CN208712518U - A kind of coils of hot-rolled steel decoiling equipment of cold-rolled process - Google Patents

Abstract

The utility model discloses a kind of coils of hot-rolled steel decoiling equipments of cold-rolled process, its key points of the technical solution are that: including rack, axisymmetrical in the rack about rack is provided with the feed portion of two groups of promotion feeding rollers, the driving portion of coils of hot-rolled steel on driving feeding roller is additionally provided in the rack, the coils of hot-rolled steel on the feeding roller is after feed portion adjusts height using the driving portion uncoiling in rack；The feed portion includes first servo motor, the first screw rod, dovetails, first bearing seat, the first fixed block, clamping screw and feeding roller, the first servo motor is fixed on the rack, it is rotatablely connected between first screw rod and rack, the dovetails slide be connected in rack along the vertical direction, the dovetail groove for dovetails sliding is offered in the rack, it is connected between first fixed block and bearing block by clamping screw, the coils of hot-rolled steel decoiling equipment structure of cold-rolled process is simple, uncoiling effect is good.

Description

A kind of coils of hot-rolled steel decoiling equipment of cold-rolled process

Technical field

The utility model relates to the decoiling equipment field of coil of strip, in particular to the coils of hot-rolled steel uncoiling of a kind of cold-rolled process fills It sets.

Background technique

Cold rolling is to carry out rolling below recrystallization temperature at normal temperature, cold-rolled steel coils using coils of hot-rolled steel as raw material It is exactly the coil of strip by cold rolling process production.The thickness of cold-rolled steel coils is usually most plant produced between 0.1--8.0mm Cold-rolled steel sheet thickness be 4.5mm hereinafter, thickness, the width of cold-reduced sheet are the capacity of equipment and the market demand according to each factory and It determines.Cold rolling is that steel plate is further rolled to below recrystallization temperature the steel plate being as thin as target thickness at room temperature.With Hot rolled steel plate compares, and cold-rolled steel sheet thickness is more accurate, and surface is smooth, beautiful.Cold rolled sheet has many uses, such as automobile system It makes, electric product, rolling stock, aviation, precision instrument, food cans head etc..

The base-material of cold rolling is coils of hot-rolled steel, and the coils of hot-rolled steel of cold rolling will carry out uncoiling before rolling, then through excessive Group milling train is rolled, carry out being heat-treated later again and etc., to complete cold rolling process.

The Chinese patent of existing Publication No. CN107009714A, it discloses a kind of continous way of metal foil diaphragm plate is automatic Change process units and production method.It is single including upper layer steel plate processing unit, lower layer's steel plate processing unit, recombiner unit, post-processing Member；Upper layer steel plate processing unit include the upper layer steel plate continuity decoiling equipment set gradually according to the transported direction of steel plate, Upper layer steel plate idler roller, upper layer steel plate roll coater, the first slewing rollers of upper layer steel plate, upper layer steel plate heating furnace；The processing of lower layer's steel plate Unit includes the lower layer's steel plate continuity decoiling equipment set gradually according to the transported direction of steel plate, the tensioning of lower layer's steel plate first Roller changes painting machine, changes painting drying oven, lower layer's steel plate roll coater, lower layer's steel plate heating furnace；Recombiner unit includes defeated according to steel plate Conjunction material platform, the hot calender, cooler that the direction sent is set gradually, conjunction material platform respectively with upper layer steel plate heating furnace, lower layer The connection of steel plate heating furnace；Post-processing unit includes the clad steel plate idler roller set gradually according to the transported direction of steel plate, answers It closes steel plate pinch roller, batch unit, piler, the clad steel plate idler roller is connect with cooler.

Although the continous way automatic production device and production method of above-mentioned this metal foil diaphragm plate can be realized metal The continuous and automatic of thin web production, but the uncoiling part-structure in device is complicated, is unfavorable for improving uncoiling efficiency.

Utility model content

Aiming at the problem that mentioning in background technique, the purpose of the utility model is to provide a kind of coils of hot-rolled steel of cold-rolled process Decoiling equipment, its advantage is that: the coils of hot-rolled steel decoiling equipment of cold-rolled process can be adjusted flexibly big in coil of strip to remove in uncoiling Partial internal stress, the coils of hot-rolled steel decoiling equipment structure of cold-rolled process is simple, uncoiling effect is good.

