A multi-functional sling assembly

Abstract

The application discloses a multifunctional lifting assembly which comprises a base column, a lifting hook, an impact cone and an anchor hook, adopts a base column as a basic hanger, cooperates with multiple hangers with different functions, improves the defects of the traditional lifting hanger, and is suitable for different production sites and has a wide application range. Moreover, a dovetail groove is arranged on the base column, and the base column can be directly inserted during installation, which is convenient and fast. The cross section of the dovetail groove is trapezoidal, the stability is high after being clamped, and the lifting process is safer and more reliable.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of hoisting equipment, in particular to a multifunctional lifting assembly. BACKGROUND

[0002] The lifting appliance refers to the device for lifting heavy objects in hoisting machinery, commonly known as hooks, rings and slings, widely used in various hoisting industries to improve work efficiency. The steel smelting field often needs to hoist various materials, so it is necessary to select a lifting appliance with reasonable structure and convenient use according to different materials to improve work efficiency and ensure safe and smooth production.

[0003] At present, the hook type lifting tool used in cooperation with the overhead crane (or bridge crane) and the tool for handling accumulated slag in the steelmaking site are divided into the following four types: (1) ring chain; a large oval steel ring is connected to multiple chain links of different specifications, and the chain links are connected to a large ring through shackles at the end, which is used for lifting appliances and materials with open type lifting lugs; (2) hook chain; a large oval steel ring is connected to multiple chain links of different specifications, and the chain links are connected to a large hook or a small hook through shackles at the end, which is used for lifting appliances and materials with open or closed type lifting lugs; (3) anchor hook; hung on the hook of the overhead crane through a lifting ring, used for removing slag from the furnace opening and the ladle opening to ensure normal use of the equipment; (4) heavy weight; hung on the hook of the overhead crane through a lifting ring, used for breaking the crust on the surface of the ladle to facilitate subsequent process operation.

[0004] Although the above tools can meet the current site use requirements, they still have the following problems: (1) the lifting appliance is special for lifting woven bags, steel buckets and slag plates, which has great limitations; (2) in order to improve production efficiency, multiple lifting lug woven bags or lifting lug barrels are often hard inserted into a hook head of the overhead crane, resulting in overcrowding inside the hook, unsecure hanging and high safety risk during hoisting; (3) when the LF (refining furnace) electrode or the EAF (electric arc furnace) electrode is tilted or the continuous casting trench is cleaned in stages, a radial multi-hook lifting appliance is needed, but the existing lifting appliance has great differences in weight and hook thickness, which cannot meet the use requirements; (4) the existing heavy weight is in the shape of a teardrop, which is relatively heavy, and when dealing with the crust, it only relies on the weight to directly impact the crust, which is easy to stick slag. Therefore, a multifunctional lifting assembly needs to be designed in combination with the various hoisting requirements of the steelmaking production site and the space and process equipment characteristics of the steelmaking production site. SUMMARY

[0005] The present application provides a multifunctional lifting assembly, which aims to solve the problem that the existing lifting appliance is special and has great limitations, which cannot meet the various hoisting requirements of the steelmaking production site.

[0006] The present application is a multifunctional lifting assembly, which comprises a base column, a hook, an impact cone and an anchor hook.

[0007] The base column comprises a base column body, the top of the base column body is provided with a first lifting ring, and the outer wall of the base column body is fixedly connected with an inlay seat; the inlay seat is provided with a dovetail groove in the vertical direction;

[0008] The lifting hook comprises a vertical hook, the top of the vertical hook is provided with a second lifting ring, the side of the vertical hook away from the hook body is connected with a first inlay strip, and the first inlay strip is matched with the inner cavity of the dovetail groove;

[0009] The impact cone comprises two symmetrical vertical arms, the top of the vertical arm is provided with a third lifting ring, the opposite inner sides of the vertical arms are connected with a second inlay strip, and the second inlay strip is matched with the inner cavity of the dovetail groove; the impact cone further comprises a cone body, the top of the cone body is provided with a cylinder, the outer diameter of the cylinder is the same as the distance between the two vertical arms; the upper part and the lower part of the vertical arm and the symmetrical position of the outer periphery of the cylinder are all provided with a positioning hole, the vertical arms and the cone body are connected through a fixing pin inserted into the positioning hole, and a positioning pin is inserted into the end of the fixing pin;

[0010] The anchor hook comprises an anchor hook body, the top of the anchor hook body is provided with a fourth lifting ring, the side of the anchor hook body away from the hook body is connected with a third inlay strip, and the third inlay strip is matched with the inner cavity of the dovetail groove.

