CN111646269A

CN111646269A - Anti-tipping device for radial coil unloading of large-diameter-width-ratio coil and coil loading and unloading method

Info

Publication number: CN111646269A
Application number: CN202010381194.XA
Authority: CN
Inventors: 闫成琨; 张凯; 计江; 谢磊; 王悦晗; 钱广阔; 王煜
Original assignee: China National Heavy Machinery Research Institute Co Ltd
Current assignee: China National Heavy Machinery Research Institute Co Ltd
Priority date: 2020-05-08
Filing date: 2020-05-08
Publication date: 2020-09-11

Abstract

The invention provides an anti-tipping device for radial coil unloading of a large-diameter-width-ratio coil and a coil loading and unloading method. This device is through both sides total four standing rod to the centre gripping of big footpath aspect ratio roll coil of strip, has strengthened big footpath aspect ratio roll coil of strip and has radially unloaded the erect stability and the anti external disturbance ability of roll process to reach the effect that prevents the roll coil of strip and tumble.

Description

Anti-tipping device for radial coil unloading of large-diameter-width-ratio coil and coil loading and unloading method

Technical Field

The invention belongs to an auxiliary device for radial coil unloading in the production process of a metal coil, and particularly relates to an anti-tipping device and a coil loading and unloading method for radial coil unloading of a coil with a large radial-to-width ratio.

Background

In the production of the metal strip coil, the coil loading and unloading process is a necessary link. The direction of upward coil discharge is divided into two types, namely radial coil discharge and axial coil discharge, according to different types of winding drums of the uncoiler and the coiler. The mode is that the coil conveying process of the coil conveying trolley is always in the radial plane of a vertically placed metal coil, the coil is conveyed to the middle of the double-column-head uncoiler, the coil is lifted to the position where the central axis of a coil inner hole and the coiling blocks of the double-column-head uncoiler are coaxial, then the uncoilers on two sides draw close to the coil, the coiling blocks on two sides are respectively inserted into the coil inner hole from two sides and clamp the coil, then the coil conveying trolley descends and exits an uncoiling area, and the radial coil feeding process is completed. The radial coil stripping process is the reverse of the coil loading process.

The ratio of the outer diameter to the width of the coil is called the aspect ratio. According to production experience, in the process of transporting the coil of strip with the diameter-width ratio smaller than 5, the coil of strip is relatively stable in the normal disturbance range in the transportation process, and the coil of strip can be vertically placed on a coil transporting trolley bracket to directly carry out coil loading and unloading transportation. However, when the aspect ratio is greater than 5, the stand stability of the coil begins to deteriorate, and the coil tends to tip over to both sides even under normal disturbance. The common solutions at present are:

(1) the steel pipes are manually inserted at two sides of the band coil, so that the blocking effect is achieved.

The method cannot deal with the production tasks with more width specifications, is very inconvenient to operate manually, and is easy to cause accidents particularly when the steel pipe needs to be manually taken out from the narrow space between the uncoilers at two sides after the coil enters the middle of the uncoiler.

(2) The manufacturing precision of the trolley body and the track is comprehensively improved, the number of the sensors is increased, and the control precision of the electric and hydraulic driving systems is improved, so that the running stability of the coil conveying trolley is further improved.

The method needs to invest in higher cost, has higher requirements on the shape regularity of the coil, but has weak external interference resistance, and is easy to tip over when the track is subjected to foreign matters, unexpected shutdown or manual misoperation and the like.

Disclosure of Invention

The invention aims to provide an anti-tipping device and a roll-up and roll-down method for radial roll-down of a large-diameter-to-width-ratio roll coil, so as to overcome the technical defects.

In order to solve the technical problem, the invention provides an anti-tipping device for radial coil unloading of a large-diameter-width-ratio coil, which comprises a bracket for lifting the coil, wherein a double-output oil cylinder is fixedly arranged below the middle of the bracket, the rod head of each oil cylinder rod at the two ends of the double-output oil cylinder is connected with a swing arm capable of rotating around a sliding pin shaft through a sliding pin shaft, the swing arm is connected with centering devices through a flat plate, the two centering devices are parallel and opposite, and the coil is clamped between the two centering devices.

