Stainless steel cold rolling oil dropping and inhibiting device

Abstract

The utility model provides a stainless steel cold rolling mill crane oil dropping oil suppression device, including wire rope, the outer periphery of winding mode fixed installation of wire rope one end in reel, the winding number is not less than 3, the both ends of reel connecting shaft passes through bearing seat and coupling, is installed in the crossbeam below of crane, wire rope adopts 35W 7+IWR structure, is composed of 35 round strands, round strand arrangement is valingthorpe formula, round strand is composed of 7 single steel wire, and wire rope center has the steel core rope core, wire rope outside is wrapped with the sleeve pipe and is used for preventing lubricating oil to scatter in the air. The utility model discloses, through setting up wire rope, uses valingthorpe formula strand rope arrangement, effectively reduces the contact stress between steel wire, promotes the extrusion resistance, reduces the abrasion and fatigue fracture of steel wire due to local stress concentration, prolongs the life, cooperates the compact strand technology, reduces the oil storage capacity in the wire rope, reduces the extrusion amount of lubricating oil when extruding and rubbing, reduces the oil pollution of steel roll from the source.

Description

Technical Field

[0001] This utility model relates to the field of lubrication technology for stainless steel cold-rolled cranes, specifically to a device for suppressing oil dripping from stainless steel cold-rolled cranes. Background Technology

[0002] In the stainless steel cold rolling production process, the overhead crane is a key piece of equipment for transporting stainless steel coils. It controls the crane clamps via the wire rope above to lift and move the coils.

[0003] In modern overhead cranes, the wire rope controlling the crane clamps experiences friction and compression between the wire rope and the drum, causing the lubricating oil inside the wire rope to drip directly onto the surface of the steel coil below. This results in oil contamination of the steel coil, affecting its appearance quality and product qualification rate. Traditional solutions, such as increasing cleaning measures or adjusting the amount of lubricating oil added, are not ideal and cannot fundamentally solve the oil dripping problem. Utility Model Content

[0004] The purpose of this invention is to provide a stainless steel cold-rolled crane oil dripping and oil suppression device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A stainless steel cold-rolled overhead crane oil dripping and suppression device includes:

[0007] A steel wire rope, one end of which is fixedly installed on the outer circumference of the drum by winding, with no less than 3 turns. The connecting shafts at both ends of the drum are installed below the crossbeam of the crane through bearing seats and couplings.

[0008] The wire rope adopts a 35W×7+IWR structure, which consists of 35 round strands arranged in a Warington pattern. Each round strand is composed of 7 single steel wires, and the wire rope has a steel core at its center.

[0009] The wire rope is wrapped with a sleeve to prevent lubricating oil from spilling in the air.

[0010] Preferably, the wire rope may also adopt an 18×7+IWS structure, consisting of 18 round strands arranged in a Warington pattern, each round strand consisting of 7 single steel wires, and the wire rope having a steel core at its center.

[0011] Preferably, the wire rope adopts a compacted strand process with a strand filling coefficient >92%, which is used to reduce the oil storage of the wire rope.

[0012] Preferably, the wire rope is filled with grease, and the grease is a long-lasting grease at 120°C.

[0013] Preferably, the surface of the single steel wire is coated with a phosphate coating to enhance the frictional properties and wear resistance of the single steel wire.

[0014] Preferably, the single steel wire is also hot-dip galvanized, with the hot-dip galvanized layer located outside the phosphate coating.

[0015] Preferably, the outer circumferential surface of the drum is provided with a spiral groove that matches the wire rope body, which is used to limit the winding trajectory of the wire rope.

[0016] Preferably, the sleeve has a thickness of 1.5 mm, and the inner surface of the sleeve is tightly fitted to the wire rope to prevent loosening or falling off.

[0017] Preferably, the wire rope is a large-diameter wire rope with a diameter ≥ 32mm.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This invention effectively reduces the contact stress between steel wires and improves their resistance to extrusion by setting up a steel wire rope and using a Warington strand arrangement. This reduces wear and fatigue fracture caused by local stress concentration, extends service life, and, in conjunction with the compacted strand process, reduces the amount of oil stored inside the steel wire rope and reduces the amount of lubricating oil squeezed out during extrusion friction, thus reducing oil pollution from steel coils at the source.

[0020] This invention, by setting a high-temperature long-lasting grease, has a drip point that is 50% higher than that of ordinary grease. It is less likely to be thrown out under high-temperature friction environment, reducing lubricant dripping, and can maintain the lubrication effect for a long time, extending the replenishment cycle and reducing maintenance costs.

