Self-adaptive hanging structure of converter

Abstract

The invention discloses a self-adaptive hanging structure of a converter, including vertical connecting rod mechanisms connecting the lower edge of a backing ring body and a lower half converter body of the converter, and horizontal connecting rod mechanisms connecting the upper edge of the backing ring body and an upper half converter body of the converter; the horizontal connecting rod mechanisms are located above the vertical connecting rod mechanisms, the plane where the axis of a trunnion on the backing ring body and the axis of the backing ring body are located serves as the first reference plane, the symmetric center of each vertical connecting rod mechanisms is located in the radiation area of the first included angle, the two planes forming the first included angle coincide with the axis of the backing ring body, and the included angles being 15 degrees and 50 degrees are formed between the two planes and the first reference plane respectively. The invention makes the converter tilting without abnormal noise and running stably, which not only eliminates the super-static over-constraining problem, but also facilitates the converter suspension connecting rod mechanism to adapt to the working conditions, improves the service life of the hanging mechanism, makes the equipment long-term maintenance-free, realizes the main parts interchanging of the connecting rod mechanism, reduces equipment spare parts and equipment maintenance workload.

Claims

1. A self-adaptive hanging structure of a converter, which includes vertical connecting rod mechanisms connecting the lower edge of a backing ring body and a lower half converter body of the converter, and horizontal connecting rod mechanisms connecting the upper edge of the backing ring body and an upper half converter body of the converter: each horizontal connecting rod mechanism is located above the vertical connecting rod mechanisms, the plane where the axis of a trunnion on the backing ring body and the axis of the backing ring body are located serves as the first reference plane, the symmetric center of each vertical connecting rod mechanisms is located in the radiation area of the first included angle, the two planes forming the first included angle coincide with the axis of the backing ring body, and the included angles being 15 degrees and 50 degrees are formed between the two planes and the first reference plane respectively: each vertical connecting rod mechanism is symmetrically arranged about the first reference plane, and each horizontal connecting rod mechanism is symmetrically arranged about the first reference plane: the horizontal connecting rod mechanism includes a first connecting rod seat, a horizontal connecting rod and a second connecting rod seat: the first connecting rod seat sets on the upper half of the converter body, and the second connecting rod seat sets on the upper edge of the backing ring body: the horizontal connecting rod hinges to the first connecting rod seat and the second connecting rod seat respectively: the horizontal connecting rod mechanism has a mounting position reference mark which is in the radiation area of the second included angle, the plane where the center of symmetry of the vertical connecting rod mechanism and the axis of the backing ring body are located serves as the second reference plane, the mounting position reference mark is in the radiation area of the second included angle, both planes forming the second included angle coincide with the axis of the backing ring body and form a included angle of ?10 degree and 10 degree respectively with the second reference plane.

2. The self-adaptive hanging structure of a converter according to claim 1, characterized in that the center of symmetry of each vertical connecting rod mechanism is co-planar with the axis of the backing ring body.

3. The self-adaptive hanging structure of a converter according to claim 2, characterized in that the mounting position reference mark is on the horizontal connecting rod.

4. The self-adaptive hanging structure of a converter according to claim 3, characterized in that the mounting position reference mark is at the center of the horizontal connecting rod.

5. The self-adaptive hanging structure of a converter according to claim 4, characterized in that the mounting position reference mark is an identification hole set on the horizontal connecting rod.

6. The self-adaptive hanging structure of a converter according to claim 2, characterized in that the vertical connecting rod mechanism comprises a third connecting rod seat, a vertical connecting rod and a fourth connecting rod seat; the third connecting rod seat sets on the lower half of the converter body, and the fourth connecting rod seat sets on the lower edge of the backing ring body: the third connecting rod seat and the fourth connecting rod seat are hinged to the vertical connecting rod respectively.

7. The self-adaptive hanging structure of a converter according to claim 6, characterized in that the horizontal connecting rod in each horizontal connecting rod mechanism has the same shape and size as the vertical connecting rod in each vertical connecting rod mechanism.

