Steel ladle rotary table

Abstract

The utility model discloses a ladle turret, which comprises a bottom frame (1) connected with a rotary table (3) through a rotary support bearing (2), a pin wheel mechanism (4) is connected on the circumferential wall of the rotary table (3) and comprises an upper layer pin wheel ring (41) and a lower layer pin wheel ring (41), the inner sides of the pin wheel rings (41) are connected with mounting rings (42), and the mounting rings (42) are connected with the outer wall of the rotary table (3); a group of pin column holes (43) are uniformly distributed in the pin wheel ring (41), pin columns (44) are connected between the pin column holes (43) which correspond to each other up and down, a driving mechanism (5) is arranged on the outer side of the bottom frame (1), and the driving mechanism (5) is correspondingly meshed with the pin columns (44); the rotating table (3) is further provided with steel ladle fixing mechanisms (6), the steel ladle fixing mechanisms (6) are arranged on the two sides of the rotating frame (31), and the steel ladle fixing mechanisms (6) are movably connected with a steel ladle (7) to be rotated and replaced. The utility model has the advantages that the maintenance difficulty is reduced, the replacement workload is reduced, the maintenance and replacement cost is saved, and time and labor are saved.

Description

A ladle rotary table Technical Field

[0001] This utility model belongs to the technical field of steelmaking equipment, and in particular relates to a ladle rotary table. Background Technology

[0002] The ladle turret is the most commonly used equipment in modern continuous casting for transporting and supporting ladles for pouring. It is usually set between the columns of the molten steel receiving span and the pouring span. The ladle is placed on the turret by a crane on one side of the molten steel receiving span. The turret rotates so that the ladle stops above the tundish and is supplied with molten steel.

[0003] Most ladle rotation uses gear drive, and the gears are located at the bottom of the rotary table. When maintenance or replacement is needed later, the rotary table needs to be lifted, which is cumbersome, labor-intensive, time-consuming, and costly to replace. Summary of the Invention

[0004] The purpose of this utility model is to solve the problems of existing ladle turrets having a single transmission method, high maintenance difficulty, low replacement efficiency and high cost. It provides a ladle turret that can effectively reduce maintenance difficulty, reduce replacement workload, save maintenance and replacement costs, and make subsequent maintenance more time-saving and labor-saving.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A ladle rotary table includes a rotary support bearing mounted on a base frame, a rotary table connected to the rotary support bearing, a rotary frame mounted on the rotary table, and a pin wheel mechanism connected to the circumferential wall of the rotary table. The pin wheel mechanism is a split structure, which includes upper and lower pin wheel rings. An integral mounting ring is connected to the inner side of the pin wheel ring. The mounting ring fits against the outer wall of the rotary table and is fixed to the bottom outer wall of the rotary table by fasteners.

[0007] A set of pin holes are evenly distributed on the pin wheel ring, and pins are connected between the upper and lower corresponding pin holes. A drive mechanism is provided on the outside of the base frame. The drive mechanism meshes with the corresponding pins to drive the pin wheel mechanism and the rotary table to rotate.

[0008] The rotating platform is also equipped with a pair of ladle fixing mechanisms, which are located on both sides of the rotating frame and are movably connected to the ladle to be rotated and replaced.

[0009] Furthermore, the rotating platform is horizontally mounted on the base frame, and the rotating frame is an integrally formed portal structure, which is vertically fixed on the rotating platform along the radial direction of the rotating platform.

[0010] Furthermore, the pin ring is a complete circular structure assembled from a group of arc-shaped ring parts, including an upper pin ring and a lower pin ring that are parallel to each other and are on the same axis. Each pin is vertically fixed between the upper pin ring and the lower pin ring.

[0011] Furthermore, the drive mechanism includes a rotary motor, a reducer, and a drive gear connected in sequence. The drive gear is horizontally positioned between the upper and lower pin rings, and the drive gear meshes with the corresponding pin.

