CN215314740U - Gravity type spring tipping machine - Google Patents

Abstract

The utility model provides a gravity type spring tipper, which comprises a driving mechanism, a stand column, 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 stand column is arranged on the top of the stand column; the driving mechanism is fixedly arranged on the upright post, the two groups of bearing rod assemblies are fixedly arranged at two ends of the cross beam, and the output end of the driving mechanism is fixedly connected with the center of the cross beam; the material supporting arm comprises a transverse part, a vertical part and a movable lug plate, the movable lug plate is arranged on the front section of the material supporting arm, and one end of the bearing rod component is hinged with the upper end of the vertical part; the two groups of rotary spring damping bodies are respectively hinged on the outer side surfaces of the tails of the two groups of material supporting arms which are arranged in a mirror symmetry mode. The gravity type spring tipper can turn over a high-temperature billet discharged from a heating furnace of a section/bar hot rolling production line by 90 degrees before rolling, meets the requirements of a field rolling deformation process, removes overheated iron oxide on the surface of the billet, improves the surface appearance quality of a rolled material, improves the field production rhythm, reduces the rolling current and reduces process faults.

Description

Gravity type spring tipping machine

Technical Field

The utility model relates to the technical field of steel rolling, in particular to a gravity type spring tipping machine.

Background

Firstly, in the production process of hot-rolled bars and plate profiles, a billet needs to be pushed into a heating furnace to uniformly and slowly heat the blank in the furnace to the initial rolling temperature set by the rolling process according to a preset temperature control curve, the billet is conveyed out by a furnace outlet roller way and then transferred to a hot rolling unit of each downstream process, and the billet is sequentially subjected to rolling deformation by reduction of conjugate pass of different passes of each unit, so that the blank is subjected to a progressive plastic extension deformation process rolling flow, and the qualified external dimension requirement designed by a finished rolled material is met. Because deviation exists in the adjustment quantity of the heating temperature, the heating time and the air-fuel ratio in the furnace, billet overheating is inevitably caused, once-overheated iron scale accumulation appears on the surface layer, if the iron scale on the surface layer of the billet cannot be completely removed before the next rolling procedure, a series of problems such as difficult roller biting, slipping, hole pattern abrasion and the like are inevitably caused in the subsequent rolling process, meanwhile, the iron scale on the surface layer is pressed into the surface of the section under the action of the radial pressing rolling force of the roller, so that the surface layer rolling defects such as spots, pits, scabs and the like are caused, the appearance quality of a product is influenced, the process rolling waste is caused, and unnecessary economic loss is caused.

Secondly, in the heating process of the regenerative heating furnace, because the lower bottom surface of the billet in the furnace is in sliding contact with the heat-resistant sliding block of the supporting water beam of the furnace body, the exposed area of the bearing supporting surface of the billet is insufficient, the billet cannot be in full contact with a radiation heat source, the heating temperature of the billet in the furnace is uneven only by conduction heating, particularly, the bottom of the billet is in contact with a refractory material area wrapped by a longitudinal water beam in the furnace, the black mark of the billet is obvious, the local temperature difference is large (about 60 ℃ of difference), the situation that the occlusal surface of the billet is hot up and cold down is caused, when a rolling mill rolls normally, the bitten billet is easy to bend downwards, the process faults such as the beam of the top pressing rolling mill, two-pass non-entering, steel biting difficulty and the like are caused, and in severe cases, such as instantaneous rolling current shock fracture and the like are caused, and major process equipment accidents are caused.

Thirdly, in the conventional hot rolling production process, the cross section of the raw material billet is generally square, but the raw material billet of the hot rolling production line is influenced by the casting section difference of the continuous casting billet in the upstream process, so that the raw material billet is likely to have obvious shape deviation, when a rolling mill bites into the square billet with the rectangular section, the bending section modulus of the long and wide part of the section is obviously different, the deformation resistance does not meet the rolling requirement of the process hole pattern design, the billet needs to be bitten into and rolled after being integrally turned over for 90 degrees, and the precise control of the material type of the on-site rolling is facilitated.

In summary, in order to avoid the influence of various adverse factors caused by one-time overheating scale of a billet and uneven heating in a furnace and meet the process requirements of on-site rolling of a billet with an opposite cross section, after the billet is discharged from the furnace after the heating process is completed, the whole hot billet is turned over for 90 degrees before entering the next rolling process, and then the conventional rolling process is carried out, so that the lower bottom surface with the black mark faces to the side of a rolled piece, the radial impact of an elbow on the rolled piece during biting is prevented, the instantaneous rolling impact current is reduced, the process fault frequency is reduced, the control and rhythm smoothness of the on-site rolling material type are facilitated, the overheating scale on the surface layer of the billet is removed in a shaking manner, and the appearance quality of the finished rolled material is improved.

At present, the two ways of manual intervention and turning or mechanical turning are commonly adopted in domestic hot rolling production lines to solve the problem of on-site hot billet turning. Manual intervention manual steel turnover is large in field workload, severe in environment, easy to cause personal safety accidents, and not beneficial to reasonable allocation of human resources, and special persons need to watch the steel; the mechanical turnover mostly adopts a hydraulic turnover type tilting gear, the structure is complex and heavy, a special hydraulic transmission mechanism needs to be configured, an actuating mechanism is arranged below a tapping roller way, the field installation and operation maintenance are extremely inconvenient, a concrete foundation needs to be separately and additionally poured and installed, the cost is high, the iron scale accumulation of a slag discharge channel is easily caused, the working efficiency of the roller way and a slag flushing system is influenced, the requirement on the professional skill quality of field personnel and the maintenance and use cost are high, and once a hydraulic system leakage fault occurs, an emergent oil fire accident is easily caused, and the serious loss of the field personnel and property is caused.

Therefore, how to research and develop an automatic billet turnover machine with simple structure, flexible and efficient action, convenient disassembly and assembly and low maintenance and use cost to realize the automatic 90-degree turnover of hot billets in a steel rolling production furnace before entering a rolling process, and meeting the field rolling process requirement is a technical bottleneck problem to be solved urgently in the field of hot rolling production at present.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a gravity spring tipper which can turn a high-temperature billet discharged from a heating furnace of a section/bar hot rolling production line by 90 degrees before rolling, change the sequence of the conjugate hole type rolling biting surface of the billet between two rollers, improve the control precision of the inlet material type of a rolling mill, meet the requirements of a field rolling deformation process, remove the overheated iron oxide on the surface of the billet, improve the surface appearance quality of a rolled material, improve the field production rhythm, reduce the rolling current and reduce process faults. Meanwhile, the device has the remarkable characteristics of simple structure, low cost, reliable work, rapid response and strong adaptability, and is a novel steel billet tilting gear with wide application, high automation degree, convenient installation and strong universality.