8. The self-adaptive hanging structure of a converter according to claim 7, characterized in that the first connecting rod seat and the second connecting rod seat are respectively rotatably connected to the orizontal connecting rod by means of a first joint bearing and a first articulated shaft, and the third connecting rod seat and the fourth connecting rod seat are respectively rotatably connected to the vertical connecting rod by means of a second joint bearing and a second articulated shaft; the first joint bearing and the second joint bearing have the same structure and size, and the first articulated shaft and the second articulated shaft have the same structure and size.

Description

DESCRIPTION OF DRAWINGS

[0021] To enable the purpose, the technical solution and the advantages of the present invention to be more clear, the present invention will be preferably described in detail below in combination with the drawings, wherein:

[0022] FIG. 1 is a schematic diagram of a self-adaptive hanging structure of a converter in the present invention;

[0023] FIG. 2 is a top view of FIG. 1;

[0024] FIG. 3 is a K-directional view of FIG. 2;

[0025] FIG. 4 is an enlarged view at I of FIG. 1;

[0026] FIG. 5 is an enlarged view at II in FIG. 2.

[0027] In the figures: [0028] furnace body - - - 1, [0029] backing ring - - - 2, backing ring body - - - 21, trunnion - - - 22, [0030] vertical connecting rod mechanism - - - 3, third connecting rod seat - - - 31, vertical connecting rod - - - 32, fourth connecting rod seat - - - 33, second joint bearing - - - 34, second articulated shaft - - - 35, [0031] horizontal connecting rod mechanism - - - 4, first connecting rod seat - - - 41, horizontal connecting rod - - - 42, second connecting rod seat - - - 43, first joint bearing - - - 44, first articulated shaft - - - 45, mounting position reference mark - - - 401.

DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described below through specific embodiments. Those skilled in the art can understand other advantages and effects of the present invention easily through the disclosure of the description. The present invention can also be implemented or applied through additional different specific embodiments. All details in the description can be modified or changed based on different perspectives and applications without departing from the spirit of the present invention. It should be noted that the figures provided in the following embodiments only exemplarily explain the basic conception of the present invention, and if there is no conflict, the following embodiments and the features in the embodiments can be mutually combined.

[0033] As shown in FIG. 1 to FIG. 3, converter includes furnace body 1 and backing ring 2, the backing ring 2 includes backing ring body 21 and trunnion 22 set on the backing ring body 21, the self-adaptive hanging structure of a converter in the present invention includes vertical connecting rod mechanism 3 and horizontal connecting rod mechanism 4, the vertical connecting rod mechanism 3 is connected between the lower edge of the backing ring 21 and the lower half of the furnace body 1, the horizontal connecting rod mechanism 4 is connected between the upper edge of the backing ring 21 and the upper half of the furnace body 1, each group of horizontal connecting rod mechanism 4 is above a group of vertical connecting rod mechanism 3, the plane where the axis of the upper trunnion 22 of the backing ring 21 and the axis of the backing ring 21 are located is the first reference plane m, the symmetry center of each group of vertical connecting rod mechanism 3 itself is in the area radiated by the first included angle ?, and the two planes forming the first included angle ? coincide with the axis of the backing ring 21. Among the two planes, the first plane A and the first reference plane m form a 15? included angle, and the second plane B and the first reference plane m form a 50? included angle. The 15? included angle here includes both the clockwise and counterclockwise cases, and for the same group of vertical connecting rod mechanism 3, its first plane A and second plane B are on the same side of the first reference plane m.

[0034] Here, the center of symmetry of the vertical connecting rod mechanism 3 itself is essentially the center surface n. The horizontal connecting rod mechanism 4 is correspondingly above the vertical connecting rod mechanism 3, namely, when the furnace body 1 is in the vertical attitude, the horizontal connecting rod mechanism 4 is completely above the vertical connecting rod mechanism 3 or at a position slightly above the vertical connecting rod mechanism 3.

[0035] As shown in FIG. 1 to FIG. 3, there are 8 groups of connecting rod mechanisms in total, wherein there are 4 groups of horizontal connecting rod mechanisms 4 and 4 groups of vertical connecting rod mechanisms. In practice, the number of connecting rod mechanism is decided according to the actual converter tonnage, for example, 8 groups (4 groups of vertical connecting rod mechanisms and 4 groups of horizontal connecting rod mechanisms), or even more according to the demand.

