阅读说明：本技术 一种炼钢脱硫铁水倾翻车的锁紧控制方法及装置 (Locking control method and device for steelmaking desulfurization molten iron tipping vehicle ) 是由 王景娟 吕永学 张丙龙 曾卫民 王和兵 吴耀春 王胜 秦登平 赵长亮 孟志铎 张 于 2019-09-27 设计创作，主要内容包括：本发明涉及钢铁冶炼技术领域,尤其涉及一种炼钢脱硫铁水倾翻车的锁紧控制方法及装置,该方法应用于炼钢脱硫倾翻车锁紧控制装置中,该装置包括：控制器、锁紧装置、倾翻装置、机械限位装置,方法包括：基于锁紧指令,控制锁紧装置运行并指向倾翻装置；接收限位脉冲信号,限位脉冲信号具体为机械限位装置检测到锁紧装置运行至预设限位时生成的；基于限位脉冲信号的实际有效时长,控制锁紧装置在限位脉冲信号的下降沿时反向运行预设时长后停止运行,预设时长具体为1/3的实际有效时长,确保在倾翻装置上放置铁水包之后,该倾翻装置有晃动空间,使得在该炼钢脱硫铁水倾翻车运行过程中,铁水包内的铁水不至溅出,该锁紧装置与该倾翻装置不会有接触损坏。(The invention relates to the technical field of steel smelting, in particular to a locking control method and a locking control device for a steel-making desulphurization hot metal tipper, wherein the method is applied to the locking control device for the steel-making desulphurization tipper, and the device comprises the following components: the controller, locking device, tipping device, mechanical stop device, the method includes: controlling the locking device to operate and point to the tipping device based on the locking instruction; receiving a limiting pulse signal, wherein the limiting pulse signal is generated when the mechanical limiting device detects that the locking device runs to a preset limit; based on the actual effective duration of the limiting pulse signal, the locking device is controlled to reversely run for a preset duration and then stop running when the falling edge of the limiting pulse signal is reduced, the preset duration is specifically 1/3 actual effective duration, and after a ladle is placed on the tilting device, the tilting device has a shaking space, so that molten iron in the ladle is not splashed out in the running process of the steelmaking desulfurization molten iron tilting vehicle, and the locking device and the tilting device are not damaged by contact.)

1. The utility model provides a locking control device of steelmaking desulfurization molten iron tipper which characterized in that includes: the device comprises a controller, a locking device, a tipping device and a mechanical limiting device;

the locking device is used for starting operation and directing to the tipping device based on a locking instruction;

the mechanical limiting device is used for generating a limiting pulse signal when the locking device is detected to run to a preset limiting position, and feeding the limiting pulse signal back to the controller;

the controller is used for controlling the locking device to stop running after the locking device runs reversely for a preset time length on the falling edge of the limiting pulse signal based on the actual effective time length of the limiting pulse signal, wherein the preset time length is specifically 1/3 of the actual effective time length.

2. The apparatus of claim 1, further comprising: a verification device and a prompting device;

the verification device is used for comparing the actual effective duration with a prestored target effective duration;

and the prompting device is used for prompting to replace the mechanical limiting device when the actual effective time length is less than or equal to 1/2 of the target effective time length.

3. The device according to claim 1, characterized in that said locking means comprise in particular:

a power frequency electric device and an electro-hydraulic push rod;

and the power frequency electric device is used for driving the electro-hydraulic push rod to operate based on the locking instruction.

4. The device according to claim 3, characterized in that said mechanical stop means comprise in particular: the device comprises a mechanical limit collision rod, a mechanical limit normally open contact, a power supply module and a sending module, wherein the two ends of the mechanical limit normally open contact are respectively connected with the power supply module and the sending module;

the position where the mechanical limit impact rod points is the position of the preset limit;

when the electro-hydraulic push rod runs to a preset limit, the electro-hydraulic push rod touches the mechanical limit striker, so that the mechanical limit striker moves, the mechanical limit normally open contact is closed, the power supply module supplies power to the sending module, and a limit pulse signal is generated.