Preferably, the lower end of the swing arm is connected to the rod head of the cylinder rod of the double-output cylinder through a sliding pin shaft, the middle of the swing arm is connected with the bracket through a pin shaft and can rotate around the pin shaft as the center, the upper part of the swing arm is fixedly connected with the flat plate, and the middle of the flat plate is a centering device.

Furthermore, the centering device at least comprises a hydraulic motor, an output shaft of the hydraulic motor is connected to one end of a transmission shaft through a coupler, the other end of the transmission shaft penetrates through a pair of bearings II, the bearings II are installed in bearing seats II in a matching mode, the bearing seats II are fixed on a flat plate, a gear II sleeved on the transmission shaft through a key penetrates between the two bearing seats II, the gear II is meshed with the gear I, and a screw rod penetrates through a central hole of the gear I through a key;

two sections of threads with opposite rotation directions are arranged on the rod wall of the screw and are respectively positioned on two sides of the first gear, an internal thread sleeve is screwed on each section of thread, the outer wall of each internal thread sleeve is fixedly connected with an upright rod perpendicular to the screw, the upright rod vertically penetrates through a rectangular long hole formed in a flat plate, the central line of the rectangular long hole in the length direction is parallel to the screw, and the part of the upright rod extending out of the rectangular long hole is positioned above the bracket and is used for clamping a coil;

the two ends of the screw are matched with a pair of first bearings, the first bearings are matched with a first mounting bearing seat, and the first bearing seat is fixed on the flat plate.

Preferably, the upper surface of the bracket is provided with at least one pair of bosses, each pair of bosses inclines towards the opposite direction to form a V-shaped positioning space for lifting the coil, and the surface of each boss for contacting the coil is paved with a nylon plate or a steel lining plate.

Preferably, the swing arm is divided into two sections by a pin shaft, an included angle of 120 degrees is formed between the two sections, and the included angle deviates from the middle point of the double-output oil cylinder.

Preferably, when the two upright posts of the same screw rod are respectively positioned at the outermost ends, the distance between the two upright posts is 50-80 mm larger than the maximum width of the tape roll; when two vertical rods of the same screw rod are respectively positioned at the innermost ends, the distance between the two vertical rods is 10-20 mm smaller than the minimum width of the tape roll.

Preferably, the vertical rod in the same centering device penetrates through the rectangular long hole, and the length of the suspended part is 0.15-0.25 times of the maximum radius of the coil.

The invention also protects a roll-up and roll-off method of the roll-over preventing device for radial roll-off of the large-diameter-to-width ratio strip coil, which comprises the following steps:

installing an anti-tipping device for radial coil unloading of the large-diameter-width ratio coil on a coil conveying trolley;

when winding up, the coil is hung and released to the V-shaped positioning space of the bracket, two oil cylinder rods of the double-output oil cylinders simultaneously extend out to push the swing arm to lift and approach the coil, the hydraulic motor is driven to rotate, the internal thread sleeves on the same screw rod simultaneously approach the coil until the vertical rods are attached to the coil, the hydraulic motor is stopped, the four vertical rods stably clamp the coil, then the coil conveying trolley is driven to enter the uncoiler to perform a shaft aligning action until the coiling core of the coil is coaxial with the coiling block of the uncoiler, the uncoilers at two sides are driven to lean against the coil, when a winding drum of the uncoiler enters a winding core and supports a coil, the hydraulic motor is driven to rotate reversely, the four vertical rods loosen the coil, two oil cylinder rods of the double-output oil cylinders are driven to retract respectively, the swing arms fall down, the coil conveying trolley is driven to exit from the uncoiler area, the uncoilers on two sides are driven to continuously approach the coil until the coil is clamped, the uncoiling is prepared, and the coiling is completed;

the unwinding process is the reverse operation of the winding process.