In order to achieve the above purpose, the utility model provides the following technical scheme:

a gravity type spring tipping machine comprises a driving mechanism, a stand column, a cross beam, two groups of bearing rod assemblies, two groups of material supporting arms and two groups of rotary spring damping bodies; the driving mechanism is fixedly arranged on the upright post, the two groups of bearing rod assemblies are fixedly arranged at two ends of the cross beam, the two groups of bearing rod assemblies are arranged in a mirror symmetry mode about a geometric symmetry center line of the driving mechanism, and an output end of the driving mechanism is fixedly connected with the center of the cross beam; the material supporting arm comprises a transverse part, a vertical part and a movable lug plate, the lower end of the vertical part is fixedly connected with the transverse part and divides the transverse part into a material supporting arm front section and a material supporting arm tail section, the length of the material supporting arm front section is greater than that of the material supporting arm tail section, the movable lug plate is arranged on the material supporting arm front section, and one end of the bearing rod component is hinged with the upper end of the vertical part; the two groups of rotary spring damping bodies are respectively hinged on the outer side surfaces of the tails of the two groups of material supporting arms which are arranged in a mirror symmetry manner; the rotary spring damping body comprises a guide rod, a damping spring, a spring seat and a lifting nut; the lifting nut with bearing bar subassembly screw-thread fit, the side of lifting nut is provided with articulated gudgeon, articulated gudgeon with the through-hole of spring holder side is articulated, damping spring axial suit is in on the guide bar, damping spring's one end is fixed, damping spring's the other end moves about, the top of guide bar slides and sets up in the oblong hole on spring holder upper portion, the bottom of guide bar with the lateral surface of holding in the palm material arm afterbody is articulated.

Further, in the above gravity spring tipper, the rotary spring damping body further comprises a base nut; the guide rod is a screw shaft with a through-long full-thread 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 pressing contact with the upper plane of the spring seat, and the bottom of the damping spring is fixedly mounted on the base nut; the damping spring adopts a cylindrical spiral compression spring or a disc spring; the spring seat is of an L-shaped structure.

Further, in the above gravity spring tipper, the material supporting arm further comprises a lead screw; the bottom of the front section of the material supporting arm is provided with two groups of sliding bearings, and the screw rod is rotatably arranged in the two groups of sliding bearings; the lower end of the bottom of the movable lug plate is connected with the screw rod, the top of the movable lug plate is higher than the front section of the material supporting arm, and the distance between the movable lug plate and the vertical part can be changed by rotating the screw rod; the whole material supporting arm is formed by linearly cutting a thick steel plate with the thickness of 50mm, and a transverse sliding way with the width of 10mm is arranged in the middle of the front section of the material supporting arm.

Furthermore, the gravity spring tipper also comprises a lifting trolley; the lifting trolley comprises a trolley wheel shaft, a trolley pressing plate, a lifting plate and two telescopic beams; the telescopic girder is a long strip-shaped plate-shaped member, a groove slideway is arranged in the middle of the telescopic girder in the height direction, the groove slideway extends from the rear end face of the telescopic girder to the front end face of the telescopic girder, the length direction of the groove slideway is consistent with the length direction of the telescopic girder, the lifting plate is fixedly arranged on the upper surfaces of the two telescopic girders, two ends of the trolley pressing plate are fixedly arranged on the rear end faces of the two telescopic girders, the cross beam is fixedly arranged on the front end face of the telescopic girder, and the lifting plate is fixedly connected with the output end of the driving mechanism; the trolley wheel shaft is arranged in the groove slideway in a sliding manner, two opposite inner side walls of the upright post are provided with guide slideways, and two ends of the trolley wheel shaft are respectively connected with the guide slideways in a sliding manner; the two groups of bearing rod assemblies are arranged in a mirror symmetry mode about the geometric symmetry center line of the lifting trolley.

Further, in the gravity spring tipper, 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, and a fine-tooth nut is arranged in the middle of the trolley pressing plate and is in threaded 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; the lifting trolley also comprises a balancing weight, and the balancing weight is arranged at the other end of the adjusting rod; the fine-toothed nut is a fine-toothed nut with the model number of M36.

Further, in the gravity spring tipping machine, two ends of the trolley wheel shaft are respectively provided with a first deep groove ball bearing, the main frame of the upright column is formed by splicing and welding two oppositely arranged channel steels, the groove of the channel steel is used as the guide slideway, the distance between webs of the two channel steels is greater than the axial length of the trolley wheel shaft, and the distance between flanges of the two channel steels is less than the axial length of the trolley wheel shaft; and two ends of the trolley wheel shaft are connected with the guide slideway in a sliding manner through the first deep groove ball bearings.

Further, in the above gravity spring tipper, the load bearing rod assembly comprises a load bearing rod, a sleeve and a load bearing nut; the sleeve is fixedly arranged on the front side face of the cross beam, the bearing nut is rotatably arranged in the sleeve and is matched with the external thread of the bearing rod, and the lifting nut is matched with the bearing rod in a threaded manner.

Further, in the gravity spring tilting machine, the bearing rod has an external thread, and the external thread of the bearing rod is a triangular external thread with a thread form angle of 60 °; an ear ring of a fork-shaped structure is welded at the bottom of the bearing rod, and a first shaft sleeve made of bronze material is embedded in the ear ring and is hinged with the material supporting arm; and two groups of locknuts are arranged at the top of the bearing rod.

Further, in the above gravity spring tipper, the bearing rod assembly further comprises a handle, a third deep groove ball bearing, an upper gland and a lower gland; four groups of handles are fixedly arranged at the top of the bearing nut; the sleeve is of a cuboid hollow structure, an upper group of step holes and a lower group of step holes are formed in the sleeve, one third deep groove ball bearing is arranged in each group of step holes, and the upper gland and the lower gland are fixedly arranged at the upper end and the lower end of the sleeve respectively; and an upper group of cylindrical shoulders and a lower group of cylindrical shoulders are symmetrically arranged on the outer cylindrical surface of the bearing nut, and the cylindrical shoulders are rotationally connected with the third deep groove ball bearing.

Further, in the gravity spring tipper, the bearing nut is a hollow double-shaft-shoulder cylinder structure, a through-long unthreaded hole is formed in the center of the bearing nut, and a fine-tooth internal thread of M50 is machined in the through-long unthreaded hole.

