Steel coil inner ring pulling-out device

Abstract

The invention provides a steel coil inner ring pulling-out device. The steel coil inner ring pulling-out device comprises a pulling-out device. The drawing device comprises a base, an electric hoist and a remote controller; the electric hoist is mounted on the base and is used for pulling out an inner ring of a steel coil; the electric hoist comprises a winding drum, a chain and a motor; one end of the chain is wound on the winding drum, and the other end of the chain is detachably connected with the strip head of the inner ring of the steel coil; the remote controller is electrically connected with the motor and used for driving the winding drum to rotate to achieve winding and unwinding of the chain. The remote controller is used for remotely controlling the motor to drive the chain to retract, so that the steel coil inner ring is pulled out, the steel coil inner ring pulling-out operation intensity is reduced, the steel coil inner ring is prevented from bouncing and hurting workers through remote control, and the operation safety is improved.

Description

Technical Field

[0001] The invention belongs to the field of steel coil inner ring repair, and in particular relates to a steel coil inner ring pulling device. Background Art

[0002] In order to facilitate storage and transportation, steel mills generally process steel plates into steel coils for sale. However, due to changes in processing equipment and customer needs, some processed steel coils have inner ring diameters that are too small and / or inner ring defects such as roller marks, edge cracks, and dovetails at the inner ring head, which must be repaired.

[0003] At present, the main method for repairing such inner ring defects is to cut the inner ring strip to remove the inner ring defects. In order to cut the inner ring strip, the inner ring strip to be cut must be completely pulled out first. The specific operation is: the repairer inserts the pry bar into the hole cut in advance on the inner ring of the steel coil, and then holds the pry bar and rotates it several times before pulling it out, which requires great labor intensity; moreover, as the inner ring of the steel coil is tightened and the number of coiling turns increases, the elastic potential energy of the inner ring of the coiled steel coil will continue to increase, and it is very easy for the steel coil to rebound the pry bar, which poses a great safety hazard. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a steel coil inner ring pulling-out device to reduce the intensity of the inner coil pulling-out operation and improve the safety of the inner coil pulling-out operation.

[0005] The present invention provides a device for pulling out the inner ring of a steel coil, comprising a pulling and drawing device; the pulling and drawing device comprises a base, an electric hoist and a remote control; the electric hoist is installed on the base, and is used for pulling out the inner ring of the steel coil; the electric hoist comprises a drum, a chain and a motor; one end of the chain is wound around the drum, and the other end of the chain is detachably connected to the belt head of the inner ring of the steel coil; the remote control is electrically connected to the motor, and is used for driving the drum to rotate to realize the retraction and extension of the chain; the present invention uses a remote control to remotely control the motor to drive the chain to retract, thereby pulling out the inner ring of the steel coil, which not only reduces the intensity of the operation of pulling out the inner ring of the steel coil, but also uses remote control to avoid the inner ring of the steel coil from rebounding and injuring the staff, thereby improving the operation safety.

[0006] Preferably, the lifting mechanism is an electric lifting mechanism, a hydraulic lifting mechanism, a pneumatic lifting mechanism, or a manual lifting mechanism; the steel plant can determine it according to needs.

[0007] Preferably, the electric hoist is installed on the base through a lifting mechanism; the lifting mechanism is used to adjust the height of the electric hoist to meet the needs of pulling inner rings of steel rings with different inner diameters.

[0008] Preferably, casters with brakes are provided at the bottom of the base to facilitate the movement of the electric hoist.

[0009] Preferably, the base is also provided with a positioning device cooperating with the ground anchor, so that after the base is moved into position, the ground anchor and the positioning device are connected and locked by a plug rod to prevent the base from moving back and forth during the operation of the electric hoist, thereby improving the operation stability.

[0010] Preferably, the steel coil inner ring pulling-out device comprises a protective device arranged between the electric hoist and the steel coil to be repaired; the protective device comprises a left baffle wall and a right baffle wall arranged opposite to each other; the left baffle wall and the right baffle wall cooperate to limit the rebound range of the inner ring of the pulled-out steel coil, so as to avoid the pulled-out steel coil rebounding and injuring nearby personnel due to the steel coil head not being tightened.

[0011] Preferably, the protective device includes a bottom wall for placing waste; the bottom wall, the left baffle wall and the right baffle wall together form a accommodating space for accommodating the inner ring of the pulled-out steel coil; the waste is the inner ring of the steel coil that has been cut off; the waste is collected in a centralized manner through the bottom wall, which is convenient for subsequent recycling.

