Coil conveying method for steel coil easy to deform

Abstract

The invention particularly relates to a coil conveying method for an easy-to-deform steel coil, and relates to a coiling machine, a fixed saddle, the easy-to-deform steel coil, a coil conveying trolley, two conveying chains, a coil conveying transverse moving oil cylinder, a first displacement sensor and an automatic controller in a known steel coil conveying system. The coil conveying trolley comprises a moving frame, a main bracket, a lifting oil cylinder and a second displacement sensor; the automatic controller is used for controlling operation of the coil conveying transverse moving oil cylinder and the lifting oil cylinder. The first displacement sensor is used for checking displacement data of the coil conveying transverse moving oil cylinder; and the second displacement sensor is used for checking displacement data of the lifting oil cylinder. According to the invention, the transportation method of the easily-deformed steel coil is changed from consignment to special picking transportation; when the easy-to-deform steel coil is picked and transported, the main bracket of the coil transporting trolley can provide upward supporting force for the coil center of the easy-to-deform steel coil to overcome deformation caused by the dead weight of the easy-to-deform steel coil, so that the problem of deformation of the easy-to-deform steel coil during transportation is solved, and the existing production rhythm can be kept.

Description

Technical Field

[0001] The invention specifically relates to a coil transportation method for easily deformed steel coils, belonging to the technical field of steel coil transportation. Background Art

[0002] In the coiling area of ​​the hot rolling production line, after the coiling of the steel coil is completed, the conventional steel coil transportation process is generally as follows: the unloading trolley unloads the steel coil from the reel and transports it to the saddle of the baler, and then the unloading trolley returns to the bottom of the coiler to prepare for the next coiling. After the steel coil is bundled on the baling saddle, it is transported by the coil transport trolley to the fast transport chain and then sent to the downstream process to complete the spraying and other operations before being put into storage.

[0003] In the prior art, the method of transporting steel coils is mostly coil transport, that is, the coil transport trolley lifts the steel coil upward from the bottom of the steel coil. This coil transport method has good adaptability, can simplify the coil transport operation, and can complete the coil transport quickly and safely. However, when transporting some easily deformed steel coils, the coil shape will be deformed due to the deadweight of the steel coil, resulting in the downstream process (cold rolling and pickling) being unable to unwind because the unwinder reel cannot be inserted into the coil core. In order to avoid affecting the production of the downstream process, these deformed steel coils have to be rewound on the flattening line, which increases the cost. Summary of the invention

[0004] The technical problem to be solved by the present invention is: how to prevent the easily deformed steel coil from being severely deformed which would affect the downstream process during the process of being transported by the coil transport trolley to the fast transport chain.

[0005] The technical solution proposed in the present invention is: a method for transporting easily deformable steel coils, which involves a coiler, a fixed saddle, an easily deformable steel coil, a coil transport trolley, two transport chains, a coil transport transverse oil cylinder, a first displacement sensor and an automatic controller in a known steel coil transport system; the coil transport trolley includes a motion frame, a main bracket, a lifting oil cylinder and a second displacement sensor; the automatic controller is used to control the operation of the coil transport transverse oil cylinder and the lifting oil cylinder; the first displacement sensor is used to view the displacement data of the coil transport transverse oil cylinder; the second displacement sensor is used to view the displacement data of the lifting oil cylinder, and the coil transport method includes the following steps:

[0006] Step 1: Check whether the readings on the first displacement sensor and the second displacement sensor are zero; if not, the automatic controller controls the roll-transporting cylinder and the lifting cylinder to retract to zero position; if zero, proceed to the next step;

[0007] Step 2: The automatic controller drives the roll transport transverse cylinder to extend a first distance L1, so that the roll transport trolley enters the roll transport waiting position. At this time, the first distance L1 satisfies the requirements of the following formula (1):

[0008]

[0009] In formula (1), D1 is the distance between the two transport chains and the fixed saddle;

[0010] Step 3: The automatic controller drives the roll transport lateral cylinder to extend a second distance L2, so that the roll transport trolley enters the roll picking waiting position. At this time, the second distance L2 satisfies the requirements of the following formula (2):

[0011]

[0012] In formula (2), B is the width of the deformable steel coil, and D2 is the distance between the fixed saddle and the drum of the coiler;

[0013] Step 4: The automatic controller drives the lifting cylinder to extend to a first height H1, so that the main bracket of the coil transport trolley rises. The first height H1 satisfies the requirements of the following formula (3). At this time, the center of the main bracket coincides with the center of the steel coil in the horizontal direction.

