Large bridge type metallurgical ladle crane plate hook bushing and manufacturing method thereof

Abstract

The invention relates to the technical field of cranes, and discloses a large bridge type metallurgy ladle crane plate hook bush and a manufacturing method thereof.The large bridge type metallurgy ladle crane plate hook bush comprises a plate hook, a bush body, a bush body and a bush body, and the plate hook is provided with a stress face and used for making contact with a hoisted object; the lining is located on the stress face, and a lubricating rod is arranged in the lining and used for lubricating the contact face between the lining and the hoisted object; a hole is formed in the middle of the lining, and the lubricating rod is located in the hole. The lubricating rod is made of a graphite rod; a mounting groove is formed in the stress surface of the plate hook, and the lining is fixedly connected into the mounting groove; the bush is fixedly connected into the mounting groove in a welding fixing mode and a threaded fixing mode. The lining is arranged on the stress surface of the plate hook, so that the plate hook is more wear-resistant in the working process, the conditions of serious wear and deformation of the plate hook in the long-time working process are prevented, the wear resistance of the plate hook is improved, the service life of the plate hook is prolonged, and the applicability of the plate hook is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cranes, in particular to a large-scale bridge-type metallurgical casting crane plate hook bushing and a manufacturing method thereof. BACKGROUND

[0002] In modern industrial production, especially in the metallurgical industry, large-scale bridge cranes can accurately and efficiently complete a series of heavy operations such as casting and hoisting. Among them, the plate hook, as the core component of the crane for grabbing and transporting heavy objects, its performance is directly related to the production efficiency and operation safety. And the plate hook bushing, as the key interface between the plate hook and the hoisted object, needs to bear a lot of pressure and frequent friction, its stability and durability are crucial, and directly determine the reliable operation of the entire plate hook and even the crane system.

[0003] The working surface bushing of the traditional fixed gantry plate hook is usually made of Q235A steel plate through bending process into an arc plate. This material performs well in some conventional structural parts, for example, its good weldability and processability make the preliminary manufacturing of the bushing relatively convenient. However, in the high-strength, long-time, heavy-load working environment of large-scale metallurgical casting cranes, its performance limitations are highlighted.

[0004] The existing technology still has many deficiencies in the application of plate hook bushings. First, the Q235A steel plate used in the traditional fixed gantry plate hook is bent into a bushing, which has certain processability and weldability, but its material itself has low tensile strength and wear resistance, which cannot meet the needs of extreme working conditions such as high temperature, high load and frequent operation in the metallurgical industry. Second, since the bushing and the plate hook body are usually fixed by welding, it is difficult to disassemble and replace, the maintenance cycle is long, which increases the downtime of the equipment, and is not conducive to large-scale continuous production. In addition, during long-term high-strength use, such bushings are prone to plastic deformation and severe wear, which affects the structural integrity and safety of the plate hook. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a large-scale bridge-type metallurgical casting crane plate hook bushing and a manufacturing method thereof, which solves the problem that the Q235A steel plate is bent into a bushing in the prior art, thereby it is difficult to meet the needs of extreme working conditions such as high temperature, high load and frequent operation in the metallurgical industry.

[0006] To achieve the above purpose, the present application realizes the following technical scheme: a large-scale bridge-type metallurgical casting crane plate hook bushing, comprising: a plate hook, the plate hook is provided with a stress surface for contacting with a hoisted object; a bushing located at the stress surface, the bushing is internally provided with a lubricating rod, the lubricating rod is used for lubricating the contact surface between the bushing and the hoisted object.

[0007] Preferably, the middle of the bushing is provided with a hole, and the lubricating rod is arranged in the hole.

[0008] Preferably, the lubricating rod is made of graphite.

[0009] Preferably, the bushing is made of high-speed steel.

[0010] Preferably, the force receiving surface of the plate hook is provided with a mounting groove, and the bushing is fixedly connected in the mounting groove.