5. The device as claimed in claim 4, wherein the distance between the mechanical limit striker and the tilting device is 3-4 cm.

6. The apparatus of claim 1, further comprising: a timer;

the controller starts the timer to time based on the rising edge of the limit pulse signal; the controller stops the timer to time based on the falling edge of the limit pulse signal;

and the controller acquires the actual effective duration of the limit pulse signal according to the timing of the timer.

7. The apparatus of claim 1, wherein the controller is specifically any one of:

programmable logic controller PLC, field programmable gate array controller FPGA and singlechip.

8. A locking control method of a steelmaking desulfuration molten iron tipper is applied to a steelmaking desulfuration tipper locking control device, and the device comprises: controller, locking device, tipping device, mechanical stop device, its characterized in that includes:

generating a locking instruction;

controlling the locking device to operate and point to the tipping device based on the locking instruction;

receiving a limiting pulse signal, wherein the limiting pulse signal is a limiting pulse signal generated when the mechanical limiting device detects that the locking device runs to a preset limit;

and controlling the locking device to stop running after reversely running for a preset time length at the falling edge of the limit pulse signal based on the actual effective time length of the limit pulse signal, wherein the preset time length is specifically 1/3 of the actual effective time length.

9. The method of claim 8, wherein before controlling the locking device to stop operating after a predetermined time of reverse operation at a falling edge of the limiting pulse signal based on an actual effective duration of the limiting pulse signal, further comprises:

and obtaining the actual effective duration of the limiting pulse signal based on the rising edge of the pulse signal and the falling edge of the pulse signal.

10. The method of claim 9, wherein after obtaining the actual active duration of the limiting pulse signal based on the rising edge of the pulse signal and the falling edge of the pulse signal, further comprising:

comparing the actual effective duration with a prestored target effective duration;

and prompting to replace the mechanical limiting device when the actual effective time length is less than or equal to 1/2 of the target effective time length.

Technical Field

The invention relates to the technical field of steel smelting, in particular to a locking control method and device of a steel-making desulphurization molten iron tipping vehicle.

Background

When the tipping equipment is vertical, the steel-making and desulfurizing molten iron tipping vehicle uses a crown block to hoist a ladle to be placed on the tipping equipment and locks the tipping equipment, so that molten iron in the ladle is prevented from splashing in the running process of the steel-making and desulfurizing molten iron tipping vehicle; and unlocking the tipping equipment to enable the tipping equipment to be in an inclined state, and carrying out slag skimming operation on the ladle.

Wherein, before the ladle is lifted by the crown block and placed on the tipping device, the tipping device needs to be locked.

After the existing locking mechanism is locked, no shaking space exists between the tipping device and the locking device, so that after a ladle is placed on the tipping device, the tipping device abuts against the locking mechanism, and the locking device is easily damaged.

Therefore, how to effectively avoid the damage of the locking device is a technical problem to be solved urgently at present.

Disclosure of Invention

In view of the above problems, the present invention has been made to provide a locking control method and apparatus of a steelmaking desulfurization ladle car which overcomes or at least partially solves the above problems.

In one aspect, an embodiment of the present invention provides a locking control device for a steel-making desulfurized molten iron tipper, including: the device comprises a controller, a locking device, a tipping device and a mechanical limiting device;

the locking device is used for starting operation and directing to the tipping device based on a locking instruction;

the mechanical limiting device is used for generating a limiting pulse signal when the locking device is detected to run to a preset limiting position, and feeding the limiting pulse signal back to the controller;

the controller is used for controlling the locking device to stop running after the locking device runs reversely for a preset time length on the falling edge of the limiting pulse signal based on the actual effective time length of the limiting pulse signal, wherein the preset time length is specifically 1/3 of the actual effective time length.

Further, still include: a verification device and a prompting device;

the verification device is used for comparing the actual effective duration with a prestored target effective duration;

and the prompting device is used for prompting to replace the mechanical limiting device when the actual effective time length is less than or equal to 1/2 of the target effective time length.

