Hanging lug of steel ladle cover

Abstract

The utility model relates to the technical field of converter smelting equipment, in particular to a steel ladle cover hanging lug. The steel ladle cover hanging lug comprises a hanging lug body, wherein the hanging lug body comprises a connecting plate and a hanging plate; the connecting plate is provided with a guide face which inclines upwards in the direction from the fixed end to the extending end. The hanging plate extends out of the connecting plate and extends downwards to the horizontal position lower than the fixed end. A first curved surface and a second curved surface with different curvatures and a first limiting section connected with the first curved surface and the second curved surface are arranged on the side, facing the guide surface, of the hanging plate. When the steel ladle cover is in the horizontal state, the trunnion is located in the first curved surface under the normal condition. When the steel ladle cover is overturned, the trunnion can slide along the first limiting section. When the steel ladle cover is in a vertical state, the trunnion can be just located in the second curved surface. According to the utility model, the trunnion can move stably on the guide surface of the hanger body without being blocked, the operation is stable, and the reliability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of converter smelting equipment, and more specifically to a ladle cover hanging ear. Background Art

[0002] In the steelmaking process, the temperature control of molten steel is of vital importance. Fluctuations in the temperature of molten steel will disrupt the entire production rhythm and bring a series of adverse effects to the continuous casting work. Automatic lidding of the ladle ensures automatic lidding, lidding, lidded transportation, and lidded tipping of the ladle from steel tapping from the converter to continuous casting. It can minimize the radiation and convection heat loss of the ladle (molten steel), and become an important means to save energy and reduce consumption, clean and environmentally friendly, and reduce the workload of personnel in the steelmaking process. It is also of great benefit to the quality assurance of molten steel. Its structure is as follows: the ladle cover can be opened and closed on the top of the ladle body, and the ears are installed on the ladle cover. The side of the top of the ladle body is provided with ear shafts used in conjunction with the ears. The ladle cover can be opened or closed relative to the ladle body through the lidding mechanism. Common ladle cover ears include: Figure 1 As shown, both side walls cooperating with the ear shaft are straight surfaces, and the ends of the hanging ears extend inwards. During the process of covering, uncovering and tipping over the ladle, the hanging ear structure of the ladle cover makes it easy for the covering to be unsmooth, and the cover of the ladle often falls off when the ladle is tipped over, and the ladle cover falls off the ladle hanging ear shaft, which not only affects the smooth operation of the production, but also easily causes the ladle cover to fall, deform, and become scrapped and damaged.

[0003] The utility model patent with the authorization announcement number CN214161379U provides a ladle cover hanging ear, a ladle cover and a ladle, wherein the ladle cover hanging ear includes a bottom plate and a locking hook block, the end of the bottom plate used for fixed connection with the ladle cover is a fixed end, the end of the bottom plate away from the fixed end is a hook end, the hook end is set at an angle with the fixed end; the fixed end is fixedly connected to the hook end; the locking hook block is set on the hook end, the locking hook block is rotatably connected to the bottom plate, and when the locking hook block rotates to hook the ladle cover fixing rod, it can prevent the ladle cover fixing rod from sliding out of the hook end along the edge of the hook end. The above patent limits the ladle cover from falling off by setting a locking hook block, but the way the locking hook block is movably connected to the bottom plate is relatively unstable. The locking hook block is subjected to greater force when cooperating with the ladle cover fixing rod, and is prone to breakage and damage at the connection with the bottom plate after long-term use, which leads to the problem of failure of the locking hook block. Based on this, the prior art still needs to be improved. Utility Model Content

[0004] In view of this, the utility model provides a ladle cover hanging ear, which can at least solve the problem that the existing ladle cover hanging ear is unstable in structure and easily separated from the ear shaft during use.

