A quick-release structure and quick-release method for a dummy bar transition chain link

Abstract

The present invention belongs to the technical field of metallurgical continuous casting equipment, and specifically relates to a quick-disassembly structure and a quick-disassembly method for a dummy rod transition chain link. The present invention is composed of a front link, a rear link, a pin shaft, a positioning key and a fixing bolt. The front link is rotatably connected to the rear link through the pin shaft; the positioning key is arranged on one side of the pin shaft, and the fixing bolt fixes the positioning key to the rear link. The present invention can quickly and conveniently disassemble and assemble the dummy rod transition chain link from the dummy rod body, and the cost is low, which provides conditions for accelerating the production rhythm of square billets and round billets.

Description

Technical Field

[0001] The invention belongs to the technical field of metallurgical continuous casting equipment, and in particular relates to a dummy bar transition chain link quick-disassembly structure and a quick-disassembly method. Background Art

[0002] In the production process of billet and round billet continuous casting machines, due to the accelerated production rhythm and the production of products with different cross-sections, the dummy bar must be quickly replaced to meet the production requirements. In the prior art, the dummy bar is often replaced as a whole, but the replacement of the dummy bar as a whole not only increases the production cost to a certain extent, but also takes a long time to replace and has low efficiency. Therefore, a device that can quickly, efficiently and cost-effectively replace the technical solution of replacing the dummy bar as a whole in the prior art is needed, which can quickly and conveniently disassemble and assemble the dummy bar transition chain link and the dummy bar body, providing conditions for accelerating the production rhythm of square billets and round billets. Summary of the invention

[0003] The invention provides a dummy bar transition chain link quick-disassembly structure and quick-disassembly method, aiming to provide a structure and quick-disassembly method capable of quickly, efficiently, low-costly and conveniently disassembling a dummy bar transition chain link from a dummy bar body.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] A dummy rod transition chain link quick-release structure comprises a front link, a rear link, a pin shaft, a positioning key and a fixing bolt; the front link is rotatably connected to the rear link via the pin shaft; the positioning key is arranged on one side of the pin shaft, and the fixing bolt fixes the positioning key to the rear link.

[0006] The front link is a plate-like structure with an L-shaped first shoulder on the upper part of one end. A through hole is opened on the side wall of the front link close to the first shoulder, and two through holes are opened on the side wall of the front link away from the first shoulder; the inner diameters of the through holes are the same.

[0007] The through hole is opened on the axis line of the front link length direction.

[0008] The upper end of the front link away from the L-shaped first shoulder is provided with a chamfer.

[0009] The rear link is an integrated H-shaped structure consisting of a first U-shaped body and a second U-shaped body; wherein the upper ends of both ends of the first U-shaped body are provided with an L-shaped second shoulder and a through hole is respectively opened on the two side walls, and the centers of the two through holes are located on the axis line in the length direction; the two side walls of the second U-shaped body are respectively provided with two through holes located on the axis line in the length direction, and the through holes on the two side walls correspond to each other on the left and right; the inner side wall of the second U-shaped body is provided with a strip groove with an open upper part perpendicular to the axis, and the bottom of the strip groove is connected with the through hole on the outside of the second U-shaped body; two bolt holes are symmetrically arranged next to the outer through hole on one side wall of the second U-shaped body, and the centers of the bolt holes are located on the axis line in the length direction.

[0010] The upper parts of both ends of the second U-shaped body are provided with chamfers.

[0011] The pin shaft is cylindrical; an annular oil guide groove is arranged in the middle of the pin shaft; a third shoulder is opened on the side wall at one end of the pin shaft, and two parallel protrusions are arranged on the end surface of the other end of the pin shaft, and the axial side surface of the protrusion is parallel to the axial surface of the third shoulder on the side wall at one end of the pin shaft; the positioning key is arranged between the two parallel protrusions.

[0012] A matching disassembly tool is also included.

[0013] The disassembly tool comprises a handle and a convex tooth; the handle is a strip plate structure; the convex tooth is a columnar body with one opposite side being an arc and the other opposite side being a parallel plane; the convex tooth is vertically arranged on the end face of one end of the handle.

[0014] A quick-disassembly method for a dummy bar transition link quick-disassembly structure comprises the following steps:

[0015] Step 1: Remove the fixing bolt from the bolt hole of the rear link;

[0016] Step 2: Place the protruding teeth of the removal tool between the two parallel protrusions of the pin;

[0017] Step 3: Rotate the handle of the disassembly tool clockwise to rotate the pin 90°, so that the two parallel protrusions of the pin coincide with the vertical axis of the strip groove of the rear link;

[0018] Step 4: Remove the pin and the front link from the rear link.

