Fire engine coupling box cooling and lubricating system based on vehicle driving

Abstract

The utility model discloses a fire engine coupling box cooling and lubricating system based on vehicle driving has the coupling box, still is equipped with the water cooling and lubricating circuit of beating, the water cooling and lubricating circuit of beating includes auxiliary oil pump and oil pump drive mechanism, the auxiliary oil pump drives and sucks the oil hole of the coupling box input drive shaft department to the lubricating oil in the coupling box oil sump through oil pump drive mechanism, the utility model has the advantages of good cooling and lubricating effect etc.

Description

Technical Field

[0001] This utility model relates to the field of fire truck technology, specifically a cooling and lubrication system for a fire truck coupling box based on vehicle movement. Background Technology

[0002] Airport fire trucks are core equipment for emergency rescue in aviation accidents. Their performance and reliability are directly related to the safety of life and property. As the power hub of such fire trucks, the coupling box undertakes the key functions of power distribution and mode switching, and its stable operation is of utmost importance.

[0003] In vehicle driving mode, the engine's power is transmitted through the input drive shaft of the coupling box, and then output to the vehicle's drive axle after being transmitted through a multi-stage gear transmission pair inside the box, driving the fire truck. In this mode, lubrication and heat dissipation mainly rely on splash lubrication and natural air convection cooling. However, under high-speed, heavy-load, or high-temperature environments, this passive heat dissipation method is inefficient and can easily lead to a continuous rise in lubricating oil temperature. Excessive oil temperature will cause the lubricating oil viscosity to decrease, deteriorate lubrication performance, accelerate the wear of gears and bearings, and in extreme cases, may even cause serious failures such as sintering and seizing. Sustained high temperature can also cause the seals to age and fail, resulting in lubricating oil leakage.

[0004] After the fire truck arrives at the fire scene, it needs to switch to parking water-operating mode. At this time, the engine's power is directly driven by the input shaft through the coupling box to provide high-pressure, high-flow-rate fire-fighting water. The engine is at high speed to drive the water pump, but except for the input shaft and its associated gears, the other transmission gears in the coupling box are stationary. This causes the splash lubrication mechanism to fail, resulting in poor oil circulation. The huge power transmitted by the engine will generate concentrated heat on the high-speed rotating input shaft system. Due to the stagnant oil circulation, the heat cannot be effectively dissipated, causing the oil temperature in the coupling box to rise sharply. High temperature will cause the lubricating oil viscosity to decrease, the lubrication performance to deteriorate, the wear of gears and bearings to accelerate, and the life of parts to be significantly shortened. In extreme cases, local overheating may cause sintering or jamming of the metal surface of gears or bearings, causing the fire-fighting system to be paralyzed at critical moments. At the same time, continuous high temperature will accelerate the aging and failure of seals, resulting in lubricating oil leakage. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a cooling and lubrication system for a fire truck coupling box with good cooling and lubrication effects based on vehicle movement.

[0006] The technical solution adopted by this utility model to solve its technical problem is: A fire truck coupling box cooling and lubrication system based on vehicle movement, comprising a coupling box, characterized in that: it also comprises a driving cooling and lubrication circuit, the driving cooling and lubrication circuit comprising a built-in oil pump and a radiator, the built-in oil pump being located inside the coupling box and driven by a drive shaft inside the coupling box to draw lubricating oil from the oil pan of the coupling box to the radiator for cooling and then to the oil hole of the coupling box. With the built-in oil pump and radiator working together, the lubricating oil can be reliably delivered to key components for lubrication while the vehicle is in motion. At the same time, through continuous oil circulation and heat dissipation from the radiator, the heat generated in the coupling box can be carried away in a timely and effective manner, avoiding various malfunctions caused by lubrication failure and overheating.

[0007] The driving cooling and lubrication circuit of this utility model also includes an oil outlet pipe and an oil inlet pipe. One end of the oil outlet pipe is connected to the oil outlet of the built-in oil pump, and the other end is connected to the oil inlet of the radiator. One end of the oil inlet pipe is connected to the oil outlet of the radiator, and the other end is connected to the oil hole of the coupling box.

[0008] The coupling box of this utility model has a number of oil holes, and the oil outlet of the radiator is connected to a number of oil inlet pipes via a multi-port connector, with each oil inlet pipe connected to a corresponding oil hole. This allows oil to enter through multiple oil holes in the coupling box, further ensuring the cooling and lubrication effect.

