Biconical spiral slicking device for rapid loading of coke car and control method of biconical spiral slicking device

Abstract

The invention relates to a biconical spiral slicking device for rapid loading of coke cars and a control method thereof.The biconical spiral slicking device comprises a hanging bracket, an electric-hydraulic push rod and a biconical spiral scraper assembly; the biconical spiral scraper assembly is composed of a middle box body, a plough flat head, a conical spiral scraper and a driving device. The double-cone-shaped spiral scraper structure with the thick middle and the two thin ends is adopted, the material distribution characteristic during rapid loading of a coke car can be well adapted, and therefore the coke charge level in a compartment can be rapidly leveled; the conical spiral scraper can avoid excessive pushing and cutting of the coke, the rotating speed of the conical spiral scraper is reasonably matched with the running speed of an automobile during loading, the effect that no moving friction exists between the coke and the conical spiral scraper in the advancing direction of the automobile can be achieved, and therefore coke damage caused in the scraping process is avoided to the maximum extent.

Description

Technical Field

[0001] The present invention relates to the technical field of coke transportation, and particularly relates to a double-cone spiral leveling device and a control method thereof used when coke is quickly loaded onto a vehicle by a truck. Background Art

[0002] When coke is transported by truck, due to the characteristics of coke itself (such as rough surface, irregular block shape, light specific gravity, etc.), the coke surface in the carriage after loading is uneven, showing the characteristics of being high in the middle and low on both sides, which is not conducive to improving the truck loading rate and is also inconvenient for transportation. Therefore, a leveling operation is required. At present, manual leveling or a scraper-type rigid leveling device (such as "a truck unloader" disclosed in the Chinese utility model patent with the publication number CN2155360Y and "a truck automatic leveling device" disclosed in the Chinese utility model patent with the publication number CN208345356U, etc.) is mostly used for leveling. Leveling the coke in the truck carriage manually not only has a large labor intensity but also has low efficiency. And leveling through a rigid leveling device such as a scraper is likely to cause coke spillage and breakage.

[0003] The newly developed coke truck rapid loading technology continuously feeds coke from the coke bin into the buffer bin through a belt. A hydraulic gate is arranged at the bottom discharge port of the buffer bin. The loading amount is preset, and coke is quickly and quantitatively unloaded into the moving truck through the hydraulic gate and the loading chute. For example, the "intelligent quantitative discharging and loading device" disclosed in the Chinese utility model with the authorization publication number CN 214827411U, through the combined use of a sliding frame and a leveling frame, when the screw rod rotates to discharge materials, the sliding frame and the leveling frame can reciprocate, so as to level the materials accumulated at the bottom of the discharge pipe, prevent raw material accumulation, and improve the safety of device use.

[0004] The leveling devices used during the above-mentioned coke truck rapid loading have the following problems:

[0005] 1) When loading coke onto a truck rapidly, the loading speed is fast and it is completed during the movement of the truck. Due to the light specific gravity and rough surface of coke, using a rigid leveling device such as a scraper is likely to cause coke splashing and spillage, and the coke will be damaged due to extrusion.

[0006] 2) When loading coke onto a truck rapidly, the loading process and the leveling process are carried out simultaneously. When the loading is completed, the leveling operation ends, and at the same time, the truck scale weighing is completed. In order to avoid secondary unloading after the truck is overloaded, a negative tolerance is often used during coke truck rapid loading, and a small amount of coke is supplemented after loading to reach the predetermined coke loading amount. However, the small amount of supplemented coke can only be scattered on the upper layer of the coke in the already leveled carriage, which is easy to spill and is not conducive to further capping treatment. Summary of the Invention

[0007] The present invention provides a double - conical spiral leveling device for rapid loading of coke trucks and its control method. Adopting a double - conical spiral scraper structure that is thick in the middle and thin at both ends, it can well adapt to the characteristics of the coke distribution during the rapid loading of coke trucks (the material surface is high at the feeding point in the middle of the carriage and gradually transitions to the lower parts on both sides of the carriage), thus realizing the rapid leveling of the coke material surface in the carriage. The conical spiral scraper can avoid excessive pushing and cutting of coke. By reasonably matching the rotation speed of the conical spiral scraper with the running speed of the truck during loading, the effect of no moving friction between the coke and the conical spiral scraper can be achieved along the forward direction of the vehicle, thereby minimizing the coke breakage caused during the leveling process.

