CN113102547A

CN113102547A - Uncoiler for hot rolled steel coil

Info

Publication number: CN113102547A
Application number: CN202110412858.9A
Authority: CN
Inventors: 赵亮; 叶明明; 哈山虎
Original assignee: Xinjiang Bayi Iron and Steel Co Ltd
Current assignee: Xinjiang Bayi Iron and Steel Co Ltd
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2021-07-13

Abstract

The invention discloses a hot rolled steel coil uncoiler, which comprises a base, wherein one side of the top end of the base is embedded with a bearing in rotary connection, the top end of the bearing is fixedly provided with a rotating table, the rotating table is embedded in the base and is in rotary connection with the base, two sides of the top end of the rotating table are respectively and fixedly provided with a second guide rail, two sides of the top end of the base are respectively and fixedly provided with a first guide rail, the two first guide rails are respectively arranged opposite to the two second guide rails, the two second guide rails are provided with a moving platform and a spring barrel, the spring barrel is connected with a sliding block in a sliding way, and a spring is arranged in the spring barrel. Greatly prolonging the service life of the uncoiling motor.

Description

Uncoiler for hot rolled steel coil

Technical Field

The invention relates to the field of hot rolled steel coil finishing mechanical equipment, in particular to an uncoiler of a hot rolled steel coil.

Background

The well-known uncoiler for hot rolled steel coils is one of special devices for leveling metal plates, and can form an uncoiling, leveling and shearing production line and other plate product production lines together with related devices. One of the functions of the uncoiler is to uncoil the steel strip under the tension, namely, the steel coil is placed on the uncoiler, and the uncoiler rotates the steel coil stably to release the steel coil, so that the steel coil can be subjected to a finishing process.

However, the existing uncoiler has some defects, firstly, because a port for feeding in and out of a steel coil needs to be reserved, only one end of an uncoiled reel part is connected, when the steel coil is uncoiled, the reel part is easily stressed to generate small deformation, although the deformation is small, the uncoiler does rotary motion when working, so that the steel coil can shake when rotating, the integral uncoiling stroke is unstable, and the situations of error in shearing of the steel coil and uneven coiling shapes at two sides occur when finishing shearing is caused, in addition, when the device is in emergency stop and in deceleration motion, the braking effect is achieved only by a reducer at the motor, the service life of the motor is easily reduced when uncoiling is caused, and when the reel blades are expanded, a hydraulic system is removed for control, and the traditional hydraulic control often generates oil leakage situation, the reason is that the hydraulic pipeline joint of the uncoiling mechanism also needs to rotate along with the uncoiling, so that the oil leakage phenomenon is caused, and the uncoiling mechanism for the hot rolled steel coil is required to have strong stability, reduce the loss of an uncoiling motor and avoid the oil leakage.

Disclosure of Invention

In order to solve the existing problems, the invention provides an uncoiler of a hot rolled steel coil.

The invention is realized by the following technical scheme:

