阅读说明：本技术 高炉铁水罐车的就位和定米牵引方法 (In-place and fixed-length traction method for blast furnace molten iron tank car ) 是由 朱维智 魏振杰 于 2021-01-12 设计创作，主要内容包括：本发明属于冶金运输设备控制技术领域,具体涉及一种高炉铁水罐车的就位和定米牵引方法,其特征在于,包括如下步骤：1)由铁运操作工将第一个空的铁水罐车与铁水罐对位牵引车通过缓冲车钩对接完成；2)当首个铁水罐装满铁水后,出铁操作工操作遥控器“一键到下罐”,控制铁水罐对位牵引车行走至第二个铁水罐到达出铁口就位；3)直到最后一个铁水罐到出铁口就位；4)当最后一个铁水罐装满铁水后,按“一键走设定距离”键,走行前抱闸自动释放,然后铁水罐对位牵引车以设定距离米数走行退出,以待下次铁水罐车就位操作。与现有技术相比,本发明的有益效果如下：操作方便,明显提高了运行效率,能满足冶金企业铁水罐车的基本牵引要求。(The invention belongs to the technical field of metallurgical transportation equipment control, and particularly relates to a method for positioning and fixed-length traction of a blast furnace molten iron tank car, which is characterized by comprising the following steps of: 1) the hot metal transporting operator butt-joints the first empty hot metal ladle car with the hot metal ladle alignment tractor through the buffer coupler; 2) when the first hot metal ladle is filled with molten iron, the tapping operator operates the remote controller to 'one key to go to the lower ladle', and controls the hot metal ladle alignment tractor to walk to the second hot metal ladle to reach the tapping hole to be in place; 3) until the last hot metal ladle reaches the tap hole to be in place; 4) and when the last hot metal ladle is filled with molten iron, pressing a 'one-key-travel set distance' key, automatically releasing the internal contracting brake before traveling, and then enabling the hot metal ladle alignment tractor to travel and exit by the set distance of meters so as to wait for the next hot metal ladle car to be in place for operation. Compared with the prior art, the invention has the following beneficial effects: the operation is convenient, the operation efficiency is obviously improved, and the basic traction requirement of the molten iron tank car of the metallurgical enterprise can be met.)

1. The positioning and fixed-length traction method of the blast furnace molten iron tank car is characterized by comprising the following steps:

1) firstly, arranging a plurality of empty hot metal ladle cars to be transported to a rail at a blast furnace taphole by a dispatching diesel locomotive according to production conditions, and butting the nearest hot metal ladle car with a hot metal ladle alignment tractor by a hot metal operator through a buffer coupler; a reflecting plate matched with the laser range finder is arranged on the tapping platform above the rails, the laser range finder is arranged on the hot metal ladle alignment tractor, and the hot metal ladle alignment tractor is positioned at the tail of a series of hot metal ladle cars and drives the hot metal ladle cars to move in a pushing mode;

2) the hot metal ladle alignment tractor is a driving car with a band-type brake motor, the motor is a variable frequency motor and is wirelessly controlled by a remote controller, when the hot metal ladle alignment tractor stops, the band-type brake acts, a blast furnace tapping operator takes over subsequent operation, and when a first hot metal ladle is filled with molten iron, the tapping operator operates the remote controller to 'one key' to go to a lower ladle and controls the hot metal ladle alignment tractor to walk to a second hot metal ladle to reach a tap hole to be in place;

3) when the second molten iron tank is filled with molten iron, the tapping operator continues to operate the remote controller to 'one key to go to the lower tank', and controls the molten iron tank alignment tractor to walk to the third molten iron tank to the tap hole to be in position, … …, until the last molten iron tank to the tap hole to be in position;

4) and after the last hot metal ladle is filled with molten iron, the dispatching arrangement is carried out to connect the hot metal ladle car with the hot metal ladle car in a hanging mode, a hot metal operation worker unhooking the hot metal ladle alignment tractor and the hot metal ladle car and presses a 'one-key walking set distance' key to automatically release the internal contracting brake before walking, and then the hot metal ladle alignment tractor walks and retreats by the set distance of meters to wait for the next hot metal ladle car to be in place for operation.