[0011] Preferably, the base column body is a cuboid, and the four peripheries are all provided with inlay seats.

[0012] Preferably, the base column body and the inlay seat are fixedly connected through a penetrating pin.

[0013] Preferably, the size of the side of the dovetail groove close to the base column body is greater than the side away from the base column body.

[0014] Preferably, the side of the bottom of the dovetail groove away from the base column body is in the shape of a downward slope.

[0015] Preferably, the dovetail groove is matched with the first inlay strip, the second inlay strip and the third inlay strip in a gap, and the matching gaps are all 1-2 mm.

[0016] Preferably, the anchor hook body is a barb.

[0017] Preferably, the inside of the barb is provided with a transition fillet.

[0018] Preferably, the fixing pin is a square pin, and the positioning hole is a square hole matched with the square pin.

[0019] Preferably, the outer wall of the cone body is bonded with an isolating agent.

[0020] Compared with the prior art, the present application has the following beneficial effects:

[0021] 1. The multifunctional lifting assembly provided by the present application adopts a base column as a basic hanger, cooperates with multiple hangers with different functions, improves the defects of the traditional lifting hanger, such as special-purpose and large limitation, and is suitable for different production sites and has a wide application range.

[0022] 2. The multifunctional lifting appliance assembly provided by the application is provided with dovetail grooves on the inlay seat, can be directly inserted during installation, is convenient and fast, the cross section of the dovetail groove is trapezoidal, the stability after clamping is high, and the hoisting process is safer.

[0023] 3. The multifunctional lifting appliance assembly provided by the application can design lifting appliances with different bearing capacities according to actual work sites, so as to meet different material hoisting requirements, is flexible and changeable, and has strong adaptability. Meanwhile, the conical tip structure of the impact cone can easily impact and open the top slag crust of the ladle, so that the impact cone can be inserted into molten iron for desulfurization when the molten iron is pre-treated by powder spraying, can impact and open the slag crust on the surface of the molten steel of the ladle caused by accidents, so that the gas blown from the bottom of the ladle can overflow from the molten steel, ensures the stirring effect, and facilitates the refining treatment of the LF, VOD and other refining furnaces. Moreover, the cone not only increases the impact pressure, but also reduces the weight of the equipment, so as to facilitate the operation of the overhead crane and use more safely.

[0024] 4. The multifunctional lifting appliance assembly provided by the application is provided with a release agent on the outer wall of the cone, so as to not stick to slag or less stick to slag when breaking the shell, even if the slag sticks, it is easy to fall off, reduces the cleaning frequency, and improves the work efficiency.

[0025] 5. The multifunctional lifting appliance assembly provided by the application can connect multiple hooks on the outer wall of the base column, and when multiple bags or barrels need to be hoisted, the materials can be hung on different hook heads to avoid crowded hoisting, safe and efficient.

[0026] 6. The multifunctional lifting appliance assembly provided by the application can simultaneously hang different hooks on the same base column, and can be switched at any time when multiple hooks are needed for processing electrode skewing, cleaning the trench and other difficult working conditions, has a wide application range and strong practicability.

[0027] 7. The multifunctional lifting appliance assembly provided by the application is in gap fit between the dovetail groove and the first inlay strip, the second inlay strip and the third inlay strip, on the one hand, it is convenient to disassemble and assemble, on the other hand, it can be flexibly installed even if micro deformation occurs after long time use, is practical and convenient, and has high reusability.

[0028] 8. The multifunctional lifting appliance assembly provided by the application is easy to process, has low manufacturing cost, improves the hoisting efficiency of the work site, ensures the smooth production, is suitable for all hoisting fields, and can be widely used.

[0029] 9. The multi-functional lifting device assembly provided by this invention is entirely made of carbon steel or alloy steel of Q355 or higher grade, which has high strength, is not easily deformed, and has a long service life. The base column and the insert can be machined from a single block of square billet, or they can be machined separately and then welded together and connected by through pins for reinforcement. The integrated machining structure has high strength and is suitable for working conditions with abundant raw materials. The modular assembly method allows for convenient disassembly and assembly, high flexibility, and is suitable for working conditions with scarce raw materials, making it highly adaptable.