a hot rolled steel coil uncoiler comprises a base, wherein a bearing in rotary connection is embedded in one side of the top end of the base, a rotary table is fixedly mounted at the top end of the bearing, the rotary table is embedded in the base and is in rotary connection with the base, second guide rails are fixedly mounted on two sides of the top end of the rotary table respectively, first guide rails are fixedly mounted on two sides of the top end of the base respectively, the two first guide rails are arranged opposite to the two second guide rails respectively, a moving table and a spring cylinder are mounted on the two second guide rails, a sliding block is connected in the spring cylinder in a sliding manner, a spring is arranged in the spring cylinder, the top end of the spring is fixedly connected with the bottom end of the sliding block, a top rod is fixedly mounted at the top end of the sliding block, the top end of the top rod penetrates through the spring cylinder and is in sliding, the improved hydraulic oil tank is characterized in that a plurality of first balls are uniformly installed on the inner annular wall of the sleeve, a power box is fixedly installed on one side of the top end of the base, a support is fixedly installed on one side wall of the power box, a hydraulic oil tank is fixedly installed on the top end of the support, a hydraulic pump is fixedly installed in the hydraulic oil tank, an oil inlet pipe is fixedly installed on one side wall of the hydraulic oil tank, one end of the oil inlet pipe is communicated with the hydraulic oil tank, an oil filling pipe is installed on one side of the top end of the hydraulic oil tank, an oil return pipe is fixedly connected onto one side wall of the hydraulic oil tank, the other end of the oil return pipe penetrates through the power box and is fixedly connected with the power box, a rotary disc in rotary connection is sleeved on the oil return pipe, the rotary disc is embedded into one side wall of the power box and is in, one side of each dovetail block is fixedly connected with a first arc plate, a plurality of T-shaped chutes are arranged on the inner arc walls of the four first arc plates, a T-shaped sliding block is connected in each T-shaped chute in a sliding manner, a connecting ring is fixedly arranged on the other side wall of the rotating disc, a driven gear ring is fixedly sleeved on the outer wall of the connecting ring, an uncoiling motor is fixedly arranged on the inner wall of one side of the power box, a driving gear is fixedly arranged at the output end of the uncoiling motor, the driving gear is meshed with the driven gear ring, a heat dissipation fan is fixedly arranged on the inner bottom surface of the power box, a heat dissipation hole is fixedly arranged at the bottom of one side wall of the power box and communicated with an air outlet of the heat dissipation fan, a stabilizing ring is sleeved on the connecting ring in a laminating manner, the top end and the bottom end of the stabilizing ring are respectively and fixedly connected, one side of one of the connecting frames is fixedly connected with an electric telescopic rod, the other end of the electric telescopic rod is fixedly connected to the inner wall of one side of the power box, a first fixing ring in rotary connection is sleeved outside the connecting ring, the other ends of the two connecting frames are respectively and fixedly connected with the side wall of the first fixing ring, two first rotating rings are fixedly installed on the other side wall of the first fixing ring, one first rotating ring is arranged in the other first rotating ring, the cross section of the first rotating ring is concave, a second rotating ring in sliding connection is inserted into each first rotating ring, a second fixing ring is fixedly connected between the other ends of the two second rotating rings, the second fixing ring is fixedly sleeved on the connecting ring, the other side wall of the second fixing ring is fixedly installed with a lantern ring, and a plurality of rolling second balls are uniformly embedded in the other side wall of the lantern ring, a plurality of friction rings are attached to one side wall of each second fixing ring, each friction ring is arranged between the two second rotating rings, an inserting rod is fixedly mounted on one side wall of each friction ring, the other end of each inserting rod penetrates through the first fixing ring and is in sliding connection with the first fixing ring, a compression spring is sleeved on each inserting rod, one end of each compression spring is fixedly connected with one side of each friction ring, the other end of each compression spring is fixedly connected with the side wall of the first fixing ring, the whole oil inlet pipe is transversely arranged in a U shape, the other end of the oil inlet pipe extends into the oil return pipe, the oil inlet pipe is fixedly connected with the hydraulic oil tank, the other end of the oil inlet pipe penetrates through the power box, a plurality of groups of piston cylinders are uniformly and fixedly connected to the outer wall of the power box, each group of piston cylinders is four, and each group of piston cylinders is distributed on the outer wall of the oil inlet pipe in an, the oil inlet pipe is characterized in that a plurality of oil inlets are uniformly arranged on the outer wall of the oil inlet pipe, each oil inlet is communicated with a corresponding piston cylinder, a piston is in fit sliding connection with the inside of each piston cylinder, the top end of each piston is fixedly connected with a piston rod, the top end of each piston rod penetrates through the corresponding piston cylinder and is in fit sliding connection with the corresponding piston cylinder, a first limiting ring and a second limiting ring are fixedly arranged in each piston cylinder, the piston is arranged between the first limiting ring and the second limiting ring, one end of each piston rod, which penetrates out of the piston cylinder, is fixedly connected with a second arc-shaped plate, the outer arc wall of each second arc-shaped plate is fixedly connected with one end of a corresponding T-shaped sliding block, the other ends of the plurality of piston cylinders respectively penetrate out of the oil return pipe and are fixedly connected with the oil return pipe, a plurality of supporting blocks are uniformly and fixedly connected between the oil inlet pipe, every oil-out all communicates with each other with returning the oil pipe, and the symmetry is provided with the arc cavity in every first arc, and equal sliding connection has the arc stopper in every arc cavity, is provided with the arc between two adjacent first arcs respectively, and the both ends of every arc stretch into respectively in two adjacent arc cavities and with the arc stopper lateral wall fixed connection that sets up in the arc cavity.

