A dual-mode switching coal unloading operation method of a dumper

Abstract

The application discloses a kind of dumper dual-mode switching coal unloading operation methods, and the dumper is the standard car mode when unloading coal to standard car type, and the dumper is switched to K car mode when unloading coal to ballast hopper car, and ballast hopper car is simply referred to as K car;The lower part of the dumper is provided with a coal outlet, and the position of the coal outlet is opposite to the bottom door of the K car;When the dumper is switched to K car mode, the coal outlet is opened, the K car is moved into the dumper, the bottom door is opened, the car plate is leaned out to the side wall of the K car, the vibrator on the car plate vibrates the side wall of the K car, the coal in the bottom door leaks into the coal outlet, and the coal is unloaded;After the K car unloads coal, observe whether there is a coal shed phenomenon, if there is a coal shed phenomenon, the dumper drives the K car to shake within a certain angle range, and the vibrator continues to vibrate during the shaking process of the K car.The application enables the dumper to switch between two modes, and unloads the standard car and the K car respectively.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dumper, in particular to a dumper dual-mode switching coal unloading operation method. BACKGROUND

[0002] The dumper system is composed of a dumper, a heavy regulator, a track device, an air conditioner and a track device, a car moving platform, a wheel clamp, a water spraying dust removal device, a stopper and the like. In order to facilitate description, the empty car parked in the dumper in the previous working cycle is numbered as No. 1 car, and the car to be unloaded is No. 2 car, and the car connected with No. 2 car is No. 3 car.

[0003] A working cycle of the dumper and the shunting equipment is as follows: the heavy regulator pulls the whole train to slowly move forward, places the four wheels of the front bogie of No. 3 car in the working range of the wheel clamp, opens the car coupler of No. 2 and No. 3 cars by manual hooking, and clamps the wheel clamp; the heavy regulator pulls No. 2 car to move forward and connect with No. 1 car; the heavy regulator positions No. 2 car in the dumper, automatically uncouples the heavy regulator and No. 2 car, and pushes No. 1 car to position in the car moving platform; at the same time, the dumper turns over and then returns to the original position; the heavy regulator automatically uncouples the heavy regulator and No. 1 car, the car moving platform moves forward to the empty car line and is aligned with the empty car line; at the same time, the heavy regulator arm is lifted and returns to the positioning point at high speed; the air conditioner pushes the empty car out of the car moving platform and gathers into a train on the empty car line, and the car moving platform returns to the heavy car line; the heavy regulator arm is lowered, and then the heavy regulator is connected with the front coupler of No. 3 car at low speed. Thus, a working cycle is completed.

[0004] K-type car is a stone ballast hopper car. The stone ballast hopper car is a special hopper car, mainly used for laying stone ballast during new railway line construction and maintenance or for loading and transporting bulk cargo in industrial and mining enterprises, and has the functions of unloading while walking and unloading to the inside and outside of the track. At present, the stone ballast hopper cars in China mainly include K13 series stone ballast hopper cars with a load of 60t, KZ70 series stone ballast hopper cars with a load of 70t, and KZ80(H, F) type stone ballast hopper cars with a load of 80t. The discharge port of the stone ballast hopper car is at the bottom of the car body.

[0005] In the prior art, only 2 people are needed to monitor the C-type dumper when the standard car type (C60 / C70 car type) is turned over, and the carriages are disassembled and connected. However, due to the different car types, when the K-type car is unloaded on the C-type dumper, 5 people are needed to manually operate the heavy regulator, air conditioner, car moving platform and other single machine equipment. The interlocking protection is insufficient, the safety risk is extremely high, and the labor and material resources are occupied. Therefore, a dumper dual-mode switching coal unloading operation method is needed, which can simultaneously unload the two types of cars. SUMMARY

[0006] Purpose of the invention: In order to overcome the shortcomings of the existing technology, the present invention provides a method for unloading coal in a dual-mode switching tipper, which enables the tipper to switch between two modes to unload standard cars and K-type cars respectively.

