阅读说明：本技术 一种冷轧钢卷放卷装置 (Cold rolled steel coil unwinding device ) 是由 段双录 张红 于 2020-05-25 设计创作，主要内容包括：一种冷轧钢卷放卷装置,包括第一支撑结构,所述冷轧钢卷放卷装置还包括设置于所述第一支撑结构周向两侧的第二支撑结构,所述第一支撑结构包括第一支撑框、设置于所述第一支撑框内径向两侧的第一活塞、设置于所述第一活塞上的第一支撑杆、设置于所述第一支撑框径向两侧的第一弹性板。本发明可以适应不同口径大小的钢卷,且可以任意调节第一弹性板及第三弹性板的位置,以便使得第三弹性板及第一弹性板可以全面的顶靠在钢卷的内圆周面上,对钢卷的支撑稳定且效果显著。(The utility model provides a device is unreeled to cold rolling steel coil, includes first bearing structure, the device is unreeled to cold rolling steel coil still including set up in the second bearing structure of first bearing structure circumference both sides, first bearing structure include first carriage, set up in the first carriage internal diameter to the first piston of both sides, set up in first bracing piece on the first piston, set up in the first elastic plate of the radial both sides of first carriage. The invention can adapt to steel coils with different calibers, and can randomly adjust the positions of the first elastic plate and the third elastic plate so as to ensure that the third elastic plate and the first elastic plate can be fully propped against the inner circumferential surface of the steel coil, thereby having stable support and obvious effect on the steel coil.)

1. The utility model provides a cold-rolled steel coils unwinding equipment, includes first bearing structure, its characterized in that: the unwinding device for the cold rolled steel coil further comprises a second supporting structure arranged on two sides of the circumference of the first supporting structure, the first supporting structure comprises a first supporting frame, a first piston arranged on two sides of the inner diameter of the first supporting frame, a first supporting rod arranged on the first piston, a first elastic plate arranged on two sides of the inner diameter of the first supporting frame, one end of the first supporting rod is fixedly connected with the first piston, the other end of the first supporting rod is fixedly connected with the first elastic plate, the second supporting structure comprises a second supporting frame, a second piston arranged in the second supporting frame, a second supporting rod arranged on the second piston, supporting plates arranged on two sides of the circumference of the second supporting rod, a third piston arranged on one end of the second supporting rod in the radial direction, a sealing frame, a second elastic plate arranged on the sealing frame, A third elastic plate located on the supporting plate, a fourth elastic plate arranged on the radial inner side of the third elastic plate, one end of the second supporting frame is fixedly connected with the first supporting frame, the second piston is contained in the second supporting frame and is in sliding contact with the inner surface of the second supporting frame, one end of the second supporting rod is fixedly connected with the second piston, the other end of the second supporting rod is fixedly connected with the third piston, one end of the supporting plate is fixedly connected with the side surface of the second supporting rod, the third piston is contained in the sealing frame and is in sliding contact with the inner surface of the sealing frame, the sealing frame is fixedly connected with the second elastic plate, one end of the third elastic plate is fixedly connected with the supporting plate, the third elastic plate abuts against the radial outer surface of the second elastic plate and is in sliding contact with the radial outer surface of the second elastic plate, and one end of the fourth elastic plate is fixedly connected with the supporting plate, the fourth resilient plate bears against and is in sliding contact with a radially inner surface of the second resilient plate.

2. The cold rolled steel coil unwinding device of claim 1, characterized in that: the second supporting structure further comprises an inclined rod arranged on the supporting plate and a roller arranged at the end part of the inclined rod, one end of the inclined rod is fixedly connected with the supporting plate, the roller is in pivot connection with the other end of the inclined rod, and the roller abuts against the radial inner surface of the first elastic plate.

3. The cold rolled steel coil unwinding device according to claim 2, characterized in that: the first piston is accommodated in the first support frame and is in sliding contact with the inner surface of the first support frame, and one end of the first support rod is accommodated in the first support frame and is in sliding contact with the inner surface of the first support frame.

4. The cold rolled steel coil unwinding device according to claim 3, characterized in that: the included angle between the inclined rod and the first supporting rod is 45 degrees.

