CN111852639B - Environmentally friendly and intelligent cold chain logistics vehicle refrigeration generator set control system - Google Patents
Environmentally friendly and intelligent cold chain logistics vehicle refrigeration generator set control system Download PDFInfo
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- CN111852639B CN111852639B CN202010724172.9A CN202010724172A CN111852639B CN 111852639 B CN111852639 B CN 111852639B CN 202010724172 A CN202010724172 A CN 202010724172A CN 111852639 B CN111852639 B CN 111852639B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
- B60P3/20—Refrigerated goods vehicles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/10—Indicating devices; Other safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1473—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation method
- F02D41/1475—Regulating the air fuel ratio at a value other than stoichiometry
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
- F01P2005/025—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers using two or more air pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
本发明涉及制冷技术领域，公开了一种环保智能化冷链物流车制冷发电机组控制系统，包括由控制器控制的温控系统和发动机双风扇系统，控制器电连接有ECU，还包括由ECU控制的调速系统；冷藏箱向温控系统提供温度信息；发动机上的温度传感器向控制器传送温度信息，控制器根据发动机的温度信息，以判断发动机的温度，并向发动机双风扇系统发送调温指令；调速系统通过转速传感器获取发电机组的实际转速，控制器根据实际转速与设定目标转速的差异，根据差异大小来判断和调整转速在设定的范围内，并向ECU发送调速指令，ECU按照指令控制调速系统调速。本发明采用自控降温模式和低速运行降噪方式及冷藏箱自适应控温技术，实现了节约能源、保护环境的目的。
The invention relates to the technical field of refrigeration, and discloses a control system for a refrigeration generator set for an environmentally friendly and intelligent cold chain logistics vehicle. Controlled speed regulation system; the refrigerator provides temperature information to the temperature control system; the temperature sensor on the engine transmits temperature information to the controller, and the controller judges the temperature of the engine according to the temperature information of the engine, and sends the adjustment to the engine dual fan system. The speed control system obtains the actual speed of the generator set through the speed sensor, the controller judges and adjusts the speed within the set range according to the difference between the actual speed and the set target speed, and sends the speed control to the ECU The ECU controls the speed regulation system according to the command. The invention adopts the self-controlled cooling mode, the low-speed operation noise reduction mode and the self-adaptive temperature control technology of the refrigerating box, so as to realize the purpose of saving energy and protecting the environment.
Description
Technical Field
The invention relates to the technical field of refrigeration, in particular to a refrigeration generator set control system of an environment-friendly intelligent cold-chain logistics vehicle.
Background
Cold Chain Logistics generally refers to a system project that refrigerated and frozen food is always in a specified low-temperature environment in each link before consumption in production, storage, transportation and sale so as to ensure the quality of the food and reduce the loss of the food. It is established with the progress of science and technology and the development of refrigeration technology, and is a low-temperature logistics process based on refrigeration technology and by means of refrigeration technology.
At present, a domestic cold chain logistics vehicle mostly adopts diesel oil for power generation, a compressor provided for a refrigerating box is used for refrigerating, cooling and refreshing, and most of the cold chain logistics vehicles are common manual generator sets, and because the cold chain logistics vehicle cannot automatically supply power and cut off the power according to the power consumption requirement of the refrigerating box (the power is cut off and kept for a period of time when the refrigerating temperature is reached), the generator sets generate power for a long time, so that the waste of fuel is caused, and the service life of the generator sets is shortened; on the other hand, most of the domestic generator sets of the cold-chain logistics vehicles have large noise during operation, and the emission does not reach the standard.