The analysis shows that the embodiment of the gravity spring tipper disclosed by the utility model realizes the following technical effects:

the gravity type spring tipper relies on the damping buffering of the rotary spring damping body to realize the fixed-angle inclination in the rising process of the hot billet in the material supporting arm, so that the hot billet reaches a critical tipping angle, the rising potential energy is converted into the descending impact kinetic energy in the falling process of the lifting trolley, the instant posture balance breaking of the billet in the critical tipping state contacting the surface of the roller way is realized by the action of instant impact load, the gravity impact turnover is realized, the overheating iron scale on the surface layer of the billet is removed, and the aim of automatic 90-degree turnover of the billet is realized efficiently and conveniently. The gravity type spring tipper can turn over a high-temperature billet discharged from a heating furnace of a section/bar hot rolling production line by 90 degrees before rolling, change the sequence of the conjugate hole type rolling biting surface of the billet between two rollers, improve the control precision of the material type at the inlet of a rolling mill, meet the process requirement of field rolling deformation, remove the overheated iron oxide on the surface of the billet, improve the surface appearance quality of a rolled material, improve the rhythm of field production, reduce the rolling current and reduce process faults. The device has the remarkable characteristics of simple structure, low cost, reliable work, rapid response and strong adaptability, and is a novel steel billet tilting gear which has wide application, high automation degree, convenient installation and strong universality.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. Wherein:

FIG. 1 is a schematic structural diagram of an embodiment of the present invention; FIG. 2 is a schematic structural diagram of a portion of a structure in accordance with an embodiment of the present invention; FIG. 3 is a view in the direction M of FIG. 2; FIG. 4 is a cross-sectional view taken along line E-E of FIG. 3; FIG. 5 is a schematic structural view of a lift cart according to an embodiment of the present invention; FIG. 6 is a cross-sectional view taken along line A-B-C of FIG. 5; FIG. 7 is a schematic structural view of a telescopic beam according to an embodiment of the present invention; FIG. 8 is a schematic view of the structure of the cart platen according to an embodiment of the present invention; FIG. 9 is a schematic structural diagram of an adjusting lever according to an embodiment of the present invention; FIG. 10 is a schematic illustration of a lift plate according to an embodiment of the present invention; FIG. 11 is a schematic view of the structure of the axle of the cart according to an embodiment of the present invention; FIG. 12 is a schematic view of a sleeve according to an embodiment of the present invention; FIG. 13 is a front view of a load nut in accordance with an embodiment of the present invention; FIG. 14 is a top view of a load nut in accordance with an embodiment of the present invention; FIG. 15 is a schematic view of a structure at a bearing bar according to an embodiment of the present invention; FIG. 16 is a schematic structural view of a lift nut according to an embodiment of the present invention; FIG. 17 is a schematic view of a spring seat according to an embodiment of the present invention; FIG. 18 is a schematic view of the movement of the loading arm according to one embodiment of the present invention; FIG. 19 is a pneumatic control schematic of an embodiment of the present invention; FIG. 20 is a schematic view of a load-bearing bar according to an embodiment of the present invention; FIG. 21 is a front view of a material holding arm in accordance with an embodiment of the present invention; FIG. 22 is a top view of a material holding arm according to an embodiment of the present invention; FIG. 23 is a schematic view of the configuration of the transverse and vertical portions of the material holding arm in accordance with one embodiment of the present invention; FIG. 24 is a front view of a movable ear plate in accordance with an embodiment of the present invention; FIG. 25 is a left side view of a movable ear plate in accordance with an embodiment of the present invention; FIG. 26 is a top view of a movable ear plate in accordance with an embodiment of the present invention; FIG. 27 is a schematic process diagram of an initial station in accordance with an embodiment of the present invention; FIG. 28 is a schematic view of an empty lift station in accordance with an embodiment of the present invention; FIG. 29 is a schematic view of a heavy lift tipping station embodiment of the present invention; FIG. 30 is a schematic view of a process of dropping back the gravity flipping station according to an embodiment of the present invention; fig. 31 is a schematic view illustrating a process of returning to the original position after the blank is completely tilted in one embodiment of the present invention.

Description of reference numerals:

15-base, 21-lifting cylinder, 44-upright post, 52-sleeve roller chain, 53-lifting trolley, 531-trolley wheel shaft, 532-first deep groove ball bearing, 533-trolley pressure plate, 534-adjusting rod, 535-balancing weight, 536-second deep groove ball bearing, 5361-bearing block, 537-lifting plate, 538-telescopic beam, 61-cross beam, 62-bearing rod component, 621-bearing rod, 622-handle, 623-upper gland, 624-third deep groove ball bearing, 625-sleeve, 626-bearing nut, 628-lower gland, 63-material supporting arm, 631-first pin shaft, 633-first shaft sleeve, 634-movable lug plate, 635-lead screw, 636-second shaft sleeve, 637-second pin shaft, 64-rotary spring damping body, 641-lifting nut, 642-spring seat, 643-damping spring, 644-guide rod, 645-base nut.

Detailed Description

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. The various examples are provided by way of explanation of the utility model, and not limitation of the utility model. In fact, 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 thereof. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. It is therefore intended that the present invention encompass such modifications and variations as fall within the scope of the appended claims and equivalents thereof.

In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are for convenience of description of the present invention only 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 intended to be broadly construed, and may include, for example, fixed and removable connections; can be directly connected or indirectly connected through intermediate components; the connection may be a wired electrical connection, a wireless electrical connection, or a wireless communication signal connection, and a person skilled in the art can understand the specific meaning of the above terms according to specific situations.

One or more examples of the utility model 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 utility model. As used herein, the terms "first," "second," "third," and "fourth," etc. may be used interchangeably to distinguish one component from another and are not intended to indicate the position or importance of an individual component.

As shown in fig. 1 to 31, according to an embodiment of the present invention, there is provided a gravity spring tilting machine, which includes a driving mechanism, a vertical column 44, a cross beam 61, two sets of load bearing rod assemblies 62, two sets of material supporting arms 63, and two sets of rotary spring damping bodies 64; the driving mechanism is fixedly arranged on the upright post 44, the two groups of bearing rod assemblies 62 are fixedly arranged at two ends of the cross beam 61, the two groups of bearing rod assemblies 62 are arranged in mirror symmetry about the geometric symmetry center line of the driving mechanism, and the output end of the driving mechanism is fixedly connected with the center of the cross beam 61; the material supporting arm 63 comprises a transverse part, a vertical part and a movable lug plate 634, the lower end of the vertical part is fixedly connected with the transverse part and divides the transverse part into a material supporting arm front section and a material supporting arm tail section, the length of the material supporting arm front section is greater than that of the material supporting arm tail section, the movable lug plate 634 is arranged on the material supporting arm front section, and one end of the bearing rod assembly 62 is hinged with the upper end of the vertical part; two groups of rotary spring damping bodies 64 are respectively hinged on the outer side surfaces of the tails of the two groups of material supporting arms 63 which are arranged in a mirror symmetry manner; the rotary spring damper 64 includes a guide rod 644, a damping spring 643, a spring seat 642, and a lift nut 641; the lifting nut 641 is in threaded fit with the bearing rod assembly 62, a hinge trunnion is arranged on the side surface of the lifting nut 641 and is hinged with a through hole in the side surface of a spring seat 642, a damping spring 643 is axially sleeved on a guide rod 644, one end of the damping spring 643 is fixed, the other end of the damping spring 643 moves, the top of the guide rod 644 is slidably arranged in a long oval hole in the upper portion of the spring seat 642, and the bottom of the guide rod 644 is hinged with the outer side surface of the tail portion of the material supporting arm 63.