[0012] Preferably, casters with brakes are provided at the bottom of the bottom wall to facilitate the movement of the protective device.

[0013] Preferably, a hook hole is provided on the belt head of the inner circle of the steel coil, and a hook matching with the hook hole is provided on the end of the chain away from the drum; the hook hole is hooked by the hook to realize the connection between the chain and the belt head.

[0014] Preferably, the hook is hinged to the chain.

[0015] As described above, the present invention relates to a steel coil inner ring pulling-out device, which remotely controls an electric hoist to pull out the inner ring of the steel coil, thereby reducing injuries to personnel caused by the rebound of the inner ring of the steel coil, and reducing the work intensity of operators when pulling out the inner ring of the steel coil, thereby improving work efficiency; in addition, the setting of the lifting mechanism effectively meets the pulling-out requirements of steel rings with different inner diameters; and the setting of the protective device further improves the work safety, while realizing the centralized collection of cutting waste, which not only facilitates the subsequent recycling of waste, but also ensures the cleanliness of operations at the construction site. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the pulling device in the steel coil inner ring pulling device of the present invention.

[0017] Figure 2 for Figure 1 Right view of .

[0018] Figure 3 for Figure 2 Top view of the .

[0019] Figure 4 It is a three-dimensional diagram of the pulling device.

[0020] Figure 5 It is a schematic diagram of the structure of the protective device.

[0021] Figure 6 This is a diagram of the use status of the steel coil inner ring pulling device.

[0022] Description of reference numerals:

[0023] Steel coil 01, base 1, casters 11, positioning device 12, electric hoist 2, drum box 21, motor 22, chain 23, hook 24, vertical guide rail 31, top plate 32, lifting screw 33, nut 34, lifting seat 35, rocker 36, protective device 4, left baffle wall 41, right baffle wall 42, bottom wall 43, front baffle wall 44, rear baffle wall 45. DETAILED DESCRIPTION

[0024] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0025] It should be noted that the proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification, change in the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical content disclosed by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of the relative relationship, without substantially changing the technical content, should also be regarded as the scope of the implementation of the present invention.

[0026] If the processed steel coil has the inner ring diameter that is too small, or the inner ring has roller marks, edge cracks and other inner ring defects at the head of the inner ring, the inner ring needs to be repaired. The current inner ring repair operation is actually to pull out the inner ring of the steel coil to cut off the excess inner ring of the steel coil or cut off the inner ring part with inner ring defects such as roller marks and edge cracks to ensure the quality of the entire steel coil. However, the current method of pulling out the inner ring of the steel coil is: the steel coil repair personnel insert the pry bar into the hole cut in advance in the inner ring of the steel coil, and then pull it out after rotating the pry bar several times. The entire rotation and pulling out process is completely completed by manpower, which has a large labor intensity; moreover, as the inner ring of the steel coil is tightened and the number of coiling turns increases, the elastic potential energy of the inner ring of the steel coil pulled out by the coiling also increases. Once the repair personnel do not hold the pry bar tightly, the pry bar will rebound and hit the repair personnel under the action of the steel coil, posing a large safety hazard. Based on this, the present invention proposes a steel coil inner ring pulling device, which replaces manpower to pull out the inner ring of the steel coil while improving the safety of the operation.

[0027] like Figures 1 to 4 As shown, the steel coil inner ring pulling device of the present invention comprises a pulling device; wherein the pulling device comprises a base 1, an electric hoist 2 mounted on the base 1 and a remote controller; the electric hoist 2 comprises a drum, a chain 23 and a motor 22; the drum is rotatably mounted in a drum box 21; the motor 22 is mounted on the drum box 21 and is used to drive the drum to rotate; one end of the chain 23 extends into the drum box 21 to be wound around the drum, and the other end of the chain 23 is detachably connected to the belt head of the steel coil inner ring; the remote controller is electrically connected to the motor 22; When it is necessary to pull out the inner ring of the steel coil, it is only necessary to connect the chain 23 to the lead of the inner ring of the steel coil, and then use the remote control to control the motor 22 to rotate the drum to retract the chain 23. In this way, the inner ring of the steel coil will be pulled out under the action of the chain 23. Since the entire pulling-out power is provided by the motor 22, the labor intensity of the repair personnel is reduced. And by using the remote control to control the motor 22, the repair personnel can pull out the inner ring of the steel coil at a distance from the pulling device, reducing the risk of accidental injury to the repair personnel by the rebound of the inner ring of the steel coil.