Secondly, cooling is mostly performed by adopting a water cooling mode at present, namely, the cooling water tank is connected with the fan through an output shaft of the engine, the heat dissipation water tank is connected with the engine through a circulating water heat dissipation pipeline, the circulating water heat dissipation pipeline forms an integral loop, and the mechanical water pump drives water in the circulating water heat dissipation pipeline to circularly flow. When water in the water-cooled engine absorbs heat from the generator cylinder body and then flows back into the heat dissipation water tank, the temperature of the water is raised (the heat of the engine is conveyed out through the water), the main fan cools the water in the heat dissipation water tank, the water flowing back to the engine from the heat dissipation water tank can be guaranteed to be cooled, and the engine is kept in a reasonable temperature range. The method can be realized for the engine in normal temperature environment and stable load. However, the existing water cooling system has the following problems: the air quantity of the fan cannot be timely adjusted according to the change of the environmental temperature and the load, and when the load is large and the outside air temperature is high, the temperature of the engine rises rapidly, so that the engine is protected to stop or be damaged, and the engine cannot work continuously.
Disclosure of Invention
The invention aims to provide an environment-friendly intelligent control system for a refrigeration generator set of a cold-chain logistics vehicle, which is used for cooling an engine and further ensuring the normal refrigeration of the intelligent cold-chain logistics vehicle.
In order to achieve the purpose, the invention provides the following technical scheme: an environment-friendly intelligent control system for a refrigeration generator set of a cold-chain logistics vehicle comprises a temperature control system and an engine double-fan system which are controlled by a controller, wherein the controller is electrically connected with an ECU (electronic control unit), and the control system also comprises a speed regulating system controlled by the ECU; the temperature control system acquires temperature information of the refrigerating box, the controller judges the temperature of the refrigerating box according to the temperature information of the refrigerating box, the controller sends a temperature adjusting instruction to the temperature control system, and when the temperature of the refrigerating box reaches a preset range value, the controller sends a stop instruction to the engine and the generator; the engine double-fan system acquires temperature information of the engine, and the controller judges the temperature of the engine according to the temperature information of the engine and sends a temperature adjusting instruction to the engine double-fan system; the speed regulating system obtains the actual rotating speed of the generator, the controller judges the difference between the actual rotating speed of the generator and the target rotating speed according to the actual rotating speed, and sends a speed regulating instruction to the ECU, and after the ECU receives the speed regulating instruction, the ECU controls the speed regulating system to regulate the speed.
The principle and the beneficial effects of the invention are as follows: (1) in this scheme, through the regulation of engine double fan cooling system, can effectively reduce the temperature of engine to guarantee that the engine normally works, and then guarantee the generator and normally work, with normally supplying power to the fridge, make the refrigeration work of fridge normally go on. Meanwhile, the temperature of the refrigerating box is regulated and controlled by the temperature control system, so that the temperature in the refrigerating box reaches the refrigerating temperature.
(2) In the scheme, when the actual rotating speed and the target rotating speed are different, the controller controls the ECU to regulate the speed so as to eliminate the difference between the actual rotating speed and the target rotating speed, so that the actual rotating speed and the target rotating speed are basically consistent, and the generator is always in a normal working state within a preset range.
Further, the speed regulating system comprises a throttle valve and a gas injection system, the gas injection system acquires the actual air-fuel ratio of the engine, the controller judges whether the actual air-fuel ratio and the theoretical air-fuel ratio in the engine are different or not according to the actual air-fuel ratio, and the controller sends an instruction for adjusting the air-fuel ratio to the throttle valve and the gas injection system through the ECU.
Has the advantages that: the air-fuel ratio of the engine is adjusted through the fuel gas injection system, so that the engine can burn more fully, the engine can always keep the best dynamic property and economical efficiency, and the discharge amount of incompletely burnt gas in tail gas of the engine is greatly reduced.
Further, an ignition system controlled by the ECU is also included.
Has the advantages that: the ignition system ignites fuel in the engine at an optimal timing.
The charging system obtains voltage information of the storage battery, and the controller judges whether the voltage of the storage battery reaches a preset range value according to the voltage information of the storage battery.
Has the advantages that: the work of controller, ECU and engine all needs the storage battery power supply to guarantee the normal clear of work, detect the voltage information of storage battery through charging system and controller, in order to obtain the voltage information of storage battery.