The above-mentioned technical purpose of the utility model has the technical scheme that

A kind of coils of hot-rolled steel decoiling equipment of cold-rolled process, including rack, the axisymmetrical in the rack about rack It is provided with the feed portion of two groups of promotion feeding rollers, the driving portion of coils of hot-rolled steel on driving feeding roller is additionally provided in the rack, Coils of hot-rolled steel on the feeding roller is after feed portion adjusts height using the driving portion uncoiling in rack；

The feed portion includes first servo motor, the first screw rod, dovetails, first bearing seat, the first fixed block, locking Bolt and feeding roller, the first servo motor are fixed on the rack, and are rotatablely connected between first screw rod and rack, described Dovetails slide be connected in rack along the vertical direction, offered in the rack for dovetails sliding dovetail groove, it is described on The both ends of material roller are rotatably connected in first bearing seat respectively, are tethered between first fixed block and bearing block by locking screw It connects；

The driving portion include the second servo motor, upper driven roller, lower driven roller, first gear, second gear, chain, Second bearing seat, cylinder, second servo motor are fixed on the rack, and are fixed on the motor shaft of second servo motor First gear, on the rack, the rack is connected in the rotated down for being located at upper driven roller for the upper driven roller rotation connection Lower driven roller, the second gear are fixed in lower driven roller, pass through chain drive between the first gear and second gear Connection, the both ends of the upper driven roller are rotatably connected in second bearing seat respectively, about the axis pair of rack in the rack Claim to open up there are two the slippage slot that is slid vertically for second bearing seat, the axisymmetrical in the rack about rack is fixed with two The piston rod end of the cylinder body of a cylinder, two cylinders is each attached in second bearing seat.

By using above-mentioned technical proposal, when the coils of hot-rolled steel decoiling equipment using cold-rolled process in cold-rolled process to needing Coils of hot-rolled steel carry out uncoiling when, the first bearing seat at feeding roller both ends is fixed in dovetails by clamping screw, starting First servo motor, first servo motor will drive the rotation of the first screw rod, drive sliding in the dovetail groove of dovetails on the rack, To drive feeding roller to carry out the adjusting of height；Start the second servo motor in rack later, the second servo motor will drive First gear rotation on second servo motor motor shaft, is rotated by chain-driving second gear, drives lower driven roller rotation, When needing one end of coils of hot-rolled steel on coils of hot-rolled steel passing through upper driven roller and lower driven roller, starting cylinder can adjust driving The distance between roller and lower driven roller；After upper driven roller and lower driven roller, starts cylinder, coils of hot-rolled steel is compressed, on Driven roller and lower driven roller will drive coils of hot-rolled steel to advance, to complete uncoiling process；Therefore, the hot-rolled steel of cold-rolled process is wound off Winding apparatus can be adjusted flexibly to remove most internal stress in coil of strip, the coils of hot-rolled steel decoiling equipment of cold-rolled process in uncoiling Structure is simple, uncoiling effect is good.

Preferably, the rack is additionally provided with destressing portion between lifting parts and driving portion, and the destressing portion includes The both ends of first idler roller and the second idler roller, first idler roller and the second idler roller are rotatablely connected on the rack, are opened Coils of hot-rolled steel after volume is coiled into S-shaped by first idler roller and the second idler roller.

By using above-mentioned technical proposal, the first idler roller and the second idler roller in destressing portion can be improved hot-rolled steel Tensile force inside volume, so that the coils of hot-rolled steel inside internal stress after uncoiling is smaller.

Preferably, the rack is additionally provided with guide portion after driving portion, and the guide portion includes the second fixed block, the Two screw rods, third fixed block, T-shaped block, the first guide rack, the second guide rack and third guide rack, about machine in the rack The axisymmetrical of frame is fixed there are two the second fixed block, and sliding connection is fixed there are two third along the vertical direction in the rack Block is respectively and fixedly provided with T-shaped block on two third fixed blocks, opens up that there are two the T shapes slid vertically for T-shaped block in the rack One end of slot, second screw rod is rotatably connected in the second fixed block, screw thread between the third fixed block and the second screw rod Connection, the both ends of first guide rack, the second guide rack and third guide rack are rotatably connected on two thirds respectively and fix In block.