The invention has the following beneficial effects:

(1) the large-diameter-to-width-ratio strip coil is clamped by the aid of the two sides of the vertical rods, so that the vertical stability and the external disturbance resistance of the large-diameter-to-width-ratio strip coil in the transportation process are greatly enhanced, the effect of preventing the strip coil from tipping is achieved, the mode is more reliable than a method for comprehensively improving manufacturing precision and control precision, the anti-interference capability is stronger, and the manufacturing cost is lower.

(2) The invention utilizes the self-locking characteristic of the threaded sleeve screw structure, when the coil has a tilting tendency, the huge dead weight can make the tilting moment larger, the force acting on the upright stanchion can also be very large, and exceeds the output moment of the hydraulic motor.

(3) The whole process is controlled by a hydraulic system and an electric system, and an operator does not need to approach the coil to insert the steel pipe, so that the safety risk is reduced, and the production efficiency is improved; because personnel do not need to carry out the operation beside the machine, only need arrange the sensor in suitable position, can realize the full automation of big footpath aspect ratio coil of strip footpath unloading mode.

In order to make the aforementioned and other objects of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 is a front view of an anti-rollover device for radial unwinding of a large diameter to width ratio tape roll.

Fig. 2 is a cross-sectional view of the centering device (direction a-a of fig. 1).

FIG. 3 is a schematic diagram of the position of the swing arm and the tape roll after the swing arm is pushed by the double output oil cylinders to be lifted.

Figure 4 is a schematic view of the structure of the centering device (direction B-B in figure 3) with the upright at the outermost end of the screw.

Figure 5 is a schematic view of the centering device when the vertical rods clamp the tape roll (direction B-B in figure 3).

Fig. 6 is a schematic view of the roll preventing device when it is mounted on the carriage and holds the roll of strip.

Fig. 7 is a schematic view of the anti-tipping device mounted on the carriage and falling down the swing arm.

Description of reference numerals:

1. a bracket; 2. a pin shaft; 3. swinging arms; 4. sliding the pin shaft; 5. a double-output oil cylinder; 6. a centering device; 7. a coil conveying trolley; 8. a flat plate;

601. erecting a rod; 602. a rectangular long hole; 603. an internal thread sleeve; 604. a screw; 605. a first bearing; 606. a first bearing seat; 607. a first gear; 608. a second gear; 609. a drive shaft; 610. a second bearing; 611. a second bearing seat; 612. a coupling; 613. a hydraulic motor.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

In the present invention, the upper, lower, left and right sides in the drawings are regarded as the upper, lower, left and right sides of the roll-over preventing device for radial unwinding of a large-diameter-to-width ratio strip coil described in the present specification.

The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.

Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.

The first embodiment:

referring to fig. 1, a first embodiment of the invention relates to an anti-tipping device for radial coil unwinding of a large-diameter-width ratio coil, which comprises a bracket 1 for lifting the coil, a double-output oil cylinder 5 is fixedly mounted below the middle of the bracket 1, the rod head of each oil cylinder rod at two ends of the double-output oil cylinder 5 is connected with a swing arm 3 capable of rotating around a sliding pin 4 through the sliding pin 4, the swing arm 3 is connected with a centering device 6 through a flat plate 8, the two centering devices 6 are parallel and opposite, and the coil is clamped between the two centering devices 6.

The anti-tipping device is arranged on the coil conveying trolley 7;

when the coil is wound, a coil is directly hung on the bracket 1, the width center of the coil is as consistent as possible with the central line of the bracket 1, two oil cylinder rods of the double-output oil cylinder 5 extend out simultaneously to push the swing arm 3 to lift and approach the coil, the two centering devices 6 stably clamp the coil, then the coil conveying trolley 7 is driven to enter the uncoiler to perform axis aligning action until the winding core of the coil is coaxial with the winding drum of the uncoiler, the uncoilers on two sides are driven to approach the coil, when the winding drum of the uncoiler enters the winding core and supports the coil, the two centering devices 6 loosen the coil, the two oil cylinder rods of the double-output oil cylinder 5 are driven to retract respectively, the swing arm 3 falls down, the coil conveying trolley 7 is driven to exit the uncoiler area, and the uncoilers on two sides are driven to continue to approach the coil until the;

the unwinding process is the reverse operation of the winding process.