[0007] Technical Solution: To achieve the above objectives, the present invention provides a dual-mode switching coal unloading operation method for a tipper. When unloading coal from a standard car model, the tipper operates in standard car mode; when unloading coal from a ballast hopper car, it switches to K-type car mode, and the ballast hopper car is referred to simply as a K-type car. The tipper has a coal discharge port at its lower part, positioned opposite the bottom door of the K-type car. When the tipper switches to K-type car mode, the coal discharge port opens. After the K-type car moves into the tipper, the bottom door opens, and the car platform extends to the side wall of the K-type car. A vibrator on the car platform vibrates the side wall of the K-type car, causing coal to leak from the bottom door into the coal discharge port, thus achieving coal unloading.

[0008] Furthermore, after the K-type car unloads coal, observe whether coal bridging occurs. If coal bridging occurs, the tipper will cause the K-type car to shake within a certain angle range, and the vibrator will continuously vibrate during the shaking of the K-type car.

[0009] Furthermore, the tipper has a car-supporting plate on one side. The tipper drives the K-type car to flip over at a certain angle towards the car-supporting plate and then rotates back and forth. During the flipping and reversing process, the K-type car is kept tilted towards the car-supporting plate. After the tipper finishes the flipping action, the K-type car returns to a horizontal state.

[0010] Furthermore, during the process of the tipper driving the K-type car to reciprocate, the bottom door of the K-type car, which is close to the side of the car platform, is kept directly above the coal outlet, so that the coal leaking from the bottom door falls into the coal outlet under the action of gravity.

[0011] Furthermore, before the tipper causes the K-type car to shake, the pressure beam on the tipper presses down on the K-type car to fix it in place.

[0012] Further, the full load K-type car is called K-type heavy car, the empty load K-type car is called K-type empty car, the car dumper executes K-type car mode including the following steps: step S1: the K-type heavy car stops on the heavy car line, the rear hook of the heavy regulator is connected with the K-type heavy car, and the K-type heavy car is pulled forward; when the first K-type heavy car enters the car dumper, the second K-type heavy car is braked at the wheel clamp, and the wheel clamp clamps the wheels of the second K-type heavy car; step S2: the second K-type heavy car is disconnected with the first K-type heavy car, the heavy regulator pulls the first K-type heavy car to continue to advance, is braked at the turning-off position in the car dumper, and is disconnected; step S3: the heavy regulator leaves the car dumper, opens the bottom door of the first K-type heavy car, leans against the side wall of the first K-type heavy car on the leaning plate, and opens the vibrator on the leaning plate to vibrate; step S4: whether the first K-type heavy car appears the shed coal phenomenon is observed, if not, directly enters the next step; if yes, the car beam is pressed on the first K-type heavy car, the car dumper drives the second K-type heavy car to swing back and forth in a certain angle range, and the vibrator continuously vibrates in the process of the car body swinging; step S5: the heavy regulator returns to be connected with the second K-type heavy car, and pulls the second K-type heavy car forward; when the second K-type heavy car approaches the car dumper, the speed is reduced, the front hook of the heavy regulator is connected with the first K-type empty car in the car dumper, and then the second K-type heavy car continues to advance; when the second K-type heavy car reaches the turning-off position in the car dumper, the rear hook is disconnected, and the heavy regulator pushes the first K-type empty car to leave; step S6: the car dumper unloads coal for the second K-type heavy car; the heavy regulator disconnects the first K-type empty car after positioning the first K-type empty car on the car moving platform, and then the heavy regulator returns to carry out the shunting operation for the third K-type heavy car; step S7: the car moving platform drives the first K-type empty car to move to the empty car line and stop stably, and the air regulator pushes the first K-type empty car to the empty car line; then the air regulator returns to the starting position, and the car moving platform returns to the car dumper; step S8: steps S1 to S7 are repeated until the whole K-type heavy car is unloaded completely, at this time, the K-type empty car after unloading coal is gathered on the empty car line, and waits for the locomotive to pull out of the factory.

