Slab continuous casting machine crystallizer narrow edge assembly

Abstract

The utility model discloses a slab continuous casting machine crystallizer narrow edge assembly, the slab continuous casting machine crystallizer narrow edge assembly comprises a support plate, a copper plate and a fastener, the support plate and the copper plate are installed on a crystallizer water tank back plate, the copper plate is provided with a plurality of cooling water tanks and installation holes, and each cooling water tank is formed by sinking inwards from the copper plate. The mounting holes are located in the two sides of the cooling water tank, assembling holes are formed in the positions, corresponding to the mounting holes, of the supporting plate, and fasteners penetrate through the assembling holes and the mounting holes corresponding in position to connect the supporting plate with the copper plate. According to the slab continuous casting machine crystallizer narrow edge assembly, the installation hole and the assembly hole are formed in the copper plate, the fastening piece penetrates through the installation hole and the assembly hole to connect the supporting plate and the copper plate, the supporting plate and the copper plate are connected and fixed, the fastening piece avoids the position of a cooling water tank, stress is more dispersed, stress concentration is relieved, and the service life of the slab continuous casting machine is prolonged. The thermal stress is released, the strength is increased, the service life is longer, and the problem of fracture caused by insufficient strength at the joint in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel billet continuous casting, in particular to a narrow side assembly of a crystallizer of a slab continuous casting machine. Background Art

[0002] Slab continuous casting is a continuous steel casting technology with slab as the main product. The slab continuous casting machine crystallizer is the first solidification area of ​​continuous casting production, which allows the molten steel poured into it to cool quickly and initially solidify and form according to the required cross-section.

[0003] In the related art, the support plate and copper plate of the narrow side assembly of the crystallizer are fastened to the water tank by hollow bolts. The hollow bolts are required to perform thermocouple detection and the connection and fastening of the support plate and copper plate to achieve the function of sealing the end face of the water tank. The narrow side assembly of the crystallizer is subjected to a large impact force when the first and last billets, package change, and online width adjustment are performed. Under the action of the lever force, the stress on the upper end of the narrow side assembly increases, and there have been many cases of leakage and stop of pouring due to the breakage of the upper end connection of the narrow side.

[0004] In view of this, it is necessary to propose a narrow side assembly of a slab continuous casting machine crystallizer to solve the above-mentioned defects. Utility Model Content

[0005] The main purpose of the utility model is to provide a narrow side assembly of a crystallizer of a slab continuous casting machine, aiming to solve the problem that the existing support plate and the copper plate are easily broken by being fastened by hollow bolts, resulting in water leakage and stop of casting.

[0006] To achieve the above-mentioned purpose, the utility model provides a narrow side assembly of a crystallizer of a slab continuous casting machine, comprising a support plate and a copper plate and fasteners installed on the back plate of a water tank of the crystallizer, wherein the copper plate is provided with a plurality of cooling water grooves and mounting holes, each of the cooling water grooves being recessed inwardly from a side surface of the copper plate close to the support plate and not penetrating the lower surface of the copper plate, the mounting holes being located on both sides of the cooling water grooves, and assembly holes being provided on the support plate at positions corresponding to the mounting holes, and the fasteners pass through the assembly holes and the mounting holes at corresponding positions to fix the support plate and the copper plate to the back plate of the water tank.

[0007] Preferably, each of the cooling water grooves is opened along the longitudinal direction of the copper plate, and a plurality of the cooling water grooves are distributed along the transverse direction of the copper plate.

[0008] Preferably, the bottom surface of the cross section of the cooling water tank is an arc-shaped surface.

[0009] Preferably, the wide sides of the copper plate are gradually inclined toward the center thereof to form a material removal slope.

[0010] Preferably, a positioning hole is provided between two adjacent mounting holes and between two adjacent assembly holes, and a positioning pin passes through the positioning hole to connect and fix the support plate and the copper plate.

[0011] The vertical distances from the positioning hole on the support plate to two adjacent mounting holes are equal, and at the same time, the vertical distances from the positioning hole on the copper plate to two adjacent assembly holes are equal.

[0012] Preferably, the center distance between two adjacent mounting holes is 100 mm, and the distance between the center distance between the positioning hole and the mounting hole is 50 mm.

[0013] Preferably, the number of the assembly holes and the installation holes is an even number.

[0014] Preferably, the number of the assembly holes and the installation holes is 8.

[0015] Preferably, the fastener is a solid bolt.