2. The method for positioning and metering the draft of the blast furnace hot metal ladle car according to claim 1, wherein five keys of 'one key to lower tank', 'one key for setting distance', 'one key for stopping', 'inching for advancing' and 'inching for backing' are respectively arranged on the remote controller, and the operation of the alignment tractor of the hot metal ladle is remotely controlled by a command key on the remote controller.

3. The method for positioning and metering the draft of a blast furnace hot metal ladle car according to claim 2, wherein the set distance is inputted in meters as an actual distance by which the hot metal ladle alignment tractor is actually withdrawn to the position to be positioned.

4. The in-place and fixed-length traction method for the blast furnace hot-metal ladle car according to claim 1, wherein the remote controller is in wireless data communication with a control system of the hot-metal ladle alignment tractor, and a liquid crystal display screen is arranged on the remote controller to display the running state of the hot-metal ladle alignment tractor in real time, wherein the running state comprises motor voltage, motor current, hot-metal ladle number information and running abnormality prompt information.

5. The in-place and fixed-length traction method for the blast furnace hot metal ladle car as claimed in claim 1, wherein the laser range finder is a cloud service laser range finder, and data measured on the laser range finder can be transmitted to a remote controller in real time through Bluetooth to realize data sharing.

6. The method for the in-position and the metering traction of the blast furnace hot metal ladle car according to claim 5, wherein the band-type brake is a cylinder-driven or hydraulic cylinder-driven band-type brake.

7. The in-position and fixed-length traction method for the blast furnace hot-metal ladle car according to claim 1, wherein a control system of the hot-metal ladle alignment tractor is a PLC control system.

8. The method for positioning and metering the draft of a hot metal ladle car according to claim 7, wherein the traveling distances of "one key to lower tank" and "one key travel set distance" are set separately.

9. The method for positioning and metering the traction of the blast furnace hot metal ladle car according to claim 1, wherein a motor of the hot metal ladle alignment tractor has a variable frequency speed regulation starting operation function.

10. The in-place and metering traction method of the blast furnace hot metal ladle car according to claim 1, wherein the power supply of the motor is realized by synchronously rotating and reeling a cable through a cable drum on the tractor, a mandrel of the cable drum is connected with a torque motor, the torque motor is electrically connected with a control box, the control box is electrically connected with a power transmission box, and the action torque value of the torque motor is 5-15 N.m.

Technical Field

The invention belongs to the technical field of metallurgical transportation equipment control, and particularly relates to a positioning and fixed-length traction method suitable for a blast furnace molten iron tank car before tapping molten iron from an iron-making blast furnace in a steel plant.

Background

The hot metal ladle car is a special vehicle for transporting blast furnace hot metal to steel plant, pig casting machine and foundry to make steel, cast iron block or cast ingot mould. The alignment tractor is suitable for alignment operation of molten iron tank cars, torpedo cars, slag tank cars and the like in iron and steel enterprises. Before tapping molten iron from an iron and iron making blast furnace in domestic iron and steel works, a hot metal ladle is pulled in place by an internal combustion locomotive in a railway department, a railway operator observes the hot metal ladle visually on site and communicates with a locomotive driver through an interphone to command a tank car to be in place, iron shoes are placed at front and rear wheels of the tank car after the tank car is in place to prevent the tank car from sliding on a rail, then the interphone talks with the blast furnace tapping operator to inform the tank car that the tank car is in place, and then the blast furnace tapping operator can operate a turnover tapping hole to inject the molten iron into the hot metal ladle. When a ladle is filled with molten iron, a blast furnace tapping operator needs to inform the iron transport locomotive by using an interphone, the iron transport operator removes iron shoes and instructs the internal combustion locomotive to pull the subsequent ladle to be in place, the iron shoes at the front and rear wheels of the newly-in-place ladle car are placed again, and the blast furnace tapping operator is informed of the completion of the preparation. The complicated operation flow ensures that the molten iron tank car is used more in the positioning process and must be followed by the diesel locomotive for a long time, so that misunderstanding and misjudgment caused by interphone conversation are easily caused, and mechanical abrasion and energy waste are caused by long-time standby work of the diesel locomotive.