[0013] Further, the lower coal outlet is a closable lower coal outlet; in the K-type car mode, the lower coal outlet is opened; and in the standard car mode, the lower coal outlet is closed.

[0014] Further, one side of the leaning plate, which is attached to the side wall of the car body, is a leaning plate, and the leaning plate is provided with a groove; the vibrator includes a vibrating plate arranged in the groove, and the vibrating plate can perform the actions of extending out of the groove and retracting into the groove to vibrate the side wall of the car body.

[0015] Further, the car dumper system program is divided into two sets of system operation, and a switch for switching between the K-type car mode and the standard car mode is arranged on the operation box of the car dumper, so that the car dumper is switched to the corresponding system program in the two modes.

[0016] Further, a safety belt hook is arranged on the top of the car dumper.

[0017] Beneficial effects: The dual-mode switching coal unloading operation method of the tippler of the present invention has the following beneficial effects:

[0018] 1) The tipper can switch between standard car mode and K-type car mode to receive and unload coal for standard car and ballast hopper cars respectively; in standard car mode, the tipper tilts and unloads normally; in K-type car mode, the coal outlet opens, the car plate is pushed against the side wall of the K-type car, and the vibrator vibrates the K-type car, so that the coal falls from the bottom door of the K-type car into the coal outlet, thus realizing coal unloading;

[0019] 2) Because the K-type car has a bottom-opening door, it is more prone to coal bridging during unloading compared to the standard car. When coal bridging occurs, the tipper causes the K-type car to shake within a certain angle range, and the vibrator continuously vibrates during the shaking of the K-type car. The shaking of the car and the vibration of the vibrator promote the falling of coal. Attached Figure Description

[0020] Appendix Figure 1 This is a schematic diagram of a tippler unloading a K-type car. Detailed Implementation

[0021] The invention will now be further described with reference to the accompanying drawings.

[0022] As attached Figure 1 The aforementioned method for dual-mode switching coal unloading operation of a tipper includes a tipper 1. When unloading coal from a standard car model, the tipper 1 operates in standard car mode. When unloading coal from a ballast hopper car, the tipper 1 switches to K-type car mode. The K-type car is the ballast hopper car. For ease of description, the ballast hopper car will be referred to as the K-type car in the following text.

[0023] Below the tippler 1 is the coal receiving area. The tippler 1 has a coal discharge port 2 at its lower part, and a car-supporting plate 4 with a vibrator 5 mounted on it. When the K-type car moves to the unloading position inside the tippler 1, the coal discharge port 2 is positioned opposite the bottom door 3 of the K-type car. When the tippler 1 switches to K-type car mode, the coal discharge port 2 opens. After the K-type car moves into the tippler 1, the bottom door 3 of the K-type car opens, and the car-supporting plate 4 extends to the side wall of the K-type car. The vibrator 5 on the car-supporting plate 4 vibrates the side wall of the K-type car. Under the influence of gravity and the vibration of the vibrator 5, the coal inside the K-type car leaks out from the bottom door 3, flowing into the coal discharge port 2 and then falling into the coal receiving area below the tippler 1, thus unloading the coal.

[0024] Because the coal outlet of the K-type car is located at the bottom of the car body, coal bridging is prone to occur during unloading, preventing the coal from being completely unloaded. In this situation, having workers climb to the top of the car body to clear the coal is not only labor-intensive and inefficient, but also poses a risk of falls. Therefore, after unloading, the K-type car is observed for bridging. If bridging occurs, the tipper 1 causes the K-type car to sway within a certain angle range, and the vibrator 5 continuously vibrates during this swaying motion. Compared to vibrating a car body that is stationary, vibrating a swaying car body makes it easier to dislodge the bridging coal. The swaying itself also helps to resolve the bridging issue, eliminating the need for manual climbing to the top of the car body to clear the coal, thus improving unloading efficiency. The top of the tipper 1 is equipped with a safety belt hook. In special circumstances, when the coal bridging phenomenon is severe, the shaking of the car body and the cooperation of the vibrator 5 cannot shake the coal off, and personnel still need to go to the top of the car body to pry the coal off. At this time, the safety belt hook makes it convenient for the operators to attach their safety belts to ensure the safety of the operators.