[0011] Preferably, the fixing manner of the bushing fixedly connected in the mounting groove includes welding fixing and screw fixing.

[0012] Preferably, the outer wall of the plate hook is provided with a bolt, the outer side of the bushing is fixedly connected with an ear plate, the inner wall of the mounting groove is provided with a threaded hole, the ear plate is arranged in the interior of the mounting groove, and the end of the bolt is threadedly connected in the middle of the threaded hole after penetrating through the plate hook and the ear plate.

[0013] The application further provides a manufacturing method of the bushing of the plate hook of the large-scale bridge-type metallurgical casting crane. When the fixing manner of the bushing fixedly connected in the mounting groove is welding fixing, the method includes the following steps. The mounting groove is arranged at the force receiving surface of the plate hook. The bushing is arranged in the mounting groove. The bushing is fixedly connected in the mounting groove through welding. The hole is arranged in the middle of the bushing. The lubricating rod is arranged in the hole in the middle of the bushing. When the fixing manner of the bushing fixedly connected in the mounting groove is screw fixing, the method includes the following steps. The mounting groove is arranged at the force receiving surface of the plate hook. The threaded hole is arranged in the inner wall of the mounting groove. The ear plate is fixedly connected to the outer side of the bushing. The ear plate is arranged in the interior of the mounting groove. The bolt is arranged from the outer wall of the plate hook, penetrates through the end of the plate hook and the ear plate, and is threadedly connected in the middle of the threaded hole, so that the bushing is fixed in the mounting groove. The hole is arranged in the middle of the bushing. The lubricating rod is arranged in the hole in the middle of the bushing.

[0014] The application provides a bushing of a plate hook of a large-scale bridge-type metallurgical casting crane and a manufacturing method thereof. 1、The present application places a bushing on the stress surface of the plate hook, so that the plate hook is more wear-resistant during work, preventing the plate hook from being severely worn and deformed during long-term work, thereby improving the wear resistance and service life of the plate hook, and further improving the applicability of the plate hook.

[0015] 2、The present application opens multiple holes in the middle of the bushing and adds lubricant in the multiple holes, and after adding, multiple lubricating rods can be sequentially placed in the multiple holes, thereby conveniently achieving lubrication, and under the action of the multiple lubricating rods, the iron ladle, the steel ladle, the slag tank and the slag basin can self-lubricate the stress surface of the plate hook during the rotation of the rotating body in the air, thereby improving the overall wear resistance of the plate hook. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a plate hook cross-sectional view of the present application; Figure 2 is a bushing schematic view of the present application; Figure 3 is a lubricating rod top view of the present application; Figure 4 is a bolt schematic view of the present application; Figure 5 is a threaded hole schematic view of the present application; Figure 6 is an ear plate schematic view of the present application.

[0017] Among them, 1, plate hook;101, stress surface;2, bushing;3, lubricating rod;4, mounting groove;5, bolt;6, threaded hole;7, ear plate. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the specification of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0019] Embodiment one: Please refer to the drawings of the present application Figure 1 - the drawings of the present application Figure 6 The present application provides a large bridge type metallurgical casting crane plate hook bushing, comprising: Plate hook 1, plate hook 1 is provided with stress surface 101, which is used for contacting with hoisting object; Bushing 2 is located in stress surface 101, and bushing 2 is internally provided with lubricating rod 3, which is used for lubricating the contact surface between bushing 2 and hoisting object.

[0020] The fixing mode of the bushing 2 fixedly connected in the mounting groove 4 is welding fixation, which comprises: A hole is formed in the middle of the bushing 2, and the lubricating rod 3 is located in the hole; the material of the lubricating rod 3 comprises a graphite rod; the material of the bushing 2 comprises high-speed steel; the stress surface 101 is provided with the mounting groove 4, and the bushing 2 is fixedly connected in the mounting groove 4.

