Inching exhaust device of diesel engine

Abstract

The invention relates to an inching exhaust device of a diesel engine. The inching exhaust device of the diesel engine comprises a driver, a driving device connected with the diesel engine, an industrial personal computer and a power module connected with the driver, the driving device comprises a servo motor, and the driver is connected with the servo motor and the industrial personal computer. And the driver is used for driving the servo motor to rotate at a preset rotating speed according to the requirement of an output instruction of the industrial personal computer, so that the driving device drives the diesel engine to perform inching exhaust. The industrial personal computer is further used for receiving the rotating speed data and the torque data of the driving device through the driver and filing the rotating speed data and the torque data. The performance of the diesel engine can be effectively tested, and the maintenance efficiency is improved. By setting the corresponding rotating speed of the diesel engine and measuring and recording torque data, sufficient exhaust of a fuel oil loop is achieved, the influence of human factors can be reduced in the maintenance and detection process, and standardization, visualization, high efficiency, intelligence and traceability of the maintenance and detection process are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of diesel engine maintenance, in particular to a diesel engine inching exhaust device. Background Art

[0002] During the maintenance of diesel engines, it is often necessary to disassemble the fuel pipeline of the originally closed system, such as replacing the injector, replacing the high-pressure or low-pressure oil pump, replacing the filter, etc. In this process, air will inevitably enter the fuel pipeline. When the pipeline is re-sealed, the air still remains inside the pipeline, which means that the diesel engine cannot start normally and the air needs to be discharged first. The traditional and more common method is to use the method of pressing the hand oil pump to discharge the air in the fuel pipeline in sections.

[0003] However, the disadvantage of this method is that sometimes it takes a long time to press, which consumes a lot of man-hours. Especially for some high-power models, it often takes several hours or even longer to press, and it still cannot be fully exhausted. In addition, there are also cases where the air cannot be exhausted by pressing the hand oil pump, which easily leads to multiple unsuccessful starts or start timeouts due to insufficient exhaust of the diesel engine after overhaul.

[0004] In addition, in actual maintenance, some maintenance personnel use the diesel engine's own starter motor for exhaust and cranking in order to save trouble or out of helplessness. However, since the diesel engine's starter motor is a DC series-excited motor, once it is started, the speed increases rapidly, and the speed changes greatly when the torque fluctuates, it is impossible to stabilize the diesel engine's speed at a low speed, and it cannot meet the low-speed exhaust and cranking functions. If frequent jogging is used, this can prevent the speed from being too high, but since the starting current of this motor is very large, frequent jogging can easily cause damage to the motor and battery. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a diesel engine inching exhaust device.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a diesel engine inching exhaust device, including a driver, a driving device connected to the diesel engine, an industrial computer and a power module connected to the driver, the driving device includes a servo motor, and the driver is connected to the servo motor and the industrial computer;

[0007] The driver is used to drive the servo motor to rotate at a preset speed according to the requirements of the output instruction of the industrial computer, so that the driving device drives the diesel engine to perform jog exhaust;

[0008] The industrial computer is also used to receive the rotation speed data and torque data of the driving device through the driver and archive them.

[0009] Further, in the diesel engine inching exhaust device of the present invention, the driving device further comprises a reduction head and a flange connection assembly; the output shaft of the servo motor is locked and connected with the input shaft of the reduction head, and the flange connection assembly fixes the servo motor and the reduction head to the mounting hole of the starter motor of the diesel engine;

[0010] The reduction head is used to amplify the torque.

[0011] Furthermore, in the diesel engine inching exhaust device described in the present invention, the maximum tolerable torque of the reduction head is above 2000N, and the rotation speed is above 3000rpm.

[0012] Furthermore, in the diesel engine inching exhaust device described in the present invention, the reduction head adopts a 90-degree planetary gear reducer.

[0013] Furthermore, in the diesel engine inching exhaust device described in the present invention, the flange connection assembly includes a flange, a coupling, a bearing, and a drive gear. The flange, coupling, bearing and drive gear are assembled in sequence, one end of the flange is connected to the output shaft of the reduction head, and the drive gear is meshed with the turning gear of the diesel engine.