[0016] Compared with the prior art, the narrow side assembly of the slab continuous casting machine crystallizer provided by the utility model has the following beneficial effects:

[0017] The narrow side assembly of the crystallizer of the slab continuous casting machine provided by the utility model is achieved by opening a mounting hole and an assembly hole on the copper plate, and passing the fasteners through the mounting hole and the assembly hole to connect the support plate and the copper plate, so as to achieve connection and fixation between the two. The fasteners avoid the position of the cooling water trough, so that the stress is more dispersed, the stress concentration is alleviated, the thermal stress is released, the strength is increased, and the service life is longer, which solves the problem of breakage due to insufficient strength of the connection in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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 described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 A cross-sectional view of a narrow side assembly of a slab continuous casting machine crystallizer provided by the utility model;

[0020] Figure 2 for Figure 1 The schematic diagram of the structure of the copper plate shown;

[0021] Figure 3 for Figure 2 The cross-sectional view along AA is shown;

[0022] Figure 4 for Figure 2 A cross-sectional view along CC is shown;

[0023] Figure 5 for Figure 1 A schematic diagram of the structure of the support plate shown;

[0024] Figure 6 for Figure 5 A cross-sectional view along BB is shown.

[0025] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0026] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0030] Please refer to Figure 1-Figure 6The utility model provides a narrow side assembly of a crystallizer of a slab continuous casting machine. The narrow side assembly of the crystallizer of the slab continuous casting machine comprises a support plate 1 and a copper plate 3 and a fastener 5 installed on the back plate 100 of the crystallizer water tank. The copper plate 3 is provided with a plurality of cooling water grooves 31 and mounting holes 33. Each cooling water groove 31 is formed by being recessed inward from a side surface of the copper plate 3 close to the support plate 1 and does not penetrate the lower surface of the copper plate 3. The mounting holes 33 are located on both sides of the cooling water grooves 31. The support plate 1 is provided with assembly holes 11 at positions corresponding to the mounting holes 33. The fastener 5 passes through the corresponding assembly holes 11 and the mounting holes 33 to connect the support plate 1 and the copper plate 3. By opening the mounting hole 33 and the assembly hole 11 on the copper plate 3, and passing the fastener 5 through the mounting hole 33 and the assembly hole 11 to fix the support plate 1 and the copper plate 3 on the water tank back plate 100, the connection and fixation of the two are achieved, and the fastener 5 avoids the position of the cooling water tank 31, so that the stress is more dispersed, the stress concentration is relieved, the thermal stress is released, and the strength is increased, so that the service life is longer, and the problem of the fastener 5 breaking due to insufficient strength of the connection in the prior art is solved. Moreover, in the prior art, some fasteners 5 are hollow bolts, which have low strength and weak thermal stress release ability, thus leading to easy breakage.

[0031] like Figures 2 to 4 As shown, each cooling water trough 31 is opened along the longitudinal direction of the copper plate 3, and a plurality of cooling water troughs 31 are distributed along the transverse direction of the copper plate 3. The cooling water flowing through the cooling water trough 31 is used to reduce the temperature of the copper plate 3, and of course, the temperature of the support plate 1 can also be reduced. The number of cooling water troughs 31 is set according to the width of the copper plate 3. The wider the copper plate 3, the more cooling water troughs 31 are opened under the preset spacing conditions.

[0032] It can be understood that in order to improve the fluidity of the cooling water flowing through the cooling water groove 31 , the bottom surface of the cross section of the cooling water groove 31 is an arc-shaped surface.

[0033] like Figure 4 As shown, further, the wide sides of the copper plate 3 are gradually inclined toward the center thereof to form a material removal slope. The material removal slope forms a transition connection with the middle plane, and the setting of the material removal slope reduces the thickness of the copper plate 3 and reduces the material consumption without affecting its strength.

[0034] like Figure 5 and Figure 6As shown, in addition, in another embodiment, a positioning hole 9 is further provided between two adjacent mounting holes 33 and between two adjacent assembly holes 11, and a positioning pin 10 passes through the positioning hole 9 to connect and fix the support plate 1 and the copper plate 3. Further, the vertical distances between the positioning hole 9 on the support plate 1 and the two adjacent mounting holes 33 are equal, and at the same time, the vertical distances between the positioning hole 9 on the copper plate 3 and the two adjacent assembly holes 11 are equal. The support plate 1 and the copper plate 3 are connected and fixed by the positioning pin 10, which further improves the connectivity of the support plate 1 and the copper plate 3 and strengthens the connection strength.