[0025] The tipper 1 of this invention is a C-type tipper 1, with a car-side plate 4 on one side. When coal bridging occurs, the tipper 1 drives the K-type car to rotate a certain angle towards the car-side plate 4, and then rotates back a certain angle, repeating this process, thus causing the K-type car to sway back and forth. During the rotating and reciprocating process, the tipper 1 does not drive the K-type car back to a horizontal state when rotating back, keeping the K-type car tilted towards the car-side plate 4, so that the coal in the car body leaks out from the bottom opening 3 on the side closer to the car-side plate 4, and never from the bottom opening 3 on the side farther from the car-side plate 4. If the tipper 1 rotates back to a horizontal state, some coal will leak out from the bottom opening 3 on the side farther from the car-side plate 4. When the car body rotates from a horizontal state towards the car-side plate 4 again, the bottom opening 3 on the side farther from the car-side plate 4 cannot be vertically aligned with the coal outlet 2, causing the coal to spill out. Therefore, during the shaking process, the K-type car should be kept tilted towards the side of the car platform 4, and after the tipper 1 finishes its tipping action, the K-type car should be returned to a horizontal state.

[0026] During the reciprocating tilting of the K-type car driven by the tipper 1, there are certain requirements for the tilting angle. The tilting angle must ensure that the bottom door 3 on the side of the K-type car closest to the car platform 4 is directly above the coal outlet 2, so that the coal leaking from the bottom door 3 falls into the coal outlet 2 under the action of gravity. The specific tilting angle needs to be determined based on the actual size of the coal outlet 2. Generally speaking, the tilting angle will not exceed 45 degrees.

[0027] Before the tipper 1 causes the K-type car to shake, the pressure beam 6 on the tipper 1 presses down on the K-type car to fix it in place, preventing the K-type car from derailing during the tipper 1's back and forth rotation, and ensuring the stability of the K-type car.

[0028] The present application adds K-type car mode to the dumper 1, and divides the dumper 1 system program into two sets of system operation. A K-type car mode and standard car mode switch is arranged on the operation box of the dumper 1, so that the dumper 1 is switched to the corresponding system program in the two modes. In order to visually distinguish the operation modes, an audible and light alarm is installed. When the alarm is activated, it is the K-type car loading and unloading operation mode.

[0029] During loading and unloading, the K-type car mode and standard car mode switch on the dumper 1 is adjusted according to the type of car to be loaded or unloaded. A K-type car loaded with coal is called K-type heavy car, and a K-type car without load is called K-type empty car. When the switch is switched to K-type car mode, the dumper 1 executes K-type car mode, which includes the following steps:

[0030] Step S1: The K-type heavy car stops on the heavy car line; the heavy shifter, i.e. the heavy car shifter, lowers its shunting arm, the rear hook of the heavy shifter is coupled with the K-type heavy car, and the heavy shifter positions the K-type heavy car on the migration platform and then pulls it forward; when the first K-type heavy car enters the dumper 1, the second K-type heavy car is braked at the wheel clamp, and the wheel clamp clamps the wheels of the second K-type heavy car;

[0031] Step S2: The second K-type heavy car is uncoupled from the first K-type heavy car by manual operation, the heavy shifter continues to pull the first K-type heavy car forward, and when it reaches the unloading position in the dumper 1, it is braked and uncoupled;

