Dry quenching transportation system and dry quenching air connection and full sending method

Abstract

The present application belongs to the technical field of dry quenching coke production, and relates to a dry quenching coke transportation system and a dry quenching coke emptying and filling method, which is applied to the dry quenching coke transportation system and comprises a first hoist, a second hoist, a hoist derrick, a coke tank car running along a track, and a positioning device. The coke tank car preferentially performs a full tank filling operation, after the full tank filling operation is completed and the hoist places an empty tank on a transverse trolley carried by the coke tank car, the coke tank car continues to perform an empty tank receiving operation under the same hoist derrick. The present application adjusts the operation sequence of the coke tank car. In a working cycle, when the coke tank car carrying a full tank reaches under the hoist derrick and is clamped and positioned by the positioning device, the full tank is handed over to the hoist; after the full tank filling operation is completed and the hoist places an empty tank in place, the empty tank receiving operation is continued under the same derrick; and after the empty tank receiving operation is completed, the positioning device releases the coke tank car carrying the empty tank to drive away, which effectively reduces coke burning loss and heat loss, and reduces transportation power consumption.

Description

Technical Field

[0001] This invention belongs to the field of dry quenching coke production technology, and particularly relates to a dry quenching coke transport system and a method for receiving and feeding dry quenching coke into the air. Background Technology

[0002] Dry quenching is an energy-saving and environmentally friendly technology in coking processes. It utilizes inert gas to cool red-hot coke and uses the waste heat for power generation. In a typical dry quenching production system, red-hot coke pushed out from the coke oven side is received by coke cans and transported from the coke oven side to the bottom of the hoist frame on the dry quenching furnace side via transport tracks. Then, the hoist lifts the full cans filled with red-hot coke and sends them into the dry quenching furnace. Empty cans are returned to the coke car by the same hoist or another hoist, and then the coke car is carried to the dry quenching furnace side to continue receiving coke.

[0003] The most common operating sequence for coke tank cars in the industry is "receive empty tanks first, then deliver full tanks." Specifically, after completing its coke receiving task, the coke tank car must first travel to the area below the hoist derrick to receive an empty tank, and then deliver the full tank it carries to the same or another derrick to be handed over to the hoist. For example, invention patent CN116554896A discloses a coke tank transportation device and its usage method between different tracks, in which the operating procedure for the coke tank car under the hoist derrick is: receive empty tanks first, then deliver full tanks.

[0004] Long-term production practice has revealed problems with the above-mentioned routine operation sequence:

[0005] (1) Since the coke tanker needs to receive empty tanks first and then deliver full tanks, and is loaded with red coke at nearly 1000°C, it is necessary to wait on the vehicle for the empty tanks to be received. The red coke is exposed to the air for a long time, resulting in a large amount of burning loss and serious heat loss, which affects economic benefits.

[0006] (2) In the “first pick up empty tanks and then deliver full tanks” mode, the coke tanker needs to travel empty to pick up empty tanks and then travel heavily to deliver full tanks. The heavy-load running path and distance are all determined by this operation sequence, which objectively causes the coke tanker to travel a longer load-bearing distance, resulting in higher ton-kilometer power consumption.

[0007] Existing technologies for the operation sequence of coke tank cars under the hoist derrick have remained in the aforementioned conventional mode. Technicians only pay attention to how to increase transportation speed and capacity, ignoring the relationship between the operation sequence, load-bearing distance, and energy consumption. They have not realized that by adjusting the operation sequence under the derrick, the goal of reducing the exposure time of red coke and shortening the load-bearing distance can be achieved simultaneously. Therefore, a dry quenching coke transportation system and a dry quenching coke connection and full-load delivery method are proposed. Summary of the Invention