In the above embodiment, one end of the upright post 44 is fixedly disposed, one end of the upright post 44 can be fixedly mounted on the base 15, the material supporting arms 63 are a most downstream ring in the gravity type spring tipper, and are also the most central key execution component in the whole gravity type spring tipper, the material supporting arms 63 are two groups in total, the two groups of material supporting arms 63 are arranged in a mirror image bilateral symmetry manner with respect to the geometric symmetry center line of the lifting trolley 53, and the design of the process movement track of the material supporting arms 63 directly affects the action accuracy and the operation efficiency of billet turning. The material supporting arm 63 is of an asymmetric T-shaped plate frame structure, the material supporting arm 63 comprises a transverse portion, a vertical portion and a movable lug plate 634, the lower end of the vertical portion is fixedly connected with the transverse portion, the transverse portion is divided into a material supporting arm front section and a material supporting arm tail section, the material supporting arm front section bearing area is slightly long, the material supporting arm front section bearing area is used for lifting steel billets, and the material supporting arm tail section is short and mainly used for placing rotary spring damping 64. The material supporting arm tail section is welded and fixed with a first pin 631 which is in hinged fit with the guide rod 644 in a rotating mode, and is respectively provided with a set of rotary spring damping bodies 64, the rotary spring damping bodies 64 are totally two sets, and the two sets of rotary spring damping bodies 64 are respectively hinged to the outer side faces of two sets of material supporting arms 63 which are arranged in mirror symmetry. The rotary spring damping body 64 is mainly formed by combining a guide rod 644, a damping spring 643, a spring seat 642, a lifting nut 641 and other components together, and mainly functions to provide a reverse balance damping moment when the material supporting arm 63 is overturned under a heavy load, slow down swinging impact, provide a reset overturning moment when the material supporting arm 63 continues to descend under no load after unloading a billet, enable the material supporting arm to swing again and adjust to an initial horizontal position, and prepare for the posture of the next round of billet overturning. The lifting nut 641 is sleeved on the bearing rod 621 and can slide up and down along the axis of the bearing rod, a hinged trunnion is arranged on the side surface of the lifting nut 641 and is rotatably hinged with the spring seat 642, the main function of the lifting nut is to adjust the horizontal included angle between the guide rod 644 and the material supporting arm 63, further adjust the action direction of the elastic force output by the damping spring 643, enable the guide rod 644 to move flexibly, enable the top of the guide rod 644 to freely slide in a long elliptical hole in the upper part of the spring seat 642 without stagnation, and keep the horizontal state after the material supporting arm 63 is unloaded and reset. After the lifting nut 641 is adjusted and positioned by a field experiment, the upper nut and the lower nut screwed on the bearing rod 621 can be used for fixing and locking. If there is a significant retardation in the movement of the guide rod 644, the rotational position between the upper nut and the lower nut on the load-bearing rod 621 can be adjusted to make the upper plane and the lower plane of the lifting nut 641 not tightly locked, but leave a suitable fit clearance, so that the lifting nut 641 can slide up and down on the load-bearing rod 621 to a small extent, and the axial degree of freedom is retained. The gravity type spring tipper realizes fixed-angle inclination in the rising process of a hot steel billet in a material supporting arm 63 by means of damping buffering of a rotary spring damping body 64, so that the hot steel billet reaches a critical tipping angle, rising potential energy is converted into descending impact kinetic energy in the falling process, attitude balance is broken instantaneously when the steel billet in a critical tipping state contacts the surface of a roller way under the action of instantaneous impact load, gravity impact overturning is realized, overheated iron scales on the surface layer of the steel billet are removed, and the purpose of automatic 90-degree overturning of the steel billet is realized efficiently and conveniently. As shown in fig. 27 to fig. 31, the lifting motion of the lifting carriage 53 in the upright column 44 makes the material supporting arm 63 perform its own elastic damping swing with a downward fixed angle while performing an upward linear motion, so as to turn the billet to a tipping angle of critical balance, and during the rapid linear descending process of the material supporting arm, the kinetic energy of gravity impact of the billet itself is relied on to break the attitude balance of the hot billet, thereby achieving 90 ° turning of the billet at the moment of impact contact, and simultaneously removing the scale on the surface of the billet, which specifically includes 5 steps: the method comprises the following steps of firstly, initial station, secondly, no-load lifting station, thirdly, heavy-load lifting tipping station, fourthly, falling back to the gravity overturning station, and fifthly, restoring the blank to the original position after the blank is tipped. The gravity type spring tipper can turn over a high-temperature billet discharged from a heating furnace of a section/bar hot rolling production line by 90 degrees before rolling, change the sequence of the conjugate hole type rolling biting surface of the billet between two rollers, improve the control precision of the material type at the inlet of a rolling mill, meet the process requirement of field rolling deformation, remove the overheated iron oxide on the surface of the billet, improve the surface appearance quality of a rolled material, improve the rhythm of field production, reduce the rolling current and reduce process faults. The device has the remarkable characteristics of simple structure, low cost, reliable work, rapid response and strong adaptability, and is a novel steel billet tilting gear which has wide application, high automation degree, convenient installation and strong universality.