[0014] Furthermore, in the diesel engine inching exhaust device described in the present invention, the hardness of the driving gear is less than or equal to the hardness of the turning gear.

[0015] Furthermore, in the diesel engine jog exhaust device described in the present invention, the industrial computer is used to collect torque data of the drive device at several different preset speeds during the jog exhaust process, and use it as historical data, to obtain current torque data of the drive transposition when cranking, to compare the current torque data with the historical data, and to judge whether the diesel engine is in a good condition based on the comparison result.

[0016] Furthermore, in the diesel engine momentary exhaust device described in the present invention, the industrial computer also includes a human-computer interaction interface provided with a module for the user to determine a preset speed to form a speed control instruction; the human-computer interaction interface is also used to display the speed data, torque data of the drive device, and the diesel engine speed and its crankshaft torque in real time.

[0017] Furthermore, in the diesel engine inching exhaust device described in the present invention, the industrial computer is also used to collect current data of the driver, and calculate the instantaneous torque based on the current data and display it in real time.

[0018] Furthermore, in the diesel engine jog exhaust device described in the present invention, the industrial computer is also used to perform torque trend analysis based on the current torque data of the drive transposition during cranking and the historical data, and determine whether there is an abnormality based on the obtained analysis results. If so, a corresponding alarm is issued.

[0019] Furthermore, in the diesel engine inching exhaust device of the present invention, the industrial computer is also used to collect current data of the driver, and calculate the instantaneous torque according to the current data and display it in real time; or

[0020] The industrial computer is also used to monitor the state of the driver, and determine whether there is an overload, overcurrent and / or overvoltage situation according to the state of the driver. If so, a corresponding alarm is issued.

[0021] The diesel engine jog exhaust device of the present invention has the following beneficial effects: the present invention can effectively test the performance of the diesel engine and improve the maintenance efficiency. By setting the corresponding speed of the diesel engine, measuring and recording the torque data, the fuel circuit is fully exhausted, the influence of human factors can be reduced during the maintenance and inspection process, and the maintenance and inspection process can be standardized, visualized, efficient, intelligent and traceable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0023] Figure 1 It is a structural schematic diagram of a first embodiment of a diesel engine inching exhaust device of the present invention;

[0024] Figure 2 It is a structural schematic diagram of a second embodiment of a diesel engine inching exhaust device of the present invention;

[0025] Figure 3 is a schematic diagram of the installation between the driving device and the diesel engine provided by an embodiment of the present invention;

[0026] Figure 4 is a structural diagram of a flange connection assembly provided by an embodiment of the present invention;

[0027] Figure 5 It is a reference schematic diagram of a human-computer interaction interface provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0028] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0029] It should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense, for example, it can be fixedly connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intervening elements.

[0030] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0031] It should be noted that in the steam turbine system of a nuclear power plant, the inching exhaust means that before the steam turbine is started or after it is shut down, the turbine rotor is rotated several times by briefly starting the cranking device to discharge the accumulated gas in the cylinder and prevent the equipment from being damaged due to excessive pressure in the cylinder. This operation helps to ensure the safety and stability of the steam turbine during the start-up or shutdown process. The electric cranking is an important auxiliary equipment in the steam turbine generator set of a nuclear power plant, which is used to drive the rotor to rotate before the unit is started or after it is shut down. Its main functions include: Checking the moving and static parts: Before the unit is started, the cranking can be used to check whether there is friction between the moving and static parts and check the deflection of the rotor. Eliminating thermal bending: Continuous cranking can eliminate the non-permanent bending of the rotor caused by long-term shutdown and storage, and avoid thermal bending caused by uneven heating of the rotor after steam seal steam delivery. Reducing the starting torque: The cranking can greatly reduce the starting torque of the impact turn and reduce the impact force of steam on the blades. Preventing thermal bending: The cranking can prevent the rotor from thermal bending during shutdown.