[0008] The purpose of this invention is to provide a method for dry quenching coke to be connected to an empty tank and then to a full tank. This method can reduce the exposure time of red-hot coke and shorten the load-bearing travel distance by adjusting the operation sequence of the coke tank car under the hoist derrick. This solves the technical problems in the prior art caused by the conventional operation sequence of "connecting an empty tank first and then delivering a full tank", which results in excessive exposure time of red-hot coke in the air, large amount of coke burning loss, serious heat loss, long load-bearing travel distance of the coke tank car, and high power consumption.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is as follows: The present invention provides a method for dry quenching coke conveying from empty to full capacity, applied to a dry quenching coke transport system. The dry quenching coke transport system includes a first hoist, a second hoist, a hoist derrick, coke tank cars traveling along a track, and a positioning device. The operation method includes:

[0010] During a work cycle, when a coke tanker car carrying a full tank of red coke arrives below the hoist derrick, the positioning device clamps and positions the coke tanker car.

[0011] In response to the full tank arrival signal, the coke tanker prioritizes the full tank delivery operation and transfers the full tank to the corresponding hoist.

[0012] After the full tank delivery operation is completed and the hoist places the empty tank onto the traverse trolley carried by the coke tank car, the coke tank car continues to perform the empty tank receiving operation under the same hoist derrick.

[0013] After the empty tank receiving operation is completed, the positioning device releases the coke tank car, and the coke tank car drives away with the empty tank.

[0014] The priority given to delivering full tanks before receiving empty tanks shortens the total distance a coke tanker travels within a work cycle compared to the order of receiving empty tanks first and then delivering full tanks.

[0015] Specifically, in response to the full tank arrival signal, the coke tanker prioritizes performing the full tank delivery operation, specifically as follows:

[0016] The dry quenching coke transport system includes a control device. The control device receives the full tank arrival signal and generates a tank delivery command to prioritize triggering the full tank delivery operation. At the same time, it delays the generation or triggering of a tank receiving command until a confirmation signal indicating that the full tank delivery operation has been completed is detected, and then generates or triggers the tank receiving command.

[0017] Specifically, the operation of filling the coke tank and receiving the empty coke tank are completed sequentially while the coke tank car is in the same clamping and positioning state. The coke tank car does not move or only makes minor adjustments between the two operations. The production method shortens the total carrying distance of the coke tank car by at least 100m and shortens the total exposure time of the red coke from the time it is received to the time it is delivered to the hoisting derrick by at least 120s.

[0018] Specifically, the coke tank car is a vehicle group consisting of one self-propelled coke tank transport vehicle and at least one non-drive coke tank transport vehicle rigidly connected by plate pins; the self-propelled coke tank transport vehicle supplies power and controls the non-drive coke tank transport vehicle through cables and control connection hoses; the self-propelled or non-drive coke tank transport vehicle is equipped with a coke tank presence detection sensor to confirm that the current transport vehicle is full before performing a full-tank delivery operation, and to confirm that the current transport vehicle is empty before performing an empty-tank receiving operation, thus achieving operational interlocking.

[0019] Specifically, the self-driving coke tanker has four speed settings: high speed, medium speed, low speed, and micro speed. The micro speed setting is used during alignment operations to achieve an alignment accuracy of ±2mm between the coke tanker and the hoist derrick, and a stopping accuracy of ±5mm.

[0020] Specifically, the first and second hoists take turns lifting full tanks; the coke tank cars shuttle between the corresponding derricks of the first and second hoists, and under any hoist derrick, the operation is carried out in the order of prioritizing full tanks before receiving empty tanks.

[0021] A dry quenching coke transport control device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it controls the coke tank car and the positioning device to implement the aforementioned dry quenching coke receiving and filling method. The processor includes: a signal receiving module for receiving a full tank arrival signal, a full tank delivery completion signal, and an empty tank receiving completion signal; and an instruction scheduling module for prioritizing the generation of a tank delivery instruction based on the full tank arrival signal and delaying the generation of a tank receiving instruction until the signal receiving module receives the full tank delivery completion signal before generating the tank receiving instruction.

[0022] A dry quenching coke transport system includes a hoisting derrick and a track. Different hoisting derricks are equipped with a first hoist and a second hoist for alternately hoisting full coke cans. Coke can cars travel on the track for transporting coke cans and traversing trolleys. A positioning device is provided below the hoisting derrick for clamping and positioning the coke can cars. The system also includes the aforementioned dry quenching coke transport control device.