By using above-mentioned technical proposal, third fixed block can be driven in rack by the second screw rod in rotation guide portion Upper to slide vertically, the T-slot in T-shaped block and rack on third fixed block can be led to the vertical sliding of third fixed block To after the first guide rack, the second guide rack and the third guide rack rotated between two third fixed blocks can be to uncoiling Coils of hot-rolled steel carries out guide, there is certain supporting role to the coils of hot-rolled steel after uncoiling.

Preferably, retarder is provided between the first servo motor and the first screw rod.

By using above-mentioned technical proposal, the retarder between first servo motor and the first screw rod can be to the first servo The output speed of motor is slowed down, so that the rotation of the first screw rod is more steady.

Preferably, the first protective cover is fixed in the rack, first protective cover is located at first servo motor and subtracts The outside of fast device.

By using above-mentioned technical proposal, the first fixed protective cover can protect first servo motor and retarder in rack Safety.

Preferably, the second protective cover is fixed in the rack, second protective cover is located at the outer of the second servo motor Portion.

By using above-mentioned technical proposal, the protective cover outside the second servo motor can protect the peace of the second servo motor Entirely.

Preferably, several heat release holes are offered on first protective cover and the second protective cover.

By using above-mentioned technical proposal, the heat release hole on the first protective cover and the second protective cover can be for the first servo electricity Machine and the heat dissipation of the second servo motor, improve the service life of first servo motor and the second servo motor.

Preferably, the bottom of the rack is about the axisymmetrical setting of rack there are four self-locking universal wheel.

By using above-mentioned technical proposal, the self-locking universal wheel of bottom of the frame enables to device that can push, and improves dress The flexibility set.

Preferably, second screw rod is fixed with disk in one end far from the second fixed block, and bias is solid on the disk Surely there is handlebar stem.

By using above-mentioned technical proposal, it can be facilitated by the handlebar stem in rotating circular disc and drive the rotation of the second screw rod, adjusted It saves more laborsaving when the height of third fixed block.

In conclusion the utility model mainly has the advantages that

The coils of hot-rolled steel decoiling equipment of cold-rolled process can be adjusted flexibly in uncoiling with remove in coil of strip it is most in answer Power, the coils of hot-rolled steel decoiling equipment structure of cold-rolled process is simple, uncoiling effect is good.

Detailed description of the invention

Fig. 1 is one of the structural schematic diagram of the coils of hot-rolled steel decoiling equipment of cold-rolled process；

Fig. 2 is enlarged drawing at C in Fig. 1；

Fig. 3 is the second structural representation of the coils of hot-rolled steel decoiling equipment of cold-rolled process；

Fig. 4 is enlarged drawing at D in Fig. 1；

Fig. 5 is the third structural representation of the coils of hot-rolled steel decoiling equipment of cold-rolled process；

Fig. 6 is enlarged drawing at E in Fig. 1；

Fig. 7 is that structure of the coils of hot-rolled steel decoiling equipment of cold-rolled process after hiding the first protective cover and the second protective cover is shown It is intended to；

Fig. 8 is enlarged drawing at F in Fig. 7；

Fig. 9 is enlarged drawing at G in Fig. 7;

Figure 10 is the structure sectional view of the coils of hot-rolled steel decoiling equipment of cold-rolled process.

Appended drawing reference: 1, rack；2, feed portion；3, driving portion；4, destressing portion；5, guide portion；6, first servo motor； 7, the first screw rod；8, dovetails；9, first bearing seat；10, the first fixed block；11, clamping screw；12, dovetail groove；13, second Servo motor；15, upper driven roller；16, lower driven roller；17, second gear；18, chain；19, second bearing seat；20, cylinder； 21, slippage slot；22, the first idler roller；23, the second idler roller；24, the second fixed block；25, the second screw rod；26, third is fixed Block；27, T-shaped block；28, the first guide rack；29, the second guide rack；30, third guide rack；31, T-slot；32, retarder；33, First protective cover；34, the second protective cover；35, heat release hole；36, self-locking universal wheel；37, disk；38, handlebar stem；39, the first tooth Wheel；40, feeding roller.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, to the technical solution in the utility model carry out it is clear, It is fully described by, it is clear that described utility model is only the utility model a part of the embodiment, rather than whole implementation Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work The every other embodiment obtained, fall within the protection scope of the utility model.