[0021] This invention improves the durability and corrosion resistance of a steel wire by applying a phosphate coating and a hot-dip galvanized layer to the surface of a single steel wire. The phosphate coating enhances friction characteristics and wear resistance and stores grease, while the galvanized layer isolates corrosive media to prevent rust.

[0022] This invention, by setting up a polyethylene sleeve to tightly wrap the steel wire rope, effectively prevents lubricating oil leakage, reduces the oil contamination rate of the steel coil, and at the same time reduces the friction and corrosion between the steel wire rope and the outside world, extending its service life and reducing the frequency of equipment maintenance. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the 35W×7+IWR steel wire rope structure of this utility model;

[0025] Figure 3 This is a schematic diagram of the 18W×7+IWR steel wire rope structure of this utility model;

[0026] Figure 4 This is a schematic diagram of a single steel wire of this utility model.

[0027] In the diagram: 1. Drum; 2. Wire rope; 201. Round strand; 202. Single wire; 3. Connecting shaft; 4. Sleeve; 5. Phosphate coating; 6. Hot-dip galvanized layer. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1:

[0030] Please see Figures 1 to 2 ,as well as Figure 4 This utility model provides a technical solution:

[0031] An oil dripping and suppression device for a stainless steel cold rolling crane, used to prevent oil from dripping onto the surface of the steel coil and causing oil contamination, includes:

[0032] The steel wire rope 2 is fixedly installed on the outer circumference of the drum 1 by winding at one end, with no less than 3 turns. The two ends of the drum 1 are connected to the shaft 3 through bearing seats and couplings, and are installed below the crossbeam of the crane.

[0033] The wire rope 2 adopts a 35W×7+IWR structure, which consists of 35 round strands 201 arranged in a Warington pattern. Each round strand 201 is composed of 7 single steel wires 202, and the wire rope 2 has a steel core at its center.

[0034] The Warington structure consists of two layers. The inner layer is composed of single steel wires 202 of the same diameter. The outer layer uses two types of steel wires of different thicknesses arranged alternately, with the number of each type of steel wire equal to the number of steel wires in the inner layer. That is, the total number of steel wires in the outer layer is twice the number of steel wires in the inner layer. The diameter of the thicker steel wires in the outer layer is larger than that of the steel wires in the inner layer, while the diameter of the thinner steel wires in the outer layer is smaller than that of the steel wires in the inner layer. With this arrangement, the thicker steel wires in the outer layer are located in the grooves of two adjacent steel wires in the inner layer, while the thinner steel wires in the outer layer are located on the outer circle of the steel wires in the inner layer, effectively reducing the contact stress between the steel wires.

[0035] Specifically, the steel wire rope 2 is a large-diameter steel wire rope 2 with a diameter ≥ 32mm.

[0036] As a key piece of equipment for transporting stainless steel coils, the overhead crane controls the crane clamps. When the drum 1 is running, the wire rope 2 above the crane will drop lubricating oil due to compression and friction. This oil drips onto the surface of the steel coil, causing oil contamination.

[0037] In this embodiment, the wire rope 2 is a 35W×7+IWR wire rope with a breaking tensile strength range of 150-800kN. It uses a Warington strand arrangement, which allows the wires in each layer to better distribute stress, effectively reducing the contact stress between the wires by 40% and improving the resistance to compression. During the frequent compression and friction of the drum 1 and the steel coil lifting, it can reduce the wear and fatigue fracture of the wires caused by local stress concentration, extend the service life of the wire rope 2, and is sufficient to bear the lifting requirements of heavy-duty steel coils, avoiding safety hazards caused by insufficient strength of the wire rope 2.

[0038] Specifically, the wire rope 2 adopts a compacted strand process with a strand filling coefficient >92%, which is used to reduce the oil storage capacity of the wire rope 2.

[0039] The compaction process refers to the surface rolling treatment of the strands of the wire rope 2, which compresses the gaps between the wires in the strands by precisely controlling the rolling pressure and number of rolling cycles.

[0040] In this embodiment, a compacted strand process is used to increase the inter-strand filling coefficient to over 92%. This process makes the strand structure more compact, reducing the gaps between the steel wires, thereby reducing the storage space for lubricating oil inside the strands. Consequently, the amount of oil stored in the wire rope 2 is reduced. Therefore, when the wire rope 2 is subjected to compression and friction while running on the drum 1 of the crane, the amount of lubricating oil squeezed out is reduced. On the one hand, this reduces the storage and squeezing of lubricating oil at the source, lowering the oil contamination rate on the surface of the steel coil and reducing the manpower and time costs of subsequent cleaning processes. On the other hand, the compacted strand process makes the contact between the steel wires tighter and the stress more uniform. Combined with the compression resistance characteristics of the Warington structure, the breaking tensile strength of the wire rope 2 is increased by 15%, and its wear resistance is enhanced.