5. The cold rolled steel coil unwinding device according to claim 4, characterized in that: the first supporting structure is characterized in that a first through hole is formed in one axial end face of the first supporting frame, the first supporting structure further comprises a first valve arranged in the first through hole, and the first valve is contained in the first through hole and fixedly connected with the first supporting frame.

6. The cold rolled steel coil unwinding device according to claim 5, characterized in that: the second supporting structure comprises a second supporting frame and a second valve, wherein a second through hole is formed in one axial end face of the second supporting frame, the first through hole and the second through hole are located on the same side, the second supporting structure further comprises a second valve arranged in the second through hole, and the second valve is contained in the second through hole and fixedly connected with the second supporting frame.

7. The cold rolled steel coil unwinding device according to claim 6, characterized in that: the cold rolling steel coil unwinding device further comprises a fan structure arranged at one end of the first supporting frame in the axial direction, and the fan structure comprises a centralized frame, a pipeline arranged on the centralized frame, a fan arranged on the pipeline and a third valve.

8. The cold rolled steel coil unwinding device according to claim 7, characterized in that: the side of concentrated frame is equipped with the opening, the opening with an axial side fixed connection of first carriage and second carriage, first through-hole and second through-hole department are in the concentrated frame, be equipped with the third through-hole on the concentrated frame, the one end of pipeline is aimed at the third through-hole and with the fixed surface of concentrated frame is connected.

9. The cold rolled steel coil unwinding device according to claim 8, characterized in that: the first supporting structure further comprises a first supporting shaft arranged on the other end face of the first supporting frame in the axial direction and a first bearing arranged on the first supporting shaft, and the first supporting shaft penetrates through an inner ring of the first bearing and is fixedly connected with the inner ring.

10. The cold rolled steel coil unwinding device of claim 9, characterized in that: the fan structure is characterized by further comprising a second supporting shaft arranged on the concentration frame and a second bearing arranged on the second supporting shaft, one end of the second supporting shaft is fixedly connected with the concentration frame, and the second supporting shaft penetrates through an inner ring of the second bearing and is fixedly connected with the inner ring.

Technical Field

The invention relates to the technical field of machinery, in particular to a cold rolled steel coil unwinding device.

Background

When the cold-rolled steel coil is unreeled, the cold-rolled steel coil is generally placed on a rotating shaft, and then the rotating shaft is rotated to unreel the steel coil. However, in the conventional unwinding device, the diameter of the rotating shaft is inconvenient, the conventional unwinding device can only adapt to a cold-rolled steel coil with one diameter, when the inner diameter of the cold-rolled steel coil is larger than the diameter of the rotating shaft, the cold-rolled steel coil slips on the rotating shaft, even the phenomenon of no following coil occurs, the smooth unwinding is affected, the application range is narrow, the conventional unwinding device cannot adapt to cold-rolled steel coils with different diameters, and the purchasing cost is increased.

Therefore, there is a need to provide a new technical solution to overcome the above-mentioned drawbacks.

Disclosure of Invention

The invention aims to provide a cold rolled steel coil unwinding device which can effectively solve the technical problems.

In order to achieve the purpose of the invention, the following technical scheme is adopted:

the utility model provides a device is unreeled to cold-rolled steel coil, includes first bearing structure, the device is unreeled to cold-rolled steel coil still including set up in the second bearing structure of first bearing structure circumference both sides, first bearing structure include first carriage, set up in the first piston of first carriage internal diameter to both sides, set up in first bracing piece on the first piston, set up in the first elastic plate of the radial both sides of first carriage, the one end of first bracing piece with first piston fixed connection, the other end of first bracing piece with first elastic plate fixed connection, second bearing structure include the second carriage, set up in the second piston in the second carriage, set up in the second bracing piece on the second piston, set up in the backup pad of second bracing piece circumference both sides, set up in the radial third piston that keeps away from center one end of second bracing piece is along, The sealing frame, the second elastic plate arranged on the sealing frame, the third elastic plate positioned on the supporting plate, and the fourth elastic plate arranged on the radial inner side of the third elastic plate, one end of the second supporting frame is fixedly connected with the first supporting frame, the second piston is contained in the second supporting frame and is in sliding contact with the inner surface of the second supporting frame, one end of the second supporting rod is fixedly connected with the second piston, the other end of the second supporting rod is fixedly connected with the third piston, one end of the supporting plate is fixedly connected with the side surface of the second supporting rod, the third piston is contained in the sealing frame and is in sliding contact with the inner surface of the sealing frame, the sealing frame is fixedly connected with the second elastic plate, one end of the third elastic plate is fixedly connected with the supporting plate, and the third elastic plate abuts against the radial outer surface of the second elastic plate and is in sliding contact with the radial outer surface of the second elastic plate, one end of the fourth elastic plate is fixedly connected with the supporting plate, and the fourth elastic plate abuts against the radial inner surface of the second elastic plate and is in sliding contact with the radial inner surface of the second elastic plate.