[0012] Furthermore, the ladle fixing mechanism includes a rotating arm, a first connecting rod, a support arm, and a second connecting rod that cooperate with each other. The inner side of the rotating arm is rotatably connected to the top of the rotating frame, and the outer side is hinged to the upper ends of a pair of first connecting rods. The lower ends of the first connecting rods are then hinged to the support arm and the second connecting rod, respectively. The support arm extends outward from the rotating platform, and the second connecting rod is hinged inward toward the rotating platform and connected to the bottom of the rotating frame. The middle part of the rotating arm is also connected to the rotating platform through a hydraulic cylinder, and both ends of the hydraulic cylinder are rotatably connected.

[0013] Furthermore, the slewing arm, the first link, the second link, and the rotating frame form a quadrilateral linkage mechanism. A pair of support arms are provided on each side of the rotating frame, and the two support arms are parallel to each other with the steel ladle sandwiched between the two support arms.

[0014] Furthermore, two pads are fixed on the upper surface of the support arm, a stop block is provided at the outer end of the support arm, and placement blocks are connected to both sides of the ladle. When the ladle is sandwiched between the two support arms, the placement block is placed on the pad and one side of it is held in place by the stop block.

[0015] Furthermore, the width of the second link gradually increases outward from the side closer to the rotating frame, and a reinforcing rib is provided on its outer side to enhance the rigidity of the link.

[0016] Furthermore, the two rotating arms on both sides of the rotating frame are staggered.

[0017] Furthermore, a set of protruding mounting platforms are evenly distributed on the outer side of the base frame, and a mounting bracket is fixed on each mounting platform, with the drive mechanism located inside the mounting bracket.

[0018] Compared with the prior art, the advantages of the technical solution of this utility model are as follows:

[0019] (1) This utility model changes the transmission method and adopts a more economical pin gear transmission, and installs it on the outer wall of the rotary table instead of the bottom. In this way, when performing maintenance and replacement, there is no need to lift the rotary table, which reduces the difficulty and workload of maintenance and replacement.

[0020] (2) This utility model adopts a two-layer pin ring and segmented design, which can be replaced separately, thereby reducing replacement costs, saving replacement time, and improving replacement efficiency. Attached Figure Description

[0021] Figure 1 is an overall structural diagram of the ladle rotary table of this utility model;

[0022] Figure 2 is a schematic diagram of the cooperation between the pin wheel mechanism and the drive mechanism of this utility model;

[0023] Figure 3 is a plan view of the pin mechanism of this utility model;

[0024] Figure 4 is a schematic diagram of the meshing of the drive gear and the pin of this utility model. Detailed Implementation

[0025] Example

[0026] To make this utility model clearer, the following description, in conjunction with the accompanying drawings, further illustrates a ladle rotary table according to this utility model. The specific embodiments described herein are for illustrative purposes only and are not intended to limit this utility model.

[0027] Referring to Figures 1 and 2, a ladle slewing table includes a slewing support bearing 2 mounted on a base frame 1, and a rotating table 3 connected to the slewing support bearing 2. Its characteristic is that:

[0028] The rotating table 3 is provided with a rotating frame 31, which is an integrally formed portal structure and is vertically fixed on the rotating table 3 along the radial direction of the rotating table 3.

[0029] The circumferential wall of the rotary table 3 is connected to a mutually cooperating pin mechanism 4. The pin mechanism 4 is a split structure, which includes two parallel upper pin rings 41a and lower pin rings 41b. The inner side of the pin ring 41 is connected to an integral mounting ring 42. The mounting ring 42 fits against the outer wall of the rotary table 3 and is fixed to the bottom outer wall of the rotary table 3 by fasteners.

[0030] Referring to Figures 2, 3 and 4, a set of pin holes 43 are evenly distributed on the pin ring 41, and vertical pins 44 are connected between the upper and lower corresponding pin holes 43. A drive mechanism 5 is provided on the outer side of the base frame 1. The drive mechanism 5 includes a rotary motor 51, a reducer 52 and a drive gear 53 connected in sequence. The drive gear 53 is horizontally arranged between the upper pin ring 41a and the lower pin ring 41b, and the drive gear 53 meshes with the pins 44.