[0030] 10. The multi-functional lifting tool assembly provided by the present invention has a barbed hook body with rounded corners inside to reduce stress concentration. This eliminates the defects of traditional barbed hooks that are prone to breakage due to sharp angles. It is more stable when hooking slag from converter mouths or liquid metal container mouths, improves the service life of the anchor hook body, and makes the use process safer and more reliable. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the base column structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the hook structure of the present invention;

[0033] Figure 3 This is a schematic diagram of the impact cone structure of the present invention;

[0034] Figure 4 This is a schematic diagram of the cone structure of the present invention;

[0035] Figure 5 This is a schematic diagram of the anchor hook structure of the present invention;

[0036] In the diagram: 1: Base column; 1-1: First lifting ring; 1-2: Base column body; 1-3: Inlay seat; 1-4: Dovetail groove; 2: Hook; 2-1: Second lifting ring; 2-2: First inlay strip; 2-3: Vertical hook; 3: Impact cone; 3-1: Third lifting ring; 3-2: Second inlay strip; 3-3: Vertical arm; 3-4: Fixing pin; 3-5: Cone; 3-6: Cylinder; 3-7: Positioning hole; 3-8: Positioning pin; 4: Anchor hook; 4-1: Fourth lifting ring; 4-2: Third inlay strip; 4-3: Anchor hook body. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings:

[0038] like Figures 1-5 As shown, the present invention is a multi-functional lifting tool assembly, characterized in that it includes a base column 1, a hook 2, an impact cone 3, and an anchor hook 4, wherein the base column 1, hook 2, impact cone 3, and anchor hook 4 are all made of Q355 carbon steel.

[0039] The base column 1 includes a cuboid base column body 1-2, the first lifting ring 1-1 is welded at the top of the base column body 1-2, and the insetting seat 1-3 is fixed by penetrating pins around the base column body 1-2; the dovetail groove 1-4 is vertically arranged on the insetting seat 1-3, the size of the side of the dovetail groove 1-4 close to the base column body 1-2 is larger than the size of the side of the dovetail groove 1-4 far from the base column body 1-2, and the bottom of the side of the dovetail groove 1-4 far from the base column body 1-2 is in the shape of a downward slope.

[0040] The lifting hook 2 includes a vertical hook 2-3, the second lifting ring 2-1 is arranged at the top of the vertical hook 2-3, the first insetting strip 2-2 is connected to the side of the vertical hook 2-3 away from the hook body, the first insetting strip 2-2 is matched with the inner cavity of the dovetail groove 1-4, the dovetail groove 1-4 is matched with the first insetting strip 2-2 in a gap, and the gap is 1 mm.

[0041] The impact cone 3 includes two symmetrical vertical arms 3-3, the third lifting ring 3-1 is arranged at the top of the vertical arm 3-3, the second insetting strip 3-2 is connected to the inner side of the vertical arm 3-3 opposite to the other vertical arm 3-3, the second insetting strip 3-2 is matched with the inner cavity of the dovetail groove 1-4, the dovetail groove 1-4 is matched with the second insetting strip 3-2 in a gap, and the gap is 1 mm; the impact cone 3 further includes a cone body 3-5, the cylindrical body 3-6 is arranged at the top of the cone body 3-5, the outer diameter of the cylindrical body 3-6 is the same as the distance between the two vertical arms 3-3, the positioning holes 3-7 are arranged through the upper part and the lower part of the vertical arm 3-3 and the outer circumferential symmetrical position of the cylindrical body 3-6, the fixing pins 3-4 are connected between the two vertical arms 3-3 and between the vertical arm 3-3 and the cone body 3-5 by being inserted into the positioning holes 3-7, and the positioning pins 3-8 are inserted into the end of the fixing pin 3-4, wherein the fixing pin 3-4 is a square pin, and the positioning hole 3-7 is a square hole matched with the fixing pin 3-4; in use, the cone body 3-5 is baked at 60 DEG C for 15 min, and then the release agent is bonded to the outer wall of the cone body 3-5, so as to reduce the slag adhesion and the cleaning frequency.

[0042] The anchor hook 4 includes the anchor hook body 4-3, the anchor hook body 4-3 is a barb, and the inside of the barb is processed with a transition round corner to reduce stress concentration. The fourth lifting ring 4-1 is arranged at the top of the anchor hook body 4-3, the third insetting strip 4-2 is connected to the side of the anchor hook body 4-3 away from the hook body, the third insetting strip 4-2 is matched with the inner cavity of the dovetail groove 1-4, the dovetail groove 1-4 is matched with the third insetting strip 4-2 in a gap, and the gap is 1 mm.