[0008] To achieve the above - mentioned purpose, the present invention is realized by adopting the following technical solutions:

[0009] A double - conical spiral leveling device for rapid loading of coke trucks includes a suspension bracket, an electro - hydraulic push rod, and a double - conical spiral scraper assembly. The double - conical spiral scraper assembly consists of a middle box body, a plow head, a conical spiral scraper, and a driving device. The middle box body is suspended below the cross - beam of the loading platform through the suspension bracket. The top of the suspension bracket is hinged to the cross - beam, and the middle part of the suspension bracket is hinged to the extended end of the electro - hydraulic push rod. Under the action of the electro - hydraulic push rod, the double - conical spiral scraper assembly can rotate as a whole around the top hinge point, thereby realizing the lifting action. The driving device is arranged inside the middle box body. One set of conical spiral scrapers is arranged on each side of the middle box body. The inner end of the conical spiral scraper is connected to the driving device and can rotate around the axis driven by the driving device. The inner - end spiral diameter of the conical spiral scraper is larger than the outer - end spiral diameter. A plow head is arranged at one end of the middle box body, and the plow head is a wedge - shaped structure protruding outward in the middle. The bottom surface of the plow head and the bottom surface of the conical spiral scraper are in the same plane.

[0010] Further, the driving device is a double - output - shaft reduction motor.

[0011] Further, a small conical spiral is also arranged at the outer end of the conical spiral scraper. The bottom surface of the small conical spiral is a plane, and the bottom surface of the small conical spiral is lower than the bottom surface of the conical spiral scraper.

[0012] Further, a hanging point is arranged on the connecting shaft between the small conical spiral and the conical spiral scraper and is connected to the cross - beam of the loading platform through an auxiliary suspension cable.

[0013] A double - conical spiral leveling device for rapid loading of coke trucks also includes a coke leveling control system; the coke leveling control system consists of a coke leveling main controller, a rangefinder, a speedometer, and a limit switch; the rangefinder is arranged above the plow head and is used to monitor the distance between the double - conical spiral leveling device and the tailboard of the truck carriage; the speedometer is arranged at the bottom of the coke bin and is used to monitor the moving speed of the truck during loading; the limit switch is arranged outside the extended end of the electro - hydraulic push rod and is used to monitor the lifting height of the double - conical spiral scraper assembly; the signal output ends of the rangefinder, the speedometer, and the limit switch are connected to the coke leveling main controller, and the control ends of the driving device and the electro - hydraulic push rod are connected to the coke leveling main controller; the coke leveling main controller is additionally connected to the main controller of the rapid loading system.

[0014] A control method for a double - conical spiral leveling device for rapid loading of coke trucks includes the following steps:

[0015] 1) Before coke loading, the double - conical spiral scraper assembly is in the initial position higher than the maximum height of the truck; the truck travels to the initial coking - receiving position below the coke bin.

[0016] 2) After coke loading starts, the main controller of the rapid loading system sends a signal to start the coke - discharging gate to the coke leveling main controller; the coke leveling main controller controls the electro - hydraulic push rod to start, causing the double - conical spiral scraper assembly to fall as a whole.

[0017] 3) After the double - conical spiral scraper assembly reaches the set scraping height, that is, the lower limit position of the limit switch, the coke leveling main controller controls the electro - hydraulic push rod to stop moving; at the same time, it controls the driving device to start, driving the conical spiral scraper and the small conical spiral to rotate synchronously.

[0018] 4) The speedometer sends the monitored moving speed of the truck to the coke leveling main controller, and the coke leveling main controller adjusts the output speed of the driving device according to the preset parameters, that is, adjusts the rotation speeds of the double - conical spiral scraper and the small conical spiral.

[0019] 5) During the loading process, the rangefinder continuously monitors the distance between the double - conical spiral leveling device and the carriage tailboard, and immediately feeds back to the coke leveling main controller when the set value is reached.

[0020] 6) After receiving the feedback from the rangefinder, the coke leveling main controller immediately controls the driving device to stop moving, and starts the electro - hydraulic push rod to lift the double - conical spiral scraper assembly as a whole. It stops after reaching the upper limit position of the limit switch, that is, the initial position; the coke leveling operation during the loading process ends.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1) Adopt a double-cone spiral scraper structure that is thick in the middle and thin at both ends, which can well adapt to the characteristics of the coke distribution during the rapid loading of coke trucks (the material surface is high at the middle of the carriage's blanking point and gradually transitions to the lower parts on both sides of the carriage), so as to quickly level the coke material surface in the carriage;

[0023] 2) The conical spiral scraper can avoid excessive pushing and cutting of coke. By reasonably matching the rotation speed of the conical spiral scraper with the running speed of the truck during loading, the effect that there is no moving friction between the coke and the conical spiral scraper along the forward direction of the vehicle can also be achieved, which can avoid the coke breakage caused by the leveling process to the greatest extent;

[0024] 3) A small conical spiral is arranged at the outer end of the conical spiral scraper of the double-cone spiral scraper assembly. While leveling the coke, a supplementary coke feeding trough is opened. After the coke is loaded and weighed in the truck, coke is fed into the supplementary coke feeding trough through the supplementary coke pipe. After the coke is fed, the material surface in the carriage remains flat, and the subsequently fed coke is not easy to spill, which is beneficial for further capping treatment. Description of the Drawings

[0025] Figure 1 is the front view of the double-cone spiral leveling device described in the present invention.