[0028] The chain 23 is connected to the belt head of the inner ring of the steel coil by a hook 24 or a clamp, which is not limited to this; based on cost considerations, this embodiment preferably uses the hook 24 for connection, that is, a hook hole is opened on the belt head of the inner ring of the steel coil, and the hook 24 is installed on the end of the chain 23 away from the reel, and the hook 24 cooperates with the hook hole to achieve a detachable connection between the chain 23 and the inner ring of the steel coil.

[0029] In order to prevent the chain 23 from being entangled during the pulling process, the hook 24 and the chain are preferably connected by a hinge.

[0030] In order to realize the inner ring pulling operation of steel coils with different inner diameters, a lifting mechanism for adjusting the height of the electric hoist 2 is provided on the base 1; the lifting mechanism can be an electric lifting mechanism (such as an electric push rod, etc.) or a hydraulic lifting mechanism (such as a hydraulic cylinder, etc.) or a pneumatic lifting mechanism (such as a cylinder, etc.) or a manual lifting mechanism, without limitation. Based on cost considerations, this embodiment preferably uses a manual lifting mechanism.

[0031] It can be understood that the manual lifting mechanism is a manual screw lifting mechanism (i.e. a linear motion device composed of structures such as a screw rod and a nut) or a manual rack lifting mechanism (i.e. a linear motion device composed of structures such as a gear, a rack, and a brake) and other existing manual lifting mechanisms. There is no limitation on this. In this embodiment, a manual screw lifting mechanism is preferably used.

[0032] Specifically, Figures 1 to 3As shown, the manual screw-type lifting mechanism adopted in this embodiment includes a vertical guide rail 31, a guide rail mounting frame, a lifting seat 35, a lifting screw rod 33 and a nut screwed onto the lifting screw rod 33; wherein the vertical guide rail 31 is mounted on the top of the base 1 through the guide rail mounting frame, and the lifting seat 35 is slidably mounted on the vertical guide rail 31 and fixedly connected to the drum box 21 of the electric hoist 2; the guide rail mounting frame includes a guide rail mounting plate and a top plate 32 located above the vertical guide rail 31, and the top plate 32 is used to install the nut on the lifting screw rod 33; the bottom end of the lifting screw rod 33 is rotatably connected to the lifting seat 35 below the top plate 32 through a bearing, and the top end of the lifting screw rod 33 is fixedly connected to the rocker 36 above the top plate 32; in this way, when the height position of the electric hoist 2 needs to be adjusted, it is only necessary to rotate the rocker 36. Since the nut is fixed in position, when the rocker 36 rotates, the lifting screw 33 will rotate while moving up and down (i.e., axial movement); since the lifting screw 33 is connected to the lifting seat 35 through a bearing, and the lifting seat 35 can only move up and down under the restriction of the vertical guide rail 31, therefore, when the lifting screw 33 rotates while moving up and down, the lifting seat 35 moves up and down with the lifting screw 33, thereby realizing the adjustment of the height position of the electric hoist 2.

[0033] In order to improve the aesthetics of the pulling device, the guide rail mounting frame also includes a left enclosure plate and a right enclosure plate, and the guide rail mounting plate, the left enclosure plate, the right enclosure plate, the top plate 32 and the top of the base 1 are together enclosed to form a shell with an open front, which covers the reel box 21, the motor 22, the lifting seat 35 and the vertical guide rail 31.

[0034] like Figure 1 and Figure 2 As shown, in order to facilitate the movement of the entire pulling device, casters 11 with brakes need to be provided at the bottom of the base 1.

[0035] like Figure 3 As shown, in order to ensure the stability of the base 1 after it is moved into place, a positioning device that cooperates with the ground anchor is provided at the front of the base 1, so that after the base 1 is moved into place, the insertion rod is inserted into the positioning device and the ground anchor to achieve relative locking of the ground anchor and the base 1, thereby preventing the base 1 from moving during the entire inward rolling and pulling process.

[0036] like Figure 5 and Figure 6 As shown, the steel coil inner ring pulling device also includes a protective device 4 arranged between the electric hoist 2 and the steel coil 01 to be repaired; the protective device 4 includes a left wall and a right wall arranged relatively to each other; the left wall and the right wall cooperate to limit the rebound range of the pulled-out steel coil inner ring to avoid the pulled-out steel coil from rebounding and injuring nearby personnel due to the steel coil head not being tightened.

[0037] Furthermore, the protective device includes a bottom wall 43 for placing waste, and the bottom wall 43, the left side wall 41, and the right side wall 42 together form a accommodating space for accommodating the inner ring of the pulled-out steel coil; wherein the waste is the inner ring of the steel coil that has been cut off; the waste is collected in a centralized manner through the bottom wall 43, which is convenient for subsequent recycling.