[0032] Step S3: The heavy shifter leaves the dumper 1, opens the bottom door 3 of the first K-type heavy car, and positions the car plate 4 on the side wall of the first K-type heavy car, and opens the rapping device 5 on the car plate 4 to rattle, so that the coal in the car body falls from the bottom door 3 and the coal outlet 2 into the coal receiving area below the dumper 1; in this step, the dumper 1 does not perform the dumper action, and the car pressing beam 6 does not perform the car pressing action;

[0033] Step S4: Observe whether there is a coal shelf phenomenon in the first K-type heavy car. If not, proceed to the next step; if so, press the car pressing beam 6 on the first K-type heavy car, and the dumper 1 swings the second K-type heavy car back and forth within a certain angle range, and the rapping device 5 continues to rattle during the car body swinging, so as to shake off the coal with the coal shelf phenomenon;

[0034] Step S5: The shunting arm of the heavy shifter is lifted, and the heavy shifter returns to be coupled with the second K-type heavy car and pulls it forward; when the second K-type heavy car approaches the dumper 1, it is slowed down, the front hook of the heavy shifter is coupled with the first K-type empty car in the dumper 1, and then it continues to advance; when the second K-type heavy car reaches the unloading position in the dumper 1, it is braked, the rear hook is uncoupled, and the heavy shifter pushes the first K-type empty car away;

[0035] Step S6: The dumper 1 unloads the second K-type heavy car; the heavy shunting engine pushes the first K-type empty car to the position on the car moving platform, hooks off, and then the heavy shunting engine returns to shunt the third K-type heavy car;

[0036] Step S7: The car moving platform drives the first K-type empty car to the empty car line to stop, the air shunting engine pushes the first K-type empty car to the empty car line, and then the air shunting engine returns to the starting position, and the car moving platform returns to the dumper 1 end;

[0037] Step S8: Repeat steps S1 to S7 to unload the subsequent cars until the K-type heavy car is completely unloaded, at which time the K-type empty car after unloading is gathered on the empty car line, waiting for the locomotive to pull out of the factory.

[0038] The standard car full of coal is called a standard heavy car, and the standard empty car is called a standard empty car. When the switch is switched to the standard car mode, the dumper 1 executes the standard car mode, including the following steps:

[0039] Step T1: The standard heavy car stops on the heavy car line; the heavy shunting engine, i.e. the heavy car shunting engine, lowers the shunting arm, the rear hook of the heavy shunting engine is connected to the standard heavy car, and the heavy shunting engine is positioned on the car moving platform to pull the standard heavy car forward; when the first standard heavy car enters the dumper 1, the second standard heavy car is braked at the wheel clamp, and the wheel clamp clamps the wheels of the second standard heavy car;

[0040] Step T2: The second standard heavy car is manually hooked off from the first standard heavy car, the heavy shunting engine pulls the first standard heavy car to continue to advance, and stops at the unloading position in the dumper 1 to be hooked off;

[0041] Step T3: The heavy shunting engine leaves the dumper 1, the dumper 1 starts to rotate, and the first standard heavy car is unloaded;

[0042] Step T4: The shunting arm of the heavy shunting engine is raised, the heavy shunting engine returns to connect with the second standard heavy car and pulls the second standard heavy car forward; when the second standard heavy car approaches the dumper 1, the speed is reduced, the front hook of the heavy shunting engine and the first standard empty car in the dumper 1 are hooked, and then the heavy shunting engine continues to advance; when the second standard heavy car reaches the unloading position in the dumper 1, the rear hook is hooked off, and the heavy shunting engine pushes the first standard empty car away;

[0043] Step T5: The dumper 1 rotates to unload the second standard heavy car; the heavy shunting engine pushes the first standard empty car to the position on the car moving platform, hooks off, and then the heavy shunting engine returns to shunt the third standard heavy car;

[0044] Step T6: The car moving platform drives the first standard empty car to the empty car line to stop, and the air shunting engine pushes the first standard empty car to the empty car line; then the air shunting engine returns to the starting position, and the car moving platform returns to the dumper 1 end;

[0045] Step T7: Repeat steps T1 to T6 to unload the subsequent cars until all standard loaded cars in the train are unloaded. At this time, the standard empty cars after unloading coal are gathered on the empty car line, waiting for the locomotive to pull them out of the factory.