[0036] In some embodiments as shown in FIG. 2, the center of symmetry of each group of connecting rod mechanisms 3 itself is coplanar with the axis of the backing ring body 21. In actual implementation, the center of symmetry of the vertical connecting rod mechanism 3 may also not be coplanar with the backing ring body 21, as long as it is in the radiation area of the first included angle.

[0037] In some embodiments, the horizontal connecting rod mechanism 4 has mounting position reference mark 401 which is in the radiation area of the second included angle, and the plane where the center of symmetry of the vertical connecting rod mechanism 3 itself and the axis of the backing ring body 21 are located is the second reference plane n. The mounting position reference mark 401 is in the radiation area of the second included angle, and both planes forming the second included angle are coincident with the axis of the backing ring body 21 and respectively form an included angle of ?10? and 10? with the second reference plane n. That is, in FIG. 2, the value B ranges from greater than or equal to ?10? to less than or equal to 10?. The positive and negative values of ? here respectively represent counterclockwise and clockwise.

[0038] In this way, it can ensure that the horizontal connecting rod mechanism 4 is above the vertical connecting rod mechanism 3 and does not excessively deviate from the vertical connecting rod mechanism 3, which helps to ensure that each pair of horizontal connecting rod mechanism 4 and vertical connecting rod mechanism 3 forms a reliable and adaptive two-point support structure.

[0039] In some embodiments, the horizontal connecting rod mechanism 4 includes a first connecting rod seat 41, a horizontal connecting rod 42 and a second connecting rod seat 43, the first connecting rod seat 41 is set on the upper half of the furnace body 1, the second connecting rod seat 43 is set on the upper edge of the backing ring body 21, the horizontal connecting rod 42 is respectively hinged to the first connecting rod seat 41 and the second connecting rod seat 43, and the mounting position reference mark 401 is on the horizontal connecting rod 42. For example, as shown in FIG. 2 and FIG. 5, the mounting position reference mark 401 can be a marking hole set on the horizontal connecting rod 42. In the actual implementation, the horizontal connecting rod mechanism 4 is different from the vertical connecting rod mechanism 3 in structure, the horizontal connecting rod mechanism 4 itself may not adopt symmetrical structure. Therefore, there may not be a symmetrical center surface, and the horizontal connecting rod 42 of the horizontal connecting rod mechanism 4 is set horizontally at the specific setting position which is not easy to determine. The mounting position reference mark 401 is set on the horizontal connecting rod 42 to help control the horizontal The installation position reference mark 401 is set on the horizontal rod 42, which is helpful to control the arrangement position of the horizontal connecting rod mechanism 4 to ensure that the horizontal connecting rod mechanism 4 is in the area where the alternating misalignment displacement is small.

[0040] In some embodiments, the mounting position reference mark 401 is at the center of the horizontal connecting rod 42.

[0041] In some embodiments, as shown in FIG. 1 and FIG. 4, the vertical connecting rod mechanism 3 includes a third connecting rod seat 31, a vertical connecting rod 32 and a fourth connecting rod seat 33, the third connecting rod seat 31 is set on the lower half of the furnace body 1 of the converter, the fourth connecting rod seat 33 is set on the lower edge of the backing ring body 2, and the third connecting rod seat 31 and the fourth connecting rod seat 33 are respectively hinged to the vertical connecting rod 32.

[0042] In some embodiments, the horizontal connecting rod 42 in each horizontal connecting rod mechanism 4 and the vertical connecting rod 32 in each vertical connecting rod mechanism 3 have the same shape and size, making the horizontal connecting rod 42 and the vertical connecting rod 32 interchangeable, reducing the variety of parts, helping to reduce the cost of equipment spare parts, and making it easier to assemble. In some embodiments, the first connecting rod seat 41 and the second connecting rod seat 43 are rotatably connected to the horizontal connecting rod 42 via the first joint bearing 44 and the first articulated shaft 45 respectively, and the third connecting rod seat 31 and the fourth connecting rod seat 33 are rotatably connected to the vertical connecting rod 32 via the second joint bearing 34 and the second articulated shaft 35 respectively, the first joint bearing 44 and the second joint bearing 34 have the same structure and size, and the first articulation shaft 45 and the second articulation shaft 35 have the same structure and size. During assembly, the joint bearings and articulated shafts of the horizontal connecting rod mechanism 4 and the vertical connecting rod mechanism 3 structure can also be interchanged, reducing the types of parts, helping to further reduce the cost of equipment spare parts, and further improving the ease of assembly.