[0041] Specifically, the wire rope 2 is filled with grease, and the grease is a long-lasting grease at 120°C.

[0042] In this embodiment, the lubricating grease is preferably a high-temperature long-life lubricating grease, which has a high temperature tolerance and can remain stable in an environment of 120°C. It is not easy to lose due to high temperature, and the drip point is 50% higher than that of ordinary lubricating grease. When the steel wire rope 2 and the drum 1 are squeezed and rubbed to generate heat, it can still firmly adhere to the surface of the steel wire, reducing the oil splashing out due to high temperature.

[0043] Combined with the compaction process, it can be evenly distributed in the gaps between the steel wires. When the steel wire rope 2 is subjected to compression and friction during the operation of the drum 1, due to the high drop point and good high temperature resistance of the grease, the amount of oil squeezed out is reduced, which reduces the oil contamination rate on the surface of the steel coil and can maintain the lubrication effect on the steel wire for a long time without frequent replenishment.

[0044] Specifically, the surface of the single steel wire 202 is coated with a phosphate coating 5 to enhance the friction characteristics and wear resistance of the single steel wire 202.

[0045] Specifically, the single steel wire 202 is also hot-dip galvanized, with the hot-dip galvanized layer 6 located outside the phosphate coating 5.

[0046] In this embodiment, the inner phosphating coating 5 forms a porous crystalline film on the surface of the steel wire, which can enhance the friction characteristics of the steel wire surface, make the bond between the steel wires more stable during strand twisting, reduce wear caused by relative sliding, and the porous structure can adsorb and store a certain amount of grease, continuously providing lubrication protection for the steel wire and improving wear resistance.

[0047] The outer hot-dip galvanized layer 6 covers the phosphate coating 5. Utilizing the anodic protection of zinc, it isolates the steel wire from direct contact with corrosive media such as workshop coolant and water vapor, preventing the steel wire from rusting. Moreover, the galvanized layer thickness is ≥120μm, which can withstand long-term friction and environmental erosion, enhancing the wear resistance of a single steel wire 202.

[0048] During processing, the single steel wire 202 is first phosphated to form an inner protective layer, and then a zinc layer is formed on the outside of the phosphated coating 5 through hot-dip galvanizing process to ensure that the two layers are tightly bonded and to prevent the coating from peeling off.

[0049] Specifically, the wire rope 2 is wrapped with a sleeve 4 to prevent lubricating oil from scattering in the air. The sleeve 4 is 1.5mm thick and its inner surface is tightly fitted to the wire rope 2 to prevent loosening or falling off.

[0050] In this embodiment, the sleeve 4 is preferably made of polyethylene (PE), which is flexible and has good wear resistance and chemical stability. The sleeve 4 is tightly fitted to the wire rope 2 to prevent the protection from failing due to loosening or falling off.

[0051] The sleeve 4 prevents the lubricating oil inside the wire rope 2 from leaking out during hoisting due to squeezing, friction or centrifugal force, greatly reducing the amount of lubricating oil dripping onto the surface of the steel coil, reducing the oil contamination rate of the steel coil, and the sleeve 4 can reduce the coefficient of friction between the wire rope 2 and the drum 1 and pulley, reducing the heat and wear generated by friction, and extending the service life of the wire rope 2.

[0052] The sleeve 4 can also isolate the wire rope 2 from corrosive or abrasive substances such as coolant, water vapor, and dust in the external environment, reducing the erosion and damage to the wire rope 2, further enhancing the corrosion resistance and durability of the wire rope 2, and reducing the frequency of equipment maintenance and replacement costs.

[0053] Specifically, the outer circumferential surface of the drum 1 is provided with a spiral groove that matches the body of the wire rope 2, which is used to limit the winding trajectory of the wire rope 2.

[0054] Specifically, the drive system of drum 1, the opening and closing control mechanism of the crane clamp, and the overall running frame of the crane all adopt existing mature technologies. The connection method between drum 1 and the crane beam through standard bearing seats, the conventional fixing structure between the crane clamp and the end of the wire rope 2, and the driving method for the crane to travel on the workshop track are all common installation settings in the industry. Their specific construction and assembly details need not be elaborated here.