[0032] The nuclear power plant is equipped with a variety of emergency equipment powered by diesel engines, such as fixed diesel generator sets, mobile diesel generator sets, mobile water injection pumps, winches, etc., including LLS Henan Diesel Engine Heavy Industry TBD234V8 diesel generator sets, SKA Volvo TAD1642GE mobile diesel generator sets, SKA Cummins QSZ525 diesel engine-driven mobile water pumps, LHY Deutz BF6M1015C.G3 diesel generator sets, and LHZ Cummins KTA38-G2B diesel generator sets.

[0033] like Figure 1 As shown, in the first embodiment of the diesel engine jog exhaust device of the present invention, the diesel engine jog exhaust device of this embodiment includes a driver 20, a driving device 10 connected to a diesel engine 40, an industrial computer 30, and a power module 50 connected to the driver 20. The driving device 10 includes a servo motor 101, and the driver 20 is connected to the servo motor 101 and the industrial computer 30. The driver 20 is used to drive the servo motor 101 to rotate at a preset speed according to the requirements of the industrial computer 30 output instructions, so that the driving device 10 drives the diesel engine 40 to perform jog exhaust. The industrial computer 30 is also used to receive the speed data and torque data of the driving device 10 through the driver 20 and archive them.

[0034] This embodiment can effectively test the performance of the diesel engine 40 and improve the maintenance efficiency. By setting the corresponding speed of the diesel engine 40, measuring and recording the torque data, and achieving full exhaust of the fuel circuit, the influence of human factors can be reduced during the maintenance and inspection process, and the maintenance and inspection process can be standardized, visualized, efficient, intelligent and traceable.

[0035] like Figure 2 As shown, in the second embodiment of the diesel engine inching exhaust device of the present invention. The driving device 10 of this embodiment also includes a reduction head 102 and a flange connection assembly 103. The output shaft of the servo motor 101 is locked and connected with the input shaft of the reduction head 102, and the flange connection assembly 103 fixes the servo motor 101 and the reduction head 102 to the mounting hole of the starter motor of the diesel engine 40. Figure 3 As shown, Figure 3 A schematic diagram of the installation of the drive device 10 and the starter motor installation hole of the diesel engine 40 is shown.

[0036] In this embodiment, the power module 50 includes a DC switching power supply 501 and a 220V power supply 502. The DC switching power supply 501 converts the AC power of the 220V power supply 502 into the DC power required by the driver 20.

[0037] In some embodiments, the maximum torque of the reduction head 102 is above 2000N and the rotation speed is above 3000rpm. The reduction head 102 can adopt a 90-degree planetary gear reducer. The hardness of the driving gear is less than or equal to the hardness of the turning gear, which can further reduce the risk of gear loss of the diesel engine 40.

[0038] In some embodiments, reference Figure 4 The flange connection assembly 103 includes a flange 1031, a coupling 1032, a bearing 1033, and a driving gear 1034. The flange 1031, the coupling 1032, the bearing 1033 and the driving gear 1034 are assembled in sequence. One end of the flange is connected to the output shaft of the reduction head 102, and the driving gear is meshed with the turning gear of the diesel engine 40.

[0039] In some embodiments, the industrial computer 30 collects torque data of the drive device 10 at several different preset speeds during the inching exhaust process, and uses it as historical data, obtains current torque data of the drive transposition when cranking, compares the current torque data with the historical data, and determines whether the diesel engine 40 is in good condition based on the comparison result.

[0040] In some embodiments, the industrial computer 30 can also automatically perform torque trend analysis based on the current torque data and historical data of the drive transposition during the cranking process, and determine whether there is an abnormality based on the obtained analysis results. If so, a corresponding alarm is issued. Specifically, a deviation allowable range can be preset, and the industrial computer 30 compares the current torque data of the drive transposition during the cranking process with the historical data to obtain a comparison result. If the comparison result is not within the preset deviation allowable range, it means that the drive device 10 has a sudden change (abnormality), and an early warning is automatically triggered, and an alarm reminder is issued in time.