[0019] Beneficial effects:

[0020] The invention is composed of a front link, a rear link, a pin, a positioning key and a fixing bolt. The front link is rotatably connected to the rear link through the pin; the positioning key is arranged on one side of the pin, and the positioning key and the pin are fixed by a fixing bolt. The invention can quickly and conveniently disassemble and assemble the transition link of the dummy bar and the dummy bar body, and the cost is low, which provides conditions for accelerating the production rhythm of square billets and round billets.

[0021] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the working state of the front link and the rear link of the present invention;

[0024] Figure 2 It is a schematic diagram of the disassembled state of the front link and the rear link of the present invention;

[0025] Figure 3 It is a schematic diagram of the front link structure of the present invention;

[0026] Figure 4 It is a schematic diagram of the rear link structure of the present invention;

[0027] Figure 5 It is a schematic diagram of the pin structure of the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of the disassembly tool of the present invention;

[0029] Figure 7 is a side view of the present invention;

[0030] Figure 8 is a top view of the present invention;

[0031] Fig. 9 yes Figure 7 AA section view;

[0032] Fig.10 yes Fig. 9 BB cross-section view.

[0033] In the figure: 1-front link; 2-rear link; 3-pin shaft; 4-locating key; 5-fixing bolt; 6-disassembly tool; 7-first shoulder; 8-second shoulder; 9-annular oil guide groove; 10-strip groove; 11-protrusion; 12-third shoulder; 13-handle; 14-convex tooth. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Embodiment 1:

[0036] Reference Figure 1-10 A quick-release structure of a dummy rod transition chain link comprises a front link 1, a rear link 2, a pin shaft 3, a positioning key 4 and a fixing bolt 5; the front link 1 is rotatably connected to the rear link 2 through the pin shaft 3; the positioning key 4 is arranged on one side of the pin shaft 3, and the fixing bolt 5 fixes the positioning key 4 to the rear link 2.

[0037] In actual use, the front link 1 and the rear link 2 are rotatably connected front and back through the pin shaft 3, and the positioning key 4 is fixed to the rear link 2 through the fixing bolt 5, so that the pin shaft 3 and the rear link 2 are fixed, thereby achieving the positioning function of the pin shaft 3 during use.

[0038] The invention can quickly and conveniently disassemble and assemble the dummy bar transition chain link and the dummy bar body at a low cost, thus providing conditions for accelerating the production rhythm of square billets and round billets.

[0039] Embodiment 2:

[0040] Reference Figure 1 , Figure 2 , Figure 7-9 , a quick-release structure of a dummy rod transition chain link, which is different from the first embodiment in that: the front link 1 is a plate-like structure with an L-shaped first shoulder 7 on the upper part of one end, and a through hole is opened on the side wall of the front link 1 close to the first shoulder 7, and two through holes are opened on the side wall of the front link 1 away from the first shoulder; the inner diameters of the through holes are the same.

[0041] Furthermore, the through hole is opened on the axial center line of the front link 1 in the length direction.

[0042] In actual use, the first through hole on the front link 1 is connected to its front link through a pin, and the second through hole cooperates with the L-shaped first shoulder 7 of its front link through the mounting pin to prevent the entire chain from rotating in the opposite direction.

[0043] Embodiment three:

[0044] Reference Figure 1 , Figure 2 , Figure 7-9 , a dummy rod transition link quick-release structure, which is different from the second embodiment in that: the upper end of the front link 1 away from the L-shaped first shoulder 7 is provided with a chamfer.

[0045] In actual use, the front link 1 adopts this technical solution, so that when the front link 1 rotates upward, it will not interact with the pin shaft 3.

[0046] Embodiment 4:

[0047] Reference Figure 1 , Figure 2 , Figure 4 , Figure 7-10 , a dummy rod transition link quick-release structure, which is different from the embodiment 1 in that: the rear link 2 is an integrated H-shaped structure composed of a first U-shaped body and a second U-shaped body; wherein the upper part of both ends of the first U-shaped body is provided with an L-shaped second shoulder 8 and a through hole is respectively opened on the two side walls, and the centers of the two through holes are located on the axis line in the length direction; the two side walls of the second U-shaped body are respectively provided with two through holes located on the axis line in the length direction, and the through holes on the two side walls correspond to each other on the left and right; the inner side wall of the second U-shaped body is provided with a strip groove 10 with an upper opening perpendicular to the axis, and the bottom of the strip groove 10 is connected with the through hole on the outer side of the second U-shaped body; two bolt holes are symmetrically arranged next to the outer through hole on one side wall of the second U-shaped body, and the centers of the bolt holes are located on the axis line in the length direction.