And further, the system also comprises a safety protection system, and the controller sends a shutdown command to the engine and the generator through the safety protection system.
Has the advantages that: the safety protection system sends a stop instruction to the engine and the generator, and the generator set is sequentially delayed to stop according to a set stop program under the control of the control system, so that emergency stop is avoided, the stop safety of the generator and the engine is protected, and the damage probability of the generator and the engine is reduced.
Further, the controller is connected with a display.
Has the advantages that: the controller can display information such as current, voltage, frequency, engine speed, charging voltage, faults and the like through the display, so that an operator can conveniently observe specific working numerical values.
Further, the controller is electrically connected with a buzzer for alarming.
Has the advantages that: when a buzzer alarms, the alarm device can remind an operator of occurrence of a fault and timely eliminate the fault.
Further, the voltage detection system comprises a voltage detection module, the voltage detection module acquires voltage information of the output voltage of the generator, the controller judges whether the output voltage of the generator reaches a preset range value or not according to the voltage information, if the output voltage of the generator does not reach the preset range value, the controller can judge that the output voltage of the generator fails, the controller can control the buzzer to work, and the controller displays the voltage failure information through the display.
Has the advantages that: the voltage of detection generator output to guarantee that the generator reaches the requirement to the supply voltage of fridge, and then guarantee that the fridge can normally work, simultaneously, when the output voltage of generator broke down, report to the police through the buzzer, the display shows the fault state, and the operating personnel of being convenient for in time gets rid of the trouble.
Further, the detection system comprises a current detection module, the current detection module acquires current information of the output current of the generator, the controller judges whether the output current of the generator reaches a preset range value or not according to the voltage information, if the output current of the generator does not reach the preset range value, the controller can judge that the output current of the generator fails, the controller can control the buzzer to work, and the controller displays current failure information through the display.
Has the advantages that: the current of detection generator output to guarantee that the generator reaches the requirement to the supply current of fridge, and then guarantee that the fridge can normally work, when the output current of generator broke down, report to the police through the buzzer, and the display shows the fault location, and the operating personnel of being convenient for in time gets rid of the trouble.
The oil pressure sensor is connected with the ECU, the oil pressure sensor acquires oil pressure information of lubricating oil of the engine, the ECU acquires the oil pressure information and sends the oil pressure information to the controller, the controller judges whether the oil pressure of the lubricating oil of the engine reaches a preset range value or not according to the oil pressure information, and if the oil pressure of the lubricating oil of the engine does not reach the preset range value, the controller sends a working instruction to the buzzer and displays oil pressure fault information through the display.
Has the advantages that: for the engine, whether the engine works normally or not can be determined according to the oil pressure information of the lubricating oil of the engine, whether the engine works in a fault or not can be judged by the controller according to the oil pressure information, and if the engine works in a fault, the specific fault is displayed through the displayer, so that an operator can timely get rid of the fault.
Drawings
Fig. 1 is a system diagram of a refrigeration generator set control system of an environment-friendly intelligent cold-chain logistics vehicle according to an embodiment of the invention;
fig. 2 is an axonometric view of a refrigerating generator set of the environment-friendly intelligent cold-chain logistics vehicle in the second embodiment of the invention;
fig. 3 is a front view of a second chassis according to a second embodiment of the present invention;
fig. 4 is a top view of a second enclosure according to a second embodiment of the invention;
FIG. 5 is a left side view of FIG. 4;
FIG. 6 is a right side view of FIG. 4;
FIG. 7 is a view taken along line A of FIG. 6;
FIG. 8 is an isometric view of a drive mechanism according to a second embodiment of the invention;
FIG. 9 is a front view of the present invention with the drive mechanism mounted in the chassis (the front panel of the chassis is omitted);
FIG. 10 is a sectional view taken along line B-B of FIG. 9;
FIG. 11 is a front view of a third enclosure in accordance with an embodiment of the present invention;
fig. 12 is an enlarged view of a portion C of fig. 11.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a case 1, a front plate 11, a cover plate 12, heat dissipation holes 13, hanging lugs 2, a hanging plate 21, a main connecting hole 22, an auxiliary connecting hole 23, a baffle plate 24, a rear beam 25, a screw rod 3, a bearing 31, an end plate 32, a rotating arm 33, a pin shaft 34, a connecting groove 35, a sleeve plate 36, a sliding frame 4, a guide rail 41, a gas engine 5, a generator 51, a control box 6, a screw rod 61, a hanging plate 62, a shock pad 63, a mounting lug 64, a support 7, a rubber part 71, a hook 72, a silencer 73, an exhaust pipe 74, a battery jar 8, a mechanical fan 9 and a water tank 10.