[0041] It is understandable that after the diesel engine 40 is repaired, the diesel engine 40 should be cranked at a low speed as required, in order to check whether the parts are installed correctly and whether there is interference between the moving parts. The traditional cranking method is to install the cranking tool in the special cranking reserved hole and then crank manually. The disadvantage of this method is that it can only be cranked at a very low speed, and the cranking speed cannot be accurately controlled. Moreover, the torque change during the cranking process can only be felt by hand, and the torque value cannot be accurately obtained, making it difficult to program and accurately manage this test process. For example, the cranking space of models such as Cummins and Hechai is limited, and there are situations such as dead corners that cannot be cranked. Manual cranking is laborious and inefficient, and the cranking speed is difficult to control. It is often the case that the cranking is over-cranked or not in place, and it is necessary to crank repeatedly.

[0042] According to historical experience, diesel engine 40 has suffered serious damage and failed to start many times. The internal status of diesel engine 40 cannot be checked. Maintenance personnel rely too much on personal experience to determine whether diesel engine 40 is stuck or the resistance increases. The cranking torque measurement device is designed to quantify and visualize the cranking torque of diesel engine 40, and a torque account can be established to track the operation trend of diesel engine 40 equipment and better control the equipment status. Visualize and accurately manage the operation of diesel engine 40.

[0043] This embodiment can measure the torque data at several speeds and record them for archiving when the diesel engine 40 is in good working condition, for example, after an overhaul. When performing cranking tests regularly in the future, the current torque data can be compared with the historical data, thereby helping to understand whether the diesel engine 40 is in a good condition. That is, after each maintenance, cranking is performed and the torque is recorded, and compared with the historical data, which can help evaluate the maintenance effect.

[0044] In terms of power supply, a large-capacity battery or a high-power AC / DC converter is selected to realize both online and offline working modes. In some embodiments, the power supply is a battery or a DC regulated power supply with a power of more than 5Kw, a voltage of 18-90VDC, and a stable and long-lasting output. The motor is preferably light in weight, small in size, splash-proof, and self-cooling. The working voltage matches the power supply, and the power is more than 3Kw.

[0045] In terms of drive, a compact high-torque servo motor 101 is selected, and a special reduction head 102 is designed to further amplify the torque as a power output device. The reduction head 102 can be designed as an L-shaped reduction head 102, which is lightweight, high-strength, and space-saving. It can be expanded in the limited space where the motor is installed, which is convenient for motor installation, and can withstand a maximum torque of more than 2000N and a speed of 3000rpm and above.

[0046] In terms of the connection device, a special flange-gear integrated connection device (i.e., flange connection assembly 103) is designed. The flange connection assembly 103 is used to fix the motor and the reduction head 102 on the mounting hole of the diesel engine 40 starter motor. The drive gear is meshed with the cranking gear of the diesel engine 40. The flange and gear can be adaptively modified according to different models, so as to be suitable for multiple models of diesel engine 40 equipment. The servo motor 101 is installed on the above-mentioned reduction head 102 flange assembly to ensure accurate alignment, and the motor output shaft and the input shaft of the reduction head 102 are locked. The flange and gear must be matched with the corresponding model, and tailored according to the target model cranking gear and motor mounting port, so as to be suitable for installation of various models of diesel engines 40; the gear hardness should not be higher than the diesel engine 40 cranking gear.

[0047] In terms of software, according to the torque characteristics of the flywheel end of the diesel engine, the driver is redeveloped to make the program suitable for driving the motor for the cranking, exhaust, torque measurement, trend analysis, data collection and recording of the diesel engine. The control modes of the servo drive include: position, speed, torque; programmable protection includes multi-directional protection functions such as position error, overcurrent, overvoltage or undervoltage, output short circuit, overload, etc. Drive motor type: brushless motor, servo motor. Position feedback includes incremental encoder and digital Hall feedback. Absolute encoder Tamagawa protocol is used. Communication methods include: 1. RS232 serial interface, baud rate can reach more than 115KB; 2. RS485 MODBUS RTU serial interface, baud rate can reach more than 115KB; 3. CAN communication, compatible with CANopen DS-402, baud rate up to 1MHz.

[0048] This embodiment can realize the turning of various diesel engines at different set speeds, forward and reverse steering, and measure and record torque values; at the same time, the fuel circuit is fully exhausted, and the influence of human factors is reduced during the maintenance and inspection process, so as to achieve standardization, visualization, efficiency, intelligence and traceability of the maintenance and inspection process. The following is a visual comparison of the advantages and disadvantages of this embodiment (new technology) and the related technology (old technology) in the form of a table.