Such as Fig. 1 to Figure 10, a kind of coils of hot-rolled steel decoiling equipment of cold-rolled process, including rack 1, wherein being closed in rack 1 The axisymmetrical of rack 1 is provided with the feed portion 2 of two groups of promotion feeding rollers 40, feed portion 2 is used for as required for cold-rolled process Coils of hot-rolled steel feeding；The driving portion 3 of coils of hot-rolled steel on driving feeding roller 40 is additionally provided in rack 1 simultaneously, driving portion 3 is The uncoiling process of coils of hot-rolled steel provides driving force；Wherein the coils of hot-rolled steel on feeding roller 40 by feed portion 2 adjust height after again By 3 uncoiling of driving portion in rack 1；Wherein feed portion includes first servo motor 6, the first screw rod 7, dovetails 8, first axle It holds seat 9, the first fixed block 10, clamping screw 11 and feeding roller 40, first servo motor 6 to be fixed in rack 1, the first screw rod 7 It is rotatablely connected between rack 1, first servo motor 6 drives the rotation of the first screw rod 7, in order to guarantee what feeding roller 40 slid vertically Dovetails 8 are slid along the vertical direction and are connected in rack 1 by stability, and are offered in rack 1 for the sliding of dovetails 8 The both ends of feeding roller 40 are rotatably connected in first bearing seat 9 by dovetail groove 12 respectively, by the first fixed block 10 and bearing block it Between by clamping screw 11 connect in order to which feeding roller 40 is together with the disassembly of first bearing seat 9；Wherein driving portion 3 is watched including second Take motor 13, upper driven roller 15, lower driven roller 16, first gear 39, second gear 17, chain 18, second bearing seat 19, cylinder 20, wherein the second servo motor 13 is fixed in rack 1, first gear will be fixed on the motor shaft of the second servo motor 13 39, and upper driven roller 15 is rotatably connected in rack 1, and is connected in rack 1 in the rotated down for being located at upper driven roller 15 Second gear 17 is fixed in lower driven roller 16 by lower driven roller 16, will pass through chain between first gear 39 and second gear 17 Item 18 is sequentially connected, and the both ends of upper driven roller 15 are rotatably connected on respectively in second bearing seat 19, and closes in rack 1 It opens up in the axisymmetrical of rack 1 there are two the slippage slot 21 slid vertically for second bearing seat 19, second bearing seat 19 is in cunning It moves in slot 21 and slides vertically, can guarantee stability when driven roller 15 is adjusted, and the axis pair in rack 1 about rack 1 Claim to fix the cylinder body there are two cylinder 20, the piston rod end of two cylinders 20 is each attached in second bearing seat 19, utilizes Cylinder 20 drives the adjusting of the progress height of second bearing seat 19；When the coils of hot-rolled steel decoiling equipment using cold-rolled process is to cold-rolled When the coils of hot-rolled steel needed in journey carries out uncoiling, the first bearing seat 9 at 40 both ends of feeding roller is fixed on by clamping screw 11 In dovetails 8, start first servo motor 6, first servo motor 6 will drive the first screw rod 7 to rotate, drive dovetails 8 in machine Sliding in dovetail groove 12 on frame 1, to drive the adjusting of the progress height of feeding roller 40；Second started in rack 1 later is watched Motor 13 is taken, the second servo motor 13 will drive the first gear 39 on 13 motor shaft of the second servo motor to rotate, pass through chain 18 drive second gears 17 to rotate, and lower driven roller 16 is driven to rotate, when needing one end by coils of hot-rolled steel on coils of hot-rolled steel to pass through When upper driven roller 15 and lower driven roller 16, starting cylinder 20 can adjust the distance between driven roller 15 and lower driven roller 16；It wears It crosses after driven roller 15 and lower driven roller 16, starts cylinder 20, coils of hot-rolled steel is compressed, upper driven roller 15 and lower driven roller 16 Driving coils of hot-rolled steel is advanced, to complete uncoiling process；Therefore, the coils of hot-rolled steel decoiling equipment of cold-rolled process energy in uncoiling It is adjusted flexibly to remove most internal stress in coil of strip, the coils of hot-rolled steel decoiling equipment structure of cold-rolled process is simple, uncoiling is imitated Fruit is good.

