阅读说明：本技术 一种lf炉钢包加揭盖装置摆动齿支撑机构 (Swing tooth supporting mechanism of ladle covering and uncovering device of LF (ladle furnace) ) 是由 赵金龙 陈志勇 李红 吴恩旭 白云波 杨洪亮 李宏伟 刘学刚 孙国鑫 白陈超 刘 于 2019-11-13 设计创作，主要内容包括：一种LF炉钢包加揭盖装置摆动齿支撑机构,包括摆动齿、导向轮、导向轮支架、导向滑板,摆动齿吊梁,摆动齿吊梁安装在LF炉加揭盖装置的移动梁上,摆动齿铰接在摆动齿吊梁上,导向轮支架固定在LF炉加揭盖装置的固定梁上,导向轮、导向滑板均安装在导向轮支架上。当移动梁缩回前半段时,摆动齿尾部倾斜踏面先与导向轮接触,当移动梁继续缩回后半段,摆动齿尾部两组滑动导轮依次与导向滑板接触。本发明通过增大摆动齿在竖直状态下的力臂,极大地改善了摆动齿的受力状态,削减了摆动齿在竖直状态所受支持力的大小,解决了液压锁紧系统无法提供长时间锁紧的瓶颈,解决了摆动齿自动下摆的难题,使钢包加揭盖设备的运行更加平稳,可靠。(The utility model provides a LF stove ladle adds takes off lid device swing tooth supporting mechanism, includes swing tooth, leading wheel support, direction slide, and swing tooth hanging beam, swing tooth hanging beam install on LF stove adds the walking beam who takes off lid device, and the swing tooth articulates on swing tooth hanging beam, and the leading wheel support is fixed on LF stove adds the fixed beam who takes off lid device, and leading wheel, direction slide are all installed on the leading wheel support. When the movable beam retracts to the front half section, the inclined tread at the tail part of the swing tooth is firstly contacted with the guide wheel, and when the movable beam continues to retract to the rear half section, the two groups of sliding guide wheels at the tail part of the swing tooth are sequentially contacted with the guide sliding plate. According to the invention, the force arm of the swinging tooth in the vertical state is increased, the stress state of the swinging tooth is greatly improved, the magnitude of the supporting force borne by the swinging tooth in the vertical state is reduced, the bottleneck that a hydraulic locking system cannot provide long-time locking is solved, the problem that the swinging tooth automatically swings downwards is solved, and the operation of the steel ladle covering and uncovering equipment is more stable and reliable.)

1. The swing tooth supporting mechanism is characterized by comprising swing teeth, guide wheels, a guide wheel support, a guide sliding plate and a swing tooth hanging beam, wherein the swing tooth hanging beam is arranged on a moving beam of the LF covering and uncovering device, the swing teeth are hinged to the swing tooth hanging beam, the guide wheel support is fixed on a fixed beam of the LF covering and uncovering device, the guide wheels and the guide sliding plate are arranged on the guide wheel support, when the moving beam retracts to the front half section, an inclined tread of the tail part of the swing teeth is firstly contacted with the guide wheels, two groups of sliding guide wheels are arranged at the tail part of the swing teeth, and when the moving beam continues to retract to the rear half section, the two groups of sliding guide wheels at the tail part of the swing teeth are sequentially contacted with the guide sliding plate.

2. The oscillating tooth supporting mechanism of the LF furnace ladle covering and uncovering device as claimed in claim 1, wherein the tail part of the oscillating tooth is provided with an inclined tread and an arc transition section.

3. The LF furnace ladle covering and uncovering device swinging tooth supporting mechanism as claimed in claim 1, wherein two sets of sliding guide wheels at the tail of the swinging tooth are coaxially arranged two by two, one set of sliding guide wheels is arranged at a distance of 300-600 mm from the supporting tooth hinge point, and the other set of sliding guide wheels is arranged at a distance of 500-600mm from the supporting tooth hinge point.

4. The oscillating tooth support mechanism of the LF furnace ladle covering and uncovering device, as claimed in claim 1, wherein the guide slide plate is provided with two levels of inclination angles, the first level of inclination angle is 8-12 ° and the second level of inclination angle is 18-22 °.

5. The oscillating tooth support mechanism of the LF furnace ladle covering and uncovering device is characterized in that an adjusting gasket set is arranged between the guide wheel bracket and the guide sliding plate.

Technical Field

The invention relates to the field of metallurgical equipment, in particular to a swing tooth supporting mechanism of a ladle covering and uncovering device of an LF (ladle furnace), which is mainly applied to swing tooth supporting of the ladle covering and uncovering device.

