing lift spring damped gravity billet tilting machine of claim 5, wherein said lift truck further comprises an adjustment lever and a second deep groove ball bearing;

A step blind hole is formed in the geometric symmetry center line of the trolley wheel shaft, the second deep groove ball bearing is arranged in the step blind hole, and a fine tooth nut is arranged in the middle of the trolley pressing plate and is in rotary fit with the adjusting rod;

one end of the adjusting rod penetrates through the trolley pressing plate to be matched with the second deep groove ball bearing.

7. The swing lift spring damped gravity billet tilting machine of claim 5, wherein

The cross beams are fixedly arranged on the front end face of the telescopic beam, and the two groups of bearing rod assemblies are arranged in mirror symmetry with respect to the geometric symmetry center line of the lifting trolley;

The lower extreme of vertical portion with horizontal portion fixed connection will horizontal portion cuts apart into and holds in the palm the material arm anterior segment and hold in the palm the material arm tail section, hold in the palm the length of material arm anterior segment is greater than hold in the palm the length of material arm tail section, movable otic placode sets up hold in the palm on the material arm anterior segment.

8. The swing up-down spring damped gravity billet tilting machine of claim 7, wherein said rotary spring damping body further comprises a base nut;

the guide rod is a screw rod shaft with a through long full-wire structure, and the base nut is in threaded fit with the lower part of the guide rod;

The top of the damping spring is in compression contact with the upper plane of the spring seat, and the bottom of the damping spring is fixedly arranged on the base nut.