[0005] The utility model provides a hanging ear for a ladle cover, comprising a hanging ear body, wherein the hanging ear body comprises a connecting plate and a hanging plate; the connecting plate comprises a fixed end connected to the ladle cover, and an extending end away from the fixed end, and the connecting plate comprises a guide surface, and when the ladle cover is in a horizontal state, the guide surface is inclined upward in a direction from the fixed end to the extending end. The hanging plate extends from the extending end, and the hanging plate extends downward to a horizontal position lower than the fixed end. A limiting surface is provided on one side of the hanging plate facing the guiding surface, and the limiting surface comprises at least a first limiting section that is connected to the guiding surface in a circular arc transition to form a first curved surface, and a second limiting section that is connected to the first limiting section in a circular arc transition to form a second curved surface, wherein the curvature of the first curved surface is greater than the curvature of the second curved surface.

[0006] In some embodiments, when the ladle cover is in a horizontal state, the hanging plate and the connecting plate are respectively located on both sides of the vertical plane where the center of the first curved surface is located.

[0007] In some embodiments, when the ladle cover is in a horizontal state, the lower end of the second limiting segment is closer to the vertical plane where the center of the first curved surface is located than the upper end of the first limiting segment.

[0008] In some embodiments, when the ladle cover is in a horizontal state, the second curved surface is located higher in the vertical direction than the bottom end of the guide surface.

[0009] In some embodiments, the included angle between the first limiting segment and the extension surface of the guide surface is 45°-60°.

[0010] In some embodiments, the first limiting segment is a curved surface, and its curvature is smaller than the curvature of the second curved surface.

[0011] In some embodiments, the included angle between the extension surfaces of the first limiting segment and the second limiting segment is 130°-150°.

[0012] In some embodiments, the outer peripheries of the connecting plate and the suspension plate are provided with chamfers.

[0013] In some embodiments, the hanging ear body is a flat steel, and its width in the vertical direction is greater than its thickness in the horizontal direction.

[0014] In some embodiments, reinforcing ribs are provided at the connection between the connecting plate and the ladle cover.

[0015] The beneficial effects of the utility model are as follows: the application sets the hanging plate to extend downward to a horizontal position lower than the fixed end, and sets a limited surface on the side of the hanging plate facing the guide surface, and the limited surface at least includes a first limiting section that is connected to the guide surface in a circular arc transition to form a first curved surface, and a second limiting section that is connected to the first limiting section in a circular arc transition to form a second curved surface, wherein the curvature of the first curved surface is greater than the curvature of the second curved surface. It can be achieved that when the ladle cover is in a horizontal state, the ear axis is normally in the first curved surface. When there is a lot of molten steel and filter residue in the ladle, the ear body hooks on the ear axis. When the ladle cover is overturned, the ear axis will slide along the first limiting section. When the ladle cover is in a vertical state, the ear axis can be just located in the second curved surface, thereby preventing the ladle cover from falling off. The lug body of the present application is provided with a first curved surface and a second curved surface of different curvatures, and a guide surface and a limit surface that limit the first curved surface and the second curved surface, so that the ear shaft can move smoothly and without jamming in the lug body, which can effectively solve the problem that the ladle is not easy to fall off when the slag is turned over and the cover is automatically removed, and the cover removal process is smooth, ensuring the stable operation of the ladle with the cover. The structure is stable and the reliability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the structure of the hanging ear body in the prior art;

[0018] Figure 2 A diagram showing the structural coordination between the hanging ear body and the ladle cover provided in an embodiment of the utility model;

[0019] Figure 3 It is a matching diagram of the hanging ear body and the ear shaft when the ladle cover is in a horizontal state;

[0020] Figure 4 It is a matching diagram of the hanging ear body and the ear shaft when the ladle cover is in a tilted state;

[0021] Figure 5 This is a diagram showing the coordination between the ear body and the ear shaft when the ladle cover is in a vertical state.