The first embodiment is as follows:
basically, as shown in the attached figure 1, the refrigerating generator set control system of the environment-friendly intelligent cold-chain logistics vehicle comprises a temperature control system, an engine double-fan system and a safety protection system which are controlled by a controller, and further comprises a speed regulation system and an ignition system which are controlled by an ECU (electronic control Unit), wherein the controller is electrically connected with a display and a buzzer. The generator set in the embodiment is composed of a gas engine and a generator.
The temperature control system comprises a temperature sensor for acquiring temperature information in the refrigerator, the controller judges whether the temperature information reaches a preset range value according to the temperature information, and the assumed preset value is as follows: and 18 ℃ below zero to 15 ℃ below zero, when the controller judges that the temperature information reaches a preset range value, the controller sends a stop instruction to the safety protection system, the safety protection system controls the gas engine and the generator to be gradually closed, the temperature in the refrigerating box is kept in a refrigerating range within a period of time, and the gas engine and the generator do not need to work so as to achieve the purpose of saving energy. The gas engine and the generator are gradually closed through the safety protection system so as to achieve the purpose of protecting the gas engine and the generator. When the temperature sensor sends the temperature information to the controller, the temperature information is higher than the upper limit of the preset range value, and the controller can restart the gas-making engine and the generator.
After a period of time, assume: after 20 ~ 30min, the temperature information that the controller acquireed does not reach preset range value, and the fridge breaks down can be judged to the controller, and the controller can send the operating instruction to bee calling organ, and bee calling organ can report to the police to through the fault information of display show fridge, when the fridge work is normal, the controller also can show cold-stored temperature through the display, makes the fridge reach self-adaptation temperature's purpose through temperature control system.
The engine double-fan system comprises a temperature module for acquiring temperature information of the gas engine, the temperature module in the embodiment is also a temperature sensor, and the controller judges the working temperature of the engine according to the temperature information of the gas engine. If the controller judges that the working temperature of the gas engine is higher than the upper limit of the preset range value, the preset range value is assumed to be 70-90 ℃, and the upper limit temperature is as follows: at 90 ℃, the controller sends a working instruction to the engine double-fan cooling system, and the reference bulletin numbers are as follows: CN205977376U utility model. The double-fan cooling system of the engine can adjust the working temperature of the gas engine, and further ensure the normal operation of the gas engine.
If the temperature information acquired by the temperature sensor after a period of time is as follows: and if the temperature is 100 ℃, the controller can judge that the gas engine works abnormally according to the temperature information, the controller can control the buzzer to work, and the controller displays the fault information of the gas engine through the display. Meanwhile, the controller controls the gas engine and the generator to stop gradually through the safety protection system so as to ensure the safety of the gas engine and the generator.