[0038] Furthermore, the protective device also includes a front baffle wall 44 and a rear baffle wall 45, which cooperate to intercept the waste placed on the bottom wall 43 to prevent the waste from slipping out of the protective device 4 during transportation; in order to prevent the front baffle wall 44 and the rear baffle wall 45 from interfering with the normal pulling operation, their top position must be lower than the low position of the inner circle of the steel coil.

[0039] In order to facilitate movement, the bottom of the protective device must be equipped with casters with brakes.

[0040] like Figure 6 As shown, when the inner ring of the steel coil 01 (the steel coil 01 is heavier, generally 10 tons) needs to be repaired, the steel coil 01 needs to be hoisted to the saddle (not shown) at the repair site first, and then the protective device 4 is moved to the rear of the saddle, and the base 1 is moved to the rear of the protective device 4 for fixation; the rocker 36 is rotated to adjust the height position of the electric hoist 2 on the base 1, so that the chain outgoing position of the electric hoist 2 is close to the center of the steel coil on the saddle; then, the remote control motor 22 is rotated to make the electric hoist 2 release the chain 23 of the first preset length, and the chain 23 is The hook 24 on the machine is hung in the hook hole cut in advance on the inner ring of the steel coil 01; then, the remote control motor 22 retracts the chain 23, and the inner ring of the steel coil 01 is pulled out to a preset length under the action of the chain 23 and then cut; the inner ring of the steel coil 01 is pulled out by motor power instead of manpower, which greatly reduces the labor intensity of the repair personnel; and the setting of the remote control realizes the remote control of the pulling operation, reducing the risk of repair personnel being accidentally injured by the steel coil; and the setting of the protective device can not only protect nearby personnel, but also collect the cut waste for subsequent recycling.

[0041] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A steel coil inner ring pulling device, characterized in that: The invention comprises a pulling and drawing device, wherein the pulling and drawing device comprises a base (1), an electric hoist (2) and a remote controller; the electric hoist (2) is mounted on the base (1) and is used to pull out the inner ring of a steel coil; the electric hoist (2) comprises a drum, a chain (23) and a motor (22); one end of the chain (23) is wound around the drum, and the other end of the chain (23) is detachably connected to the belt head of the inner ring of the steel coil; the remote controller is electrically connected to the motor (22) and is used to drive the drum to rotate so as to realize the retraction and extension of the chain (23).

2. A steel coil inner ring pulling device according to claim 1, characterized in that: The electric hoist (2) is installed on the base (1) via a lifting mechanism; the lifting mechanism is used to adjust the height of the electric hoist (2).

3. The steel coil inner ring pulling device according to claim 2, characterized in that: The lifting mechanism is an electric lifting mechanism, a hydraulic lifting mechanism, a pneumatic lifting mechanism or a manual lifting mechanism.

4. A steel coil inner ring pulling device according to claim 1, 2 or 3, characterized in that: A castor (11) with a brake is provided at the bottom of the base (1).

5. The steel coil inner ring pulling device according to claim 4, characterized in that: The base (1) is also provided with a positioning device (12) that cooperates with the ground anchor.

6. A steel coil inner ring pulling device according to claim 1, 2 or 3, characterized in that: The steel coil inner ring pulling device comprises a protective device (4) arranged between the electric hoist (2) and the steel coil (01) to be repaired; the protective device (4) comprises a left baffle wall (41) and a right baffle wall (42) arranged opposite to each other; the left baffle wall (41) and the right baffle wall (42) cooperate to limit the rebound range of the pulled out steel coil inner ring.

7. A steel coil inner ring pulling device according to claim 6, characterized in that: The protective device (4) comprises a bottom wall for placing waste materials; the bottom wall, the left retaining wall (41) and the right retaining wall (42) together enclose a storage space for accommodating the inner ring of the pulled-out steel coil; the waste materials are the cut inner rings of the steel coil.

8. The steel coil inner ring pulling device according to claim 7, characterized in that: A castor (11) with a brake is provided at the bottom of the protective device.

9. The steel coil inner ring pulling device according to claim 1, characterized in that: A hook hole is provided on the belt head of the inner ring of the steel coil, and a hook (24) matching the hook hole is provided on the end of the chain (23) away from the reel.

10. A steel coil inner ring pulling device according to claim 9, characterized in that: The hook (24) is hinged to the chain (23).

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