The Chinese invention patent with the patent application number of 201510616875.9 discloses a blast furnace tapping and hot metal ladle alignment method under the furnace, wherein a turning funnel and a hot metal ladle alignment tractor are controlled in a linkage manner in the blast furnace tapping process, the hot metal ladle alignment tractor is operated by a remote controller in a remote control manner, a rotary encoder is arranged on an output shaft of a speed reducer of the hot metal ladle alignment tractor, and the rotary encoder is connected with a tractor alignment control system; when the hot metal bottle counterpoints, calculate the displacement of hot metal bottle counterpoint tractor through the number of turns of the wheel to current jar position and jar number information are updated automatically, transmit to the blast furnace control room that taps a blast furnace in, and show on tractor counterpoint control system operation panel. This scheme has adopted hot metal bottle counterpoint tractor to replace diesel locomotive to accomplish hot metal bottle counterpoint operation under the blast furnace, and remote control counterpoints, prevents through safe interlocking ware that hot metal bottle tractor from taking place to remove because of the maloperation at the molten iron in-process to accomplish the tapping operation. The scheme has the defects that the control is complex, the number of control nodes is large, for example, the alignment of the hot metal ladle needs to be further controlled by calculating the number of turns of the wheels and judging the number of turns by a control system, and the reliability of each control node has influence on the alignment effect and efficiency; in addition, the safety interlocking device can only ensure that the wheel motor cannot move due to misoperation in the tapping process, but cannot ensure the movement caused by non-operation reasons, such as external force and the like. Therefore, the market needs a counterpoint method with higher reliability and higher control efficiency.

Disclosure of Invention

The invention aims to provide a positioning and fixed-length traction method of a blast furnace hot metal ladle car, which overcomes the defects of the prior art, adopts a more optimized control method to control the movement of a hot metal ladle alignment tractor, adopts an industrial remote controller to realize fixed-length control on the basis of a laser ranging technology, finishes one-key positioning of a first tank and one-key positioning of a next tank, can also set the number of meters, finishes the running of the set number of meters by one key, is convenient to operate and has high reliability; the matched hot metal ladle alignment tractor is driven by the band-type brake motor, so that the sliding of the hot metal ladle alignment tractor in the tapping process can be avoided, and the basic traction requirement of a hot metal ladle car of a metallurgical enterprise can be met.

In order to achieve the purpose, the invention is realized by the following technical scheme:

the positioning and fixed-length traction method of the blast furnace molten iron tank car is characterized by comprising the following steps:

1) firstly, arranging a plurality of empty hot metal ladle cars to be transported to a rail at a blast furnace taphole by a dispatching diesel locomotive according to production conditions, and butting the nearest hot metal ladle car with a hot metal ladle alignment tractor by a hot metal operator through a buffer coupler; a reflecting plate matched with the laser range finder is arranged on the tapping platform above the rails, the laser range finder is arranged on the hot metal ladle alignment tractor, and the hot metal ladle alignment tractor is positioned at the tail of a series of hot metal ladle cars and drives the hot metal ladle cars to move in a pushing mode;

2) the hot metal ladle alignment tractor is a driving car with a band-type brake motor, the motor is a variable frequency motor and is wirelessly controlled by a remote controller, when the hot metal ladle alignment tractor stops, the band-type brake acts, a blast furnace tapping operator takes over subsequent operation, and when a first hot metal ladle is filled with molten iron, the tapping operator operates the remote controller to 'one key' to go to a lower ladle and controls the hot metal ladle alignment tractor to walk to a second hot metal ladle to reach a tap hole to be in place;

3) when the second molten iron tank is filled with molten iron, the tapping operator continues to operate the remote controller to 'one key to go to the lower tank', and controls the molten iron tank alignment tractor to walk to the third molten iron tank to the tap hole to be in position, … …, until the last molten iron tank to the tap hole to be in position;

4) and after the last hot metal ladle is filled with molten iron, the dispatching arrangement is carried out to connect the hot metal ladle car with the hot metal ladle car in a hanging mode, a hot metal operation worker unhooking the hot metal ladle alignment tractor and the hot metal ladle car and presses a 'one-key walking set distance' key to automatically release the internal contracting brake before walking, and then the hot metal ladle alignment tractor walks and retreats by the set distance of meters to wait for the next hot metal ladle car to be in place for operation.