[0014]

[0015] In formula (3), R is the radius of the deformable steel coil, r is the radius of the two small arcs of contact between the fixed saddle and the deformable steel coil, M is the distance between the two small arcs of contact between the fixed saddle and the deformable steel coil, and S is the vertical distance from the center of the coil transport trolley to the center line of the two small arcs of contact between the fixed saddle and the deformable steel coil;

[0016] Step 5: The automatic controller drives the roll transport transverse cylinder to retract a third distance L3, so that the designed force center of the main bracket of the roll transport trolley coincides with the center of the fixed saddle. At this time, the roll transport transverse cylinder stroke L displayed by the first displacement sensor meets the requirements of the following formula (4):

[0017] L = L1 + L2 - L3 = D1 (4);

[0018] Step 6: The automatic controller drives the lifting cylinder to extend to a second height H2, so that the main bracket of the coil transport trolley picks up the easily deformed steel coil. At this time, the second height H2 satisfies the requirements of the following formula (5):

[0019]

[0020] In formula (5), d is the core radius of the steel coil;

[0021] Step 7: The automatic controller first drives the coil transport transverse cylinder to retract to the zero position, and then drives the lifting cylinder to retract to the second height H2, so that the easily deformable steel coil falls on the two transmission chains;

[0022] Step 8: The automatic controller drives the coil transport transverse cylinder to extend a fourth distance L4 to complete the transportation of the easily deformable steel coil. At this time, the fourth distance L4 satisfies the requirements of the following formula (6):

[0023] B<L4<2B(6).

[0024] Beneficial effects of the present invention: Since the present invention changes the transportation method of easily deformable steel coils from consignment to special lifting, the main bracket of the coil transport trolley when lifting the easily deformable steel coils can provide an upward supporting force to the core of the easily deformable steel coils to overcome the deformation caused by the self-weight of the easily deformable steel coils. This not only solves the deformation problem of easily deformable steel coils in the prior art, but also maintains the existing production rhythm. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the coil transport trolley in the present invention when it is located at the coil transport waiting position.

[0026] Figure 2 It is a schematic diagram of the coil transport trolley in the present invention when it is located at the coil picking waiting position.

[0027] Figure 3 The present invention is a schematic diagram of the main bracket of the coil transport trolley being inserted into the core of the steel coil. DETAILED DESCRIPTION

[0028] The following is a further description of a method for transporting a deformable steel coil according to the present invention in conjunction with the accompanying drawings and specific embodiments.

[0029] The present invention provides a method for transporting a deformable steel coil, such as Figure 1 As shown, it involves a coiler, a fixed saddle 1, an easily deformable steel coil 2, a coil transport trolley 3, two transport chains 4, a coil transport transverse oil cylinder 5, a first displacement sensor 6 and an automatic controller in a known steel coil transport system; the coil transport trolley 3 includes a motion frame 31, a main bracket 32, a lifting oil cylinder 33 and a second displacement sensor 34; the automatic controller is used to control the operation of the coil transport transverse oil cylinder 5 and the lifting oil cylinder 33 in the steel coil transport system, the first displacement sensor 6 is used to check the displacement data of the coil transport transverse oil cylinder 5; the second displacement sensor 34 is used to check the displacement data of the lifting oil cylinder 33, and the coil transport method includes the following steps:

[0030] Step 1: Check whether the readings on the first displacement sensor 6 and the second displacement sensor 33 are zero; if not, the automatic controller controls the roll-transporting cylinder 5 and the lifting cylinder 33 to retract to zero position; if zero, proceed to the next step.

[0031] Step 2: If Figure 1 As shown, the automatic controller drives the roll transport transverse shift cylinder 5 to extend a first distance L1, so that the roll transport trolley 3 enters the roll transport waiting position. At this time, the first distance L1 extended by the roll transport transverse shift cylinder 5 satisfies the requirements of the following formula (1):

[0032]

[0033] In formula (1), D1 is the distance between the two transport chains 4 and the fixed saddle 1;

[0034] Step 3: If Figure 2 As shown, the automatic controller drives the roll transport transverse shifting cylinder 5 to extend a second distance L2, so that the roll transporting trolley 3 enters the roll picking waiting position. At this time, the second distance L2 extended by the roll transport transverse shifting cylinder 5 meets the requirements of the following formula (2):

[0035]

[0036] In formula (2), B is the width of the easily deformable steel coil 2, and D2 is the distance between the fixed saddle 1 and the coiler.

[0037] Step 4: The automatic controller drives the lifting cylinder 33 to extend to a first height H1, so that the main bracket 32 ​​of the coil transport trolley 3 rises. The first height H1 of the lifting cylinder 33 meets the requirements of the following formula (3). At this time, the center of the main bracket 32 ​​coincides with the center of the deformable steel coil 2 in the horizontal direction.