Compared with the prior art, the invention has the following beneficial effects: the unwinding device for the cold-rolled steel coil can adapt to steel coils with different calibers, and can randomly adjust the positions of the first elastic plate and the third elastic plate so as to ensure that the third elastic plate and the first elastic plate can be fully abutted against the inner circumferential surface of the steel coil, so that the support for the steel coil is stable and the effect is obvious; meanwhile, the structure of the second elastic plate, the third elastic plate and the fourth elastic plate can play a sufficient supporting role for the third elastic plate through the elastic deformation of the second elastic plate and the fourth elastic plate, and meanwhile, the friction force between the second elastic plate and the third elastic plate and the friction force between the second elastic plate and the fourth elastic plate can also play a sufficient supporting role for the third elastic plate, so that the third elastic plate can be completely and stably propped against the inner circumferential surface of the steel coil, and the pressure force propped against the steel coil is reduced; and the setting of sealing frame can play stable supporting role to the second elastic plate, prevents that the third elastic plate from failing comprehensive top to lean on the inner circumference of coil of strip.

Drawings

FIG. 1 is a schematic view of a part of the structure of the unwinding device for the cold rolled steel coil of the present invention;

FIG. 2 is a cross-sectional view taken along A-A' of the unwinding assembly of the cold-rolled steel coil of the invention shown in FIG. 1;

FIG. 3 is a cross-sectional view taken along the line B-B' of the unwinding device of the cold-rolled steel coil of the invention shown in FIG. 1;

FIG. 4 is a schematic view of the overall structure of the unwinding device for the cold rolled steel coil of the present invention;

FIG. 5 is a right side view of the hold-down structure of the cold rolled steel coil unwind shown in FIG. 4 in accordance with the present invention;

FIG. 6 is a schematic structural view of the cold-rolled steel coil unwinding device and the cold-rolled steel coil shown in FIG. 1;

FIG. 7 is a force analysis diagram of the point C of the unwinding device for cold-rolled steel coils of the present invention shown in FIG. 6.

Detailed Description

The unwinding device for cold rolled steel coils of the present invention will be described more fully with reference to the accompanying drawings.

As shown in fig. 1 to 7, the unwinding device for the cold-rolled steel coil comprises a first supporting structure 1, second supporting structures 2 arranged on two sides of the first supporting structure 1, and a fan structure 3 arranged at one axial end of the first supporting structure 1.

As shown in fig. 1 to 3, the first support structure 1 includes a first support frame 11, first pistons 12 disposed on two radial sides in the first support frame 11, first support rods 13 disposed on the first pistons 12, first elastic plates 14 disposed on the first support rods 13, first valves 15 disposed on one axial end surface of the first support frame 11, first support shafts 16 disposed on the other axial end surface of the first support frame 11, and first bearings 17 disposed on the first support shafts 16. As shown in fig. 1, the first support frame 11 is preferably a hollow rectangular parallelepiped and has two end faces in the radial direction communicating with each other. The first pistons 12 are two and are respectively located at the left and right sides of the inner radial direction of the first support frame 11, and the first pistons 12 are accommodated in the first support frame 12 and are in sliding contact with the inner surface of the first support frame, so that the first pistons 12 can move left and right in the first support frame 12. First bracing piece 13 is equipped with two and is located respectively first bracing frame 11 radial both ends, the one end of first bracing piece 13 accept in first bracing frame 11 and with first piston 12 fixed connection, first bracing piece 13 with the internal surface sliding contact of first bracing frame 11, first bracing piece 13 can be stable controls about. First elastic plate 14 is equipped with two and is in the radial both sides of first carriage 11, first elastic plate 14 is crooked form, the other end of first bracing piece 13 with first elastic plate 14 fixed connection, thus it is right first elastic plate 14 plays the supporting role, first elastic plate 14 adopts elastic material to make, makes it can bending deformation. A sealed space is formed between the two first pistons 12, and air in the space can be compressed to support the first pistons 12. As shown in fig. 2, a first through hole 111 is provided on one axial end surface of the first support frame 11, and the first through hole 111 penetrates through inner and outer surfaces of the first support frame 11. The first valve 15 is accommodated in the first through hole 111 and is fixedly connected with the first support frame 11, and the first valve 15 blocks the first through hole 111 and can control air to enter the first support frame 11. One end of the first support shaft 16 is fixedly connected to the other axial end surface of the first support frame 11. The first bearing 17 is disposed on the first support shaft 16, and the first bearing shaft 16 passes through an inner ring of the first bearing 17 and is fixedly connected to the inner ring.