[0031] Referring to Figure 1, the rotary table 3 is also provided with a pair of ladle fixing mechanisms 6. The ladle fixing mechanisms 6 are located on both sides of the rotary frame 31. They include a rotating arm 61, a first connecting rod 62, a support arm 63, and a second connecting rod 64 that cooperate with each other. The inner side of the rotating arm 61 is rotatably connected to the top of the rotary frame 31, and the outer side is hinged to the upper end of the pair of first connecting rods 62. The lower end of the first connecting rod 62 is then hinged to the support arm 63 and the second connecting rod 64 respectively. The support arm 63 extends outward from the rotary table 3, and the second connecting rod 64 is hinged to the bottom of the rotary frame 31 towards the rotary table 3. The middle part of the rotating arm 61 is also connected to the rotary table 3 through a hydraulic cylinder 65. Both ends of the hydraulic cylinder 65 are rotatably connected.

[0032] The rotating arm 61, the first link 62, the second link 64 and the rotating frame 31 form a quadrilateral linkage mechanism. A pair of support arms 63 are provided on both sides of the rotating frame 31. The two support arms 63 are parallel to each other and the steel ladle 7 is sandwiched between the two support arms 63.

[0033] Two pads 66 are fixed on the upper surface of the support arm 63. A stop block 67 is provided at the outer end of the support arm 63. Placement blocks 71 are connected to both sides of the ladle 7. When the ladle 7 is sandwiched between the two support arms 63, the placement block 71 is placed on the pad 66 and one side of it is supported by the stop block 67. The pad 66 can effectively reduce the wear of the support arm 63, and the stop block 67 can play a blocking and positioning role.

[0034] In this embodiment, because the second connecting rod 64 is very long, a reinforcing rib 68 is used to enhance its rigidity. Meanwhile, the two rotating arms 61 are staggered, with the staggered arrangement being front-to-back, to ensure the structure of the two supporting steel ladles can be installed; the design is meticulous.

[0035] In this embodiment, a rotating platform 3 is mounted on the top of the base frame 1 via a slewing support bearing 2. The rotating platform 3 includes an integral upper rotating frame 31. Thus, the rotating platform 3 and the rotating frame 31 can rotate on the top of the base frame 1, satisfying the slewing design.

[0036] In this embodiment, the pin mechanism 4 is a split design, which can be repaired and replaced individually, reducing costs and production difficulty. The pin mechanism 4 is fixedly installed on the circumferential wall of the rotary table 3, changing the installation position and facilitating subsequent maintenance and replacement.

[0037] When the hydraulic cylinder 65 extends, the rotary arm 61 deflects upward at its connection point with the rotary table 3, and the top of the support arm 63 also rises. However, due to the pull of the second connecting rod 64 at its bottom, the support arm 63 deflects clockwise, facilitating the pouring of molten steel from the ladle 7. The rotating connection ensures that the support arm 63 can move upward and deflect, facilitating the pouring of molten steel from the ladle 7. In this embodiment, the ladle 7 is provided with placement blocks 71 on both sides, which are placed on the support arm 63. After casting is completed, the ladle is rotated to replace it.

[0038] In this embodiment, two pin rings 41 are respectively connected to the rotary table 3, and the mounting ring 42 is attached to the outer wall of the rotary table 3 and installed on the bottom outer wall of the rotary table 3 by fasteners. The pin 44 passes through the pin hole 43, and both ends of the pin 44 are provided with through-type fixing rods, and the opening of the pin hole is provided with a washer.

[0039] When in use, the rotary motor 51 starts, and the speed reducer 52 drives the drive gear 53 to rotate. The drive gear 53 meshes with the pin mechanism 4, thereby driving the rotary table 3 to rotate and achieve rotation.

[0040] This invention utilizes a pin-gear drive, which offers advantages such as simple structure, easy processing, low cost, and convenient disassembly and repair, resulting in significant economic benefits. Pin-gear drives are suitable for low-speed, heavy-load mechanical transmissions and harsh working environments such as dusty conditions and poor lubrication.

[0041] In addition to the embodiments described above, this utility model may have other implementations. All technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by this utility model.