Preferably, as shown in fig. 1 and 17, in one embodiment of the present invention, the rotary spring damper body 64 further includes a base nut 645; the guide rod 644 is a screw shaft with a full-length full-thread structure, and the base nut 645 is in threaded fit with the lower part of the guide rod 644; the top of the damping spring 643 is in pressing contact with the upper plane of the spring seat 642, and the bottom of the damping spring 643 is vertically and fixedly arranged on the base nut 645; preferably, the damping spring 643 adopts a cylindrical helical compression spring or a disc spring; preferably, the spring seat 642 is a right-angled L-shaped structure. The spring seat 642 is of a right-angled L-shaped structure, a long elliptical hole is milled on the upper plane of the spring seat 642 and matched with the guide rod 644, the long elliptical hole is a through hole, the top of the long elliptical hole can slide in a long elliptical hole slideway, the long elliptical hole refers to the situation that two ends of the cross section of the hole are circular arcs, and the corresponding end points of the two circular arcs are connected by straight lines to form a long elliptical hole shape. The through hole on the side of the spring seat 642 is hinged with the pin on the lifting nut 641, so that the spring seat 642 can rotate freely around the axis of the pin of the lifting nut 641 to adapt to the change of the motion matching angle of the spring seat with the damping spring 643 and the guide rod 644, the freedom of movement is reserved, and the action direction of the output elastic force is ensured not to incline to cause unbalance loading and sliding retardation. The guide rod 644 is a screw shaft of a full-length and full-thread structure, and a washer and a base nut 645 are provided at the lower part of the guide rod and screwed with the guide rod. The damping spring 643 is axially sleeved on the guide rod 644, one end of the damping spring 643 is fixed, and the other end of the damping spring 643 is in a floating supporting and fixing mode, 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 adjusting floating end and is vertically installed on the base nut 645 and can slide up and down along the axis of the guide rod 644 along with the base nut 645, the base nut 645 mainly plays a role in installing a base on the spring, when the base nut 645 is rotated, the pre-compression amount of the damping spring 643 can be adjusted, the pre-tightening 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 heavy-load inclined swinging and can flexibly reset in a no-load horizontal mode. The damping spring 643 may be a cylindrical helical compression spring or a disc spring according to actual requirements on site. In one embodiment of the utility model, the disc springs are preferably selected, and the rigidity and load characteristic curve of the combined springs are changed by matching different combination modes (folding or involution) and the number of the disc springs, so that the actual working condition requirements of the site are met.

Preferably, as shown in fig. 2 to 4, 18, 21 to 26, in one embodiment of the present invention, the holding arm 63 further includes a lead screw 635; the bottom of the front section of the material supporting arm is provided with two groups of sliding bearings, the lead screw 635 is rotatably arranged in the two groups of sliding bearings, the lower end of the bottom of the movable lug plate 634 is connected with the lead screw 635, the top of the movable lug plate 634 is higher than the front section of the material supporting arm, and the distance between the movable lug plate 634 and the vertical part can be changed by rotating the lead screw 635; preferably, the whole material supporting arm 63 is formed by linearly cutting a thick steel plate with the thickness of 50mm, and a transverse sliding rail with the width of 10mm is arranged in the middle of the front section of the material supporting arm. The design of activity otic placode 634 bottom has the internal thread to close soon with the external screw thread profile of lead screw 635, constitute a set of manual slip screw pair, when manual forward or reverse rotation lead screw 635, activity otic placode 634 can wholly slide along the vertical reciprocal straight line of the axis of lead screw 635, thereby drive the dog of activity otic placode 634 top welded fastening and control rectilinear movement along the slide in the middle of holding in the palm material arm 63, with the billet that adapts to different cross-section specifications in the vertical different positions department of raceway lift the accurate position degree adjustment demand of complex with holding in the palm material arm 63, make the billet lean in the best cooperation position department on holding in the palm material arm 63, the upset. The other main function of the movable ear plate 634 is to restrain the transverse sliding of the billet, prevent the inclined billet from sliding off the upper surface of the material supporting arm 63 during the ascending process of the lifting trolley 53, and during the rapid descending process of the material supporting arm 63, the moment when the billet contacts the ground and overturns plays a role in bearing and overturning support, so that the inclined billet breaks the moment dynamic balance of the billet inclination state along the side line contacting with the movable ear plate 634 under the actions of the billet dead weight and descending impact load, and passes over the dynamic balance inclination angle, and the fixed pivot rotates, thereby realizing the automatic overturning of the billet. The whole material supporting arm 63 is formed by linearly cutting a thick steel plate with the thickness of 50mm, and a slideway with the width of 10mm is reserved in the middle for assembling the movable lug plate 634, so that the movable lug plate 634 can transversely move left and right when transversely adjusting.

Preferably, as shown in fig. 2-4, 12 and 20, in one embodiment of the present invention, the load bearing bar assembly 62 includes a load bearing bar 621, a sleeve 625 and a load bearing nut 626; the sleeve 625 is fixedly arranged on the front side surface of the cross beam 61, the bearing nut 626 is rotatably arranged in the sleeve 625, the bearing nut 626 is matched with the external thread of the bearing rod 621, and the lifting nut 641 is matched with the bearing rod 621 through the thread. The bearing rod components 62 are a set of sliding screw pair mechanism with nuts supporting rotation and screw rod axial linear motion, two sets of bearing rod components 62 are designed totally, and the bearing rod components 62 are directly welded and fixed on the cross beam 61 and are arranged in mirror symmetry relative to the geometric symmetry center line of the lifting trolley 53. The sleeve 625 is designed as a rectangular hollow structure, and has an upper and a lower sets of stepped holes bored therein, two sets of third deep groove ball bearings 624 are separately and independently sleeved, and axially and bidirectionally fixed by an upper gland 623 and a lower gland 628, respectively, to form a set of complete integral double rolling bearing support base, which is welded and fixed to the side surface of the cross beam 61, and finally integrally welded with the cross beam 61 to the front end surface of a telescopic beam 538 in the lifting trolley 53, and fixedly connected with the lifting trolley 53 as a rigid integral component.

Preferably, as shown in fig. 1, 13 and 14, in an embodiment of the present invention, the bearing nut 626 is a hollow double-shoulder cylinder structure, a through long unthreaded hole is drilled in the center of the cylinder, M50 fine internal threads are machined, the bearing nut is designed to be screwed with the external thread profile of the bearing rod 621, two sets of upper and lower cylindrical shoulders are symmetrically designed on the outer cylindrical surface of the bearing nut, the upper and lower cylindrical shoulders are respectively sleeved on the inner rings of two sets of third deep groove ball bearings 624 of the sleeve 625, and 4 sets of handles 622 are welded and fixed on the top of the bearing nut 626, so as to facilitate labor saving operation. When the handle 622 is rotated forward or backward, the bearing nut 626 can freely rotate around its own axis in a circumferential direction flexibly under the bearing and antifriction of the third deep groove ball bearing 624 in the sleeve 625, and the bearing rod 621 matched with the bearing nut 626 in a rotating mode can synchronously and linearly ascend or descend, so that the space distance between the working surface of the material supporting arm 63 and the lower bottom surface of the steel billet can be accurately adjusted, and the design stroke of the driving mechanism can be compensated to the maximum extent under the working condition that the base 15 is fixedly installed and cannot be used for continuously adjusting the integral elevation of the equipment.