[0009] The oil inlet of the radiator described in this utility model is located at the bottom of the radiator, and the height of the oil inlet is the same as the height of the oil pan of the coupling box; when the built-in oil pump stops working, it prevents the lubricating oil from flowing freely due to the liquid level difference and stabilizes the oil distribution when the system is stopped.

[0010] This utility model also includes a water-cooling and lubrication circuit, which includes an auxiliary oil pump and an oil pump drive mechanism. The auxiliary oil pump is driven by the oil pump drive mechanism to draw lubricating oil from the oil pan of the coupling box and send it to the oil hole at the input drive shaft of the coupling box.

[0011] The water cooling and lubrication circuit of this utility model also includes an oil outlet pipe and an oil inlet pipe. One end of the oil outlet pipe is connected to the oil pan of the coupling box, and the other end is connected to the oil inlet of the auxiliary oil pump. One end of the oil inlet pipe is connected to the oil outlet of the auxiliary oil pump, and the other end is connected to the oil hole at the input drive shaft of the coupling box.

[0012] The coupling box of this utility model is provided with an input drive shaft one and an input drive shaft two. The input drive shaft one is connected to a drive power source one, and the input drive shaft two is connected to a drive power source two. In the dual-engine drive mode, the power from drive power source one is combined in the coupling box via input drive shaft one and the power from drive power source two is combined to drive the vehicle. Alternatively, in single-engine drive mode, the power from drive power source one is transmitted to the coupling box via input drive shaft one or the power from drive power source two is transmitted to input drive shaft two to drive the vehicle. Alternatively, in the driving water-spraying mode, the power from the first driving power source is transmitted to the coupling box via the first input drive shaft to drive the vehicle, and the power from the second driving power source is transmitted to the water pump via the second input drive shaft for firefighting operations. Alternatively, in the parking water pumping mode, the power from drive power source two is transmitted to the water pump via input transmission shaft two for firefighting operations, while drive power source one is in a stopped or idling state.

[0013] The lubricating oil in the driving cooling and lubrication circuit of this utility model is cooled by the radiator and then sent to the oil hole at one point on the input drive shaft and the oil hole at the other point on the input drive shaft on the coupling box.

[0014] The lubricating oil in the water-cooling and lubrication circuit of this invention is sent to the oil holes at the input drive shaft on the coupling box after being pumped by an auxiliary oil pump.

[0015] The coupling box of this invention is equipped with a temperature sensor, which is connected to the controller.

[0016] The beneficial effects of this utility model are as follows: The driving cooling and lubrication circuit, with its built-in oil pump and radiator, ensures that lubricating oil is reliably delivered to key components for lubrication when the vehicle is in motion. At the same time, through continuous oil circulation and radiator heat dissipation, the heat generated in the coupling box can be carried away in a timely and effective manner, avoiding various malfunctions caused by lubrication failure and overheating. The water cooling and lubrication circuit, through an independent pressure oil circuit, can solve the problems of splash lubrication failure and heat dissipation stagnation under parking water conditions. It not only ensures that the key friction pairs at the input drive shaft can be adequately lubricated, but also carries away the heat accumulated in the coupling box in a timely manner through continuous oil circulation, effectively controlling the oil temperature and avoiding various malfunctions caused by excessive oil temperature. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the coupling box cooling and lubrication system of this utility model.

[0018] Figure 2 This is a schematic diagram of the overall structure of the coupling box cooling and lubrication system of this utility model from another angle.

[0019] Figure label: Coupling box-1, oil pan-101, input drive shaft one-102, input drive shaft two-103, oil hole one-104, oil hole two-105, oil hole three-106, oil hole four-107, oil hole five-108, internal oil passage-109; Radiator-201, Radiator mounting bracket-202, Oil outlet pipe 1-203, Oil outlet pipe 2-204, T-connector-205, Oil inlet pipe 1-206, Oil inlet pipe 2-207, Built-in oil pump-208; Motor-301, Auxiliary oil pump-302, Oil outlet pipe three-303, Oil outlet pipe four-304, Four-way connector-305, Oil inlet pipe three-306, Oil inlet pipe four-307, Oil inlet pipe five-308; Temperature sensor-4. Detailed Implementation

[0020] The present invention will now be described in conjunction with the accompanying drawings and embodiments.