[0023] Specifically, the coke tank car is a vehicle group consisting of one self-driving coke tank carrier and at least one non-driving coke tank carrier rigidly connected by plate pins; the self-driving coke tank carrier is equipped with a running drive device, a slewing drive device, an electrical room and a driver's cab, and supplies power and controls the non-driving coke tank carrier through cables and control connection hoses; both the self-driving coke tank carrier and the non-driving coke tank carrier are equipped with a connection box at the end for dust and water protection, and the connection box contains quick connectors for electrical and control connections.

[0024] Specifically, the positioning device is an APS hydraulic positioning and clamping device; an alignment switch is provided below the hoist frame, and the alignment switch is interlocked with the APS hydraulic positioning and clamping device and the traveling drive device of the coke tank car. When the alignment accuracy is within ±10mm, an alignment signal is issued and subsequent operations are allowed.

[0025] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0026] 1. This invention shortens the load-carrying travel distance by adjusting the operation sequence. Existing technicians generally focus on how to improve transportation speed or increase transport capacity, but have not realized that there is a correlation between the operation sequence of coke tank cars under the hoisting derrick and the load-carrying travel distance and power consumption. This invention adjusts "first receive empty tanks and then deliver full tanks" to "first deliver full tanks and then receive empty tanks", which shortens the total load-carrying travel distance of coke tank cars in one work cycle.

[0027] 2. This invention effectively reduces the exposure time of red coke in the air, thereby reducing coke burn-off and heat loss. According to actual production calculations, after adopting the method of this invention, the exposure time of approximately 45 tons of red coke loaded in a coke tanker is shortened by about 123 seconds. Each cycle can reduce coke burn-off by about 45-70 kg, while reducing heat loss by about 0.32 tons of medium-pressure superheated steam. Based on an annual coke production of 1.05 million tons, the annualized benefit can reach several million yuan, demonstrating significant economic benefits.

[0028] 3. This invention reduces the power consumption of coke tank trucks during transportation. Due to the shortened load-bearing distance, the power consumption of a single working cycle of the coke tank truck is reduced accordingly. Under long-term continuous operation, the cumulative energy-saving effect is considerable, which is conducive to enterprises reducing costs and increasing efficiency and promoting green and low-carbon production.

[0029] 4. Through systematic control logic and signal interlocking mechanism, this invention prioritizes the full-can delivery operation while verifying the sequence of the coke can detection sensor, the full-can delivery signal, and the full-can delivery completion signal to effectively prevent misoperation. The entire process operates stably and reliably under the clamping state of the APS positioning device. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the dry quenching coke transport system in one embodiment;

[0032] Figure 2 This is a flowchart of a dry quenching coke connection and full-load feeding method according to one embodiment;

[0033] Figure 1 In the middle, 1. First hoist, 2. Second hoist, 3. Hoist derrick, 4. Track, 5. Coke tank car, 6. Positioning device. Detailed Implementation

[0034] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0035] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.

[0036] Example 1: This example provides a dry quenching coke transport system and a dry quenching coke filling and emptying method. The dry quenching coke filling and emptying method is applied to, for example... Figure 1 The dry quenching coke transport system shown includes a first hoist 1, a second hoist 2, a hoist derrick 3, a track 4, coke tank cars 5 traveling along the track 4, and a positioning device 6 installed below the hoist derrick 3.

[0037] In this embodiment, the first hoist 1 and the second hoist 2 are respectively mounted on different hoist derricks 3, used to alternately lift full coke cans to ensure the continuity of dry quenching operations. Coke can cars 5 travel on tracks 4, used to transport coke cans and traverse trolleys. The positioning device 6 preferably adopts an APS hydraulic positioning and clamping device, installed on the outside of the track 4 below the hoist derrick 3, using a double-cylinder clamping method to ensure accurate positioning and safe operation of the coke can car 5 under the hoist derrick 3. An alignment switch is also provided below the hoist derrick 3, which is interlocked with the APS hydraulic positioning and clamping device and the traveling drive device of the coke can car 5, ensuring that an alignment signal is issued when the alignment accuracy is within ±10mm, and allowing subsequent full-can delivery or empty-can receiving operations to commence.