Preferably, the base is fixedly connected with the power box through welding.

Preferably, the electric telescopic rod is electrically connected with an external power supply through a circuit.

Preferably, the supporting block is made of hard alloy materials.

Preferably, the diameter of the oil return pipe is 5-6cm larger than that of the oil inlet pipe.

Preferably, the oil outlet is arranged between the first limiting ring and the second limiting ring, and the distance between the oil outlet and the second limiting ring is 1-1.5 cm.

Compared with the prior art, the invention has the beneficial effects that: the stability of the device can be well ensured through the arrangement of the sleeve, the expansion and contraction stability of the four first arc-shaped plates is ensured through the arrangement of the oil inlet pipe and the oil return pipe, the oil leakage condition is avoided, the first fixing ring and other parts are arranged to be matched for use, so that the uncoiling motor is assisted to perform deceleration scram operation, and the service life of the uncoiling motor is greatly prolonged.

Drawings

FIG. 1 is a schematic representation of the structure of the present invention;

FIG. 2 is an enlarged view of a portion of A of FIG. 1 in accordance with the present invention;

FIG. 3 is an enlarged view of a portion of B of FIG. 1 in accordance with the present invention;

FIG. 4 is a pseudo-plan view of C-C of FIG. 1 in accordance with the present invention;

fig. 5 is a right side view of the spinning disk of fig. 1 according to the present invention.

In the figure: the device comprises a base 1, a bearing 2, a rotating table 3, a first guide rail 4, a second guide rail 4-1, a moving platform 5, a spring cylinder 6, a push rod 7, a sleeve 8, a first ball 9, a slider 10, a spring 11, a power box 12, a support 13, a hydraulic oil tank 14, a hydraulic pump 15, an oil inlet pipe 16, an oil return pipe 17, a rotating disc 18, a dovetail groove 19, a dovetail block 20, a first arc-shaped plate 21, a T-shaped sliding groove 22, a T-shaped slider 23, a connecting ring 24, a driven gear ring 25, an uncoiling motor 26, a driving gear 27, a heat radiation fan 28, a heat radiation hole 29, a stabilizing ring 30, an electric telescopic rod 31, a connecting frame 32, an oil inlet 33, a piston cylinder 34, a piston 35, a first limit ring 36, a second limit ring 37, a piston rod 38, a second arc-shaped plate 39, a first fixed ring 40, a first rotating ring 41, a second rotating ring 42, a second fixed, The oil-saving oil pump comprises a lantern ring 47, a second ball 48, a supporting block 49, an oil outlet 50, an arc-shaped cavity 51, an arc-shaped plate 52 and an arc-shaped limiting block 53.

Detailed Description

The invention is described in further detail below with reference to the following detailed description and accompanying drawings:

as shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, a hot rolled steel coil uncoiler comprises a base 1, a bearing 2 of a rotary connection is embedded in one side of the top end of the base 1, a rotary table 3 is fixedly installed at the top end of the bearing 2, the rotary table 3 is embedded in the base 1 and is rotatably connected with the base, second guide rails 4-1 are respectively and fixedly installed at two sides of the top end of the rotary table 3, first guide rails 4 are respectively and fixedly installed at two sides of the top end of the base 1, the two first guide rails 4 are respectively arranged opposite to the two second guide rails 4-1, a movable table 5 and a spring cylinder 6 are installed on the two second guide rails 4-1, a sliding block 10 is connected in the spring cylinder 6, a spring 11 is arranged in the spring cylinder 6, the top end of the spring 11 is fixedly connected with the bottom end of the sliding block 10, the, the top end of the sliding block 10 is fixedly provided with a top rod 7, the top end of the top rod 7 penetrates through the spring cylinder 6 and is in sliding connection with the spring cylinder, one side of the top end of the top rod 7 is fixedly connected with a sleeve 8, the inner annular wall of the sleeve 8 is uniformly provided with a plurality of first balls 9, one side of the top end of the base 1 is fixedly provided with a power box 12, one side wall of the power box 12 is fixedly provided with a support 13, the top end of the support 13 is fixedly provided with a hydraulic oil tank 14, the hydraulic oil tank 14 is internally and fixedly provided with a hydraulic pump 15, one side wall of the hydraulic oil tank 14 is fixedly provided with an oil inlet pipe 16, one end of the oil inlet pipe 16 is communicated with the hydraulic oil tank 14, one side of the top end of the hydraulic oil tank 14 is provided with an oil filling pipe, one side wall of the hydraulic oil tank 14, the oil return pipe 17 is sleeved with a rotating disk 18 in a rotating connection, the rotating disk 18 is embedded in one side wall of the power box 12 and is in rotating connection with the power box, the side wall of the rotating disk 18 is uniformly provided with four dovetail grooves 19, each dovetail groove 19 is internally and slidably connected with a dovetail block 20, one side of each dovetail block 20 is fixedly connected with a first arc-shaped plate 21, the inner arc walls of the four first arc-shaped plates 21 are respectively provided with a plurality of T-shaped sliding grooves 22, each T-shaped sliding groove 22 is internally and slidably connected with a T-shaped sliding block 23, the other side wall of the rotating disk 18 is fixedly provided with a connecting ring 24, the outer wall of the connecting ring 24 is fixedly sleeved with a driven toothed ring 25, the inner wall of one side of the power box 12 is fixedly provided with an uncoiling motor 26, the output end of the uncoiling motor 26 is fixedly provided with a driving gear 27, and the driving, the inner bottom surface of the power box 12 is fixedly provided with a heat radiation fan 28, the bottom of one side wall of the power box 12 is fixedly provided with a heat radiation hole 29, the heat radiation hole 29 is communicated with an air outlet of the heat radiation fan 28, the connecting ring 24 is jointed and sleeved with a stabilizing ring 30, the top end and the bottom end of the stabilizing ring 30 are respectively and fixedly connected with a connecting frame 32, the connecting frame 32 is in an L shape, one side of one connecting frame 32 is fixedly connected with an electric telescopic rod 31, the other end of the electric telescopic rod 31 is fixedly connected with the inner wall of one side of the power box 12, the connecting ring 24 is externally sleeved with a first fixing ring 40 in rotary connection, the other ends of the two connecting frames 32 are respectively and fixedly connected with the side wall of the first fixing ring 40, the other side wall of the first fixing ring 40 is fixedly provided with two first rotating rings 41, one first rotating ring 41 is, the cross section of the first rotating ring 41 is concave, the second rotating ring 42 which is connected in a sliding manner is inserted into each first rotating ring 41, the second fixing ring 43 is fixedly connected between the other ends of the two second rotating rings 42, the second fixing ring 43 is fixedly sleeved on the connecting ring 24, the other side wall of the second fixing ring 43 is fixedly provided with a lantern ring 47, the other side wall of the lantern ring 47 is uniformly embedded with a plurality of rolling second balls 48, one side wall of the second fixing ring 43 is provided with a plurality of friction rings 46 in an attaching manner, each friction ring 46 is arranged between the two second rotating rings 42, one side wall of each friction ring 46 is fixedly provided with an inserting rod 44, the other end of each inserting rod 44 penetrates through the first fixing ring 40 and is connected with the first fixing ring in a sliding manner, each inserting rod 44 is sleeved with a compression spring 45, and one end of each compression spring 45 is fixedly connected with one side of the friction ring 46, the other end of each compression spring 45 is fixedly connected with the side wall of the first fixing ring 40, the whole oil inlet pipe 16 is in a horizontally placed U shape, the other end of the oil inlet pipe 16 extends into the oil return pipe 17, the oil inlet pipe 16 is fixedly connected with the hydraulic oil tank 14, the other end of the oil inlet pipe 16 penetrates through the power box 12, the oil inlet pipe 16 penetrates through the outer wall of the power box 12 and is uniformly and fixedly connected with a plurality of groups of piston cylinders 34, each group of four piston cylinders 34 is distributed on the outer wall of the oil inlet pipe 16 in an annular shape, a plurality of oil inlets 33 are uniformly arranged on the outer wall of the oil inlet pipe 16, each oil inlet 33 is communicated with the corresponding piston cylinder 34, a piston 35 is attached and slidably connected in each piston cylinder 34, the top end of each piston 35 is fixedly connected with a piston rod 38, and the top end of each piston rod 38 penetrates through the corresponding piston cylinder 34 and is attached and slidably connected with, a first limiting ring 36 and a second limiting ring 37 are fixedly installed in each piston cylinder 34, the piston 35 is arranged between the first limiting ring 36 and the second limiting ring 37, one end of each piston rod 38, which penetrates out of the piston cylinder 34, is fixedly connected with a second arc-shaped plate 39, the outer arc wall of each second arc-shaped plate 39 is fixedly connected with one end of the corresponding T-shaped slider 23, the other ends of the plurality of piston cylinders 34 respectively penetrate out of the oil return pipe 17 and are fixedly connected with the oil return pipe 17, a plurality of supporting blocks 49 are uniformly and fixedly connected between the oil inlet pipe 16 and the oil return pipe 17, an oil outlet 50 is fixedly arranged on the outer wall of each piston cylinder 34, each oil outlet 50 is communicated with the oil return pipe 17, an arc-shaped cavity 51 is symmetrically arranged in each first arc-shaped plate 21, an arc-shaped limiting block 53 is slidably connected in each arc-shaped cavity 51, and an arc-shaped plate 52 is arranged between two adjacent first, two ends of each arc-shaped plate 52 extend into the two adjacent arc-shaped cavities 51 respectively and are fixedly connected with the side walls of the arc-shaped limit blocks 53 arranged in the arc-shaped cavities 51.