Claims

1. A ladle slewing table, comprising a slewing support bearing (2) mounted on a base frame (1), wherein a rotary table (3) is connected to the slewing support bearing (2), characterized in that: A rotating frame (31) is provided on the rotating platform (3). A pin mechanism (4) is connected to the circumferential wall of the rotating platform (3). The pin mechanism (4) is a split structure, which includes upper and lower pin rings (41). An integral mounting ring (42) is connected to the inner side of the pin ring (41). The mounting ring (42) is in contact with the outer wall of the rotating platform (3) and is fixed to the bottom outer wall of the rotating platform (3) by fasteners. A set of pin holes (43) are evenly distributed on the pin ring (41). Pins (44) are connected between the upper and lower corresponding pin holes (43). A drive mechanism (5) is provided on the outer side of the base frame (1). The drive mechanism (5) is meshed with the pin (44). A pair of ladle fixing mechanisms (6) are also provided on the rotating platform (3). The ladle fixing mechanisms (6) are located on both sides of the rotating frame (31) and are movably connected to the ladle (7) to be rotated and replaced.

2. The ladle rotary table according to claim 1, characterized in that: The rotating platform (3) is horizontally mounted on the base frame (1), and the rotating frame (31) is an integrally formed portal structure, which is vertically fixed on the rotating platform (3) along the radial direction of the rotating platform (3).

3. The ladle rotary table according to claim 1 or 2, characterized in that: The pin ring (41) is a complete circular structure assembled from a group of arc-shaped ring parts. It includes an upper pin ring (41a) and a lower pin ring (41b) that are parallel to each other and are on the same axis. Each pin (44) is vertically fixed between the upper pin ring (41a) and the lower pin ring (41b).

4. The ladle rotary table according to claim 3, characterized in that: The drive mechanism (5) includes a rotary motor (51), a reducer (52) and a drive gear (53) connected in sequence. The drive gear (53) is horizontally arranged between the upper pin ring (41a) and the lower pin ring (41b), and the drive gear (53) meshes with the pin (44).

5. The ladle rotary table according to claim 1 or 2, characterized in that: The ladle fixing mechanism (6) includes a rotating arm (61), a first connecting rod (62), a support arm (63), and a second connecting rod (64) that cooperate with each other. The inner side of the rotating arm (61) is rotatably connected to the top of the rotating frame (31), and the outer side is hinged to the upper end of a pair of first connecting rods (62). The lower end of the first connecting rod (62) is then hinged to the support arm (63) and the second connecting rod (64) respectively. The support arm (63) extends outward from the rotating table (3), and the second connecting rod (64) faces the rotating table (3) inward and is hinged to the bottom of the rotating frame (31). The middle part of the rotating arm (61) is also connected to the rotating table (3) through a hydraulic cylinder (65). Both ends of the hydraulic cylinder (65) are rotatably connected.

6. The ladle rotary table according to claim 5, characterized in that: The rotating arm (61), the first link (62), the second link (64) and the rotating frame (31) form a quadrilateral linkage mechanism. A pair of support arms (63) are provided on both sides of the rotating frame (31). The two support arms (63) are parallel to each other and the steel ladle (7) is sandwiched between the two support arms (63).

7. The ladle rotary table according to claim 5, characterized in that: Two pads (66) are fixed on the upper surface of the support arm (63). A stop block (67) is provided at the outer end of the support arm (63). Placement blocks (71) are connected to both sides of the ladle (7). When the ladle (7) is sandwiched between the two support arms (63), the placement block (71) is placed on the pad (66) and one side of it is held by the stop block (67).

8. The ladle rotary table according to claim 5, characterized in that: The width of the second link (64) gradually increases from the side closest to the rotating frame (31) outwards, and a reinforcing rib (68) is provided on its outer side.

9. The ladle rotary table according to claim 5, characterized in that: The two rotating arms (61) on both sides of the rotating frame (31) are staggered.

10. The ladle rotary table according to claim 1 or 2, characterized in that: A set of protruding mounting platforms (8) are evenly distributed on the outer side of the base frame (1). Each mounting platform (8) is fixed with a mounting bracket (9), and the drive mechanism (5) is located inside the mounting bracket (9).

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