The first piston 12 and the first support rod 13 in the first support structure 1 are arranged to blow air into the first support frame 11, so that the two first pistons 12 can be separated from each other, the first support rod 13 can be separated from each other, and further the two first elastic plates 14 are separated from each other, so that the first elastic plates 14 can be tightly propped against the inner circumferential surface of the cold-rolled steel coil to support the cold-rolled steel coil, and the distance between the two first elastic plates 14 can be adjusted to adapt to the cold-rolled steel coils with different inner diameters, so that the application range is wide, and gas with sufficient air pressure can be injected between the first pistons 12 to support the first pistons 12 and the first support rods 13, so that the first elastic plates 14 can be stably propped against the inner circumferential surface of the cold-rolled steel coil.

As shown in fig. 1 and 2, the second supporting structures 2 are provided with two and respectively located at the upper and lower sides of the first supporting structure 1, the second supporting structures 2 located at the upper and lower sides of the first supporting structure 1 are arranged in a mirror image manner, the second support structure 2 includes a second support frame 21, a second piston 22 disposed in the second support frame 21, a second support rod 23 disposed on the second piston 22, a third piston 201 disposed at an end of the second support rod 23, a seal frame 202, a second elastic plate 24 disposed on the seal frame 202, support plates 25 and a third elastic plate 26 disposed on left and right sides of the second support rod 23, a fourth elastic plate 27 disposed on a radial inner side of the third elastic plate 26, oblique rods 28 disposed on two sides of the second support frame 21, rollers 29 disposed at ends of the oblique rods 28, and a second valve 20 disposed on an axial end face of the second support frame 21. The second support frame 21 is preferably a hollow cuboid, one radial end face of the second support frame 21 is fixedly connected with the outer surface of the first support frame 11, and the other radial end face of the second support frame 21 is provided with an opening. The second piston 22 is housed in the second support frame 21 and is in sliding contact with the inner surface thereof, and the second piston 22 is movable up and down in the second support frame 21. One end of the second support bar 23 passes through the opening and is accommodated in the second support frame 21, the second support bar 23 is in sliding contact with the inner surface of the second support frame 21, and the second support bar 23 can move in the second support frame 21. The third piston 201 is disposed on the other end surface of the second support rod 23, and the third piston 201 is fixedly connected to the second support rod 23. Two end faces in the radial direction of the sealing frame 202 are communicated, the end part of the second support rod 23 is accommodated in the sealing frame 202 and is in sliding contact with the inner surface of the sealing frame, and the third piston 201 is accommodated in the sealing frame 202 and is in sliding contact with the inner surface of the sealing frame 202. The second elastic plate 24 is bent, the sealing frame 202 is fixedly connected with the second elastic plate 24, so as to support the second elastic plate 24, and the second elastic plate 24 is made of an elastic material, so that the second elastic plate can be bent and deformed. The support plate 25 is provided with two and is located respectively the left and right sides of second carriage 21, the one end of support plate 25 with the side fixed connection of second carriage 21, the other end of support plate 25 can push against on the inner circumferential surface of cold-rolled steel coil to play sufficient supporting role to the cold-rolled steel coil. The third elastic plates 26 are two and located on the left and right sides of the second support rod 23, one end of the third elastic plate 26 is fixedly connected to the radial outer surface of the support plate 25, the radial outer surface of the second elastic plate 24 abuts against the radial inner surface of the third elastic plate 26, and the second elastic plate 24 and the third elastic plate 26 are in sliding contact and can slide relatively. The number of the fourth elastic plates 27 is two, the fourth elastic plates 27 are in a curved shape, one end of each fourth elastic plate 27 is fixedly connected with the radial outer surface of the support plate 25, the radial outer surface of each fourth elastic plate 27 abuts against the radial inner surface of the second elastic plate 24 and is in sliding contact with the radial inner surface of the second elastic plate 24, the fourth elastic plates 27 can slide relative to the second elastic plates 24, and the fourth elastic plates 27 can support the second elastic plates 24. The number of the inclined rods 28 is two, one end of each inclined rod 28 is fixedly connected with the radial inner surface of the support plate 25, an included angle between each inclined rod 28 and the first support rod 13 is alpha, and the value of the alpha is 45 degrees. The roller 29 is disposed at the other end of the inclined rod 28, the roller 29 is pivotally connected to the inclined rod 28, so that the roller 29 can rotate at the end of the inclined rod 28, the roller 29 abuts against the radial inner surface of the first elastic plate 14, so that when the second support rod 23 moves radially outward, the inclined rod 28 moves therewith, the first elastic plate 14 is pushed by the roller 29 and moves radially outward, and since the included angle between the inclined rod 28 and the first support rod 13 is 45 degrees, the distance that the second support rod 23 moves radially is the same as the distance that the first support rod 13 moves radially, so that the first elastic plate 14 and the third elastic plate 26 can simultaneously and completely abut against the inner circumferential surface of the cold-rolled steel coil, and sufficient support for cold rolling is ensured. As shown in fig. 2, a second through hole 211 is provided on one axial end surface of the second support frame 21, and the second through hole 211 penetrates through the inner and outer surfaces of the second support frame 21. The second valve 20 is disposed in the second through hole 211 and fixedly connected to the second support frame 21, and the second valve 20 blocks the second through hole 211 and controls air to enter the second support frame 21. The first through hole 111 and the second through hole 211 are respectively located on the side surfaces of the first support frame 11 and the second support frame 21 in the same direction.