Two oil cylinder rods are arranged at two ends of the double-output oil cylinder 5, a plug cavity is shared in the middle, the rod ends of the double-output oil cylinder are connected with the lower ends of the swing arms 3, when hydraulic oil is introduced into the plug cavity, the two oil cylinder rods can extend out together, and the left swing arm 3 and the right swing arm 3 are further pushed to lift together. The double-output oil cylinder 5 is used for adjusting the width between the two swing arms 3 at the two ends of the same oil cylinder, and aims to push the swing arms 3 to lift up to be close to the coil or push the swing arms 3 to fall off to leave the coil, so that the structure of the anti-tipping device is more compact, and fewer hydraulic pipelines are needed.

In the anti-overturning device, the double-output oil cylinder 5, the two swing arms 3 and the two centering devices 6 are arranged in total, when a strip coil is placed, the central axis of the strip coil is perpendicular to the central axis of the double-output oil cylinder 5, the strip coil is placed between the two centering devices 6, the two centering devices 6 can clamp or loosen the strip coil, and the strip coil is ensured to be in a stable clamping state when being clamped.

When the roll is disturbed and tends to tip over, the roll does not have an excessively large angle of inclination because the center of gravity of the roll is only slightly off-center at this time, and the tipping moment does not become excessively large yet, i.e., is overcome by the restraining moment formed by the centering device, so that the roll is controlled within a small tipping angle range and is kept in a vertically stable state.

Second embodiment:

the embodiment relates to an anti-tipping device for radial coil unloading of a large-diameter-width-ratio coil, which comprises a bracket 1 for lifting the coil, wherein a double-output oil cylinder 5 is fixedly mounted below the bracket 1, the rod head of each oil cylinder rod at the two ends of the double-output oil cylinder 5 is connected with a swing arm 3 capable of rotating around a sliding pin shaft 4 through the sliding pin shaft 4, the swing arm 3 is connected with a centering device 6 through a flat plate 8, the two centering devices 6 are parallel and opposite, and the coil is clamped between the two centering devices 6.

The lower end of the swing arm 3 is connected with the rod head of an oil cylinder rod of a double-output oil cylinder 5 through a sliding pin shaft 4, the middle part of the swing arm 3 is connected with the bracket 1 through a pin shaft 2 and can rotate around the pin shaft 2 as a center, the upper part of the swing arm 3 is fixedly connected with a flat plate 8, and the middle part of the flat plate 8 is provided with a centering device 6.

Firstly, the swing arm 3 can rotate around the sliding pin 4 to lift or fall the swing arm 3, as shown in fig. 3 and 6, the swing arm 3 is in a lifted state, and fig. 7 is in a fallen state of the swing arm 3; secondly, the swing arm 3 is hinged to the bracket 1 through a pin shaft 2 by upper limbs and lower limbs, and the angle between the upper limbs and the lower limbs can be adjusted through the pin shaft 2, for example, in the embodiment, an included angle of 120 degrees is preferably formed between the upper limbs and the lower limbs of the swing arm 3, and the included angle deviates from the middle point of the double-output oil cylinder 5, so that the swing arm 3 can be closer to a coiled material, the stability during clamping is improved, and meanwhile, the swing arm 3 can be ensured to fall to a reasonable position without interfering with coil loading and coil unloading.