[0026] Figure 2 is the front view of the double-cone spiral scraping knife assembly described in the present invention.

[0027] Figure 3 is the schematic diagram of the use state of the double-cone spiral leveling device described in the present invention.

[0028] Figure 4 is the control system block diagram of the double-cone spiral leveling device described in the present invention.

[0029] In the figure: 1. Loading platform 2. Suspension bracket 3. Double-cone spiral scraper assembly 31. Plow flat head 32. Driving device 33. Conical spiral scraper 34. Small conical spiral 4. Auxiliary suspension cable 5. Truck 6. Coke 7. Electro-hydraulic push rod 8. Limit switch 9. Rangefinder 10. Main flat coke controller 11. Coke bin 12. Coke discharge gate 13. Coke discharge chute 14. Chute angle adjustment device Detailed Embodiments

[0030] The following further describes the detailed embodiments of the present invention in conjunction with the drawings:

[0031] Such as Figures 1 - 3As shown in the figure, a double - conical spiral leveling device for rapid loading of coke trucks includes a suspension hanger 2, an electro - hydraulic push rod 7, and a double - conical spiral scraper assembly 3. The double - conical spiral scraper assembly 3 consists of a middle box body, a plow flat head 31, a conical spiral scraper 33, and a driving device 32. The middle box body is suspended below the cross - beam of the loading platform 1 through the suspension hanger 2. The top of the suspension hanger 2 is hinged to the cross - beam, and the middle of the suspension hanger 2 is hinged to the extended end of the electro - hydraulic push rod 7. Under the action of the electro - hydraulic push rod 7, the double - conical spiral scraper assembly 3 can rotate integrally around the top hinge point, thus realizing the lifting action. The driving device 32 is arranged inside the middle box body. One set of conical spiral scrapers 33 is respectively arranged on both sides of the middle box body. The inner end of the conical spiral scraper 33 is connected to the driving device 32 and can rotate around the axis driven by the driving device 32. The inner - end spiral diameter of the conical spiral scraper 33 is larger than the outer - end spiral diameter. A plow flat head 31 is arranged at one end of the middle box body. The plow flat head 31 is a wedge - shaped structure protruding outward in the middle. The bottom surface of the plow flat head 31 and the bottom surface of the conical spiral scraper 33 are in the same plane.

[0032] Furthermore, the driving device 32 is a double - output - shaft reduction motor.

[0033] Furthermore, a small conical spiral 34 is also arranged at the outer end of the conical spiral scraper 33. The bottom surface of the small conical spiral 34 is a plane, and the bottom surface of the small conical spiral 34 is lower than the bottom surface of the conical spiral scraper 33.

[0034] Furthermore, a hanging point is arranged on the connecting shaft between the small conical spiral 34 and the conical spiral scraper 33, and it is connected to the cross - beam of the loading platform 1 through an auxiliary suspension cable 4.

[0035] Furthermore, as Figures 2 - 4 shown in the figure, the double - conical spiral leveling device for rapid loading of coke trucks of the present invention also includes a coke - leveling control system. The coke - leveling control system consists of a coke - leveling main controller 10, a distance measuring instrument 9, a speed measuring instrument, and a limit switch 8. The distance measuring instrument 9 is arranged above the plow flat head 31 and is used to monitor the distance between the double - conical spiral leveling device and the tailboard of the truck 5 carriage. The speed measuring instrument is arranged at the bottom of the coke bunker 11 and is used to monitor the moving speed of the truck 5 during loading. The limit switch 8 is arranged outside the extended end of the electro - hydraulic push rod 7 and is used to monitor the lifting height of the double - conical spiral scraper assembly 3. The signal output ends of the distance measuring instrument 9, the speed measuring instrument, and the limit switch 8 are connected to the coke - leveling main controller 10. The control ends of the driving device 32 and the electro - hydraulic push rod 7 are connected to the coke - leveling main controller 10. The coke - leveling main controller 10 is also connected to the main controller of the rapid loading system.