Background

In recent years, with the proposal of low-carbon, energy-saving and green steelmaking concepts, the whole-process steel ladle covering and uncovering technology is favored by steel enterprises. The steel ladle covering and uncovering device is suitable for short flow, compact in process arrangement, limited in installation space and perpendicular to a steel ladle car track of an LF (ladle furnace) and the steel ladle car track of a converter, and is mainly characterized in that the steel ladle covering and uncovering device is arranged at a steel ladle seat tank position, a swing tooth of the steel ladle covering and uncovering device can swing to a vertical state in a non-working state to release space for a hanging tank and a seat tank of a steel ladle, and the swing tooth swings to a horizontal working state in a covering and uncovering process. However, in the actual use process, the defect of automatic downward swinging of the swinging teeth is found, and analysis and demonstration mainly have two reasons, on one hand, the downward swinging of the supporting teeth is caused because the hydraulic locking system cannot realize long-time locking; on the other hand, when the swinging teeth swing to a vertical state, the original swinging tooth supporting mechanism has the problems of short arm of force and large stress.

Disclosure of Invention

The invention provides a swing tooth supporting mechanism suitable for an LF (ladle furnace) ladle covering and uncovering device, which greatly improves the stress state of a swing tooth by increasing the force arm of the swing tooth in a vertical state, reduces the magnitude of the supporting force borne by the swing tooth in the vertical state, solves the bottleneck that a hydraulic locking system cannot provide long-time locking, solves the problem that the swing tooth automatically swings downwards, and ensures that the operation of ladle covering and uncovering equipment is more stable and reliable.

In order to achieve the aim, the invention adopts the following technical scheme:

the swing tooth supporting mechanism comprises swing teeth, guide wheels, a guide wheel support, a guide sliding plate and a swing tooth hanging beam, wherein the swing tooth hanging beam is installed on a movable beam of the LF covering device, the swing teeth are hinged to the swing tooth hanging beam, the guide wheel support is fixed on a fixed beam of the LF covering device, the guide wheels and the guide sliding plate are installed on the guide wheel support, when the movable beam retracts to the front half section, an inclined tread of the tail portion of the swing teeth contacts with the guide wheels, two sets of sliding guide wheels are arranged at the tail portion of the swing teeth, and when the movable beam continues to retract to the rear half section, the two sets of sliding guide wheels at the tail portion of the swing teeth contact with the guide sliding plate in sequence.

The tail part of the swing tooth is provided with an inclined tread and an arc transition section.

The two groups of sliding guide wheels at the tail part of the swinging tooth are coaxially arranged in pairs, one group of sliding guide wheels are arranged at a position which is 300-fold 400mm away from a supporting tooth hinge point, and the other group of sliding guide wheels are arranged at a position which is 500-fold 600mm away from the supporting tooth hinge point.

The guide sliding plate is provided with two-stage inclination angles, the first-stage inclination angle is 8-12 degrees, and the second-stage inclination angle is 18-22 degrees.

And an adjusting gasket group is arranged between the guide wheel bracket and the guide sliding plate.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the force arm of the swinging tooth in the vertical state is increased, the stress state of the swinging tooth is greatly improved, the magnitude of the supporting force borne by the swinging tooth in the vertical state is reduced, the bottleneck that a hydraulic locking system cannot provide long-time locking is solved, the problem that the swinging tooth automatically swings downwards is solved, and the operation of the steel ladle covering and uncovering equipment is more stable and reliable.

Drawings

FIG. 1 is a three-dimensional view of a covering and uncovering device of an LF furnace.

Fig. 2 is a schematic view of a swing tooth structure.

Fig. 3 is a schematic structural view of the guide wheel bracket.

Fig. 4 is a schematic structural view of the sliding wheel.

Fig. 5 is a schematic structural view of the guide wheel.

In the figure: 1-swinging teeth, 1-1 inclined tread, 1-2 arc transition sections, 2-sliding wheel pin shafts, 3-sliding guide wheels, 4-pressing covers, 5-guide wheels, 6-guide wheel brackets, 7-guide sliding plates, 8-adjusting gasket groups and 9-swinging tooth hanging beams.

Detailed Description

The specific structure of the invention is explained in detail:

referring to fig. 1-5, the swing tooth supporting mechanism of the ladle covering and uncovering device of the LF furnace comprises swing teeth 1, a sliding guide wheel 3, a guide wheel 5, a guide wheel support 6, a guide sliding plate 7 and a swing tooth hanging beam 9, wherein the swing tooth hanging beam 9 is installed on a moving beam of the ladle covering and uncovering device of the LF furnace, the swing teeth 1 are hinged on the swing tooth hanging beam 9, the guide wheel support 6 is fixed on a fixed beam of the ladle covering and uncovering device of the LF furnace, and the guide wheel 5 and the guide sliding plate 7 are both installed on the guide wheel support 6. When the movable beam retracts to the front half section, the inclined tread at the tail part of the swing tooth 1 is firstly contacted with the guide wheel 5, and when the movable beam continues to retract to the rear half section, the two groups of sliding guide wheels 3 at the tail part of the swing tooth are sequentially contacted with the guide sliding plate 7.