The base 1 is fixedly connected with the power box 12 through welding.

The electric telescopic rod 31 is electrically connected with an external power supply through a circuit.

The supporting block 49 is made of hard alloy material.

The diameter of the oil return pipe 17 is 5-6cm larger than that of the oil inlet pipe 16.

The oil outlet 50 is arranged between the first limiting ring 36 and the second limiting ring 37, and the distance between the oil outlet 50 and the second limiting ring 37 is 1-1.5 cm.

The working principle is as follows: when the device needs to be used, firstly the device is placed in a working area, then the power supply of each drive in the device is switched on, so that the device is in a standby state, and the device can be normally used, when an uncoiling process is carried out, a steel coil is placed on the mobile station 5, then the mobile station 5 is started to move leftwards (in the direction of the attached drawing 1), and is sleeved on the four first arc-shaped plates 21, at the moment, the hydraulic pump 15 in the hydraulic oil tank 14 is started, so that the hydraulic oil in the hydraulic oil tank 14 is conveyed into the piston cylinders 34 through the oil inlet pipe 16 (a plurality of oil inlets 33 are arranged, so that the hydraulic oil enters the piston cylinders 34, and the piston rods 38 are pushed to move), so that the four first arc-shaped plates 21 are unfolded outwards, and arc-shaped cavities 51 and arc-shaped plates 52 are respectively arranged on the four first arc-shaped plates 21, because the axes of the four first arc-shaped plates 21 are coincident with the axes of the four second arc, thus, the movement of the first arc-shaped plates 21 is not influenced, and the arc-shaped plates 52 can effectively prevent sundries from entering the four first arc-shaped plates 21 to influence the normal use of the device, after the clamping is finished, the uncoiling motor 26 is started, the uncoiling motor 26 drives the driving gear 27 to rotate, so that the driving gear 27 drives the driven toothed ring 25 to rotate, which in turn rotates the connecting ring 24, the rotating disc 18 and the four first arc-shaped plates 21, which in turn rotates the coil of steel, thus completing the unwinding, in between, the mobile station 5 has been reset, and by rotating the rotary station 3, the spring cartridge 6 is rotated 180 degrees, thereby promote spring case 6 and remove for sleeve pipe 8 cover forms the support like this at the one end of returning oil pipe 17, guarantees the normal operating of device, is provided with cooling fan 28 and louvre 29, guarantees that the heat dissipation in headstock 12 is unobstructed.