Preferably, as shown in fig. 1 to 4, 15 and 20, in one embodiment of the present invention, the bearing rod 621 has an external thread, and the external thread of the bearing rod 621 is a triangular external thread having a thread form angle of 60 °; an ear ring of a fork-shaped structure is welded at the bottom of the bearing rod 621, and a first shaft sleeve 633 made of a bronze material is embedded in the ear ring and hinged with the material supporting arm 63; preferably, two sets of locknuts are disposed on the top of the bearing bar 621. Bearing bar 621 is long and thin rod-shaped structure, the tooth type angle is 60 triangle-shaped external screw threads, the bottom welding has the earrings of fork type structure, the embedded antifriction bronze material's of adorning of earrings first axle sleeve 633, with holding in the palm material arm 63 activity hinge, it relies on the tooth type auto-lock nature anticreep location of the triangle-shaped screw thread of above-mentioned slip spiral pair to wait to hold in the palm material arm 63 installation elevation adjustment after targetting in place, prevent that bearing bar 621 suddenly became invalid gliding in bearing nut 626, in addition, the bearing bar 621 top is furnished with two sets of lock nuts soon and is relaxed, increase fixed connection's reliability, prevent to become invalid and weigh down. The top of the vertical part of the material supporting arm 63 is provided with a set of sliding bearing revolute pair, the first shaft sleeve 633 is assembled in an embedded manner and hinged with a fork-shaped structure earring at the bottom of the bearing rod 621, and the first shaft sleeve can freely rotate and swing left and right around the axis of the second pin 637 so as to change the horizontal inclination angle of the material supporting arm 63 and the billet. The bottom design of holding in the palm the material arm anterior segment has two sets of slide bearings that there is obvious size difference in the interior outer hole to embedding assembly sliding antifriction's second axle sleeve 636, so that the dismouting makes lead screw 635 can follow the terminal surface of holding in the palm the material arm anterior segment, and vertical the suit is in two sets of integral slide bearings.

Preferably, as shown in fig. 2 to 10, in one embodiment of the present invention, a lifting trolley 53 is further included; the lifting trolley 53 comprises a trolley wheel shaft 531, a trolley pressing plate 533, a lifting plate 537 and two telescopic beams 538; the telescopic beams 538 are long strip-shaped plate-shaped members, the middle parts of the telescopic beams 538 in the height direction are provided with groove slideways, the groove slideways extend from the rear end surfaces of the telescopic beams 538 to the front end surfaces of the telescopic beams 538, the length directions of the groove slideways are consistent with the length directions of the telescopic beams 538, the lifting plates 537 are fixedly arranged on the upper surfaces of the two telescopic beams 538, the two ends of the trolley pressing plates 533 are fixedly arranged on the rear end surfaces of the two telescopic beams 538, the cross beams 61 are fixedly arranged on the front end surfaces of the telescopic beams 538, and the lifting plates 537 are fixedly connected with the output ends of the driving mechanisms; the trolley wheel shaft 531 is arranged in the groove slideway in a sliding manner, two opposite inner side walls of the upright post 44 are provided with guide slideways, and two ends of the trolley wheel shaft 531 are respectively connected with the guide slideways in a sliding manner; the two sets of bearing bar assemblies 62 are arranged in mirror symmetry about the geometric centre line of symmetry of the lift car 53. The lifting trolley 53 is an extremely important sliding lifting component, and mainly functions to change the longitudinal position coordinates of the bearing rod assembly 62 and the material supporting arm 63, convert the power output of the driving mechanism into the gravitational potential energy of the height of the billet, and provide energy storage for the kinetic energy impact of the subsequent billet falling and overturning. The lifting trolley 53 is designed as a rectangular frame assembly structure, and is composed of two telescopic beams 538 on two side faces, a trolley pressing plate 533 on the back face and a lifting plate 537 on the top portion. The top lifting plate 537 is welded directly to the upper surface of the two telescopic beams 538 to transfer the output tension of the drive mechanism.

Preferably, as shown in fig. 1 to 11, in one embodiment of the present invention, the lifting trolley 53 further comprises an adjusting rod 534 and a second deep groove ball bearing 536; a step blind hole is formed in the geometric symmetry center line of the trolley wheel shaft 531, the second deep groove ball bearing 536 is arranged in the step blind hole, and a fine-thread nut is arranged in the middle of the trolley pressing plate 533 and is in threaded fit with the adjusting rod 534; one end of the adjusting rod 534 passes through the trolley pressing plate 533 to be matched with the second deep groove ball bearing 536; preferably, the lifting trolley 53 further comprises a weight block 535, and the weight block 535 is arranged at the other end of the adjusting rod 534; preferably, the fine-pitch nut is a fine-pitch nut of type M36.

In the above embodiment, the trolley pressing plate 533 is fixed to the rear end surfaces of the two telescopic beams 538 by bolts, and a fine nut of M36 is screwed to the adjusting rod 534 at the middle position thereof. The adjusting rod 534 is provided with a counterweight 535 to balance the additional tilting moment of the supporting arm 63 under the working condition of lifting the supported steel billet, so as to increase the stability of the upright post 44. In the actual use process, the counterweight block 535 can be rotated on the adjusting rod 534 on site according to the actual weight of steel billets of different specifications, and the transverse position coordinate of the counterweight block is changed, so that the moment arm distance of the gravity center of the counterweight block 535 relative to the upright post 44 is changed, the actual requirement of on-site tipping moment balance is met, the stability and flexibility of system motion are improved, and the response time is shortened. The telescopic beam 538 is a long strip plate-shaped member, a groove slideway is milled in the middle of the telescopic beam, and the upper surface and the lower surface of a trolley wheel shaft 531 with a square cross section structure are coated, so that the telescopic beam can slide longitudinally along the slideway. The trolley wheel shaft 531 is milled with a step blind hole at the position of the geometric symmetry center line, and a second deep groove ball bearing 536 is designed to be matched with the adjusting rod 534, so that the adjusting rod 534 and the trolley wheel shaft 531 are connected into an integral component which can rotate relatively movably and can synchronously and longitudinally slide along the axis of the adjusting rod 534. Wherein the second deep groove ball bearing 536 has a model number of 200. When the adjusting rod 534 is manually rotated, because the trolley wheel shaft 531 is stationary relative to the upright post 44, the internal threads on the trolley pressing plate 533 can longitudinally reciprocate along the axis of the adjusting rod 534, so as to drive the two telescopic beams 538 to transversely slide and adjust along their own slideways on the upper and lower surfaces of the trolley wheel shaft 531, and finally change the plane position coordinate of the material supporting arm 63 relative to the steel billet, so as to adapt to the special working condition that the steel billet cannot be touched by the material supporting arm 63 or the contact amount is small due to the limitation of the layout of the installation structure on the site under the condition that the base 15 is installed and positioned.