[0035] In detail, the center distance between two adjacent mounting holes 33 is 100 mm, and the center distance between the positioning hole 9 and the mounting hole 33 is 50 mm. The opening position between the two assembly holes 11 at the positioning pin deviates from the positioning pin by 10 mm (the center of the opening is 60 mm from the center of the bolt hole in the direction of the positioning pin), and the center line of the newly opened assembly hole 11 coincides with the hollow bolt hole in the same row.

[0036] Specifically, the number of the assembly holes 11 and the mounting holes 33 is an even number. The assembly holes 11 and the mounting holes 33 are symmetrically arranged on both sides of the support plate 1 and the copper plate 3 .

[0037] Preferably, in this embodiment, the number of the assembly holes 11 and the mounting holes 33 is 8. Each row has 8 bolt holes.

[0038] Specifically, the fastener 5 is a solid bolt, and the assembly hole 11 and the mounting hole 33 are bolt holes. The solid bolt has a stronger structural strength, which can effectively relieve stress concentration and increase service life. The use of solid bolts can reduce the tightening force of the bolts and adjust the tightening torque. The tightening torque of the newly added solid bolts is 200nm, which is reduced from the tightening torque of the original hollow bolts of 200nm to 120nm. When tightening the bolts, start from the middle, then to both sides, and tighten with three torques, the first 60nm, the second 90nm, and the last 120nm. Reduce the stress on the hollow bolts, which only play the role of thermocouple detection and water tank sealing.

[0039] The narrow side assembly of the crystallizer of the slab continuous casting machine provided by the utility model is achieved by opening a mounting hole 33 and an assembly hole 11 on the copper plate 3, and passing the fastener 5 through the mounting hole 33 and the assembly hole 11 to connect the support plate 1 and the copper plate 3, so as to achieve the connection and fixation between the two. The fastener 5 avoids the position of the cooling water tank 31, so that the stress is more dispersed, the stress concentration is alleviated, the thermal stress is released, the strength is increased, and the service life is longer, which solves the problem of breakage due to insufficient strength of the connection in the prior art.

[0040] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A narrow side assembly of a slab continuous casting machine crystallizer, characterized in that: It includes a support plate and a copper plate and fasteners installed on the back plate of the crystallizer water tank. The copper plate is provided with a plurality of cooling water grooves and mounting holes. Each cooling water groove is formed by being recessed inward from a side surface of the copper plate close to the support plate and does not penetrate the lower surface of the copper plate. The mounting holes are located on both sides of the cooling water grooves. Assembly holes are provided on the support plate at positions corresponding to the mounting holes. The fasteners pass through the corresponding assembly holes and the mounting holes to fix the support plate and the copper plate to the back plate of the water tank.

2. The narrow side assembly of the slab continuous casting machine crystallizer according to claim 1, characterized in that: Each of the cooling water grooves is opened along the longitudinal direction of the copper plate, and a plurality of the cooling water grooves are distributed along the transverse direction of the copper plate.

3. The narrow side assembly of the slab continuous casting machine crystallizer according to claim 2, characterized in that: The bottom surface of the cross section of the cooling water tank is an arc-shaped surface.

4. The narrow side assembly of the slab continuous casting machine crystallizer according to claim 1, characterized in that: The wide sides of the copper plate on both sides are gradually inclined toward the center thereof to form a material removal slope.

5. The narrow side assembly of the slab continuous casting machine crystallizer according to claim 1, characterized in that: A positioning hole is also provided between two adjacent mounting holes and between two adjacent assembly holes, and a positioning pin passes through the positioning hole to connect and fix the support plate and the copper plate; The vertical distances from the positioning hole on the support plate to two adjacent mounting holes are equal, and at the same time, the vertical distances from the positioning hole on the copper plate to two adjacent assembly holes are equal.

6. The narrow side assembly of the slab continuous casting machine crystallizer according to claim 5, characterized in that: The center distance between two adjacent mounting holes is 100 mm, and the distance between the center distance between the positioning hole and the mounting hole is 50 mm.

7. The narrow side assembly of the slab continuous casting machine crystallizer according to claim 1, characterized in that: The number of the assembly holes and the installation holes is an even number.

8. The narrow side assembly of the slab continuous casting machine mold according to claim 7, characterized in that: The number of the assembly holes and the installation holes is 8.

9. The narrow side assembly of the slab continuous casting machine crystallizer according to claim 1, characterized in that: The fastener is a solid bolt.

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