[0046] In this invention, in the K-type vehicle mode, the repositioning machine uses an encoder to locate loaded and empty vehicles, and the position is changed according to the length of the K-type vehicle. The parking position is different from that of the standard vehicle.

[0047] In this invention, the K-type car mode has an automatic operation mode. In automatic operation mode, the car-mounting plate 4 can automatically move out and release. If the car-mounting plate 4 moves out during the car-moving process of the rebalancing machine, the rebalancing machine will interlock and stop operation. In the K-type car mode, the car-mounting plate 4 can be manually moved out and released, and the vibrator 5 of the car-mounting plate 4 can be activated. During operation, it is important to note that if the car-mounting plate 4 moves out during the car-moving process of the rebalancing machine, the rebalancing machine will interlock and stop operation. The car-mounting plate 4 should only be operated to move the car after confirming that the rebalancing machine has stably parked the loaded car body on the tipper 1 body, disconnected the coupler, and driven out of the tipper 1 body area, to avoid safety accidents.

[0048] After the empty car is in place at the transfer platform, a four-axle bypass is used for detection. The four-axle bypass counts the number of times the photoelectric sensor switch is activated four times to determine the passage of a car. The sensing distance of the photoelectric switch is adjustable to avoid the situation where it does not work due to insufficient distance.

[0049] In this invention, the coal discharge port 2 is an openable and closable coal discharge port. In K-type car mode, the coal discharge port 2 is open, allowing coal to fall from the coal discharge port 2 into the coal receiving area below the tipper 1. In standard car mode, or when the tipper 1 is not unloading, the coal discharge port 2 is closed to prevent personnel from falling through the opening.

[0050] The side of the back panel 4 that is in contact with the side wall of the vehicle body is called the back panel. A groove is provided on the back panel. The vibrator 5 includes a vibrating plate disposed in the groove. A telescopic drive mechanism is provided in the back panel 4. Under the drive of the telescopic drive mechanism, the vibrating plate can extend out of the groove and retract into the groove to vibrate the side wall of the vehicle body.

[0051] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for switching a dumper to a dual mode for unloading coal, characterized in that: The dumper (1) is in standard car mode when discharging coal from standard cars, and is switched to K car mode when discharging coal from stone hopper cars, and the stone hopper car is referred to as K car; The lower part of the dumper (1) is provided with a coal discharge port (2), and the position of the coal discharge port (2) is opposite to the bottom door (3) of the K car; when the dumper (1) is switched to K car mode, the coal discharge port (2) is opened, the K car is moved into the dumper (1), the bottom door (3) is opened, the car plate (4) is leaned out to the side wall of the K car, the vibrator (5) on the car plate (4) vibrates the side wall of the K car, the coal in the bottom door (3) is discharged into the coal discharge port (2), and the coal is discharged; After the K car is discharged, whether there is coal shed phenomenon is observed, if there is coal shed phenomenon, the dumper (1) drives the K car to shake within a certain angle range, and the vibrator (5) continuously vibrates during the shaking of the K car; The dumper (1) is in standard car mode when discharging coal from standard cars, and is switched to K car mode when discharging coal from stone hopper cars, and the stone hopper car is referred to as K car; 2. The dual mode switching coal unloading operation method of a dumper according to claim 1, characterized in that: During the reciprocating turning of the dumper (1) with the K car, the bottom door (3) of the K car close to the car plate (4) side is maintained in the range directly above the coal discharge port (2), so that the coal in the bottom door (3) falls into the coal discharge port (2) under the action of gravity.