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

1) based on the laser ranging technology, the industrial remote controller is adopted to realize meter setting control, complete one-key positioning of the first tank and one-key positioning of the next tank, and can also set the number of meters, and the walking of the set number of meters can be completed by one key, so the operation is convenient, and the operation reliability is obviously improved;

2) the matched hot metal ladle alignment tractor is driven by a band-type brake motor, so that the sliding of the hot metal ladle alignment tractor in the tapping process can be effectively avoided, and the basic traction requirement of a hot metal ladle car of a metallurgical enterprise can be met;

3) the invention is used for the drawing, locating, contracting brake and fixed-meter operation method of the molten iron tank car when tapping iron from the iron and iron making blast furnace of the steel plant, completely replaces the original technological process of locating the molten iron tank car, the alignment tractor of the molten iron tank is directly operated by the tapping operator of the blast furnace, replaces the original diesel locomotive and the iron operation operator, reduces the number of the posts of the participators, and improves the operation efficiency.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a right side view of FIG. 1;

FIG. 3 is a schematic view of the running gear in an embodiment of the invention;

FIG. 4 is a logic block diagram of a control system of the hot metal ladle alignment tractor according to the embodiment of the invention;

FIG. 5 is a diagram illustrating key assignments of a remote control in an embodiment of the invention;

FIG. 6 is a diagram illustrating an application state of an embodiment of the present invention;

fig. 7 is a schematic view of a cable reel configuration in an embodiment of the present invention.

In the figure: 1-a vehicle body; 2-a shed; 3-a cable drum; 4-wheel pair; 5-a walking transmission mechanism; 6, coupler; 7-a band-type brake mechanism; 8-a counterweight; 9-a guide rail; 10-ladle car; 11-reduction box body; 12-a motor; 13-a coupler; 14-a spring; 15-an input shaft; 16-hot metal ladle alignment tractor; 17-tapping platform; 18-a reflector plate; 19-a torque motor; 20-laser rangefinder; 21-a power transmission box; 22-control box.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, which are schematic structural views of an embodiment of the in-place and fixed-length traction method of the blast furnace hot metal ladle car, the structure comprises a car body 1, a shed 2, wheel pairs 4, a cable drum 3, a traveling transmission mechanism 5 and a car coupler 6, wherein the shed 2 is arranged on the car body 1, the cable drum 3 is arranged on one side of the shed 2, and two wheel pairs 4 are arranged below the car body 1. The front and the back of the vehicle body 1 are respectively provided with a coupler 6, the wheel set 4 is connected with a walking transmission mechanism 5, the walking transmission mechanism 5 comprises a reduction box body 11, a motor 12 and a coupler 13, an output shaft of the motor 12 is connected with an input shaft 15 of the reduction box body 11 through the coupler 13, the reduction box body 11 is provided with the wheel set 4, and two ends of the wheel set 4 are connected with the vehicle body 1 through bearing seats. The contracting brake mechanism 7 is driven by an air cylinder or a hydraulic cylinder, and the contracting brake automatically acts when the motor stops, so that the vehicle can be prevented from sliding under the unexpected condition. The function of this function replacement skate need not operating personnel manual placement, and the response is fast, and control is nimble.

The invention relates to a method for positioning and fixed-length traction of a blast furnace molten iron tank car, which comprises the following steps:

1) firstly, arranging a plurality of empty hot metal ladle cars to be transported to rails at a blast furnace taphole by a dispatching diesel locomotive according to production conditions, and completing butt joint of a first empty hot metal ladle car 10 and a hot metal ladle alignment tractor 16 through a buffer coupler by a hot metal operator; a reflecting plate 18 matched with a laser range finder is arranged on a tapping platform 17 above a rail, the laser range finder 20 is arranged on a hot metal ladle alignment tractor 16, and the hot metal ladle alignment tractor is positioned at the tail of a series of hot metal ladle cars and drives the hot metal ladle cars to move in a pushing mode; the laser range finder is a cloud service laser range finder, and the data measured on the laser range finder can be transmitted to the remote controller in real time through the Bluetooth, so that data sharing is realized. The laser ranging function is the real-time collection and the demonstration of the distance of using laser range finder to counterpoint the hot metal bottle between tractor and the blast furnace taphole, and the control system PLC of cooperation hot metal bottle counterpoint tractor realizes deciding the meter walking.