[0048] In actual use, both ends of the first U-shaped body of the rear link 2 are provided with an L-shaped second shoulder 8 on the upper part and a through hole is opened on both side walls to facilitate the connection of the pin shaft with the front link 1; two through holes are respectively provided on the two side walls of the second U-shaped body, and the through holes on the two side walls correspond to each other on the left and right to facilitate the connection of the pin shaft 3 with its rear link 2; an upwardly open strip groove 10 is opened on the inner side wall of the second U-shaped body, and the strip groove 10 matches the rotated pin shaft 3 to facilitate the removal of the pin shaft 3.

[0049] Embodiment five:

[0050] Reference Figure 1 , Figure 2 , Figure 4 , Figure 7-10 , a dummy rod transition link quick-release structure, which is different from the fifth embodiment in that: the upper parts of both end heads of the second U-shaped body are both provided with chamfers.

[0051] In actual use, the chamfered setting ensures that the front link 1 will not interfere with the pin 3 when rotating upward.

[0052] Embodiment six:

[0053] according to Figure 1 , Figure 2 , Figure 5 , Figure 8-10 , a dummy rod transition chain link quick-release structure, which is different from the embodiment 1 in that: the pin shaft 3 is cylindrical; an annular oil guide groove 9 is provided in the middle of the pin shaft 3; a third shoulder 12 is opened on the side wall at one end of the pin shaft 3, and two parallel protrusions 11 are provided on the end surface of the other end of the pin shaft 3, and the axial side surface of the protrusion 11 is parallel to the axial surface of the third shoulder 12 opened on the side wall at one end of the pin shaft 3; the positioning key 4 is arranged between the two parallel protrusions 11.

[0054] In actual use, an annular oil guide groove is provided in the middle of the pin shaft 3, so that the lubricating oil injected from the front link 1 can lubricate the pin shaft 3 through the oil guide groove 9, ensuring that the front link 1 and the rear link 2 can rotate flexibly around the pin shaft 3, effectively extending the service life of the pin shaft 3. At the same time, the two ends of the pin shaft 3 are respectively processed. One end of the pin shaft 3 is grooved on the side wall, and two parallel protrusions 11 are provided on the end surface of the other end of the pin shaft 3. The axial side surface of the protrusion 11 is parallel to the axial surface of the third shoulder 12 on the side wall of one end of the pin shaft 3, similar to a wedge shape. The shape of the strip groove 10 opened on the side wall shaft hole on both sides of the pin shaft 3 and the rear link 2 is matched, which is convenient for the pin shaft 3 to be taken out and inserted. After the pin shaft 3 rotates 90°, it is ensured that the front link 1 and the rear link 2 are connected reliably. At the same time, a positioning key 4 is provided between the two parallel protrusions 11 at one end of the pin shaft 3, and the positioning key 4 prevents the pin shaft 3 from rotating during use, ensuring the safe use of the dummy bar. The positioning key 4 is embedded in two parallel protrusions 11 at the end of the pin shaft 3 and connected to the rear link 2 through the fixing bolt 5, so as to achieve the positioning function of the pin shaft 3 during use.

[0055] Embodiment seven:

[0056] according to Figure 2 ,and Figure 6 The quick-disassembly structure of the dummy bar transition chain link shown is different from the first embodiment in that it also includes a disassembly tool 6 for use.

[0057] Next, the disassembly tool 6 includes a handle 13 and a convex tooth 14; the handle 13 is a strip-shaped plate structure; the convex tooth 14 is a columnar body with one opposite side being an arc and the other opposite side being a parallel plane; the convex tooth 14 is vertically arranged on the end face of one end of the handle 13.

[0058] In actual use, the present invention is equipped with a special disassembly tool 6 to facilitate the rotational disassembly of the pin shaft 3. If during the disassembly process, the shaft 3 and the front link 1 and the rear link 2 are blocked, or the protruding teeth 14 of the disassembly tool 6 cannot be properly inserted into the pin shaft 3, the pin shaft 3 can be driven out through the through hole on the other side wall of the rear link 2, that is, the through hole on the side opposite to the side where the positioning key 4 is located, by using an auxiliary tool.

[0059] Embodiment eight:

[0060] A quick-disassembly method for a dummy bar transition link quick-disassembly structure comprises the following steps:

[0061] Step 1: Remove the fixing bolt 5 from the bolt hole of the rear link 2;

[0062] Step 2: Place the protruding teeth 14 of the disassembly tool 6 between the two parallel protrusions 11 of the pin 3;

[0063] Step 3: Rotate the handle 13 of the disassembly tool 6 clockwise to rotate the pin shaft 3 90°, so that the two parallel protrusions 11 of the pin shaft 3 coincide with the vertical axis of the strip groove 10 of the rear link 2;

[0064] Step 4: Remove the pin 3 and the front link 1 from the rear link 2.