[0038] Furthermore, the coke tank car 5 is a trainset consisting of one self-propelled coke tank carrier and at least one non-driven coke tank carrier rigidly connected by plate pins. The self-propelled coke tank carrier is equipped with a running drive, a slewing drive, coke tank lifting guide columns, a base, an electrical room, and a driver's cab, used for towing and operating the non-driven coke tank carrier. The self-propelled coke tank carrier supplies power and controls the non-driven coke tank carrier via cables and control connection hoses. Both the self-propelled and non-driven coke tank carriers have identical plate pin seats and connecting boxes at their ends. The connecting boxes are dustproof and waterproof, and contain quick connectors for electrical and control connections, facilitating quick connection and separation between the two vehicles.

[0039] In the self-propelled coke tank transport vehicle's travel drive system, each trolley's wheels are drive wheels, driven by a VVVF-controlled three-in-one geared motor, and equipped with a motor encoder to achieve frequency converter vector control. A total of eight travel drive units are configured, and the system is designed so that when one drive motor is not working, the coke tank car 5 can still travel normally at medium or low speeds using the remaining drive motors. The self-propelled coke tank transport vehicle or its connected non-drive coke tank transport vehicle is equipped with a coke tank presence / absence detection sensor. This sensor is interlocked with the full-tank delivery operation, empty-tank receiving operation, and coke receiving operation. Before performing a full-tank delivery operation, the coke tank presence / absence detection sensor confirms that the transport vehicle is currently full; before performing an empty-tank receiving operation, the sensor confirms that there are no coke tanks on the transport vehicle, to prevent accidents such as coke tank collisions or red-hot coke falling to the ground.

[0040] The self-propelled coke tanker carrier's drive system features four speed settings: high, medium, low, and micro, with smooth and seamless gear changes. The high speed is used for long-distance travel, the medium speed for short-distance travel, the low speed for rough alignment with the dry quenching system, and the micro speed for precise alignment with the hoist derrick 3 and the coke carbonization chamber. In actual operation, the micro speed setting is used for alignment, achieving an alignment accuracy of ±2mm between the coke tanker 5 and the hoist derrick 3, and a stopping accuracy of ±5mm.

[0041] The following is combined with Figure 2 The flowchart shown illustrates in detail the dry quenching and air-to-full feeding method provided in this embodiment. This method includes the following steps in one work cycle:

[0042] First, when the coke car 5 completes the coke receiving operation at the coke oven side and travels along the track 4 to below the hoist derrick 3 with a full can loaded with red coke, the positioning device 6 located below the hoist derrick 3 clamps and positions the coke car 5. At this time, the coke can detection sensor on the coke car 5 sends a "coke can present" signal to the control system, which, together with the alignment signal from the alignment switch, confirms that the coke car 5 is in a safe operating state.

[0043] Next, in response to the full-can arrival signal, the control system prioritizes the full-can delivery operation of coke car 5. Specifically, after receiving the full-can arrival signal, the control device of the dry quenching coke transport system generates a delivery command to trigger the full-can operation, while simultaneously delaying the generation or triggering of a receiving command. During the full-can delivery operation, the elevator lifts the full can along with the traverse trolley from coke car 5, and transfers the full can to the loading device of the dry quenching furnace through lifting and traverse movement. After the full can is lifted away by the elevator and passes through the standby position, the elevator lowers the empty can onto the traverse trolley carried by coke car 5.

[0044] Afterwards, upon detecting a confirmation signal indicating that the full-load operation has been completed, the command scheduling module in the control device generates a can-receiving command, triggering the empty-can-receiving operation. At this time, the coke tank car 5 continues to perform the empty-can-receiving operation under the same hoist derrick 3 and in the clamping and positioning state of the same APS hydraulic positioning clamping device, receiving the empty cans lowered by the hoist. Throughout the entire switching process between the full-load operation and the empty-can-receiving operation, the coke tank car 5 does not move out of the hoist derrick 3, or only makes minor alignment adjustments when necessary, without requiring significant car-moving movements.