[0022] Description of reference numerals:

[0023] 100. Hanging ear body; 110. Connecting plate; 101. Guide surface; 120. Hanging plate; 121. First limiting section; 122. Second limiting section; 130. First curved surface; 140. Second curved surface; 150. Ear shaft; 160. Ladle cover. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0025] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0026] refer to Figure 2 The utility model provides a hanging ear for a ladle cover, comprising a hanging ear body 100, wherein the hanging ear body 100 comprises a connecting plate 110 and a hanging plate 120. The connecting plate 110 has a fixed end connected to the ladle cover 160, and an extending end away from the fixed end, and the connecting plate 110 has a guide surface 101. When the ladle cover 160 is in a horizontal state, the guide surface 101 is lower and tilted upward from the fixed end to the extending end. The hanging plate 120 extends from the extending end, and the hanging plate 120 extends downward to a horizontal position lower than the fixed end. When the ladle cover 160 is closed relative to the ladle cover by using a cover-lifting mechanism, the ear shaft 150 on the ladle enters the hanging ear body 100 along the guide surface 101. A limiting surface is set on the side of the suspension plate 120 facing the guide surface 101, and the limiting surface at least includes a first limiting section 121 which is connected to the guide surface 101 in a circular arc transition to form a first curved surface 130, and a second limiting section 122 which is connected to the first limiting section 121 in a circular arc transition to form a second curved surface 140, wherein the curvature of the first curved surface 130 is greater than the curvature of the second curved surface 140.

[0027] When the ladle cover 160 is in a horizontal state (0°), the trunnion 150 is normally located within the first curved surface 130 (eg, Figure 3 As shown in the figure, the highest point of the first curved surface is the hanging support point of the ladle cover hanging plate. When there is a lot of molten steel and filter residue in the ladle, the ear body 100 hooks the ear shaft 150. When the ladle cover 160 is tilted, the ear shaft 150 will slide along the first limit section 121. For example, when the ladle cover 160 is tilted by 45°, the ear shaft 150 is at the position of the first limit section 121 (as shown in the figure). Figure 4 As shown in FIG. 1 ), when the ladle cover 160 is in a vertical state (90°), the trunnion 150 can be just located inside the second curved surface 140 and contact a point on the second curved surface 140, thereby preventing the ladle cover 160 from falling off (as shown in FIG. 1 ). Figure 5As shown). Moreover, the ear body 100 of the present application can make the ear shaft 150 move smoothly and without jamming in the ear body 100 by setting the first curved surface 130 and the second curved surface 140 with different curvatures, and the guide surface 101 and the limit surface that limit the first curved surface 130 and the second curved surface 140, which can effectively solve the problem that the ladle cover 160 is easy to fall off when the ladle is overturned and the cover is automatically removed. The cover removal process is smooth, ensuring the stable operation of the ladle with cover. And the overall structure is stable and highly reliable.

[0028] In some embodiments, when the ladle cover 160 is in a horizontal state, the suspension plate 120 and the connecting plate 110 are respectively located on both sides of the vertical plane where the center of the first curved surface 130 is located. This design can avoid interference with the entry and exit of the ear shaft 150 during automatic cover addition and removal.

[0029] In some embodiments, when the ladle cover 160 is in a horizontal state, the lower end of the second limit section 122 is closer to the vertical plane where the center of the first curved surface 130 is located than the upper end of the first limit section 121, so that in the process of the ladle cover 160 tilting from a horizontal state to a vertical state, the ear axis 150 slides into the position of the second curved surface 140 along the first limit section 121, and no longer continues to move along the second limit section 122, thereby preventing the ear body 100 from detaching from the ear axis 150.

[0030] In some embodiments, when the ladle cover 160 is in a horizontal state, the second curved surface 140 is positioned higher in the vertical direction than the bottom end of the guide surface 101, and the second curved surface 140 is close to the end of the ear axis 150, so as to adapt the staying position of the ear axis 150 on the hanging ear body 100 when the ladle cover 160 is tilted.

[0031] In some embodiments, the included angle between the first limiting segment 121 and the extension surface of the guide surface 101 is 45°-60° to match the outer contour of the ear shaft 150 , so as to facilitate the ear shaft 150 to be inserted into the first curved surface 130 .

[0032] In some embodiments, the first limiting section 121 is an arc surface, and its curvature is smaller than the curvature of the second curved surface 140. The design of the arc surface ensures that when the ladle is overturned, the ear axis 150 is always at the highest point of the limiting surface along with the tilting angle of the ladle, and the ladle cover 160 can also move smoothly and slowly to the adjusted position without a large impact causing the ladle cover 160 to fall off.