The two second supporting structures 2 are respectively arranged at two sides of the first supporting structure 1, so that cold-rolled steel coils can be supported at two ends in the same radial direction, air can be blown towards the inside of the second supporting frame 21, the air pressure in the second supporting frame 21 is increased, the second piston 22 moves in the second supporting frame 21, the second supporting rod 23 moves along the radial direction, and the steel coils with different calibers can be adapted, so that the application range is wide; when the second support rod 23 moves along the radial direction, the movement of the support plate 25 is matched to enable one end of the support plate 25 to be abutted against the inner circumferential surface of the steel coil, so that the steel coil is supported, and the ends of the support plates 25 on the left side and the right side of the second support rod 23 are abutted against the inner circumferential surface of the steel coil at the same time, namely, the second support structure 2 can support the steel coil at two points on the inner circumferential surface of the steel coil at first, so that the steel coil is supported more stably; then, the support plate 25 can move to drive the roller 29 to move through the diagonal rod 28, so that the first elastic plate 14 abuts against the inner circumferential surface of the steel coil, so as to support the steel coil at another angle, and the steel coil is supported more stably; and after the end of the supporting plate 25 is abutted against the inner circumferential surface of the steel coil, the third elastic plate 26 will bend and deform, and the third elastic plate 26 is abutted against the inner circumferential surface of the steel coil, at this time, the third elastic plate 26 will press the second elastic plate 24, the second elastic plate 24 bends and deforms, because the fourth elastic plate 27 is abutted against the second elastic plate 24, the second elastic plate 24 and the fourth elastic plate 27 can directly and indirectly support the third elastic plate 26, and the friction force between the second elastic plate 24 and the third elastic plate 26 as well as between the fourth elastic plate 27 and the second elastic plate 24 can directly or indirectly support the third elastic plate 26, so as to reduce the elastic deformation thereof, thereby realizing the sufficient supporting effect of the third elastic plate 26 on the inner circumferential surface of the steel coil, and through experimental verification, a single elastic plate is designed into the second elastic plate 24, 24, The structures of the third elastic plate 26 and the fourth elastic plate 27 and the matching connection relationship between the third elastic plate and the fourth elastic plate can realize the stable support of the steel coil, the support is more stable, and the effect is more remarkable; and the second elastic plate 24 can move in the radial direction to the center, the gas in the sealing frame 202 is compressed so as to sufficiently support the second elastic plate 24, and prevent the second elastic plate 24 from excessively moving to the center, so that the steel coil support is more stable; meanwhile, the third elastic plate 26 is bent to deform so as to adapt to the radian of the inner circumferential surface of the steel coil with different calibers, so that the third elastic plate 26 can be fully abutted against the inner circumferential surface of the steel coil, thereby effectively reducing the pressure abutted against the inner circumferential surface of the steel coil, and preventing the local part of the steel coil from being bent and deformed due to the excessive pressure caused by the abutting against the inner circumferential surface of the steel coil only by the end part of the supporting plate 25, as shown in fig. 6 and 7, when the second supporting structure 2 rotates to the horizontal direction, the force application condition of a point C abutted against the inner circumferential surface of the steel coil on the third elastic plate 26 to the steel coil 5 can be divided into an upward thrust F1 in the tangential direction and an outward thrust F2 in the radial direction, and the thrust F1 can play a stable supporting role for the steel coil to prevent the steel coil from slipping, thereby not only adapting to the radian of the inner circumferential, and the support is stable, the application range is wide, and the use experience is ideal.