[0045] After the empty can is received, the coke can is confirmed to be correctly positioned by the coke can detection sensor. The positioning device 6 releases the coke can car 5, and the coke can car 5, carrying the empty can, leaves the hoist derrick 3 and returns to the coke oven side along the track 4, ready for the next coke oven receiving operation. When the corresponding derricks of the first hoist 1 and the second hoist 2 need to shuttle between each other, the coke can car 5 performs the operation in the above-mentioned order of first filling the can and then receiving the empty can under either hoist derrick 3 to ensure the consistency of the operation sequence throughout the entire production process.

[0046] In this embodiment, the adjustment of the order of prioritizing the delivery of full cans before receiving empty cans brings significant and some unexpected technical benefits. Under the original "receive empty cans first, then deliver full cans" order, the coke tanker truck had to travel empty to the derrick to receive an empty can, and then travel fully loaded to deliver it, resulting in a longer loaded travel path. However, with the "deliver full cans first, then receive empty cans" order in this embodiment, the coke tanker truck travels directly fully loaded to the derrick to deliver the full can, and returns empty or carrying only an empty can, substantially shortening the loaded travel path. Actual measurements show that the total loaded travel distance of the coke tanker truck in one work cycle is shortened by at least 100 meters compared to the original order.

[0047] Meanwhile, because the full-tank delivery operation is prioritized, full tanks loaded with nearly 1000°C red-hot coke are immediately handed over after arriving below the hoist derrick 3, without waiting on the vehicle for the empty tank receiving operation to be completed. Actual production calculations show that, using this method, the exposure time of approximately 45 tons of red-hot coke in the air on the coke tank car is reduced by about 123 seconds. Each cycle reduces coke burn-off by approximately 45 to 70 kg, while also reducing heat loss from approximately 0.32 tons of medium-pressure superheated steam. Based on an annual coke production scale of 1.05 million tons, the coke burn-off and heat loss alone can generate direct economic benefits of several million yuan annually.

[0048] Furthermore, since the total distance of the loaded operation is shortened by at least 100 meters, the energy consumption of the coke tank car per single work cycle is also reduced accordingly. Under the long-term continuous operation of the dry quenching system, the cumulative energy saving effect is considerable, which is conducive to enterprises achieving cost reduction, efficiency improvement, and green and low-carbon production goals.

[0049] In summary, the method provided in this embodiment, by adjusting the program logic of the control device, changes the operation sequence of the coke tank car under the hoist derrick from "first receiving an empty tank and then delivering a full tank" to "first delivering a full tank and then receiving an empty tank". This simultaneously achieves multiple technical effects such as shortening the load-bearing travel distance, reducing the exposure time of red-hot coke, reducing coke burning and heat loss, and reducing transportation power consumption. Moreover, the entire process operates stably and reliably under the protection of a systematic signal interlocking mechanism, demonstrating good industrial applicability.

[0050] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A method for receiving and filling dry quenching coke from empty containers, applied to a dry quenching coke transport system, the dry quenching coke transport system comprising a first hoist, a second hoist, a hoist derrick, coke tank cars traveling along a track, and a positioning device, characterized in that, The operating methods include: During a work cycle, when a coke tanker car carrying a full tank of red coke arrives below the hoist derrick, the positioning device clamps and positions the coke tanker car. In response to the full tank arrival signal, the coke tanker prioritizes the full tank delivery operation and transfers the full tank to the corresponding hoist. After the full tank delivery operation is completed and the hoist places the empty tank onto the traverse trolley carried by the coke tank car, the coke tank car continues to perform the empty tank receiving operation under the same hoist derrick. After the empty tank receiving operation is completed, the positioning device releases the coke tank car, and the coke tank car drives away with the empty tank. The priority given to delivering full tanks before receiving empty tanks shortens the total distance a coke tanker travels within a work cycle compared to the order of receiving empty tanks first and then delivering full tanks.