[0021] The stress surface 101 is a main bearing area; in order to enhance the wear resistance of the plate hook 1, the mounting groove 4 is formed at the stress surface 101, and the high-strength wear-resistant bushing 2 is embedded in the mounting groove 4. The bushing 2 is made of high-speed steel, has excellent hardness, heat resistance and impact resistance, and is suitable for heavy-load environments in the metallurgical industry. A through hole is formed in the middle of the bushing 2, and the lubricating rod 3 is embedded in the hole. The lubricating rod 3 is made of graphite material and has good self-lubricating property and high-temperature stability. It can continuously lubricate the contact surface between the bushing 2 and the hoisted object during the lifting operation, reduce wear, reduce energy consumption, and improve operation safety and efficiency. The bushing 2 and the mounting groove 4 are fixed by welding process, which ensures that they will not be loose due to vibration or impact during long-term operation, and has high structural reliability.

[0022] Embodiment two: Please refer to the accompanying Figure 1 -Appendix Figure 6 The embodiment of the present application provides a large-scale bridge type metallurgical casting crane hook bushing, which comprises: The plate hook 1 is provided with a stress surface 101 for contacting with a hoisted object; The bushing 2 is located in the stress surface 101, and the bushing 2 is provided with a lubricating rod 3 inside, which is used for lubricating the contact surface between the bushing 2 and the hoisted object; The fixing mode of the bushing 2 fixedly connected in the mounting groove 4 is screw fixation, which comprises: One side of the outer wall of the plate hook 1 is provided with a bolt 5, the outer side of the bushing 2 is fixedly connected with an ear plate 7, the inner wall of the mounting groove 4 is provided with a threaded hole 6, the ear plate 7 is located in the inside of the mounting groove 4, and the end of the bolt 5 is threadedly connected in the middle of the threaded hole 6 after penetrating through the plate hook 1 and the ear plate 7.

[0023] The stress surface 101 of the plate hook body 1 is used for directly contacting with a hoisted object and bearing the main load in the lifting process. In order to enhance the wear resistance and maintenance convenience of this part, the mounting groove 4 is arranged at the stress surface 101, and the replaceable wear-resistant bushing 2 is arranged in the groove. The bushing 2 is provided with the self-lubricating lubricating rod 3 inside, which is preferably made of graphite material and is used for continuously lubricating the contact surface between the bushing 2 and the hoisted object during the lifting operation, thereby significantly reducing the friction coefficient and improving the overall durability of the structure.

[0024] In the embodiment two, the bushing 2 is not fixed by traditional welding, but by screwing, so as to improve the convenience of maintenance and replacement. The specific structure is that a bolt 5 is arranged on one side of the outer wall of the plate hook 1, and the outer part of the bushing 2 is connected with the structure ear plate 7, which is arranged in the installation groove 4, so as to realize stable structure cooperation. Meanwhile, the inner wall of the installation groove 4 is provided with a threaded hole 6, the bolt 5 is threaded through the plate hook 1 and the ear plate 7, and the end part is screwed in the middle part of the threaded hole 6, so as to realize screwing cooperation, thereby forming a firm positioning connection. The structure has good detachability and structural rigidity, is suitable for heavy load operation occasions which need frequent maintenance or replacement of the bushing 2, avoids the problem that the performance of the plate hook 1 is reduced due to the welding heat affected zone, and has higher industrial practicability and design rationality.

[0025] Embodiment three The manufacturing method of the large bridge type metallurgical casting crane plate hook bushing described below can be correspondingly referred to the large bridge type metallurgical casting crane plate hook bushing described above.