[0043] The following will be described in combination with examples of different application scenarios.

[0044] Example 1

[0045] The lifting hook 2 is used to lift a plurality of woven belts with lifting lugs, and the assembly steps are as follows:

[0046] First step: Prepare two inverted L-shaped cranes A and B, and make sure the base of the crane is movable on wheels. Adjust the position of the crane so that the distance between the ends of the horizontal arm is 10 cm, and then park the base of the crane and position it;

[0047] Second step: Use crane A to lift the base column 1 at the first lifting ring 1-1 to the installation position and hover;

[0048] Third step: Use crane B to lift the hook 2 at the second lifting ring 2-1, and operate crane B to rotate the horizontal arm so that the hook 2 gradually approaches the base column 1;

[0049] Fourth step: The operator manually holds the hook 2 or uses a bent steel pipe to assist the operation, inserts the first inlay strip 2-2 of the hook 2 into the inlay seat 1-3 of the base column 1, and then operates crane B to drop the hook so that the first inlay strip 2-2 is completely inserted into the bottom of the inlay seat 1-3;

[0050] Fifth step: Repeat the third and fourth steps to stably install the remaining three hooks 2 with the base column 1;

[0051] Sixth step: After the installation of all four hooks 2 is completed, crane A drops the hook to place the assembled lifting tool in the tool storage area, and then the crane hook lifts the lifting tool for lifting multiple woven belts with lifting lugs.

[0052] If the size of the base column 1 and the hook 2 used at the work site is small and the operator can carry it (for example, the single weight is less than 15 Kg), first hang the base column 1 on a dedicated hook beam, and then manually carry the hook 2 for inlay installation. The work site often encounters situations such as lifting and transporting slag pans, slag pots, cross-over flat cars, and track-type furnace dismantling cars for relocation and installation, or up and down converter and continuous casting platforms. If direct hoisting is used, the rigging is not easy to hang into the hook head of the crane. At this time, a ring chain with steel rings at both ends can be used, and the advantage of the lifting assembly with four hooks 2 can be utilized. One end of multiple ring chains is hung into the hook head of the lifting assembly, and then hoisted, which is convenient and practical.

[0053] Example 2

[0054] Use anchor hook 4 for slag cleaning, and the assembly steps are as follows:

[0055] The first to fifth steps are consistent with example 1;

[0056] Sixth step: After the installation of all four anchor hook bodies 4-3 is completed, crane A drops the hook to place the assembled lifting tool in the tool storage area, and then the crane hook lifts the lifting tool for cleaning the slag adhered to the mouth of the converter, AOD furnace, electric arc furnace, ladle, hot metal ladle, and hot metal pot.

[0057] Anchor hook 2 can be used not only for cleaning slag, but also for lifting multiple woven bags with lifting lugs and other occasions that require lifting multiple items with lifting lugs, with a wide range of applications.

[0058] Example 3

[0059] The shell is broken using impact cone 3. The assembly steps are as follows:

[0060] Step 1: Prepare two inverted L-shaped cranes, A and B, with wheeled, movable bases. Adjust the crane positions so that the distance between the ends of the booms is 10cm, then position the crane base trolley. Place cones 3-5 on the movable trolley for assembly.

[0061] Step 2: Use crane A to lift the base column 1 at the first lifting ring 1-1 and suspend it in the installation position;

[0062] Step 3: Assemble the second inlay strip 3-2 and the vertical arm 3-3 into one piece. Use crane B to lift the impact cone 3 at the third lifting ring 3-1. Operate crane B to rotate the horizontal arm so that the impact cone 3 gradually approaches the base column 1.

[0063] Step 4: The operator holds the impact cone 3 by hand or uses a thin steel pipe with a bend to assist in the operation, inserts the second inlay strip 3-2 of the impact cone 3 into the inlay seat 1-3 of the base column 1, and then operates the crane to lower the hook so that the second inlay strip 3-2 is fully inserted into the bottom of the inlay seat 1-3;

[0064] Step 5: Move the trolley with cone 3-5 to below the vertical arm 3-3, and make fine adjustments to align the positioning hole 3-7 at the bottom of the vertical arm 3-3 with the positioning hole 3-7 at the top cylinder 3-6 of the cone 3-5. Then, insert the two fixing pins 3-4 into the positioning holes 3-7 at the top and bottom of the vertical arm 3-3 respectively, so that the two vertical arms 3-3 are securely connected and the vertical arm 3-3 is securely connected to the cone 3-5. Finally, insert the positioning pin 3-8 into the end of the fixing pin 3-4 for positioning to prevent slippage and ensure safety during the working process.