The speed regulating system comprises a rotating speed sensor for acquiring the actual rotating speed of the generator, the controller judges the difference between the actual rotating speed and the target rotating speed according to the actual rotating speed, and the actual rotating speed and the target rotating speed are different, and the assumption is that: the difference is +/-20 r/min, if the difference exceeds the upper difference limit or is lower than the lower difference limit, the controller sends a speed regulating instruction to the ECU, the controller sends an instruction to the speed regulating system through the ECU, the speed regulating system in the embodiment comprises a gas injection system and a throttle valve, the throttle valve in the embodiment is an electronic throttle valve, the speed regulating system sends a working instruction to the gas injection system and the throttle valve, the gas injection system adjusts the gas quantity entering the gas engine, the opening degree of the throttle valve is adjusted, the air quantity entering the gas engine is adjusted, the working power of the gas engine is changed, the actual rotating speed of the generator is adjusted, and the ECU sends a speed regulating instruction to the speed regulating system. After a period of time, if the actual rotating speed of the generator is still different from the target rotating speed, the controller can judge that the generator breaks down, the controller can control the buzzer to work, and the controller can display the fault information of the generator through the display.
Still include detecting system, detecting system includes voltage detection module and current detection module, and current detection module and voltage detection module detect the current information and the voltage information of generator output, and the controller can judge whether the current information and the voltage information of generator output reach preset range value according to current information and voltage information, and the scope value is predetermine to the hypothesis: the voltage is 200-220V, the current is 10A-20A, if the current information and the voltage information do not reach the preset range value, the controller can judge the working fault of the generator, the controller can control the buzzer to work, and the controller displays the fault information of the generator through the display screen.
The gas injection system further comprises an oxygen sensor ECU for acquiring the actual air-fuel ratio of the gas engine to acquire the actual air-fuel ratio so as to judge whether the actual air-fuel ratio and the theoretical air-fuel ratio of the gas engine are different, and when the actual air-fuel ratio and the theoretical air-fuel ratio are different, the ECU sends an instruction for adjusting the air-fuel ratio to the gas injection system. The air-fuel ratio of the engine is adjusted through the gas injection system, so that the engine can burn more fully, the gas engine can always keep the best dynamic property and economical efficiency, and the discharge amount of incompletely burnt gas in tail gas of the engine is greatly reduced. The ECU can control the ignition system to ignite the gas entering the gas engine at the best time, the ignition system improves the gas combustion in the gas engine, and the ignition system is not described in detail in the prior art.
ECU electricity is connected with oil pressure sensor, and oil pressure sensor acquires the oil pressure information of gas engine lubricating oil, and the controller acquires oil pressure information through ECU to judge whether gas engine's oil pressure reaches preset range value, when gas engine's oil pressure information does not reach preset range value, the controller can judge gas engine's oil pressure trouble, then can send the operating instruction to bee calling organ, and show gas engine oil pressure trouble information through the display.
The intelligent cold chain logistics car refrigerating generator set control system of environmental protection still includes charging system, with gas engine, the storage battery that the equal electricity of controller and ECU is connected, charging system is including the voltage sensor who acquires the storage battery voltage, voltage sensor is the battery IBS sensor in this embodiment, the storage battery is to gas engine, ECU power supply and controller power supply, voltage sensor acquires the voltage information of storage battery, the controller reaches the scope value of predetermineeing in order to judge the voltage of storage battery according to the voltage information of storage battery, and show through the display. When the battery voltage information does not reach the preset range value, the controller can judge that the battery voltage breaks down, the controller can send a working instruction to the buzzer, and the controller displays the fault information through the displayer.
When the control system of the refrigeration generator set of the environment-friendly intelligent cold-chain logistics vehicle does not break down, the rotation speed information, the oil pressure information, the temperature information and the like of the generator can pass through the display, so that the operator can observe the control system conveniently.
When the control system of the refrigerating generator set of the environment-friendly intelligent cold-chain logistics vehicle does not break down, the controller displays current information, voltage information, the actual rotating speed of the generator, the temperature information of the refrigerating box, oil pressure information and the voltage information of the storage battery through the display.