[0065] In actual use, at the position where the transition link of the dummy bar and the dummy bar need to be replaced, after the pin shaft 3 is rotated into place by this method, the pin shaft 3 and the front link 1 can be taken out from the rear link 2 together, and it can also be taken out with the help of the existing technology tools in the operation workshop, which is more convenient and quick. If during the disassembly process, the shaft 3 and the front link 1 and the rear link 2 are blocked, or the convex teeth 14 of the disassembly tool 6 cannot be normally inserted into the pin shaft 3, the pin shaft 3 can be driven out through the through hole on the side wall of the other side of the rear link 2, that is, the through hole on the side opposite to the side where the positioning key 4 is located, by an auxiliary tool.

[0066] The invention uses four steps to quickly and conveniently disassemble and assemble the dummy bar transition chain link and the dummy bar body at a low cost, thereby providing conditions for accelerating the production rhythm of square billets and round billets.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0068] In the absence of conflicts, technicians in this field can combine the relevant technical features in the above examples according to actual conditions to achieve corresponding technical effects. The specific combinations are not described here one by one.

[0069] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) 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.

[0070] In addition, the descriptions of "first", "second", etc. in the present invention are only 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" or "second" may explicitly or implicitly include at least one of the features.

[0071] The above are only preferred embodiments of the present invention. The present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features disclosed herein. Any simple modification, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A dummy bar transition link quick-release structure, characterized in that: The front link (1) comprises a front link (1), a rear link (2), a pin shaft (3), a positioning key (4) and a fixing bolt (5); the front link (1) is rotatably connected to the rear link (2) via the pin shaft (3); the positioning key (4) is arranged on one side of the pin shaft (3), and the fixing bolt (5) fixes the positioning key (4) to the rear link (2); The front link (1) is a plate-like structure with an L-shaped first shoulder (7) at the upper part of one end, a through hole is formed on the side wall of the front link (1) close to the first shoulder (7), and two through holes are formed on the side wall of the front link (1) away from the first shoulder (7); the inner diameters of the through holes are the same; The rear link (2) is an integrated H-shaped structure consisting of a first U-shaped body and a second U-shaped body; wherein the first U-shaped body is provided with an L-shaped second shoulder (8) on the upper part of both ends of the first U-shaped body and a through hole is respectively opened on the two side walls, and the centers of the two through holes are located on the axis line in the length direction; the two side walls of the second U-shaped body are respectively provided with two through holes located on the axis line in the length direction, and the through holes on the two side walls correspond to each other on the left and right; the inner side wall of the second U-shaped body is provided with a strip groove (10) with an upper opening perpendicular to the axis, and the bottom of the strip groove (10) is connected with the through hole on the outer side of the second U-shaped body; two bolt holes are symmetrically arranged next to the outer through hole on one side wall of the second U-shaped body, and the centers of the bolt holes are located on the axis line in the length direction; The pin shaft (3) is cylindrical; an annular oil guide groove (9) is provided in the middle of the pin shaft (3); a third shoulder (12) is provided on the side wall of one end of the pin shaft (3); two parallel protrusions (11) are provided on the end surface of the other end of the pin shaft (3); the axial side surface of the protrusion (11) is parallel to the axial surface of the third shoulder (12) on the side wall of one end of the pin shaft (3); and the positioning key (4) is provided between the two parallel protrusions (11).

2. A dummy bar transition link quick-release structure as claimed in claim 1, characterized in that: The through hole is opened on the axis line of the length direction of the front link (1).

3. A dummy bar transition link quick-release structure according to claim 1, characterized in that: The upper end of the front link (1) away from the L-shaped first shoulder (7) is provided with a chamfer.

4. A dummy bar transition link quick-release structure as claimed in claim 1, characterized in that: The upper parts of both ends of the second U-shaped body are provided with chamfers.

5. A dummy bar transition link quick-release structure as claimed in claim 1, characterized in that: Also included is a matching disassembly tool (6).

6. A dummy bar transition link quick-release structure as claimed in claim 5, characterized in that: The disassembly tool (6) comprises a handle (13) and a convex tooth (14); the handle (13) is a strip-shaped plate-like structure; the convex tooth (14) is a columnar body with one opposite side being an arc and the other opposite side being a parallel plane; the convex tooth (14) is vertically arranged on an end surface of one end of the handle (13).

7. A quick disassembly method for a quick disassembly structure of a dummy bar transition link according to claim 6, characterized in that: The steps include: Step 1: Remove the fixing bolt (5) from the bolt hole of the rear link (2); Step 2: Place the protruding teeth (14) of the disassembly tool (6) between the two parallel protrusions (11) of the pin (3); Step 3: Rotate the handle (13) of the disassembly tool (6) clockwise to rotate the pin (3) 90°, so that the two parallel protrusions (11) of the pin (3) coincide with the vertical axis of the strip groove (10) of the rear link (2); Step 4: Remove the pin (3) and the front link (1) from the rear link (2).

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