Preferably, the swing arm 3 is in a V shape, the included angle of the V shape is 120 °, the tip of the V shape is hinged to the bracket 1 through a pin 2, one arm end of the V shape is connected to the rod head of the cylinder rod of the dual output cylinder 5 through a sliding pin 4, and the other arm is provided with a flat plate 8 attached to the arm, which is a preferred structure of the swing arm 3, but not limited thereto.

Referring to fig. 2, the centering device 6 at least includes a hydraulic motor 613, an output shaft of the hydraulic motor 613 is connected to one end of a transmission shaft 609 through a coupling 612, the other end of the transmission shaft 609 is sleeved with a pair of second bearings 610, the second bearings 610 are installed in a second bearing block 611 in a matching manner, the second bearing block 611 is fixed on the flat plate 8, a second gear 608 sleeved on the transmission shaft 609 is inserted between the two second bearing blocks 611 through a key, the second gear 608 is meshed with the first gear 607, and a screw 604 is inserted through a key in a central hole of the first gear 607;

two sections of threads with opposite rotation directions are arranged on the rod wall of the screw 604 and are respectively positioned on two sides of the first gear 607, an internal thread sleeve 603 is screwed on each section of thread, the outer wall of each internal thread sleeve 603 is fixedly connected with an upright rod 601 perpendicular to the screw 604, the upright rod 601 perpendicularly penetrates through a rectangular long hole 602 arranged on the flat plate 8, the central line of the rectangular long hole 602 in the length direction is parallel to the screw 604, and the part of the upright rod 601 extending out of the rectangular long hole 602 is positioned above the bracket 1 and is used for clamping a coil;

the two ends of the screw 604 are matched with a pair of bearings I605, the bearings I605 are matched with a bearing seat I606, and the bearing seat I606 is fixed on the flat plate 8.

As shown in fig. 2, the second bearing seat 611 has two holes, an upper hole and a lower hole, the second bearing 610 is installed in the lower hole, and the upper hole is penetrated by the screw 604, so as to extend the second bearing seat 611 until the second bearing seat 611 can be fixed to the flat plate 8 through bolts.

The operating principle of the centering device 6 is as follows: the hydraulic motor 613 is started, the hydraulic motor 613 drives the transmission shaft 609 to rotate through the coupler 612, the transmission shaft 609 drives the gear two 608 to rotate, the gear two 608 and the gear one 607 are a pair of gear pairs, the gear one 607 rotates to drive the screw 604 to rotate, when the screw 604 rotates, the internal thread sleeves 603 on the transmission side and the operation side move in opposite directions along the screw 604, and the vertical rods 601 on the internal thread sleeves 603 also move along with the screw, so that the two vertical rods 601 on the transmission side move in opposite directions/move away from each other, or the two vertical rods 601 on the operation side move in opposite directions/move away from each other, and the clamping of the coiled stock or the releasing of the coiled stock are realized.

When moving, the upright 601 will move left and right along the length direction of the rectangular long hole 602, as shown in fig. 4, the upright 603 is located at the outermost end of the screw 604, and the position of the coil is not clamped; fig. 5 shows the position of the vertical rod 603 at the innermost end of the screw 604, when holding the tape roll.

The centering device 6 utilizes the self-locking characteristic of a threaded sleeve screw structure. When the coil of strip has the tendency of tipping, huge dead weight can make the tipping moment bigger, and the constraint moment acting on the upright stanchion 601 will also be bigger, and may exceed the output moment of the hydraulic motor 613, in order to solve this problem, the anti-tipping device of this embodiment has set up the screw sleeve screw rod structure between upright stanchion 601 and hydraulic motor 613, utilize the auto-lock characteristic between internal thread bush 603 and screw rod 604, make upright stanchion 601 still can fix the normal position under huge external force, can constrain the coil of strip and tip the angle and further increase, also can not transmit great tipping force to the hydraulic motor 613, avoid causing the drive system to damage.