Example two:
the difference between the second embodiment and the first embodiment is that the control system of the environment-friendly intelligent cold-chain logistics vehicle refrigeration generator set is applied to the environment-friendly intelligent cold-chain logistics vehicle refrigeration generator set, and basically as shown in the attached drawings 2 and 3, the control system comprises a case 1 with a rectangular longitudinal section. The top of the chassis 1 is open, the chassis 1 includes a rectangular frame, a bottom plate, a back plate and two side plates are fixed on the frame through bolts, a front plate 11 is hinged through hinges, and the front plate 11 is used for closing an opening (not shown in the figure) on the front side of the frame. All seted up louvre 13 on two curb plates of quick-witted case 1, dispel the heat to quick-witted case 1 inside through louvre 13. The front panel 11 is hinged to the frame to facilitate opening of the enclosure 1. The front plate 11 is provided with an observation window, and a transparent cover plate 12 is fixed through bolts, so that the condition inside the case 1 can be observed through the cover plate 12.
The both sides of machine case 1 all are provided with hangers 2 that longitudinal section is L shape, and the vertical portion and the frame welding of hangers 2, and the horizontal straight portion of hangers 2 all is located the top of vertical portion. The top parts of the two hanging lugs 2 are integrally formed with baffle plates 24, and a back beam 25 is welded between the two baffle plates 24. The hanging device further comprises two hanging plates 21 which are used for being matched with the hanging lugs 2 and have L-shaped longitudinal sections, and baffle plates 24 are vertically and integrally formed at the tops of the two hanging plates 21. Connecting holes are formed in the hanging lug 2 and the hanging plate 21 and comprise a main connecting hole 22 and an auxiliary connecting hole 23, the main connecting hole 22 is formed in the horizontal straight portion (the horizontal straight portion in the figure 1) of the hanging lug 2 and the hanging plate 21, the auxiliary connecting hole 23 is formed in the vertical portion of the hanging lug 2 and the hanging plate 21, and the main connecting hole 22 and the auxiliary connecting hole 23 are arranged in a staggered mode in the front-back direction of the case 1. During installation, the hanging plate 21 is fixed on an automobile in a state shown in the attached drawing 2, the hanging lugs 2 are buckled and hung on the hanging plate 21, and then workers can install bolts in the main connecting holes 22 and the auxiliary connecting holes 23 to fixedly connect the hanging lugs 2 and the hanging plate 21, so that the installation of the whole structure is realized. This embodiment is through the cooperation of hangers 2 and link plate 21, hangs whole quick-witted case 1 on link plate 21 during the installation, compares among the prior art from the side alignment connecting hole, is convenient for adjust and install, and the installation is simple swift and efficient. In addition, a main connecting hole 22 and an auxiliary connecting hole 23 are arranged, and the main connecting hole 22 limits the vertical displacement of the case 1; the auxiliary connecting holes 23 limit the left and right displacement of the case 1, and the connecting strength is increased.
As shown in fig. 4, 8, 9 and 10, two guide rails 41 are installed at the bottom of the chassis 1, the two guide rails 41 are arranged in parallel, and the two guide rails 41 are arranged along the front-back direction of the chassis 1. A sliding frame 4 is slidably connected to the guide rail 41, and a driving mechanism for driving the sliding frame 4 to slide left and right is connected to the sliding frame 4. The driving mechanism comprises a screw rod 3, a sleeve plate 36 is connected to the screw rod 3 in a threaded mode, the bottom of the sleeve plate 36 is fixedly connected with a connecting seat through a bolt, and the connecting seat is fixedly connected with the case 1 through a bolt. The screw rod 3 is also rotatably connected with two end plates 32 through a bearing 31, and two sides of the two end plates 32 are both fixed with retaining rings to prevent the end plates 32 from axially shifting on the screw rod 3; two end plates 32 are arranged on two sides of the sleeve plate 36, and the two end plates 32 are respectively fixed on two sides of the bottom of the sliding frame 4 through bolts. The left end of the screw rod 3 is detachably connected with a rotating arm 33 used for driving the screw rod to rotate, specifically, the rotating arm 33 comprises a sleeve and a handle fixed at the left end of the sleeve, a connecting groove 35 is formed in the right end of the sleeve, and a pin shaft 34 capable of being clamped into the connecting groove 35 is welded on the screw rod 3. The sleeve is sleeved on the screw rod 3, so that the pin shaft 34 is clamped in the connecting groove 35, and the rotating arm 33 can be connected with the screw rod 3. When the sliding frame is used, the front plate 11 is rotated upwards, the screw rod 3 is driven to rotate through the rotating arm 33, and the sliding frame 4 is driven to slide outwards through the screw rod 3 through the end plate 32.