3. The dual mode switching coal unloading operation method of a dumper as claimed in claim 2, wherein: Before the dumper (1) drives the K car to shake, the car pressing beam (6) on the dumper (1) is pressed on the K car to fix the K car.

4. The dual mode switching coal unloading operation method of a roll-off car according to claim 3, characterized in that: The full load K car is referred to as K heavy car, and the empty load K car is referred to as K empty car, and the dumper (1) executes K car mode including the following steps: Step S1: the K heavy car is stopped on the heavy car line, the rear hook of the heavy regulator is connected with the K heavy car, and the K heavy car is pulled forward; when the first K heavy car enters the dumper (1), the second K heavy car is braked at the wheel clamp, and the wheel clamp clamps the wheels of the second K heavy car; Step S2: the second K heavy car is disconnected with the first K heavy car, the heavy regulator pulls the first K heavy car to continue to move forward, is braked when reaching the turning and discharging position in the dumper (1), and is disconnected; Step S3: the heavy regulator leaves the dumper (1), the bottom door (3) of the first K heavy car is opened, the car plate (4) is leaned out to the side wall of the first K heavy car, and the vibrator (5) on the car plate (4) is opened to vibrate; Step S4: whether there is coal shed phenomenon in the first K heavy car is observed, if not, the next step is directly entered; if yes, the car pressing beam (6) is pressed on the first K heavy car, the dumper (1) drives the second K heavy car to shake within a certain angle range, and the vibrator (5) continuously vibrates during the shaking of the car body; Step S5: the heavy regulator returns to the second K-type heavy vehicle and pulls the second K-type heavy vehicle forward; when the second K-type heavy vehicle approaches the dumper (1), it slows down, the front hook of the heavy regulator hooks the first K-type empty vehicle in the dumper (1), and then continues to move forward; when the second K-type heavy vehicle reaches the dumping position in the dumper (1), it brakes, the rear hook is unhooked, and the heavy regulator pushes the first K-type empty vehicle away; Step S6: the dumper (1) unloads coal from the second K-type heavy vehicle; the heavy regulator unhooked after pushing the first K-type empty vehicle to the position of the dumper (1), and then the heavy regulator returned to carry out the third K-type heavy vehicle shunting operation; Step S7: the dumper (1) unloads coal from the second K-type heavy vehicle; the heavy regulator unhooked after pushing the first K-type empty vehicle to the position of the dumper (1), and then the heavy regulator returned to carry out the third K-type heavy vehicle shunting operation; Step S8: repeat steps S1 to S7 until the entire K-type heavy vehicle is unloaded, at this time, the K-type empty vehicle after unloading coal is gathered on the empty vehicle line, waiting for the locomotive to pull out of the factory.

5. The dual mode switching unloading method of a dumper according to claim 4, characterized in that: The lower coal outlet (2) is a closable lower coal outlet (2); in K-type vehicle mode, the lower coal outlet (2) is opened; in standard vehicle mode, the lower coal outlet (2) is closed.

6. The dual mode switching unloading method of a dumper according to claim 4, characterized in that: The side of the car body abutting plate (4) abutting against the side wall of the car body is the abutting plate, and the abutting plate is provided with a groove, and the vibrator (5) includes a vibrating plate arranged in the groove, and the vibrating plate can perform the actions of extending out of the groove and retracting into the groove to vibrate the side wall of the car body.

7. The dual mode switching coal unloading operation method of a dumper as claimed in claim 4, wherein: The dumper (1) system program is divided into two sets of system operation, and a K-type vehicle mode and a standard vehicle mode switch are arranged on the operation box of the dumper (1), so that the dumper (1) is switched to the corresponding system program in the two modes.

8. The dual mode switching coal unloading operation method of a dumper as claimed in claim 4, wherein: The top of the dumper (1) is provided with a safety belt hook. The top of the dumper (1) is provided with a safety belt hook.

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