As shown in Figures 1 to 10, it is additionally provided with destressing portion 4 between the lifting parts 2 of rack 1 and driving portion 3, wherein going Stress portion 4 includes the first idler roller 22 and the second idler roller 23, and the both ends of the first idler roller 22 and the second idler roller 23 are turned Dynamic to be connected in rack 1, the coils of hot-rolled steel after uncoiling is coiled into S-shaped, destressing by the first idler roller 22 and the second idler roller 23 The first idler roller 22 and the second idler roller 23 in portion 4 can be improved the tensile force inside coils of hot-rolled steel, so that the heat after uncoiling Internal stress is smaller inside rolled steel coils；It is additionally provided with guide portion 5 after the driving portion 3 of rack 1 simultaneously, wherein guide portion 5 includes Second fixed block 24, the second screw rod 25, third fixed block 26, T-shaped block 27, the first guide rack 28, the second guide rack 29 and Three guide racks 30, about the axisymmetrical fixation of rack 1, there are two the second fixed blocks 24 in rack 1, along vertical in rack 1 There are two third fixed blocks 26 for direction sliding connection, in order to enable the stabilization that third fixed block 26 slides, is fixed in two thirds It is respectively and fixedly provided with T-shaped block 27 on block 26, and opens up in rack 1 that there are two the T-slots 31 slid vertically for T-shaped block 27, and will One end of second screw rod 25 is rotatably connected in the second fixed block 24, and screw thread between third fixed block 26 and the second screw rod 25 is connected It connects, the second screw rod 25 of rotation will drive third fixed block 26 to slide vertically in rack 1, and by the first guide rack 28, second The both ends of guide rack 29 and third guide rack 30 are rotatably connected on respectively in two third fixed blocks 26, by rotating guide portion The second screw rod 25 in 5 can drive third fixed block 26 to slide vertically in rack 1,27 He of T-shaped block on third fixed block 26 T-slot 31 in rack 1 can be oriented to the vertical sliding of third fixed block 26, be rotated between two third fixed blocks 26 The first guide rack 28, the second guide rack 29 and third guide rack 30 can to the coils of hot-rolled steel after uncoiling carry out guide, it is right Coils of hot-rolled steel after uncoiling has certain supporting role.

As shown in Figures 1 to 10, retarder 32, the first servo are provided between first servo motor 6 and the first screw rod 7 Retarder 32 between motor 6 and the first screw rod 7 can slow down to the output speed of first servo motor 6, so that first Screw rod 7 rotates more steady；The first protective cover 33 is fixed in rack 1 simultaneously, wherein the first protective cover 33 is located at first The outside of servo motor 6 and retarder 32, the first fixed protective cover 33 can protect first servo motor 6 and slow down in rack 1 The safety of device 32；And the second protective cover 34 is fixed in rack 1, wherein the second protective cover 34 is located at the second servo motor 13 Outside, the protective cover outside the second servo motor 13 can protect the safety of the second servo motor 13；Simultaneously in the first protective cover 33 and second offer several heat release holes 35, the heat release hole 35 on the first protective cover 33 and the second protective cover 34 on protective cover 34 It can radiate for first servo motor 6 and the second servo motor 13, improve making for first servo motor 6 and the second servo motor 13 Use the service life；It is arranged simultaneously about the axisymmetrical of rack 1 there are four self-locking universal wheel 36 in the bottom of rack 1,1 bottom of rack Self-locking universal wheel 36 enables to device that can push, and improves the flexibility of device；And by the second screw rod 25 far from second One end of fixed block 24 is fixed with disk 37, and bias is fixed with handlebar stem 38 on disk 37, passes through the handle in rotating circular disc 37 Hand lever 38, which can facilitate, drives the rotation of the second screw rod 25, adjusts more laborsaving when the height of third fixed block 26.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (9)

1. a kind of coils of hot-rolled steel decoiling equipment of cold-rolled process, including rack (1), it is characterised in that: on the rack (1) about The axisymmetrical of rack (1) is provided with the feed portion (2) of two groups of promotion feeding rollers (40), is additionally provided with drive on the rack (1) The driving portion (3) of coils of hot-rolled steel on feeding roller (40) is moved, the coils of hot-rolled steel on the feeding roller (40) is adjusted by feed portion (2) Using driving portion (3) uncoiling on rack (1) after height；