The tail part of the swinging tooth 1 is provided with an inclined tread and an arc transition section, when the retraction of the movable beam is finished at the front half section, the inclined tread at the tail part of the swinging tooth 1 is separated from the guide wheel 5, and the first group of sliding guide wheels 3 are contacted with the guide sliding plate 7.

The tail of the swing tooth 1 is provided with two groups of sliding guide wheels 3, the sliding guide wheels 3 are coaxially arranged in pairs, one group of sliding guide wheels 3 are arranged at positions 300-400mm away from the hinge point of the support tooth 1, the other group of sliding guide wheels 3 are arranged at positions 500-600mm away from the hinge point of the support tooth 1, the front end of the guide wheel support 6 is provided with two guide sliding plates 7, when the movable beam retracts to the middle and rear sections, the first group of sliding guide wheels 3 are in contact with the guide sliding plates 7, when the movable beam continues to retract to the rear section, the first group of sliding guide wheels 3 are separated from the guide sliding plates 7, and the second group of sliding guide wheels 3 are in contact with the guide sliding plates 7.

The guide sliding plate 7 is provided with two-stage inclination angles, the first-stage inclination angle is 8-12 degrees, and the second-stage inclination angle is 18-22 degrees.

And an adjusting gasket group 8 is arranged between the guide wheel bracket 6 and the guide sliding plate 7.

Detailed description of the functions of the specific parts of the invention:

the swing tooth component takes a swing tooth 1 as a framework, an inclined tread 1-1 and an arc transition section 1-2 are arranged at the tail part of the swing tooth 1, 4 sliding wheel pin shafts 2 are welded and used for installing a sliding guide wheel 3, in order to ensure that the sliding wheel pin shafts 2 are coaxial in pairs, 2 through holes are additionally arranged on the swing tooth 1 before welding, one end of each sliding wheel pin shaft 2 is inserted, then welding is carried out, and a gland 4 is arranged at the end part of each sliding wheel pin shaft 2 and used for axially limiting the sliding guide wheel 3.

The guide wheel component takes a guide wheel bracket 6 as a framework, a guide wheel 5 is arranged on the guide wheel component and used for providing supporting force for the swinging-up and falling of the swinging teeth 1, a guide sliding plate 7 is arranged at the front end of the guide wheel bracket 6 and used for providing a supporting tread for two groups of sliding guide wheels 3 on the swinging teeth 1, and an adjusting gasket group 8 is arranged between the guide wheel bracket 6 and the guide sliding plate 7 and used for adjusting the installation position of the guide sliding plate 7.

The guide sliding plate 7 is a two-stage inclination angle guide sliding plate (the large angle of the front half section is 20 degrees, and the small angle of the rear half section is 10 degrees), and the supporting force borne by the swing teeth 1 is not obviously fluctuated in the 2 conversion processes.

The specific implementation method of the invention comprises the following steps:

the swinging tooth 1 is divided into 4 stages in the swinging process, in the first stage, the inclined tread 1-1 of the swinging tooth 1 is firstly contacted with the guide wheel 5, the swinging tooth 1 continues to retreat, and the swinging tooth 1 swings around the pin shaft under the action of the guide wheel 5; in the second stage, when the guide wheel 5 enters the arc transition section 1-2 of the swinging tooth 1, the first group of sliding guide wheels 3 start to contact with the 20-degree inclined section of the guide sliding plate 7, and at the moment, the inclined tread 1-1 of the swinging tooth 1 is separated from the guide wheel 5, so that the first conversion of the supporting force of the swinging tooth 1 is realized; in the third stage, after the first group of sliding guide wheels 3 enter the 10-degree inclined section of the guide sliding plate 7, the second group of sliding guide wheels 3 start to contact with the 20-degree inclined section of the guide sliding plate 7, and at the moment, the first group of sliding guide wheels 3 are separated from the guide sliding plate 7, so that the second conversion of the supporting force of the swinging teeth 1 is realized; and in the fourth stage, the swinging teeth 1 are completely withdrawn, the second group of sliding guide wheels 3 enter a 10-degree inclined section of the guide sliding plate 7, at the moment, the swinging teeth 1 swing to a vertical state, and the whole swinging process of the swinging teeth 1 is finished. The support tooth spring push rod is arranged on the swing tooth hanger 9, in the extending process of the movable beam, the support tooth 1 swings downwards under the combined action of the spring push rod and gravity, and the swinging-down process of the support tooth 1 is just opposite to the swinging-up process.