[0049] Table 1 Comparison of the advantages of new and old technologies

[0050]

[0051] In some embodiments, Figure 5 As shown, Figure 5 A reference schematic diagram of the human-machine interaction interface 301 of the industrial computer is shown. In this embodiment, the motor driver can be controlled by the customized software installed in the control panel HMI as the host computer, and the cranking speed and direction can be accurately controlled. The instantaneous torque can be calculated by collecting the driver current data, and all data will be displayed on the screen of the control panel in real time.

[0052] It is understandable that the human-machine interface and software system are preferably dustproof and waterproof, equipped with a large-capacity battery, with a battery life of at least 4 hours, and with multiple interfaces such as external USB and strong scalability. The interactive interface is friendly and easy to understand, including windows such as forward and reverse operation, speed display and setting, motor transmission ratio display, torque display and trend recording, device type and related parameter customization, alarm interface, device status display, etc.; set data storage and export functions, and memory of more than 2G. Within the specified speed range, stepless speed regulation and closed-loop speed control are achieved, the speed error is within plus or minus 3%, and when the torque fluctuates, the system can quickly recover, has forward and reverse functions, overload protection and alarm, overcurrent protection and alarm, overheating protection and alarm, and actuation function, and a wireless connection between the human-machine interface and the driver.

[0053] Table 2 Hardware configuration material list of specific embodiments

[0054] name model unit quantity DC servo motor TC130TM-15030E5-CB tower 1 Servo Drives BCPC-135100-OPE tower 1 10-inch industrial control human-machine interface AT-6872-CN tower 1 90 degree reduction head HLR120-L1-T tower 1 Flange connector assembly set 5 72V DC power supply RHE-52SK tower 1 Wiring Harness set 1

[0055] In this embodiment, the operation and use process of the device is as follows:

[0056] (1) Turn on the 220V main power supply, rectifier power switch, and driver power switch one by one, and check whether the signal lights on each component are correct.

[0057] (2) Start the HMI control panel and click to enter the operation procedure.

[0058] (3) Select the input port on the HMI start interface, and then click OK. After the input signal is correctly selected, the current input voltage will be displayed in the upper left box of the interface. Normally it should be around 72V.

[0059] (4) Select TBD234V8 model and direction to enter the TBD234V8 operation interface. The system is in standby mode and can proceed to the next step at any time.

[0060] (5) Enter the speed in the speed input box, or turn the speed wheel to adjust the speed, then press the start button, the motor will start, drive the diesel engine to accelerate smoothly to the set speed, and maintain stability. For equipment safety considerations, this operating system limits the maximum speed of the engine to 30 rpm. After the motor starts running, the speed of the selected diesel engine model will be displayed in the green box in the upper right corner of the interface.

[0061] (6) During the operation of the motor, the diesel engine speed can be adjusted using the speed adjustment key on the HMI interface. The speed can be adjusted within the range of 6 to 30 rpm.

[0062] (7) When the vehicle needs to stop, press the stop button on the HMI interface. The driver will then control the motor to decelerate at a certain speed until it stops. After the motor stops, the motor's built-in brake will automatically lock the motor position.

[0063] (8) When the motor is in standby mode, if necessary, you can press the inching button on the HMI interface to turn the diesel engine to any position and lock it. You can also use the inching function to assist the diesel engine exhaust. However, in order to prevent the motor from overheating, the number of inching should not be too many and the time should not be too long.

[0064] (9) When the system is working, the diesel engine speed and crankshaft torque will be displayed in real time on the HMI interface of the control box.

[0065] (10) Considering that the pressure of the diesel engine lubrication oil circuit is at a low level at this time, it is recommended that the continuous operation time should not exceed 20 minutes each time.

[0066] After the device is used, the specific operation is as follows: After the exhaust operation is completed, exit the TBD234V8 operation interface on the HMI. Then turn off the driver, DC power switch, and 220V main power switch one by one. Disassemble the connection harness of each component. Finally, remove the motor flange assembly from the diesel engine and disassemble it. Install the exhaust plug on the diesel engine and install the starter motor of the diesel engine.