As shown in fig. 2 and 3, the fan structure 3 is provided with one and is disposed at one axial end of the first support frame 11, the fan structure 3 and the first through hole 111 are located at the same side, and the fan structure 3 includes a concentration frame 31, a pipeline 32 disposed on the concentration frame 31, a fan 33 disposed on the pipeline 32, a third valve 34, a second support shaft 36 disposed on the concentration frame 31, and a second bearing 37 disposed on the second support shaft 36. Concentrated frame 31 is hollow form, a side of concentrated frame 31 is equipped with the opening and aligns first through-hole 111 and second through-hole 211 with the side fixed connection of first carriage 11 and second carriage 21, first through-hole 111 with second through-hole 211 is in concentrated frame 31, concentrated frame 31 with first carriage 11 and second carriage 21 form confined space, be equipped with third through-hole 311 on the concentrated frame 31, third through-hole 311 runs through the internal and external surface of concentrated frame 31. One end of the duct 32 is aligned with the third through hole 311 and is fixedly connected to the outer surface of the concentration frame 31 such that the inside of the duct 32 communicates with the inside of the concentration frame 31. The fan 33 is electrically connected with a power supply (not shown) to provide electric energy for the fan, so that the fan can normally operate, and a switch (not shown) is arranged on the fan 33 to conveniently control the fan to be turned on or turned off. The third valve 34 may control the flow of gas in the conduit 32. One end of the second support shaft 36 is fixedly connected to the axial side of the focus frame 31. The second bearing 37 is disposed on the second support shaft 36, and the second support shaft 36 passes through the inside of the second bearing 37 and is fixedly connected with the inner ring thereof. The fan structure 3 further comprises a fixing frame 35 arranged on the centralized frame 31, one end of the fixing frame 35 is fixedly connected with the centralized frame 31, and the other end of the fixing frame 35 is fixedly connected with the fan 33, so that a supporting effect is achieved.

The fan structure 3 can be arranged to draw outside air into the centralized frame 31 through the fan 33, and then enter the first supporting frame 11 and the second supporting frame 21 through the first through hole 111 and the second through hole 211, so as to adjust the moving distance of the first supporting rod 13 and the second supporting rod 23, and further make the first elastic plate 14 and the third elastic plate 26 fully and tightly abut against the inner circumferential surface of the steel coil, thereby fixing the steel coils with different calibers.

As shown in fig. 4 and 5, the cold-rolled steel coil unwinding device further includes a base structure 4 and clamping structures 5 disposed at two axial ends of the first support structure 1.