[0036] The control method of the double - conical spiral leveling device for rapid loading of coke trucks of the present invention includes the following steps:

[0037] 1) Before loading coke, the double-conical spiral scraper assembly 3 is in an initial position higher than the maximum height of the car 5; the car 5 drives to the initial position for receiving coke below the coke silo 11;

[0038] 2) After the coke loading starts, the main controller of the rapid loading system sends a start signal of the coke release gate 11 to the coke leveling main controller 10; the coke leveling main controller 10 controls the electro-hydraulic push rod 7 to start, so that the double-conical spiral scraper assembly 3 falls as a whole;

[0039] 3) After the double-conical spiral scraper assembly 3 reaches the set scraping height, i.e., the lower limit position of the limit switch 8, the flat-focus main controller 10 controls the electro-hydraulic push rod 7 to stop moving; at the same time, the driving device 32 is controlled to start, driving the conical spiral scraper 33 and the small conical spiral 34 to rotate synchronously;

[0040] 4) The speedometer sends the monitored speed of the car 5 to the flat-focus main controller 20, and the flat-focus main controller 20 adjusts the output speed of the driving device 32 according to the preset parameters, that is, adjusts the speed of the double-conical spiral scraper 33 and the small conical spiral 34;

[0041] 5) During the loading process, the distance meter 9 monitors the distance between the double-conical spiral scraping device and the tail plate of the carriage in real time, and immediately feeds back to the flat-focus main controller 10 when it reaches the set value;

[0042] 6) After receiving the feedback from the rangefinder 9, the focus-paring main controller 10 immediately controls the driving device 32 to stop moving, and starts the electro-hydraulic push rod 7 to lift the double-conical spiral scraper assembly 3 as a whole, and stops after reaching the upper limit position of the limit switch 8, i.e., the initial position; the focus-paring operation during the loading process is completed.

[0043] The double-conical spiral scraping device for rapid loading of coke trucks described in the present invention is a scraping device that is compatible with the existing rapid loading system of coke trucks. The rapid loading system of coke trucks includes a coke silo 11, which is arranged on a loading platform 1. A coke discharge gate 12 is arranged at the coke outlet at the bottom of the coke silo 11; the coke discharge gate 12 is connected to a coke discharge chute 13 below. After the coke discharge gate 12 is opened, the coke in the coke silo 11 enters the car 5 through the coke discharge chute 13; while the coke is discharged, the car 5 moves at a uniform speed, so that the coke is quantitatively and evenly distributed in the car longitudinally. The coke discharge chute 13 is usually also provided with a chute angle adjustment device 14 to meet the requirements of different car compartments and coke discharge heights.

[0044] Along the moving direction of the car 5 during loading, the double-conical spiral scraping device of the present invention is arranged at the bottom of the coke silo 11 and downstream of the coke discharge chute 13.

[0045] The double-conical spiral scraper assembly 3 is a symmetrical structure, with a middle box body disposed at the lower end of the hanger 2, and a group of conical spiral scrapers 33 are symmetrically disposed on both sides of the middle box body. The plowing head 31 is disposed in front of the middle box body (facing the direction of the coke to be leveled). The inner end of the conical spiral scraper 33 is thick and the outer end is thin, and the bottom surface of the conical spiral scraper 33 is flush with the bottom surface of the plowing head 31, so that the coke material surface after passing through the double-conical spiral scraper assembly 3 is flat.

[0046] The driving device 32 is arranged in the middle box behind the plowing head 31. The driving device 32 is preferably a double-output shaft reduction motor, and its two side output shafts are respectively connected to the corresponding conical spiral scrapers 33 for transmission, which can ensure that the conical spiral scrapers 33 on both sides rotate synchronously.

[0047] One end of the electro-hydraulic push rod 7 is fixed on the loading platform 1 below the coke silo 11, and the other end is hinged to the middle of the hanger 2. The top of the hanger 2 is hinged to the crossbeam of the loading platform 1 through a bearing support. When the electro-hydraulic push rod 7 is actuated, the hanger 2 swings around the rotating shaft in the bearing support, and at the same time drives the double-conical spiral scraper assembly 3 to rise and fall as a whole. The hanger 2 is preferably a telescopic sleeve structure, and the length is adjustable.

[0048] The limit switch 8 is arranged on the outer side of the extended end of the hydraulic push rod 7. The distance meter 9 is installed above the plow head 31. The speed meter is installed at the bottom of the coke silo 11. The coke leveling main controller 10 is located in the main control room of the fast loading system. When controlling the coke leveling operation, the rotation speed of the conical spiral scraper 33 is positively correlated with the travel speed of the car 5 during loading.