Preferably, as shown in fig. 2 to 6, in an embodiment of the present invention, two ends of the trolley axle 531 are respectively provided with the first deep groove ball bearings 532, the main frame of the upright column 44 is formed by splicing and welding two oppositely arranged channel steels, the groove of the channel steel is used as a guide slideway, the distance between the webs of the two channel steels is greater than the axial length of the trolley axle 531, and the distance between the flanges of the two channel steels is less than the axial length of the trolley axle 531; two ends of the trolley wheel shaft 531 are connected with the guide slide way in a sliding way through a first deep groove ball bearing 532. The main frames at two sides of the upright post 44 adopt 180 hot rolled channel steel, the channel steel groove is used as a guide slideway, the first deep groove ball bearings 532 in the trolley wheel shaft 531 are directly arranged to enable the trolley wheel shaft to roll straightly up and down along the channel steel groove, bearing stoppers 5361 are welded at the inner sides of the upper flange and the lower flange of the channel steel to prevent the axial movement of the trolley wheel shaft 531, the lifting trolley 53 only keeps the longitudinal freedom degree of up-and-down movement under the working condition of reducing the lifting retardation by adopting rolling friction, the left-and-right transverse freedom degree is limited, namely the friction retardation is reduced, the flexibility and the accuracy of the lifting movement of the lifting trolley 53 are improved, the first deep groove ball bearings 532 are respectively assembled at two sides of the trolley wheel shaft 531, the deep groove stoppers are enabled to roll and slide up and down in the channel steel grooves at two sides of the upright post 44 by adopting the form of rolling friction, in order to prevent the axial movement of the first deep groove ball bearings 532, the bearing stoppers 5361 are welded at the side edges of the upper flange and the channel steel of the upright post 44, and (3) assembling a fixed shaft system, wherein the first deep groove ball bearing 532 is a 412 deep groove ball bearing. The driving mechanism pulls the lifting trolley 53 to move linearly up and down along the main frame channel steel on the two sides of the upright post 44.

In one embodiment of the utility model, the electric control system of the gravity spring tipper adopts PLC auxiliary control, a light-sensitive proximity switch can be additionally arranged at a proper position of a billet conveying roller way, when a discharged billet is conveyed to a position close to a steel-turning area, a sensor captures a thermal state light-sensitive signal and transmits the thermal state light-sensitive signal to a remote main control box through a data line, and a direct-current digital electric signal is output after the PLC logic programming of an internal core part of the sensor, so that an on-site pneumatic electromagnetic directional valve is sequentially powered on to control the movement of a driving mechanism, and the 90-degree turning of the thermal state billet on the roller way in the lifting and falling process is realized.

The driving mechanism of the gravity spring tipper may be selected from a variety of mechanisms as long as the driving mechanism can drive the lift carriage 53 to move up and down linearly along the main frame channels on both sides of the column 44, and for example, a common motor or other power device may be used as the driving mechanism. As shown in fig. 1 and fig. 19, preferably, in an embodiment of the present invention, the driving mechanism employs a lifting cylinder 21, the lifting cylinder 21 is connected to a lifting plate 537 in the lifting carriage 53 through a sleeve roller chain 52 to drive the lifting carriage 53 to move linearly up and down along main frame channel steel on both sides of the upright post 44, a pneumatic control loop of a solenoid directional valve of the lifting cylinder 21 employs a pressure reducing valve and a throttle valve to control pressure and flow of a pneumatic system, regulate and control its operation speed, thereby changing a descending speed of the lifting carriage 53 and reducing gravity impact when the blank is turned over, meanwhile, a buffer damping spring can be additionally arranged on a lower bottom surface of the upright post 44, and through instantaneous collision contact with a telescopic beam, kinetic energy of descending impact of the lifting carriage 53 is absorbed, gravity overload impact is reduced, and service life of the apparatus is prolonged, the buffer spring can be selected according to actual requirements on site, either a cylindrical helical compression spring or a disc spring, the disc springs are preferably selected, and the rigidity and load characteristic curve of the combined springs are changed by selecting different combination modes (folding or involution) and the number of the disc springs, so that the requirements of actual working conditions on site are met. Meanwhile, the lifting cylinder 21 adopts an SC series cylinder with an internal piston provided with a magnetic ring, when the lifting cylinder 21 acts to cause the lifting trolley 53 to rise to a certain height, an electromagnetic inductor arranged on a pull rod outside the cylinder receives a magnetic signal of the magnetic ring of the internal piston of the cylinder, synchronously converts the magnetic signal into a direct current digital electrical signal, and transmits the direct current digital electrical signal to an electromagnetic directional valve of the cylinder, so that the cylinder stops acting instantaneously or finishes reverse movement synchronously, and the action flow of turning the billet by 90 degrees is finished. Therefore, the telescopic limit position of the piston rod of the air cylinder can be controlled by adjusting the position of the electromagnetic inductor on the pull rod of the air cylinder, and the full-automatic control of the blank overturning process is realized by the logic programming of the electric control system PLC. If a common cylinder is selected, two sets of electromagnetic induction switches are additionally arranged at a certain proper position of the stroke of the upright post or the cylinder piston to realize the automatic control positioning action. Because the weights of blanks with different specifications have deviation, corresponding critical tipping angles of the blanks are obviously different, the actual installation position of the electromagnetic induction switch needs to be determined after field test, and corresponding adjustment and change need to be made according to the change of the specifications of the blanks. Thus, the gravity spring tipper can make the supporting arm 63 do linear reciprocating motion up and down and turn the billet to a critical balanced tipping angle by the up-and-down sliding of the lifting trolley 53, and impact kinetic energy by the gravity of the billet during the rapid linear descending process of the supporting arm 63, so as to realize instant 90-degree turning of hot billet impact grounding and simultaneously remove the scale on the surface of the billet.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: the gravity type spring tipper realizes fixed-angle inclination in the rising process of a hot billet in a material supporting arm 63 by means of damping buffering of a rotary spring damping body 64, so that the hot billet reaches a critical tipping angle, rising potential energy is converted into falling impact kinetic energy in the falling process of a lifting trolley 53, and the posture balance is broken instantaneously when the billet in a critical tipping state contacts the surface of a roller way under the action of instantaneous impact load, so that gravity impact overturning is realized, an overheated iron scale on the surface layer of the billet is removed, and the aim of automatically overturning the billet by 90 degrees is efficiently and conveniently realized. The gravity type spring tipper can turn over a high-temperature billet discharged from a heating furnace of a section/bar hot rolling production line by 90 degrees before rolling, change the sequence of the conjugate hole type rolling biting surface of the billet between two rollers, improve the control precision of the material type at the inlet of a rolling mill, meet the process requirement of field rolling deformation, remove the overheated iron oxide on the surface of the billet, improve the surface appearance quality of a rolled material, improve the rhythm of field production, reduce the rolling current and reduce process faults. The device has the remarkable characteristics of simple structure, low cost, reliable work, rapid response and strong adaptability, and is a novel steel billet tilting gear which has wide application, high automation degree, convenient installation and strong universality.