As shown in fig. 4, the base structure 4 includes a base 41 and a support rod 42 disposed on the base 41. The base 41 is located below the first support structure 1 and the second support structure 2, and the base 41 can be placed on the ground or other positions so as to support the whole device. The support rod 42 is provided with a plurality of support rods, the lower end of the support rod 42 is fixedly connected with the base 41, and the support rods 42 are located on two axial sides of the first support structure 1.

The setting of base structure 4 can play the supporting role to whole device to place it on subaerial or other positions with its is firm, the firm of support for the coil of strip unreels going on smoothly.

As shown in fig. 4 and 5, the clamping structure 5 is provided with two clamping plates 51 respectively located at two axial sides of the first supporting frame 11, and the clamping structure 5 includes a first clamping plate 51, a second clamping plate 52 opposite to the first clamping plate 51, a first fixing rod 53 disposed at one end of the first clamping plate 51, a first connecting rod 54 disposed on the first fixing rod 53, a second connecting rod 55 disposed on the first connecting rod 54, a second fixing rod 56 disposed on the second connecting rod 55, a third fixing rod 58 disposed at the other end of the first clamping plate 51, a connecting frame 59 disposed on the third fixing rod 58, a connecting bolt 50 disposed on the connecting frame 59, and a fourth fixing rod 57 opposite to the third fixing rod 58. The first clamping plate 51 is bent, the upper end of the supporting rod 42 is fixedly connected with the first clamping plate 51 so as to support the first clamping plate 51, and the first bearing 17 and the second bearing 37 are placed in the first clamping plate 51. The second clamping plate 52 is located above the first clamping plate 51, the second clamping plate 52 abuts against the first bearing 17 or the second bearing 37, and the first clamping plate 51 and the second clamping plate 52 can clamp the first bearing 17 or the second bearing 37 firmly. One end of the first fixing rod 53 is fixedly connected with one end of the first clamping plate 51. The lower end of the first connecting rod 54 is fixedly connected with the first fixing rod 53. The lower end of the second connecting rod 55 is pivotally connected to the first connecting rod 54 such that the first connecting rod 54 can rotate relative to the second connecting rod 55. One end of the second fixing rod 56 is fixedly connected to one end of the second clamping plate 52, and the upper end of the second connecting rod 55 is fixedly connected to the second fixing rod 56, so that the second clamping plate 52 and the first clamping plate 51 can rotate relatively. One end of the third fixing rod 58 is fixedly connected to the other end of the first clamping plate 51. The lower end of the connecting frame 59 is fixedly connected with the third fixing rod 58, and the upper end of the connecting frame 59 is provided with an opening. The fourth fixing rod 57 is located above the third fixing rod 58, and one end of the fourth fixing rod 57 is fixedly connected to the other end of the second clamping plate 52. The connecting bolt 50 penetrates through the upper surface and the lower surface of the fourth fixing rod 57 and is in sliding contact with the fourth fixing rod 57, the lower end of the connecting bolt 50 penetrates through the upper end opening of the connecting frame 59 and extends into the connecting frame 59, and the connecting bolt 50 is in threaded connection with the connecting frame 59 so as to play a role in connecting the third fixing rod 58 and the fourth fixing rod 59, so that the first bearing 17 or the second bearing 37 can be conveniently clamped by the first clamping plate 51 and the second clamping plate 52.

The clamping structure 5 can be conveniently clamped by the first bearing 17 or the second bearing 37 stably through the first clamping plate 51 and the second clamping plate 52, and the second clamping plate 52 can be conveniently opened or closed through the connecting bolt 50, so that the first supporting structure 1 and the second supporting structure 2 can be assembled and disassembled, the operation is simple, the use is convenient, the cost is low, and the popularization and the application are suitable.