[0038]

[0039] In formula (3), R is the radius of the deformable steel coil 2, r is the radius of the two small arcs of contact between the fixed saddle 1 and the deformable steel coil 2, M is the distance between the two small arcs of contact between the fixed saddle 1 and the deformable steel coil 2, and S is the vertical distance from the center of the coil transport trolley 3 to the center line of the two small arcs of contact between the fixed saddle 1 and the deformable steel coil 2;

[0040] Step 5: Figure 3 As shown, the automatic controller drives the roll transport transverse cylinder 5 to retract the third distance L3, so that the designed force center of the main bracket 32 ​​of the roll transport trolley 3 coincides with the center of the fixed saddle 1. At this time, the stroke L of the roll transport transverse cylinder 5 displayed by the first displacement sensor 6 meets the requirements of the following formula (4):

[0041] L=L1+L2-L3=D1.

[0042] Step 6: The automatic controller drives the lifting cylinder 33 to extend to a second height H2, so that the main bracket 32 ​​of the coil transport trolley 3 picks up the easily deformable steel coil 2. At this time, the second height H2 of the lifting cylinder 33 meets the requirements of the following formula (5):

[0043]

[0044] In formula (5), d is the core radius of the easily deformable steel coil 2.

[0045] Step 7: The automatic controller first drives the coil transport transverse cylinder 5 to retract to the zero position, and then the automatic controller drives the lifting cylinder 33 to retract to the second height H2, so that the easily deformable steel coil falls on the two transmission chains 4.

[0046] Step 8: The automatic controller drives the coil transport transverse cylinder 5 to extend to a fourth distance L4 to complete the transportation of the easily deformable steel coil 2. At this time, the fourth distance L4 extended by the coil transport transverse cylinder 5 satisfies the requirements of the following formula (6):

[0047] B<L4<2B(6).

Claims

1. A method for transporting a deformable steel coil, involving a coiler, a fixed saddle, an easily deformable steel coil, a coil transport trolley, two transport chains, a coil transport transverse oil cylinder, a first displacement sensor and an automatic controller in a known steel coil transport system; the coil transport trolley comprises a motion frame, a main bracket, a lifting oil cylinder and a second displacement sensor; the automatic controller is used to control the operation of the coil transport transverse oil cylinder and the lifting oil cylinder; the first displacement sensor is used to check the displacement data of the coil transport transverse oil cylinder; the second displacement sensor is used to check the displacement data of the lifting oil cylinder, characterized in that: The roll transport method comprises the following steps: Step 1: Check whether the readings on the first displacement sensor and the second displacement sensor are zero; if not, the automatic controller controls the roll-transporting cylinder and the lifting cylinder to retract to zero position; if zero, proceed to the next step; Step 2: The automatic controller drives the roll transport transverse cylinder to extend a first distance L1, so that the roll transport trolley enters the roll transport waiting position. At this time, the first distance L1 satisfies the requirements of the following formula (1): In formula (1), D1 is the distance between the two transport chains and the fixed saddle; Step 3: The automatic controller drives the roll transport lateral cylinder to extend a second distance L2, so that the roll transport trolley enters the roll picking waiting position. At this time, the second distance L2 satisfies the requirements of the following formula (2): In formula (2), B is the width of the deformable steel coil, and D2 is the distance between the fixed saddle and the drum of the coiler; Step 4: The automatic controller drives the lifting cylinder to extend to a first height H1, so that the main bracket of the coil transport trolley rises. The first height H1 satisfies the requirements of the following formula (3). At this time, the center of the main bracket coincides with the center of the steel coil in the horizontal direction. In formula (3), R is the radius of the deformable steel coil, r is the radius of the two small arcs of contact between the fixed saddle and the deformable steel coil, M is the distance between the two small arcs of contact between the fixed saddle and the deformable steel coil, and S is the vertical distance from the center of the coil transport trolley to the center line of the two small arcs of contact between the fixed saddle and the deformable steel coil; Step 5: The automatic controller drives the roll transport transverse cylinder to retract a third distance L3, so that the designed force center of the main bracket of the roll transport trolley coincides with the center of the fixed saddle. At this time, the roll transport transverse cylinder stroke L displayed by the first displacement sensor meets the requirements of the following formula (4): L = L1 + L2 - L3 = D1 (4); Step 6: The automatic controller drives the lifting cylinder to extend to a second height H2, so that the main bracket of the coil transport trolley picks up the easily deformed steel coil. At this time, the second height H2 satisfies the requirements of the following formula (5): In formula (5), d is the core radius of the steel coil; Step 7: The automatic controller first drives the coil transport transverse cylinder to retract to the zero position, and then drives the lifting cylinder to retract to the second height H2, so that the easily deformable steel coil falls on the two transmission chains; Step 8: The automatic controller drives the coil transport transverse cylinder to extend a fourth distance L4 to complete the transportation of the easily deformable steel coil. At this time, the fourth distance L4 satisfies the requirements of the following formula (6): B<L4<2B(6).

Images