[0043] In some embodiments, as shown in FIG. 1 to FIG. 2, each horizontal connecting rod mechanism is symmetrically divided on both sides of the first reference plane m and each vertical connecting rod mechanism is symmetrically divided on both sides of the second reference plane n.

[0044] The beneficial effects of the present invention are: [0045] (1) Finite element analysis and several practices verify that this hanging structure sets the vertical connecting rod mechanism 3 in a specific angle area (that is, the radiation area of the first included angle ?), and sets the horizontal connecting rod mechanism 4 above the vertical connecting rod mechanism 3, which not only makes the vertical connecting rod mechanism 3 become the main mechanism to restrain the horizontal connecting rod mechanism 4 in the support surface alternating misalignment displacement, but also makes both the vertical connecting rod mechanism 3 and the horizontal connecting rod mechanism 4 far away from the maximum position (?15 mm) of the alternating misalignment, and the horizontal connecting rod mechanism 4 is between the furnace body 1 and the backing ring 2, which is in the minimum range (1 mm?2 mm) of the alternating misalignment displacement. The horizontal the horizontal connecting rod mechanism 4 has a more solid installation base, better working conditions and longer working life to achieve the optimal arrangement of the entire suspension adaptive hanging structure of the converter. The main reason why patent ZL93117357.4 sets the horizontal connecting rod support mechanism at the position close to the lower part of the trunnion backing ring is to direct the force generated by the tilting to the bearing trunnion as far as possible, so that the backing ring can be kept in the stress-free state to the maximum extent, but it ignores that this position is the position where the whole backing ring produces maximum alternating misalignment due to the bending and twisting effect and the most unfavorable position for the horizontal connecting rod. In fact, the whole rigidity and strength of the backing ring of the converter and trunnion equipment is much greater than the horizontal connecting rod mechanism, relatively speaking, the rigidity and strength of the horizontal connecting rod mechanism placed here is very weak. Therefore, the best position for the horizontal connecting rod mechanism is between the furnace body of the converter equipment and the backing ring with the small alternating misalignment displacement.

[0046] (2) The pendulum 6 or static guide mechanism 7 in patent ZL93117357.4 and the guide seat used to limit the axial movement of the converter shell along the trunnion during tilting in patent ZL201210291941.6 are removed to simplify the horizontal support mechanism of the converter suspension, eliminating the problem of super static over constraint in the existing hanging structure, facilitating the self-adaptive working conditions of the converter suspension connecting rod mechanism and reducing the equipment maintenance workload.

[0047] (3) What's more, compared with the way of only setting the horizontal connecting rod mechanism under each trunnion to form the single-point support in patent ZL93117357.4, the adaptive hanging structure of the converter is more applicable to the working condition of large tonnage converter by using the paired horizontal connecting rod mechanism and vertical connecting rod mechanism to form the two-point support structure on the upper and lower sides of the backing ring.

[0048] (4) The invention is a simple, reliable suspension hanging system with perfect and optimal static design between the backing ring and the furnace shell. There is flexible and strong connection between the backing ring and the furnace shell that uniform load is distributed on each connecting rod which has self-adaptive capability to compensate for thermal deformation to cope with harsh environments with high mechanical and thermal loads.

[0049] (5) The main parts of the vertical connecting rod mechanism 3 and horizontal connecting rod mechanism 4 in the hanging structure such as vertical connecting rod 32, horizontal connecting rod 42, joint bearings 34, 44 and articulated shaft 35, 45, etc. are interchangeable, which greatly reduces the variety of spare parts, equipment maintenance costs and equipment maintenance time.

[0050] (6) Compared with the way of blocking seat mechanism, the connecting rod mechanism does not require adjustment. In the hanging structure of the present invention, both the horizontal connecting rod mechanism and the vertical connecting rod mechanism have the ability of adaptive action and are insensitive to the environment of lack of grease lubrication, and the tilting operation of the converter does not produce strange abnormal noise and has a longer working life, making the equipment maintenance-free for a long time.

[0051] The above descriptions are only examples of the invention, and are not used to limit the protection scope of the invention. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this invention shall be included in the protection scope of this invention.