The third embodiment:

on the basis of the second embodiment, in order to reduce the damage to the coil, at least one pair of bosses are arranged on the upper surface of the bracket 1, each pair of bosses are inclined towards the opposite direction to form a V-shaped positioning space for lifting the coil, a nylon plate or a steel lining plate is laid on the surface of each boss for contacting the coil, when the coil is hung in the V-shaped positioning space, the surface of the coil is contacted with the surface of the boss, and the nylon plate or the steel lining plate can protect the coil and avoid the damage.

The embodiment provides a stroke control range of the internal thread sleeve 603 on the screw 604, when two upright posts 601 of the same screw 604 are respectively positioned at the outermost ends, the distance between the two upright posts 601 is 50-80 mm larger than the maximum width of a coil, and a small swing allowance and deviation during coil hanging can be contained; when the two upright posts 601 of the same screw 604 are respectively positioned at the innermost ends, the distance between the two upright posts 601 is 10 mm-20 mm smaller than the minimum width of the tape roll, and the clamping effect on the tape roll with the minimum specification can be ensured.

The upright rod 601 in the same centering device 6 penetrates through the rectangular long hole 602, and the length of the suspended part is 0.15-0.25 times of the maximum radius of the coil.

If the height of the upright 601 is too low, the clamping effect on the coil will be weakened and the anti-tipping ability will be reduced; if the height of the upright rod 601 is too high, when the coil conveying trolley 7 needs to exit from the coiling position, the upright rod 601 may interfere with the side guide post of the uncoiler, and the like, so that the running height of the coil conveying trolley 7 is further reduced, the lifting stroke of the trolley is increased, the project cost is increased, and the economy is deteriorated.

Fourth embodiment:

the embodiment provides a roll-up and roll-off method of an anti-tipping device for radial roll-off of a large-diameter-to-width ratio strip coil, which comprises the following steps:

installing an anti-tipping device for radial coil unloading of the large-diameter-width ratio coil on a coil conveying trolley 7;

when winding, the coil is hung and released to the V-shaped positioning space of the bracket 1, two oil cylinder rods of the double-output oil cylinders 5 extend out simultaneously to push the swing arms 3 to lift and approach to the coil, the hydraulic motor 613 is driven to rotate, the internal thread sleeves 603 on the same screw 604 approach to the coil simultaneously until the upright rods 601 attach to the coil, the hydraulic motor 613 is stopped, the four upright rods 601 stably clamp the coil (as shown in figure 6), then the coil conveying trolley 7 is driven to enter the uncoiler to perform the shaft aligning action until the core of the coil is coaxial with the reel of the uncoiler, the uncoilers on two sides are driven to approach to the coil, when the reel of the uncoiler enters the core and holds the coil, the hydraulic motor 613 is driven to rotate reversely, the four upright rods 601 are loosened, the two oil cylinder rods of the double-output oil cylinders 5 are driven to retract respectively, the swing arms 3 fall down, the coil conveying trolley 7 is driven to exit from the uncoiler area, the uncoil, preparing for uncoiling and finishing coiling;

the unwinding process is the reverse operation of the winding process.

The process can be controlled by a hydraulic system and an electric system, and an operator does not need to approach the coil to insert the steel pipe, so that the safety risk is reduced, and the production efficiency is improved; because personnel do not need to carry out the operation beside the machine, only need arrange the sensor in suitable position, can realize the full automation of big footpath aspect ratio coil of strip footpath unloading mode.

The anti-tipping device for radial coil unloading of the large-diameter-width-ratio coil comprises a bracket 1 for lifting the coil, a double-output oil cylinder 5 is fixedly mounted below the bracket 1, the rod head of each oil cylinder rod at two ends of the double-output oil cylinder 5 is connected with a swing arm 3 capable of rotating around a sliding pin shaft 4 through the sliding pin shaft 4, the swing arm 3 is connected with a centering device 6 through a flat plate 8, the two centering devices 6 are parallel and opposite, and the coil is clamped between the two centering devices 6.