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

Claims (10)

1. A gravity type spring tipper is characterized by comprising a driving mechanism, a stand column, a cross beam, two groups of bearing rod assemblies, two groups of material supporting arms and two groups of rotary spring damping bodies;

the driving mechanism is fixedly arranged on the upright post, the two groups of bearing rod assemblies are fixedly arranged at two ends of the cross beam, the two groups of bearing rod assemblies are arranged in a mirror symmetry mode about a geometric symmetry center line of the driving mechanism, and an output end of the driving mechanism is fixedly connected with the center of the cross beam;

the material supporting arm comprises a transverse part, a vertical part and a movable lug plate, the lower end of the vertical part is fixedly connected with the transverse part and divides the transverse part into a material supporting arm front section and a material supporting arm tail section, the length of the material supporting arm front section is greater than that of the material supporting arm tail section, the movable lug plate is arranged on the material supporting arm front section, and one end of the bearing rod component is hinged with the upper end of the vertical part;

the two groups of rotary spring damping bodies are respectively hinged on the outer side surfaces of the tails of the two groups of material supporting arms which are arranged in a mirror symmetry manner;

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

the lifting nut with bearing bar subassembly screw-thread fit, the side of lifting nut is provided with articulated gudgeon, articulated gudgeon with the through-hole of spring holder side is articulated, damping spring axial suit is in on the guide bar, damping spring's one end is fixed, damping spring's the other end moves about, the top of guide bar slides and sets up in the oblong hole on spring holder upper portion, the bottom of guide bar with the lateral surface of holding in the palm material arm afterbody is articulated.

2. The gravity spring tipper of claim 1, wherein said rotary spring damper further comprises a base nut;

the guide rod is a screw shaft with a through-long full-thread 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 pressing contact with the upper plane of the spring seat, and the bottom of the damping spring is fixedly mounted on the base nut;

the damping spring adopts a cylindrical spiral compression spring or a disc spring;

the spring seat is of an L-shaped structure.

3. The gravity spring tipper of claim 1, wherein said loader arm further comprises a lead screw;

the bottom of the front section of the material supporting arm is provided with two groups of sliding bearings, and the screw rod is rotatably arranged in the two groups of sliding bearings;

the lower end of the bottom of the movable lug plate is connected with the screw rod, the top of the movable lug plate is higher than the front section of the material supporting arm, and the distance between the movable lug plate and the vertical part can be changed by rotating the screw rod;

the whole material supporting arm is formed by linearly cutting a thick steel plate with the thickness of 50mm, and a transverse sliding way with the width of 10mm is arranged in the middle of the front section of the material supporting arm.

4. The gravity spring tipper of claim 1, further comprising a lift car;

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

the telescopic girder is a long strip-shaped plate-shaped member, a groove slideway is arranged in the middle of the telescopic girder in the height direction, the groove slideway extends from the rear end face of the telescopic girder to the front end face of the telescopic girder, the length direction of the groove slideway is consistent with the length direction of the telescopic girder, the lifting plate is fixedly arranged on the upper surfaces of the two telescopic girders, two ends of the trolley pressing plate are fixedly arranged on the rear end faces of the two telescopic girders, the cross beam is fixedly arranged on the front end face of the telescopic girder, and the lifting plate is fixedly connected with the output end of the driving mechanism;

the trolley wheel shaft is arranged in the groove slideway in a sliding manner, two opposite inner side walls of the upright post are provided with guide slideways, and two ends of the trolley wheel shaft are respectively connected with the guide slideways in a sliding manner;

the two groups of bearing rod assemblies are arranged in a mirror symmetry mode about the geometric symmetry center line of the lifting trolley.

5. The gravity spring tipper of claim 4, wherein said lift car further comprises an adjustment bar 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 threaded 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;

the lifting trolley also comprises a balancing weight, and the balancing weight is arranged at the other end of the adjusting rod;

the fine-toothed nut is a fine-toothed nut with the model number of M36.

6. The gravity spring tipper according to claim 4, wherein said trolley wheel axle is provided at each end with a first deep groove ball bearing, said upright post main frame is made by welding two oppositely disposed channel steels, the groove of said channel steel is used as said guiding slideway, the distance between the webs of said channel steels is greater than the axial length of said trolley wheel axle, and the distance between the flanges of said channel steels is less than the axial length of said trolley wheel axle;

and two ends of the trolley wheel shaft are connected with the guide slideway in a sliding manner through the first deep groove ball bearings.

7. The gravity spring tipper of claim 1, wherein said load bearing bar assembly comprises a load bearing bar, a sleeve, and a load bearing nut;

the sleeve is fixedly arranged on the front side face of the cross beam, the bearing nut is rotatably arranged in the sleeve and is matched with the external thread of the bearing rod, and the lifting nut is matched with the bearing rod in a threaded manner.

8. The gravity spring tipper of claim 7, wherein said load bar has an external thread, and wherein said external thread of said load bar is a triangular external thread having a profile angle of 60 °;

an ear ring of a fork-shaped structure is welded at the bottom of the bearing rod, and a first shaft sleeve made of bronze material is embedded in the ear ring and is hinged with the material supporting arm;

and two groups of locknuts are arranged at the top of the bearing rod.

9. The gravity spring tipper of claim 7, wherein said load bearing bar assembly further comprises a handle, a third deep groove ball bearing, an upper gland, and a lower gland;

four groups of handles are fixedly arranged at the top of the bearing nut;

the sleeve is of a cuboid hollow structure, an upper group of step holes and a lower group of step holes are formed in the sleeve, one third deep groove ball bearing is arranged in each group of step holes, and the upper gland and the lower gland are fixedly arranged at the upper end and the lower end of the sleeve respectively;

and an upper group of cylindrical shoulders and a lower group of cylindrical shoulders are symmetrically arranged on the outer cylindrical surface of the bearing nut, and the cylindrical shoulders are rotationally connected with the third deep groove ball bearing.

10. The gravity spring tipper of claim 7, wherein said load bearing nut is a hollow double shoulder cylinder, said load bearing nut having a through-hole in the center, said through-hole having a fine-pitch internal thread of M50 machined therein.

Images