[0055] Example 2:

[0056] Please see Figure 3 This utility model provides a technical solution:

[0057] Specifically, the wire rope 2 can also adopt an 18×7+IWS structure, consisting of 18 round strands 201 arranged in a Warington pattern. Each round strand 201 is composed of 7 single steel wires 202, and the wire rope 2 has a steel core at its center.

[0058] In this embodiment, the 18×7+IWS structure of the wire rope 2 has multiple strands with opposite twist directions and precisely matched twist pitch, so that the torsional torque of each layer of strands cancels each other out. Therefore, there is no tendency to drive the steel coil to rotate during hoisting, and the resultant torque is zero. That is, when the wire rope 2 is under load or free suspension, the whole structure will not have a torsional tendency and can maintain a stable straight state. This can reduce the swaying and collision of the steel coil due to rotation during hoisting, reduce the risk of edge collision or surface scratches of the steel coil, and improve the appearance quality of the product.

[0059] In use, the other end of the wire rope 2 of this device is connected to the crane clamp. The crane's drive system drives the drum 1 to rotate, causing the wire rope 2 to be wound up and down to control the lifting and lowering of the clamp, thus realizing the hoisting of stainless steel coils. During transportation, the wire rope 2 bears the heavy-duty steel coils due to its high breaking strength and compression resistance. Through the synergistic effect of the Warrington arrangement, compacted strand process, high-temperature lubricating grease, phosphate coating 5, galvanized layer and polyethylene sleeve 4, the wire rope 2 reduces lubricating oil dripping during hoisting, avoiding oil contamination of the steel coils. At the same time, its own structural strength and protective performance ensure the safety and efficiency of hoisting.

[0060] All other parts of this utility model not described herein are the same as existing technologies, or are known technologies, or can be implemented using existing technologies, and will not be described in detail here.

[0061] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stainless steel cold-rolled overhead crane oil dripping and suppression device, characterized in that, include: The wire rope (2) is fixedly installed on the outer circumference of the drum (1) by winding at one end, with a winding number of not less than 3 turns. The connecting shafts (3) at both ends of the drum (1) are installed below the crossbeam of the crane through bearing seats and couplings. The wire rope (2) adopts a 35W×7+IWR structure, which consists of 35 round strands (201). The round strands (201) are arranged in a Warington pattern. The round strands (201) are composed of 7 single steel wires (202). The wire rope (2) has a steel core at its center. The wire rope (2) is wrapped with a sleeve (4) to prevent lubricating oil from scattering in the air.

2. The stainless steel cold-rolled crane oil dripping and suppression device according to claim 1, characterized in that: The wire rope (2) can also adopt an 18×7+IWS structure, which consists of 18 round strands (201), the round strands (201) are arranged in a Warington pattern, the round strands (201) are composed of 7 single steel wires (202), and the wire rope (2) has a steel core at its center.

3. The stainless steel cold-rolled crane oil dripping and suppression device according to claim 1, characterized in that: The wire rope (2) adopts a compacted strand process with a strand filling coefficient of >92%, which is used to reduce the oil storage capacity of the wire rope (2).

4. The stainless steel cold-rolled crane oil dripping and suppression device according to claim 1, characterized in that: The wire rope (2) is filled with grease, and the grease is a long-lasting grease at 120°C.

5. The stainless steel cold-rolled crane oil dripping and suppression device according to claim 1, characterized in that: The surface of the single steel wire (202) is coated with a phosphate coating (5) to enhance the friction characteristics and wear resistance of the single steel wire (202).

6. The stainless steel cold-rolled crane oil dripping and suppression device according to claim 5, characterized in that: The single steel wire (202) is also hot-dip galvanized, with the hot-dip galvanized layer (6) located outside the phosphate coating (5).

7. The stainless steel cold-rolled crane oil dripping and suppression device according to claim 1, characterized in that: The outer circumferential surface of the drum (1) is provided with a spiral groove that matches the body of the wire rope (2) to limit the winding trajectory of the wire rope (2).

8. The stainless steel cold-rolled crane oil dripping and suppression device according to claim 1, characterized in that: The sleeve (4) is 1.5 mm thick, and the inner surface of the sleeve (4) is tightly fitted to the wire rope (2) to prevent loosening or falling off.

9. The stainless steel cold-rolled crane oil dripping and suppression device according to claim 1, characterized in that: The steel wire rope (2) is a large-specification steel wire rope (2) with a diameter ≥ 32 mm.

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