2. The dry quenching coke feeding method according to claim 1, characterized in that, In response to the full tank arrival signal, the coke tanker prioritizes the full tank delivery operation, specifically as follows: The dry quenching coke transport system includes a control device. The control device receives the full tank arrival signal and generates a tank delivery command to prioritize triggering the full tank delivery operation. At the same time, it delays the generation or triggering of a tank receiving command until a confirmation signal indicating that the full tank delivery operation has been completed is detected, and then generates or triggers the tank receiving command.

3. The dry quenching coke feeding method according to claim 1, characterized in that, The operation of filling the tank and receiving the empty tank are completed sequentially while the coke tank car is in the same clamped and positioned state. The coke tank car is not moved or only slightly adjusted in position between the two operations. The production method reduces the total distance of the coke tanker's loaded travel by at least 100m and reduces the total exposure time of the red coke from receipt to delivery to the hoist derrick by at least 120s.

4. The dry quenching coke feeding method according to claim 1, characterized in that, The coke tank car is a vehicle group consisting of one self-driving coke tank carrier and at least one non-driving coke tank carrier rigidly connected by plate pins; the self-driving coke tank carrier supplies power and controls the non-driving coke tank carrier through cables and control connection hoses; the self-driving coke tank carrier or the non-driving coke tank carrier is equipped with a coke tank presence detection sensor to confirm that there is a full tank on the current carrier before performing the full tank delivery operation, and to confirm that there is no coke tank on the current carrier before performing the empty tank receiving operation, thus realizing the operation interlock.

5. The dry quenching coke feeding method according to claim 4, characterized in that, The self-driving coke tanker has four speed settings: high speed, medium speed, low speed, and micro speed. The micro speed setting is used during alignment operations to achieve an alignment accuracy of ±2mm between the coke tanker and the hoist derrick, and a stopping accuracy of ±5mm.

6. The dry quenching coke feeding method according to claim 1, characterized in that, The first and second hoists take turns lifting full tanks; the coke tank cars shuttle between the corresponding derricks of the first and second hoists, and under any hoist derrick, they perform operations in the order of prioritizing full tanks before receiving empty tanks.

7. A dry quenching coke transport control device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it controls the coke tank car and the positioning device to implement the production method as described in any one of claims 1-6; the processor includes: a signal receiving module for receiving a full tank arrival signal, a full tank delivery completion signal, and an empty tank receiving completion signal; and an instruction scheduling module for generating a tank delivery instruction first based on the full tank arrival signal, and delaying the generation of a tank receiving instruction until the signal receiving module receives the full tank delivery completion signal before generating the tank receiving instruction.

8. A dry quenching coke transport system, characterized in that, The system includes a hoisting derrick and a track, with a first hoist and a second hoist installed on different hoisting derricks for alternating hoisting of full coke cans; coke can cars travel on the track for transporting coke cans and traversing trolleys; a positioning device is provided below the hoisting derrick for clamping and positioning the coke can cars; and a dry quenching coke transport control device as described in claim 7.

9. A dry quenching coke transport system according to claim 8, characterized in that, The coke tank car is a vehicle group consisting of one self-propelled coke tank carrier and at least one non-driven coke tank carrier rigidly connected by plate pins. The self-propelled coke tank carrier is equipped with a running drive device, a slewing drive device, an electrical room and a driver's cab, and supplies power and controls the non-driven coke tank carrier through cables and control connection hoses. Both the self-propelled and non-driven coke tank carriers are equipped with a connection box at their ends for dust and water protection, and the connection box contains quick connectors for electrical and control connections.

10. A dry quenching coke transport system according to claim 8, characterized in that, The positioning device is an APS hydraulic positioning and clamping device; an alignment switch is provided below the hoist frame, which is interlocked with the APS hydraulic positioning and clamping device and the coke tank car's travel drive device. When the alignment accuracy is within ±10mm, an alignment signal is issued and subsequent operations are allowed.

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