[0065] Step 6: After installation, crane A lowers its hook to place the assembled lifting device in the tool storage area. Then, the crane hook lifts the device to break the crust. Before breaking the crust, cone 3-5 is hoisted above the crust container and left to heat for 5 minutes. Then, it is lowered and a layer of release agent is applied to the surface of cone 3-5 by dipping to prevent or minimize slag adhesion during breaking. During breaking, the lifting device is first lifted 1 meter by the crane hook, and then quickly lowered to impact cone 3 and the crust. Under the kinetic energy generated by the large weight of cone 3 and the large pressure of cone 3-5, the iron and slag crust on the molten iron ladle or the steel and slag crust on the steel ladle is broken.

[0066] When breaking the crust of the ladle, only one hole is needed to be broken, so only one or two impacts are needed, as long as the bottom blowing gas can escape through the liquid surface. If the slag crust needs to be broken into scattered pieces for the ladle to pour into the mixing furnace or iron ladle, multiple impacts are needed.

Claims

1. A multi-functional spreader assembly, characterized by: It comprises a base column (1), a hook (2), an impact cone (3) and an anchor hook (4). The base column (1) comprises a base column body (1-2), which is a cuboid and is provided with an inlay seat (1-3) around; the top of the base column body (1-2) is provided with a first lifting ring (1-1), and the outer wall of the base column body (1-2) is fixedly connected with the inlay seat (1-3); the inlay seat (1-3) is vertically provided with a dovetail groove (1-4). The hook (2) comprises a vertical hook (2-3), the top of which is provided with a second lifting ring (2-1), and the side of the vertical hook (2-3) away from the hook body is connected with a first inlay strip (2-2), which is matched with the inner cavity of the dovetail groove (1-4). The impact cone (3) comprises two symmetrical vertical arms (3-3), the top of each vertical arm (3-3) is provided with a third lifting ring (3-1), and the inner side opposite to each other between the vertical arms (3-3) is connected with a second inlay strip (3-2), which is matched with the inner cavity of the dovetail groove (1-4); the impact cone (3) further comprises a cone body (3-5), the top of which is provided with a cylinder (3-6), the outer diameter of the cylinder (3-6) is the same as the distance between the two vertical arms (3-3); the upper and lower parts of the vertical arms (3-3) and the outer periphery of the cylinder (3-6) are symmetrically provided with positioning holes (3-7), and the vertical arms (3-3) and the cone body (3-5) are connected by inserting fixing pins (3-4) into the positioning holes (3-7), and the end of the fixing pin (3-4) is inserted with a positioning pin (3-8). The anchor hook (4) comprises an anchor hook body (4-3), which is a barb, and the inside of the barb is chamfered; the top of the anchor hook body (4-3) is provided with a fourth lifting ring (4-1), and the side of the anchor hook body (4-3) away from the hook body is connected with a third inlay strip (4-2), which is matched with the inner cavity of the dovetail groove (1-4).

2. A multi-functional sling assembly as claimed in claim 1, wherein: The base column body (1-2) and the inlay seat (1-3) are fixedly connected by penetrating pins.

3. A multi-functional sling assembly as claimed in claim 2, wherein: The size of the dovetail groove (1-4) near the base column body (1-2) is larger than that away from the base column body (1-2).

4. A multi-functional sling assembly as claimed in claim 3, wherein: The bottom of the dovetail groove (1-4) away from the base column body (1-2) is in the shape of a downward slope.

5. A multi-functional sling assembly as claimed in claim 4, wherein: The dovetail groove (1-4) is matched with the first inlay strip (2-2), the second inlay strip (3-2) and the third inlay strip (4-2) with a gap, and the matching gap is 1-2mm.

6. A multi-functional lifting assembly as claimed in any one of claims 1 to 5 wherein: The fixing pin (3-4) is a square pin, and the positioning hole (3-7) is a square hole matched with the fixing pin (3-4).

7. A multi-functional lifting assembly as claimed in any one of claims 1 to 5 wherein: The outer wall of the cone body (3-5) is bonded with a release agent.

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