As shown in fig. 1 to 7, when the unwinding device for cold-rolled steel coils of the present invention is used, the first support frame 11 is first rotated to position one second support structure 2 above, and then the steel coils to be unwound are sleeved on the first support structure 1 and the second support structure 2. Then, the third valve 34 is opened, the second valve 20 and the first valve 15 located above are opened at the same time, then the blower 33 is opened, so that the outside air enters the concentration frame 31 through the pipeline 32, and then enters the second support frame 21 located above through the second through hole 211 located above, so that the second piston 22 moves upwards in the second support frame 21, the second support rod 23 located above moves upwards along with it, then the support plate 25 moves upwards, and the end of the support plate 25 abuts against the steel coil and can drive the steel coil to move upwards, the third elastic plate 26 bends and deforms, the second elastic plate 24 and the fourth elastic plate 27 bend and deform along with it, at this time, the elastic force of the second elastic plate 24 and the fourth elastic plate 27 can directly or indirectly support the third elastic plate 26, and in another aspect, the friction force between the second elastic plate 24 and the third elastic plate 26 and the friction force between the second elastic plate 24 and the fourth elastic plate 27 can directly or indirectly support the third elastic plate 26 The indirect plays stable supporting role to third elastic plate 26, and can make the comprehensive top of third elastic plate 26 lean on the inner circumference of coil of strip, with the coil of strip that adapts to different bore sizes, be favorable to showing to reduce the pressure that leans on the inner circumference of coil of strip, prevent to cause the damage to it, and sealed frame 202 can move to the position that is close to the center on second bracing piece 23, so that make second elastic plate 24 can adapt to the coil of strip of different bore sizes, and play firm supporting role to it simultaneously. Then, when the supporting plate 25 moves upward, the diagonal bar 28 located above the first supporting frame 11 moves upward, and since the roller 29 on the diagonal bar 28 moves upward, the roller 29 pushes the first elastic plates 14 on the left and right sides, so that the first elastic plates 14 on the left and right sides move away from each other, so as to be pushed against the inner circumferential surface of the steel coil by the mutual distance of the first elastic plates 14 on the left and right sides in the horizontal direction, and then the second valve 20 located above is closed. Then, the second valve 20 located below is opened, so that the air in the concentration frame 31 enters into the second support frame 21 located below, so that the second piston 22 and the second support rod 23 located below move downwards, then the support plate 25 located below moves downwards until the end of the support plate 25 abuts against the inner circumferential surface of the steel coil, then the third elastic plate 26 elastically deforms and abuts against the inner circumferential surface of the steel coil, the sealing frame 202 moves upwards on the lower end of the second support rod 23, and then the second elastic plate 24 and the fourth elastic plate 27 bend and deform, so as to sufficiently support the third elastic plate 26. The first valve 15 and the second valve 20 located below are then closed, and the third valve 34 is closed, the fan 33 is turned off. Then, the first bearing 17 and the second bearing 37 are respectively placed on the first clamping plate 51, the second clamping plate 52 abuts against the first bearing 17 or the second bearing 37, the lower end of the connecting bolt 50 is accommodated in the connecting frame 59, and the connecting bolt 50 is rotated to tightly connect the third fixing rod 58 and the fourth fixing rod 57 together, so that the first bearing 17 and the second bearing 37 can be stably clamped. And then unreeling. The whole device is simple in operation process and convenient to use, can adapt to cold-rolled steel coils with different calibers, ensures the unreeling temperature to be carried out, and prevents the occurrence of adverse phenomena such as skidding. Meanwhile, the design of separating the cavity in the first support frame 11 from the cavity in the second support frame 21 is mainly to realize the stable support of the steel coil, when the first support frame 11 rotates to the vertical position, the air in the first support frame 11 moves downward under the action of the first support rod 13, the first piston 12 and the like above under the action of the gravity of the steel coil, so that the gravity center of the whole steel coil moves downward and the stability is poor, when the cavities in the first support frame 11 and the second support frame 21 are separated from each other, when the second support frame 21 is above, the second support frame 21 can play a role of supporting the steel coil stably in the vertical direction to prevent the steel coil from moving downward, and when the second support frame 21 moves to the horizontal position, as shown in fig. 6 and 7, due to the sufficient air pressure in the second support frame 21, can play firm supporting role to the coil of strip through third elastic plate 26 to tangential direction's separation F1 can also prevent that the coil of strip from moving down under the action of gravity, although first support frame 11 is in vertical position this moment, but because the coil of strip gravity most is supported by third elastic plate 26, the gravity of the coil of strip that first elastic plate 14 bore is less, consequently, the coil of strip wholly can not move down, to the support more stability of coil of strip, be favorable to unreeling stable going on. The using process of the cold rolled steel coil unwinding device is described.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.