[0049] A small conical spiral 34 is provided at the outer end of the conical spiral scraper 33, which opens a coke replenishment trough while scraping the coke flat. After the coke is loaded and weighed, the coke is replenished into the coke replenishment trough 34 through the coke replenishment pipe. After the coke replenishment, the material surface in the carriage remains flat, the replenished coke is not easy to fall off, and it is conducive to further sealing processing.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A double-conical spiral scraping device for rapid loading of coke trucks, characterized in that: It includes a hanger, an electro-hydraulic push rod and a double-conical spiral scraper assembly; the double-conical spiral scraper assembly consists of a middle box, a plow head, a conical spiral scraper and a driving device; the middle box is suspended under the crossbeam of the loading platform through the hanger, the top of the hanger is hinged to the crossbeam, and the middle of the hanger is hinged to the protruding end of the electro-hydraulic push rod. Under the action of the electro-hydraulic push rod, the double-conical spiral scraper assembly can rotate around the top hinge point as a whole, thereby realizing the lifting action; the driving device is arranged in the middle box, and a group of conical spiral scrapers are respectively arranged on both sides of the middle box, the inner ends of the conical spiral scrapers are connected to the driving device, and can rotate around the axis under the drive of the driving device; the inner end spiral diameter of the conical spiral scraper is larger than the outer end spiral diameter; a plow head is arranged at one end of the middle box, and the plow head is a wedge-shaped structure protruding outward from the middle; the bottom surface of the plow head and the bottom surface of the conical spiral scraper are in the same plane.

2. A double-conical spiral scraping device for rapid loading of coke trucks according to claim 1, characterized in that: The driving device is a double-output shaft reduction motor.

3. A double-conical spiral scraping device for rapid loading of coke trucks according to claim 1, characterized in that: The outer end of the conical spiral scraper is also provided with a small conical spiral, the bottom surface of the small conical spiral is a plane, and the bottom surface of the small conical spiral is lower than the bottom surface of the conical spiral scraper.

4. A double-conical spiral scraping device for rapid loading of coke trucks according to claim 3, characterized in that: A hanging point is arranged on the connecting shaft between the small conical spiral and the conical spiral scraper, and is connected with the crossbeam of the loading platform through an auxiliary hanging rope.

5. A double-conical spiral scraping device for rapid loading of coke trucks according to claim 1, characterized in that: It also includes a coke leveling control system; the coke leveling control system is composed of a coke leveling main controller, a distance meter, a speed meter and a limit switch; the distance meter is arranged above the plow leveling head, and is used to monitor the distance between the double-conical spiral scraping device and the tail plate of the car compartment; the speed meter is arranged at the bottom of the coke silo, and is used to monitor the moving speed of the car during loading; the limit switch is arranged outside the extended end of the electro-hydraulic push rod, and is used to monitor the lifting height of the double-conical spiral scraper assembly; The signal output ends of the rangefinder, speedometer and limit switch are connected to the flat-focus main controller, and the control ends of the drive device and the electro-hydraulic push rod are connected to the flat-focus main controller; the flat-focus main controller is also connected to the main controller of the rapid loading system.

6. The control method of the double-conical spiral scraping device for rapid loading of coke trucks according to any one of claims 1 to 5, characterized in that: The steps include: 1) Before loading coke, the double-conical spiral scraper assembly is in the initial position higher than the maximum height of the car; the car drives to the initial position of receiving coke under the coke silo; 2) After the coke loading starts, the main controller of the rapid loading system sends a start signal of the coke release gate to the coke leveling main controller; the coke leveling main controller controls the electro-hydraulic push rod to start, so that the double-conical spiral scraper assembly falls as a whole; 3) After the double-conical spiral scraper assembly reaches the set scraping height, i.e., the lower limit position of the limit switch, the flat-focus main controller controls the electro-hydraulic push rod to stop moving; at the same time, the control drive device starts, driving the conical spiral scraper and the small conical spiral to rotate synchronously; 4) The speedometer sends the monitored vehicle speed to the flat-focus main controller, which adjusts the output speed of the drive device according to the pre-set parameters, that is, adjusts the speed of the double-conical spiral scraper and the small conical spiral; 5) During the loading process, the distance meter monitors the distance between the double-conical spiral scraping device and the tail plate of the carriage in real time, and immediately feeds back to the flat-focus main controller when it reaches the set value; 6) After receiving the feedback from the rangefinder, the main controller for focus flattening immediately controls the driving device to stop moving, and starts the electro-hydraulic push rod to lift the double-conical spiral scraper assembly as a whole, and stops after reaching the upper limit position of the limit switch, i.e., the initial position; the focus flattening operation during the loading process is completed.

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