[0033] In some embodiments, the included angle between the extension surfaces of the first limit section 121 and the second limit section 122 is 130°~150°, so that the second curved surface 140 defined between the first limit section 121 and the second limit section 122 can not only limit the staying position of the ear axis 150, but also avoid the ear axis 150 from being stuck in movement due to severe impact caused by the curvature of the second curved surface 140 being too small.

[0034] In some embodiments, chamfers are provided on the periphery of the connecting plate 110 and the suspension plate 120 to serve as guides during assembly, helping the ear body 100 to be more accurately and smoothly installed on the ear shaft 150, thereby improving assembly efficiency, reducing friction between parts, and reducing the force required for assembly.

[0035] In some embodiments, the ear body 100 is a flat steel, and its width in the vertical direction is greater than its thickness in the horizontal direction. The flat steel design can reduce the use of materials while ensuring rigidity, which helps to reduce costs.

[0036] In some embodiments, reinforcing ribs are provided at the connection between the connecting plate 110 and the ladle cover 160 to further improve the connection stability.

[0037] The ladle cover hanging ears of the present application can be manufactured and applied in the following ways:

[0038] 1) Design and manufacture the lug body 100 according to the size of the ladle cover 160 and the size of the ladle.

[0039] 2) According to the dimension line, cut off the original 160 hanging ears of the ladle cover and make a bevel.

[0040] 3) Align the new hanging ear body 100 and the ladle cover 160, and weld them, correcting them while welding.

[0041] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A ladle cover hanging ear, characterized in that: The invention comprises a hanging ear body (100), wherein the hanging ear body (100) comprises a connecting plate (110) and a hanging plate (120); the connecting plate (110) has a fixed end connected to the ladle cover (160), and an extending end away from the fixed end; the connecting plate (110) has a guide surface (101); when the ladle cover (160) is in a horizontal state, the guide surface (101) is inclined upward from the fixed end to the extending end; the hanging plate (120) extends from the extending end, and the hanging plate (120) is 20) extends downward to a horizontal position lower than the fixed end; a limiting surface is provided on the side of the suspension plate (120) facing the guide surface (101), the limiting surface at least comprising a first limiting section (121) connected to the guide surface (101) by a circular arc transition to form a first curved surface (130), and a second limiting section (122) connected to the first limiting section (121) by a circular arc transition to form a second curved surface (140), wherein the curvature of the first curved surface (130) is greater than the curvature of the second curved surface (140).

2. The ladle cover hanging ear according to claim 1, characterized in that: When the ladle cover (160) is in a horizontal state, the hanging plate (120) and the connecting plate (110) are respectively located on both sides of a vertical plane where the center of the first curved surface (130) is located.

3. The ladle cover hanging ear according to claim 1, characterized in that: When the ladle cover (160) is in a horizontal state, the lower end of the second limiting section (122) is closer to the vertical plane where the center of the first curved surface (130) is located than the upper end of the first limiting section (121).

4. The ladle cover hanging ear according to claim 1, characterized in that: When the ladle cover (160) is in a horizontal state, the second curved surface (140) is located higher in the vertical direction than the bottom end of the guide surface (101).

5. The ladle cover hanging ear according to claim 1, characterized in that: The included angle between the first limiting section (121) and the extended surface of the guide surface (101) is 45° to 60°.

6. The ladle cover hanging ear according to claim 1, characterized in that: The first limiting section (121) is a curved surface, the curvature of which is smaller than the curvature of the second curved surface (140).

7. The ladle cover hanging ear according to claim 1, characterized in that: The included angle between the extension surfaces of the first limiting section (121) and the second limiting section (122) is 130° to 150°.

8. The ladle cover hanging ear according to claim 1, characterized in that: The outer peripheries of the connecting plate (110) and the hanging plate (120) are provided with chamfers.

9. The ladle cover hanging ear according to claim 1, characterized in that: The hanging ear body (100) is a flat steel, and its width in the vertical direction is greater than its thickness in the horizontal direction.

10. The ladle cover hanging ear according to claim 1, characterized in that: A reinforcing rib is provided at the connection between the connecting plate (110) and the ladle cover (160).

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