[0067] The diesel engine inching exhaust device of this embodiment can realize electric cranking, inching exhaust, torque measurement, starting performance analysis and data statistical analysis of small and medium-sized diesel engines. In view of the structural characteristics of different types of diesel engines, the structure of the main equipment of the diesel engine is not changed, and it has strong adaptability. The combination of software and hardware realizes automated and intelligent maintenance, eliminating the reliance on the experience and skills of operation and maintenance personnel. It has a simple structure, low cost, and flexible use. It has strong scalability and can be applied to various types of electric start diesel engines by matching different flange gear devices. The control software is compiled to accurately control the cranking speed, adjust the cranking direction, and measure the cranking torque to achieve automation, intelligence, and visualization. The cranking and inching data are recorded and statistically analyzed for the first time, and historical data and data of the same model can be combined for big data statistics.

[0068] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0069] The steps of the method or algorithm described in conjunction with the embodiments disclosed herein may be implemented directly using hardware, a software module executed by a processor, or a combination of the two. The software module may be placed in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0070] It can be understood that the above embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, the above technical features can be freely combined without departing from the concept of the present invention, and several deformations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should belong to the coverage of the claims of the present invention.

Claims

1. A diesel engine inching exhaust device, characterized in that: It includes a driver, a driving device connected to a diesel engine, an industrial computer and a power module connected to the driver, wherein the driving device includes a servo motor, and the driver is connected to the servo motor and the industrial computer; The driver is used to drive the servo motor to rotate at a preset speed according to the requirements of the output instruction of the industrial computer, so that the driving device drives the diesel engine to perform jog exhaust; The industrial computer is also used to receive the rotation speed data and torque data of the driving device through the driver and archive them.

2. The diesel engine inching exhaust device according to claim 1, characterized in that: The driving device further comprises a reduction head and a flange connection assembly; the output shaft of the servo motor is locked and connected to the input shaft of the reduction head, and the flange connection assembly fixes the servo motor and the reduction head to the mounting hole of the starter motor of the diesel engine; The reduction head is used to amplify the torque.

3. The diesel engine inching exhaust device according to claim 2, characterized in that: The maximum torque that the reduction head can withstand is above 2000N, and the rotation speed is above 3000rpm.

4. The diesel engine inching exhaust device according to claim 3, characterized in that: The reduction head adopts a 90-degree planetary gear reducer.

5. The diesel engine inching exhaust device according to claim 2, characterized in that: The flange connection assembly includes a flange, a coupling, a bearing, and a driving gear. The flange, coupling, bearing, and driving gear are assembled in sequence. One end of the flange is connected to the output shaft of the reduction head, and the driving gear is meshed with the cranking gear of the diesel engine.

6. The diesel engine inching exhaust device according to claim 5, characterized in that: The hardness of the driving gear is less than or equal to the hardness of the turning gear.

7. The diesel engine inching exhaust device according to claim 1, characterized in that: The industrial computer is used to collect torque data of the drive device at several different preset speeds during the inching exhaust process, and use it as historical data, obtain current torque data of the drive transposition when cranking, compare the current torque data with the historical data, and judge whether the diesel engine is in good condition based on the comparison result.

8. The diesel engine inching exhaust device according to claim 7, characterized in that: The industrial computer also includes a human-computer interaction interface provided with a module for the user to determine a preset speed to form a speed control instruction; the human-computer interaction interface is also used to display the speed data, torque data of the drive device and the diesel engine speed and its crankshaft torque in real time.

9. The diesel engine inching exhaust device according to claim 7, characterized in that: The industrial computer is also used to perform torque trend analysis based on the current torque data of the drive transposition during cranking and the historical data, and to determine whether there is an abnormality based on the obtained analysis results, and if so, to issue a corresponding alarm.

10. The diesel engine inching exhaust device according to claim 1, characterized in that: The industrial computer is also used to collect current data of the driver, and calculate the instantaneous torque according to the current data and display it in real time; or The industrial computer is also used to monitor the state of the driver, and determine whether there is an overload, overcurrent and / or overvoltage situation according to the state of the driver. If so, a corresponding alarm is issued.

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