The feed portion (2) includes first servo motor (6), the first screw rod (7), dovetails (8), first bearing seat (9), first Fixed block (10), clamping screw (11) and feeding roller (40), the first servo motor (6) are fixed on rack (1), and described It is rotatablely connected between one screw rod (7) and rack (1), the dovetails (8) slide along the vertical direction to be connected in rack (1), institute The dovetail groove (12) offered on rack (1) for dovetails (8) sliding is stated, the both ends of the feeding roller (40) are rotatablely connected respectively In first bearing seat (9), connected between first fixed block (10) and bearing block by clamping screw (11)；

The driving portion (3) include the second servo motor (13), upper driven roller (15), lower driven roller (16), first gear (39), Second gear (17), chain (18), second bearing seat (19), cylinder (20), second servo motor (13) are fixed on rack (1) it on, is fixed with first gear (39) on the motor shaft of second servo motor (13), upper driven roller (15) rotation connects It connects on rack (1), the rack (1) is connected with lower driven roller (16) in the rotated down for being located at upper driven roller (15), described Second gear (17) is fixed on lower driven roller (16), passes through chain between the first gear (39) and second gear (17) (18) it is sequentially connected, the both ends of the upper driven roller (15) are rotatably connected on respectively in second bearing seat (19), the rack (1) On about the axisymmetrical of rack (1) open up that there are two the slippage slot (21) that slides vertically for second bearing seat (19), the machines The cylinder body there are two cylinder (20), the piston rod of two cylinders (20) are fixed about the axisymmetrical of rack (1) on frame (1) End is each attached on second bearing seat (19).

2. a kind of coils of hot-rolled steel decoiling equipment of cold-rolled process according to claim 1, it is characterised in that: the rack (1) it is additionally provided between feed portion and driving portion (3) destressing portion (4), the destressing portion (4) includes the first idler roller (22) and the second idler roller (23), the both ends of first idler roller (22) and the second idler roller (23) are rotatably connected on rack (1) on, the coils of hot-rolled steel after uncoiling is coiled into S-shaped by first idler roller (22) and the second idler roller (23).

3. a kind of coils of hot-rolled steel decoiling equipment of cold-rolled process according to claim 1, it is characterised in that: the rack (1) it is additionally provided with guide portion (5) after driving portion (3), the guide portion (5) includes the second fixed block (24), the second screw rod (25), third fixed block (26), T-shaped block (27), the first guide rack (28), the second guide rack (29) and third guide rack (30), axisymmetrical on the rack (1) about rack (1) is fixed there are two the second fixed block (24), on the rack (1) Along the vertical direction there are two sliding connections third fixed block (26), T-shaped block is respectively and fixedly provided on two third fixed blocks (26) (27), it is opened up on the rack (1) there are two the T-slot (31) slid vertically for T-shaped block (27), second screw rod (25) One end is rotatably connected in the second fixed block (24), is threadedly coupled between the third fixed block (26) and the second screw rod (25), The both ends of first guide rack (28), the second guide rack (29) and third guide rack (30) are rotatably connected on two respectively In three fixed blocks (26).

4. a kind of coils of hot-rolled steel decoiling equipment of cold-rolled process according to claim 1, it is characterised in that: described first watches It takes and is provided with retarder (32) between motor (6) and the first screw rod (7).

5. a kind of coils of hot-rolled steel decoiling equipment of cold-rolled process according to claim 4, it is characterised in that: the rack (1) it is fixed on the first protective cover (33), first protective cover (33) is located at first servo motor (6) and retarder (32) It is external.

6. a kind of coils of hot-rolled steel decoiling equipment of cold-rolled process according to claim 5, it is characterised in that: the rack (1) it is fixed on the second protective cover (34), second protective cover (34) is located at the outside of the second servo motor (13).

7. being existed according to claim 5 or a kind of coils of hot-rolled steel decoiling equipment of cold-rolled process as claimed in claim 6, feature In: several heat release holes (35) are offered on first protective cover (33) and the second protective cover (34).

8. a kind of coils of hot-rolled steel decoiling equipment of cold-rolled process according to claim 1, it is characterised in that: the rack (1) bottom about rack (1) axisymmetrical setting there are four self-locking universal wheel (36).

9. a kind of coils of hot-rolled steel decoiling equipment of cold-rolled process according to claim 3, it is characterised in that: second spiral shell Bar (25) is fixed with disk (37) in one end far from the second fixed block (24), and bias is fixed with handlebar stem on the disk (37) (38).