[0026] The manufacturing method of the large bridge type metallurgical casting crane plate hook bushing is also provided, and the manufacturing method comprises the following steps. When the fixing mode of the bushing 2 fixedly connected in the installation groove 4 is welding, the following steps are included. An installation groove 4 is arranged at the stress surface 101 of the plate hook 1; The bushing 2 is placed in the installation groove 4; The bushing 2 is fixedly connected in the installation groove 4 by welding; A hole is arranged in the middle part of the bushing 2; The lubricating rod 3 is arranged in the hole in the middle part of the bushing 2; When the fixing mode of the bushing 2 fixedly connected in the installation groove 4 is screwing, the following steps are included. An installation groove 4 is arranged at the stress surface 101 of the plate hook 1; A threaded hole 6 is arranged in the inner wall of the installation groove 4; An ear plate 7 is fixedly connected on the outer side of the bushing 2; The ear plate 7 is arranged in the inner part of the installation groove 4; The bolt 5 is screwed in the middle part of the threaded hole 6 from the end part of the plate hook 1 and the ear plate 7, so as to fix the bushing 2 in the installation groove 4; A hole is arranged in the middle part of the bushing 2; The lubricating rod 3 is arranged in the hole in the middle part of the bushing 2.

[0027] The manufacturing method of the embodiment can be used to execute the above-mentioned device embodiment, and the principle and technical effect are similar, which will not be repeated here.

[0028] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A large bridge-type metallurgical casting crane tongs bushing, characterized in that, include: A plate hook (1) is provided with a force-bearing surface (101) for contacting the object being hoisted; The bushing (2) is located on the force-bearing surface (101). A lubricating rod (3) is provided inside the bushing (2). The lubricating rod (3) is used to lubricate the contact surface between the bushing (2) and the hoisting object.

2. The hook bushing for a large bridge-type metallurgical casting crane according to claim 1, characterized in that, The bushing (2) has a hole in the middle, and the lubricating rod (3) is located in the hole.

3. The hook bushing for a large bridge-type metallurgical casting crane according to claim 1, characterized in that, The lubricating rod (3) is made of graphite rod.

4. The hook bushing for a large bridge-type metallurgical casting crane according to claim 1, characterized in that, The bushing (2) is made of high-speed steel.

5. A large bridge-type metallurgical casting crane plate hook bushing according to claim 1, characterized in that, The plate hook (1) has an installation groove (4) on its force-bearing surface (101), and the bushing (2) is fixedly connected in the installation groove (4).

6. A large bridge-type metallurgical casting crane plate hook bushing according to claim 5, characterized in that, The bushing (2) is fixedly connected in the mounting groove (4) by welding and threaded fixing.

7. A large bridge-type metallurgical casting crane plate hook bushing according to claim 6, characterized in that, A bolt (5) is provided on one side of the outer wall of the plate hook (1), an ear plate (7) is fixedly connected to the outer side of the bushing (2), a threaded hole (6) is opened on the inner wall of the mounting groove (4), the ear plate (7) is located inside the mounting groove (4), and the end of the bolt (5) passes through the plate hook (1) and the ear plate (7) and is threaded to the middle of the threaded hole (6).

8. The method for manufacturing a hook bushing for a large bridge-type metallurgical casting crane according to claim 1, characterized in that, The production method includes: When the bushing (2) is fixedly connected in the mounting groove (4) by welding, the following steps are included: An installation groove (4) is made at the force-bearing surface (101) of the plate hook (1); Place the bushing (2) into the mounting slot (4); The bushing (2) is fixedly connected to the mounting groove (4) by welding; A hole is made in the middle of the bushing (2); Place the lubricating rod (3) into the hole in the middle of the bushing (2); When the fixing method of the fixed connection (2) within (4) is threaded fixing, the following steps are included: An installation groove (4) is made at the force-bearing surface (101) of the plate hook (1); A threaded hole (6) is made in the inner wall of the mounting groove (4); Ear plate (7) is fixedly connected to the outside of bushing (2); Place the ear plate (7) inside the mounting slot (4); The bolt (5) is passed through the end of the plate hook (1) and the ear plate (7) from one side of the outer wall of the plate hook (1) and threaded into the middle of the threaded hole (6), thereby fixing the bushing (2) in the mounting groove (4); A hole is made in the middle of the bushing (2); Place the lubricating rod (3) into the hole in the middle of the bushing (2).

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