The centering device 6 at least comprises a hydraulic motor 613, an output shaft of the hydraulic motor 613 is connected to one end of a transmission shaft 609 through a coupler 612, the other end of the transmission shaft 609 penetrates through a pair of second bearings 610, the second bearings 610 are installed in second bearing seats 611 in a matching mode, the second bearing seats 611 are fixed on the flat plate 8, a second gear 608 sleeved on the transmission shaft 609 in a penetrating mode through a key is arranged between the two second bearing seats 611, the second gear 608 is meshed with the first gear 607, and a screw 604 is inserted into a central hole of the first gear 607 through a key;

The upper surface of the bracket 1 is provided with at least one pair of bosses, each pair of bosses respectively incline towards the opposite direction to form a V-shaped positioning space for lifting the coil, and the surface of each boss for contacting the coil is paved with a nylon plate or a steel lining plate.

The swing arm 3 is divided into two sections by the pin shaft 2, an included angle of 120 degrees is formed between the two sections, and the included angle deviates from the middle point of the double-output oil cylinder 5.

When the two upright posts 601 of the same screw 604 are respectively positioned at the outermost ends, the distance between the two upright posts 601 is 50-80 mm larger than the maximum width of the tape roll; when the two upright posts 601 of the same screw 604 are respectively positioned at the innermost ends, the distance between the two upright posts 601 is 10 mm-20 mm smaller than the minimum width of the tape roll.

The invention clamps the large-diameter-to-width-ratio strip coil through the four vertical rods on two sides, greatly enhances the vertical stability and the external disturbance resistance of the large-diameter-to-width-ratio strip coil in the transportation process, and thus achieves the effect of preventing the strip coil from tipping. Compared with a method for comprehensively improving the manufacturing precision and the control precision, the method is more reliable, stronger in anti-interference capability and lower in manufacturing cost; in addition, when the coil of strip tends to tip over, the huge dead weight can make the tipping moment bigger, the force acting on pole setting will be very big too, exceed the output moment of the hydraulic motor, the invention utilizes the characteristic of auto-lock between threaded sleeve and threaded spindle, make the pole setting can fix in the original position under the huge external force, can keep the coil of strip to erect the state, will not transmit the larger tipping force to gear and hydraulic motor too, avoid causing the drive system to damage.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.

Claims

1. A anti-tilt device that is used for big footpath aspect ratio coil of strip to upwards unload roll, including bracket (1) that is used for lifting the coil of strip, its characterized in that: the middle lower side of the bracket (1) is fixedly provided with a double-output oil cylinder (5), the rod heads of each oil cylinder rod at the two ends of the double-output oil cylinder (5) are connected with a swing arm (3) capable of rotating around a sliding pin shaft (4) through the sliding pin shaft (4), the swing arm (3) is connected with a centering device (6) through a flat plate (8), the two centering devices (6) are parallel and opposite, and a tape roll is clamped between the two centering devices (6).

2. The roll-over preventing device for radial coil-unloading of a large-diameter-to-width ratio coil as claimed in claim 1, wherein: the lower end of the swing arm (3) is connected to the rod head of an oil cylinder rod of the double-output oil cylinder (5) through a sliding pin shaft (4), the middle of the swing arm (3) is connected with the bracket (1) through a pin shaft (2) and can rotate around the pin shaft (2) as the center, the upper part of the swing arm (3) is fixedly connected with the flat plate (8), and the middle of the flat plate (8) is provided with the centering device (6).