The second fixed ring 43 is fixedly connected to the connecting ring 24, a collar 47 and second balls 48 are arranged on one side of the second fixed ring 43, so as to reduce the friction force and enable the second fixed ring 43 to be stably stressed, the first fixed ring 40 is sleeved on the connecting ring 24, two first rotating rings 41 and two second rotating rings 42 for limiting are arranged between the first fixed ring 40 and the second fixed ring 43, a friction ring 46 for increasing the friction force is arranged between the two rotating rings, during normal uncoiling movement, the electric telescopic rod 31 is in a retracted state, namely, the friction ring 46 is not attached to the second fixed ring 43, when emergency stop or deceleration movement is carried out, the electric telescopic rod 31 is started to extend, so that the friction ring 46 is attached to the second fixed ring 43, and a compression spring 45 is arranged, the resistance force is larger as the extension length is longer, thereby completing the scram or deceleration work and relieving a part of the pressure of the uncoiling motor 26, thereby indirectly prolonging the service life of the uncoiling motor 26.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A hot rolled steel coil uncoiler comprises a base (1) and is characterized in that; the base is characterized in that a bearing (2) of rotary connection is embedded into one side of the top end of the base (1), a rotary table (3) is fixedly mounted at the top end of the bearing (2), the rotary table (3) is embedded into the base (1) and is rotationally connected with the base, second guide rails (4-1) are fixedly mounted on two sides of the top end of the rotary table (3) respectively, first guide rails (4) are fixedly mounted on two sides of the top end of the base (1) respectively, the two first guide rails (4) are arranged opposite to the two second guide rails (4-1) respectively, a movable table (5) and a spring cylinder (6) are mounted on the two second guide rails (4-1), a sliding block (10) is connected in the spring cylinder (6) in a sliding manner, a spring (11) is arranged in the spring cylinder (6), the top end of the spring (11) is fixedly connected with the bottom end of the sliding block (10), and, the top end of the sliding block (10) is fixedly provided with a push rod (7), the top end of the push rod (7) penetrates through the spring cylinder (6) and is in sliding connection with the spring cylinder, one side of the top end of the push rod (7) is fixedly connected with a sleeve (8), the inner ring wall of the sleeve (8) is uniformly provided with a plurality of first balls (9), one side of the top end of the base (1) is fixedly provided with a power box (12), one side wall of the power box (12) is fixedly provided with a support (13), the top end of the support (13) is fixedly provided with a hydraulic oil tank (14), the hydraulic oil tank (14) is internally and fixedly provided with a hydraulic pump (15), one side wall of the hydraulic oil tank (14) is fixedly provided with an oil inlet pipe (16), one end of the oil inlet pipe (16) is communicated with the hydraulic oil tank (14), one side of the top end of the hydraulic oil tank (14) is provided with an oil inlet, the other end of returning oil pipe (17) passes headstock (12) and rather than fixed connection, it has swivelling joint's rotary disk (18) to overlap on oil pipe (17), rotary disk (18) imbed on the lateral wall of headstock (12) and rather than swivelling joint, evenly be provided with four dovetail (19) on the lateral wall of rotary disk (18), equal sliding connection has dovetail block (20) in every dovetail (19), and the equal fixedly connected with first arc (21) of one side of every dovetail block (20), all is provided with a plurality of T type spouts (22) on the inner arc wall of four first arc (21), and equal sliding connection has T type slider (23) in every T type spout (22), fixed mounting has go-between (24) on another lateral wall of rotary disk (18), driven ring gear (25) have been fixed to have been cup jointed on the outer wall of go-between (24), an uncoiling motor (26) is fixedly mounted on the inner wall of one side of the power box (12), a driving gear (27) is fixedly mounted at the output end of the uncoiling motor (26), the driving gear (27) is meshed with a driven gear ring (25), a heat dissipation fan (28) is fixedly mounted on the inner bottom surface of the power box (12), a heat dissipation hole (29) is fixedly arranged at the bottom of one side wall of the power box (12), the heat dissipation hole (29) is communicated with an air outlet of the heat dissipation fan (28), a stabilizing ring (30) is sleeved on the connecting ring (24) in a laminating manner, connecting frames (32) are respectively and fixedly connected to the top end and the bottom end of the stabilizing ring (30), the connecting frames (32) are L-shaped, one side of one connecting frame (32) is fixedly connected with an electric telescopic rod (31), and the other end of the electric telescopic rod (31) is