Further, the locking device specifically includes:

a power frequency electric device and an electro-hydraulic push rod;

and the power frequency electric device is used for driving the electro-hydraulic push rod to operate based on the locking instruction.

Further, mechanical stop device specifically includes: the device comprises a mechanical limit collision rod, a mechanical limit normally open contact, a power supply module and a sending module, wherein the two ends of the mechanical limit normally open contact are respectively connected with the power supply module and the sending module;

the position where the mechanical limit impact rod points is the position of the preset limit;

when the electro-hydraulic push rod runs to a preset limit, the electro-hydraulic push rod touches the mechanical limit striker, so that the mechanical limit striker moves, the mechanical limit normally open contact is closed, the power supply module supplies power to the sending module, and a limit pulse signal is generated.

Further, the distance between the mechanical limit collision rod and the tipping device is 3-4 cm.

Further, still include: a timer;

the controller starts the timer to time based on the rising edge of the limit pulse signal; the controller stops the timer to time based on the falling edge of the limit pulse signal;

and the controller acquires the actual effective duration of the limit pulse signal according to the timing of the timer.

Further, the controller is specifically any one of the following:

programmable logic controller PLC, field programmable gate array controller FPGA and singlechip.

On the other hand, the embodiment of the invention also provides a locking control method of the steelmaking desulfurization molten iron tipper, which is applied to the steelmaking desulfurization tipper locking control device, and the device comprises: controller, locking device, tipping device, mechanical stop device include:

generating a locking instruction;

controlling the locking device to operate and point to the tipping device based on the locking instruction;

receiving a limiting pulse signal, wherein the limiting pulse signal is a limiting pulse signal generated when the mechanical limiting device detects that the locking device runs to a preset limit;

and controlling the locking device to stop running after reversely running for a preset time length at the falling edge of the limit pulse signal based on the actual effective time length of the limit pulse signal, wherein the preset time length is specifically 1/3 of the actual effective time length.

Further, before controlling the locking device to stop operating after reversely operating for a preset time length at the falling edge of the limit pulse signal based on the actual effective time length of the limit pulse signal, the method further includes:

and obtaining the actual effective duration of the limiting pulse signal based on the rising edge of the pulse signal and the falling edge of the pulse signal.

Further, after obtaining the actual effective duration of the limit pulse signal based on the rising edge of the pulse signal and the falling edge of the pulse signal, the method further includes:

comparing the actual effective duration with a prestored target effective duration;

and prompting to replace the mechanical limiting device when the actual effective time length is less than or equal to 1/2 of the target effective time length.

One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

the invention provides a locking control device of a steelmaking desulfuration molten iron tipper, which comprises a controller, a locking device, a tipper and a mechanical limiting device, wherein when the locking device starts to operate based on a locking instruction and points to the tipper, the mechanical limiting device detects whether the locking device operates to a preset limit or not, when the locking device operates to the preset limit, a limit pulse signal is generated and then fed back to the controller, the controller controls the locking device to reversely operate for a preset time length when the limiting pulse signal descends based on the actual effective time length of the limit pulse signal, the preset time length is specifically 1/3 actual effective time length, the effectiveness of the limit pulse signal of the mechanical limiting device is further monitored in real time, the locking device is controlled to lock within the effectiveness range of the limit pulse signal, and after a ladle is placed on the tipper, the tipping device can have a shaking space, so that molten iron in a ladle is not splashed out in the running process of the steelmaking desulfurization molten iron tipping vehicle, and meanwhile, the locking device cannot be damaged after being contacted with the tipping device.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

FIG. 1 is a schematic structural view showing a lock control apparatus of a steel-making desulfurized molten iron tilting cart according to an embodiment of the present invention;

FIG. 2 is a schematic view showing the overall construction of a steel-making desulfurized molten iron tipper according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a mechanical stop device according to an embodiment of the invention;

fig. 4 is a schematic view showing a locking control method of a steelmaking desulfurization ladle dumper in an embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.