3. The roll-over preventing device for radial coil-unloading of a large-diameter-to-width ratio coil as claimed in claim 1 or 2, wherein: the centering device (6) at least comprises a hydraulic motor (613), an output shaft of the hydraulic motor (613) is connected to one end of a transmission shaft (609) through a coupler (612), the other end of the transmission shaft (609) penetrates through a pair of second bearings (610), the second bearings (610) are installed in a second bearing block (611) in a matching mode, the second bearing block (611) is fixed on the flat plate (8), a second gear (608) which penetrates through the transmission shaft (609) through a key is arranged between the two second bearing blocks (611), the second gear (608) is meshed with the first gear (607), and a screw (604) penetrates through a key in a central hole of the first gear (607);

two sections of threads with opposite rotation directions are arranged on the rod wall of the screw rod (604) and are respectively positioned on two sides of the first gear (607), an internal thread sleeve (603) is screwed on each section of thread, the outer wall of each internal thread sleeve (603) is fixedly connected with an upright rod (601) perpendicular to the screw rod (604), the upright rod (601) vertically penetrates through a rectangular long hole (602) formed in the flat plate (8), the central line of the rectangular long hole (602) along the length direction is parallel to the screw rod (604), and the part of the upright rod (601) extending out of the rectangular long hole (602) is positioned above the bracket (1) and is used for clamping a coil;

two ends of the screw rod (604) are provided with a pair of first bearings (605) in a matching mode, the first bearings (605) are provided with first bearing seats (606) in a matching mode, and the first bearing seats (606) are fixed on the flat plate (8).

4. The roll-over preventing device for radial coil-unloading of a large-diameter-to-width ratio coil as claimed in claim 3, wherein: the upper surface of the bracket (1) is provided with at least one pair of bosses, each pair of bosses are inclined towards the opposite direction to form a V-shaped positioning space for lifting the coil, and a nylon plate or a steel lining plate is laid on the surface of each boss for contacting the coil.

5. The roll-over preventing device for radial coil-unloading of a large-diameter-to-width ratio coil as claimed in claim 2, wherein: the swing arm (3) is divided into two sections by the pin shaft (2), an included angle of 120 degrees is formed between the two sections, and the included angle deviates from the middle point of the double-output oil cylinder (5).

6. The roll-over preventing device for radial coil-unloading of a large-diameter-to-width ratio coil as claimed in claim 3, wherein: when two vertical rods (601) of the same screw (604) are respectively positioned at the outermost ends, the distance between the two vertical rods (601) is 50-80 mm larger than the maximum width of the tape roll; when two vertical rods (601) of the same screw (604) are respectively positioned at the innermost ends, the distance between the two vertical rods (601) is 10-20 mm smaller than the minimum width of the tape roll.

7. The roll-over preventing device for radial coil-unloading of a large-diameter-to-width ratio coil as claimed in claim 3, wherein: the vertical rod (601) in the same centering device (6) penetrates through the rectangular long hole (602), and the length of the suspended part is 0.15-0.25 times of the maximum radius of the coil.

8. A roll-up and roll-off method of an anti-tipping device for radial roll-off of a large-diameter-to-width ratio strip roll is characterized in that:

an anti-tipping device for radial coil unloading of the large-diameter-width ratio coil is arranged on a coil conveying trolley (7);

when the coil is wound, the coil is hung and unreeled to a V-shaped positioning space of a bracket (1), two oil cylinder rods of a double-output oil cylinder (5) simultaneously extend out to push a swing arm (3) to lift and approach the coil, a hydraulic motor (613) is driven to rotate, an internal thread sleeve (603) on the same screw rod (604) simultaneously approaches to the coil until the vertical rods (601) attach to the coil, the hydraulic motor (613) is stopped, the four vertical rods (601) stably clamp the coil, then a coil conveying trolley (7) is driven to enter an uncoiling machine to perform shaft aligning action until the core of the coil is coaxial with the winding drum of the uncoiling machine, the uncoiling machines on two sides are driven to approach the coil, when the winding drum of the uncoiling machine enters the core and holds the coil, the hydraulic motor (613) is driven to reversely rotate, the four vertical rods (601) loosen the coil, the two oil cylinder rods of the double-output oil cylinder (5) are driven to respectively retract, the swing arm (3) falls down, driving the uncoilers at the two sides to continuously approach the strip coil until the strip coil is clamped, preparing to uncoil and finishing coiling;

the unwinding process is the reverse operation of the winding process.