2) The hot metal bottle counterpoint tractor is for taking band-type brake motor drive car, and motor 12 is inverter motor, receives remote controller wireless control, installs two 55 KW's converters on the tractor, controls the start-up and the operation of two motors respectively, variable frequency deceleration operation or power frequency full speed operation. When the hot metal ladle alignment tractor stops, the brake mechanism 7 acts, a blast furnace tapping operator takes over subsequent operation, and after the first hot metal ladle is filled with hot metal, the tapping operator operates the remote controller to 'one key to the lower ladle', so that the hot metal ladle alignment tractor is controlled to walk to the second hot metal ladle to reach the taphole to be in place.

3) When the second molten iron tank is filled with molten iron, the tapping operator continues to operate the remote controller to 'one key to go to the lower tank', and controls the molten iron tank alignment tractor to walk to the third molten iron tank to the tap hole to be in position, … …, until the last molten iron tank to the tap hole to be in position;

4) and after the last hot metal ladle is filled with molten iron, the dispatching arrangement is carried out to connect the hot metal ladle car with the hot metal ladle car in a hanging mode, a hot metal operation worker unhooking the hot metal ladle alignment tractor and the hot metal ladle car and presses a 'one-key walking set distance' key to automatically release the internal contracting brake before walking, and then the hot metal ladle alignment tractor walks and retreats by the set distance of meters to wait for the next hot metal ladle car to be in place for operation.

The remote controller is provided with five keys of 'one key to lower tank', 'one key walking set distance', 'one key stop', 'inching forward' and 'inching backward', and the actions of the alignment tractor of the hot metal tank are remotely controlled through command keys on the remote controller. The running distances from one key to the lower tank and from one key to the set distance can be respectively set.

The rice-setting walking is controlled by two gears: the distance between two hot metal ladle openings is traveled each time by 'one key to lower ladle', and the hot metal ladle can be automatically traveled to the second ladle opening to be in place by pressing. The 'one-key walking set distance' can set the walking meter number in advance and can be controlled by 'one-key stopping' to stop walking at any time. And inputting the set distance according to the actual distance from the actual exit of the molten iron tank alignment tractor to the position to be set, wherein the unit is meter. At the moment, the tractor can be directly withdrawn to a pending position by pressing the key, so that the entering area of the next row of molten iron tank cars can be quickly given out. The one-key stop function is that the tractor can be stopped by one key through a remote controller or a manual button when the tractor is in the walking process. The jog forward and jog backward can be used for distance correction when the set distance is inaccurate in the "one-key-to-lower tank" and the "one-key-travel set distance" or in other situations requiring jog travel.

In the embodiment, the control system of the hot metal ladle alignment tractor is a PLC control system. The motor of the hot metal ladle alignment tractor has the function of variable frequency speed regulation starting operation. The remote controller is an industrial remote controller, and the effective remote control distance is more than 100 meters. The remote controller carries out wireless data communication with the control system of hot metal bottle counterpoint tractor, is equipped with liquid crystal display on the remote controller, shows the running state of hot metal bottle counterpoint tractor in real time, including motor voltage, motor current, hot metal bottle number information and unusual prompt information of operation.

Referring to fig. 7, the power supply of the motor 12 is realized by synchronously rotating and reeling and unreeling the cable through the cable reel 3 on the tractor, the mandrel of the cable reel 3 is connected with the torque motor 19, the torque motor 19 is electrically connected with the control box 22, the control box 22 is electrically connected with the power transmission box 21, the action torque value of the torque motor 19 is 5-15 n.m, a certain tension can be kept for the cable during walking, the ground dragging state is avoided, and the cable abrasion is reduced. The torque motor has the characteristics of low rotating speed, large torque, strong overload capacity, quick response, good characteristic linearity, small torque fluctuation and the like, and can directly drive a load to save a speed reduction transmission gear, thereby improving the running precision of the system. The hot metal ladle alignment tractor is powered by a ground power supply cabinet through a 110-meter cable of a cable drum, and two 45KW motors are driven to run, so that the hot metal ladle car is driven to run by replacing an internal combustion locomotive.

The above embodiments are merely specific examples selected for illustrating the objects, technical solutions and advantages of the present invention in detail, and should not be construed as limiting the scope of the present invention, and various modifications, equivalent substitutions and improvements can be made without departing from the spirit and principle of the present invention.