fixedly connected to the inner wall of, the connecting ring (24) is sleeved with a first fixing ring (40) in rotary connection, the other ends of the two connecting frames (32) are respectively and fixedly connected with the side wall of the first fixing ring (40), the other side wall of the first fixing ring (40) is fixedly provided with two first rotating rings (41), one first rotating ring (41) is arranged in the other first rotating ring (41), the cross section of the first rotating ring (41) is concave, a second rotating ring (42) in sliding connection is inserted into each first rotating ring (41), a second fixing ring (43) is fixedly connected between the other ends of the two second rotating rings (42), the second fixing ring (43) is fixedly sleeved on the connecting ring (24), the other side wall of the second fixing ring (43) is fixedly provided with a lantern ring (47), and a plurality of rolling second balls (48) are uniformly embedded in the other side wall of the lantern ring (47), a plurality of friction rings (46) are arranged on one side wall of the second fixing ring (43) in a fit manner, each friction ring (46) is arranged between the two second rotating rings (42), an inserting rod (44) is fixedly installed on one side wall of each friction ring (46), the other end of each inserting rod (44) penetrates through the first fixing ring (40) and is in sliding connection with the first fixing ring, a compression spring (45) is sleeved on each inserting rod (44), one end of each compression spring (45) is fixedly connected with one side of each friction ring (46), the other end of each compression spring (45) is fixedly connected with the side wall of the first fixing ring (40), the oil inlet pipe (16) is integrally transversely arranged in a U shape, the other end of the oil inlet pipe (16) extends into the oil return pipe (17), the oil inlet pipe (16) is fixedly connected with the hydraulic oil tank (14), and the other end of the oil inlet pipe (16) penetrates through the power box (12), the oil inlet pipe (16) penetrates through the outer wall of the power box (12) and is uniformly and fixedly connected with a plurality of groups of piston cylinders (34), each group of piston cylinders (34) is four, each group of piston cylinders (34) is distributed on the outer wall of the oil inlet pipe (16) in an annular shape, a plurality of oil inlets (33) are uniformly formed in the outer wall of the oil inlet pipe (16), each oil inlet (33) is communicated with the corresponding piston cylinder (34), a piston (35) is connected in the piston cylinder (34) in a fitting and sliding manner, the top end of each piston (35) is fixedly connected with a piston rod (38), the top end of each piston rod (38) penetrates through the corresponding piston cylinder (34) and is connected with the piston cylinder in a fitting and sliding manner, a first limiting ring (36) and a second limiting ring (37) are fixedly installed in each piston cylinder (34), and the piston (35) is arranged between the first limiting ring (36) and the second limiting ring (37), the piston rod (38) penetrates through a second arc-shaped plate (39) at one end outside the piston cylinder (34), the outer arc wall of each second arc-shaped plate (39) is fixedly connected with one end of a corresponding T-shaped sliding block (23), the other ends of the piston cylinders (34) penetrate through the oil return pipe (17) and are fixedly connected with the same, a plurality of supporting blocks (49) are uniformly and fixedly connected between the oil inlet pipe (16) and the oil return pipe (17), an oil outlet (50) is fixedly arranged on the outer wall of each piston cylinder (34), each oil outlet (50) is communicated with the oil return pipe (17), arc-shaped cavities (51) are symmetrically arranged in each first arc-shaped plate (21), arc-shaped limiting blocks (53) are slidably connected in each arc-shaped cavity (51), arc-shaped plates (52) are arranged between two adjacent first arc-shaped plates (21), and two ends of each arc-shaped plate (52) extend into two adjacent arc-shaped cavities (51) and are connected with the arc-shaped cavities (51) The side walls of the arc-shaped limiting blocks (53) arranged in the device are fixedly connected.

2. The hot rolled steel coil uncoiler of claim 1, wherein: the base (1) is fixedly connected with the power box (12) through welding.

3. The hot rolled steel coil uncoiler of claim 1, wherein: the electric telescopic rod (31) is electrically connected with an external power supply through a circuit.

4. The hot rolled steel coil uncoiler of claim 1, wherein: the supporting block (49) is made of hard alloy materials.

5. The hot rolled steel coil uncoiler of claim 1, wherein: the diameter of the oil return pipe (17) is 5-6cm larger than that of the oil inlet pipe (16).

6. The hot rolled steel coil uncoiler of claim 1, wherein: the oil outlet (50) is arranged between the first limiting ring (36) and the second limiting ring (37), and the distance between the oil outlet (50) and the second limiting ring (37) is 1-1.5 cm.