As shown in fig. 4, a generator set composed of a gas engine 5 and a generator 51 is fixed on the sliding frame 4 by bolts, the generator 51 is a brushless phase compound excitation generator with four-level windings or a brushless generator with rare earth permanent magnet with four-level windings, in this embodiment, the generator 51 is a brushless generator with rare earth permanent magnet, and the rotation speed of the generator 51 is 1500-1800 r/s. The gas engine 5 is provided with an engine double-fan cooling system, and the reference bulletin numbers are as follows: CN205977376U utility model. A power supply battery 8 and a water tank 10 of the engine double-fan refrigerating system are both fixed on the sliding frame 4 through bolts, and a mechanical fan 9 is fixed on an output shaft of the gas transmitter through bolts. When the working temperature of the generator set is raised to a certain degree, the engine double-fan refrigerating system cools the gas engine 5 and simultaneously cools the inside of the case 1.
As shown in fig. 5, 6 and 7, a muffler system is mounted on the back plate of the chassis 1, the muffler system includes a hanging part and a muffler 73, the hanging part is used for mounting the muffler 73 equipped to the generator 51, the hanging part includes an L-shaped bracket 7, and the vertical part of the bracket 7 is welded on the frame of the chassis 1, and the horizontal part is located above. The rubber piece 71 is fixed on the transverse straight part of the bracket 7 through a bolt, and a hanging hole is formed in the rubber piece 71. The muffler 73 is communicated with the exhaust port of the generator 51, the hook 72 is welded to the muffler 73, and the exhaust pipe 74 communicated with the outside is communicated with the muffler 73. When the silencing mechanism is installed: the muffler 73 is transversely placed beside the two supports 7, and the hook 72 is hooked in the hanging hole of the rubber part 71, so that the muffler 73 can be hung; the rubber piece 71 is connected with the silencer 73, so that the influence of vibration transmission of the silencer 73 on the generator set can be reduced, the structure is simple, and the assembly is convenient.
If appear in the intelligent cold chain logistics car refrigerating generator set control system of environmental protection, be convenient for maintain the maintenance to generating set through the intelligent cold chain logistics car refrigerating generator set of environmental protection, guarantee the continuous refrigeration of fridge.
Example three:
the difference between the third embodiment and the second embodiment is that, as shown in fig. 11 and 12, a connection assembly is installed on the front side of the chassis 1, the connection assembly is used for installing the control box 6, and the control box 6 is used for controlling the work of the generator set. The connecting assembly comprises two hanging plates 62 and a shock pad 63 with two screws 61, and the two hanging plates 62 are vertically welded on the frame; the left and right sides is fixed with the installation ear 64 on control box 6, has all seted up the screw on hanger plate 62 bottom and the installation ear 64, through with two screw rods 61 on the shock pad 63 respectively through the screw nut locking in the screw hole on hanger plate 62 and installation ear 64, can realize control box 6's installation.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make several variations and modifications without departing from the concept of the present invention, and these should be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent. The techniques, shapes, and structural parts, which are omitted from the description of the present invention, are all known techniques.
Claims (10)
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| CN116696580A (en) * | 2023-06-08 | 2023-09-05 | 一汽解放汽车有限公司 | Engine speed control method and control device of refrigerated vehicle and refrigerated vehicle |
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