[0021] As shown in the attached figure, a fire truck coupling box cooling and lubrication system based on vehicle movement is provided, which includes a coupling box 1 and a driving cooling and lubrication circuit. The driving cooling and lubrication circuit includes a built-in oil pump 208 and a radiator 201 located outside the coupling box. The built-in oil pump 208 is located inside the coupling box 1 and is driven by the transmission shaft inside the coupling box to draw lubricating oil from the oil pan 101 of the coupling box to the radiator 201 for heat dissipation and then send it to the oil hole of the coupling box. The driving cooling and lubrication circuit, with its built-in oil pump and radiator, ensures that lubricating oil is reliably delivered to key components for lubrication while the vehicle is in motion. At the same time, through continuous oil circulation and radiator cooling, the heat generated in the coupling box can be carried away in a timely and effective manner, avoiding various malfunctions caused by lubrication failure and overheating.

[0022] This embodiment also includes a water-cooling and lubrication circuit, which includes an auxiliary oil pump 302 and an oil pump drive mechanism located outside the coupling box. The auxiliary oil pump 302 is driven by the oil pump drive mechanism to draw lubricating oil from the oil pan 101 of the coupling box 1 and send it to the oil hole at the input drive shaft of the coupling box. The water-cooling lubrication circuit, through an independent pressure oil circuit, can solve the problems of splash lubrication failure and heat dissipation stagnation under the condition of water spraying while parked. It not only ensures that the key friction pairs at the input drive shaft can be adequately lubricated, but also can carry away the heat accumulated in the coupling box in time through continuous oil circulation, effectively controlling the oil temperature and avoiding various failures caused by excessive oil temperature.

[0023] The driving cooling and lubrication circuit and the water cooling and lubrication circuit are two independent cooling and lubrication circuits. In this embodiment, both the driving cooling and lubrication circuit and the water cooling and lubrication circuit are provided. Alternatively, only the driving cooling and lubrication circuit or the water cooling and lubrication circuit can be provided according to the actual operating needs of the vehicle.

[0024] The driving cooling and lubrication circuit also includes an oil outlet pipe and an oil inlet pipe. One end of the oil outlet pipe is connected to the oil outlet of the built-in oil pump 208, and the other end is connected to the oil inlet of the radiator 201. One end of the oil inlet pipe is connected to the oil outlet of the radiator 201, and the other end is connected to the oil hole of the coupling box.

[0025] In this embodiment, the oil outlet pipe of the cooling and lubrication circuit includes an oil outlet pipe 1 203, an oil outlet pipe 204, and an internal oil pipe of the coupling box (not shown in the figure). The oil inlet pipe includes an oil inlet pipe 1 206 and an oil inlet pipe 207. One end of the internal oil pipe is connected to the oil pan 101 of the coupling box, and the other end is connected to the oil inlet of the built-in oil pump 208. One end of the oil outlet pipe 1 203 is connected to the oil outlet of the built-in oil pump 208, and the other end is connected to the oil inlet of the cooling circulation pipe set inside the radiator. One end of the oil outlet pipe 204 is connected to the oil outlet of the cooling circulation pipe set inside the radiator, and the other end is connected to the first connector of the three-way connector 205. One end of the oil inlet pipe 1 206 is connected to the second connector of the three-way connector 205, and one end of the oil inlet pipe 207 is connected to the third connector of the three-way connector 205. The other ends of the oil inlet pipe 1 206 and the oil inlet pipe 207 are connected to the oil hole of the coupling box.

[0026] The oil inlet of the radiator 201 is located at the bottom of the radiator 201, and the height of the oil inlet of the radiator 201 is the same as the height of the oil pan 101 of the coupling box; when the built-in oil pump 208 stops working, it prevents the lubricating oil from flowing freely due to the liquid level difference and stabilizes the oil distribution when the system is stopped.

[0027] In this embodiment, the radiator 201 is fixed on the radiator mounting bracket 202, and the radiator mounting bracket 202 is fixed on the vehicle chassis.

[0028] The water cooling and lubrication circuit also includes an oil outlet pipe and an oil inlet pipe. One end of the oil outlet pipe is connected to the oil pan 101 of the coupling box, and the other end is connected to the oil inlet of the auxiliary oil pump 302. One end of the oil inlet pipe is connected to the oil outlet of the auxiliary oil pump 302, and the other end is connected to the oil hole at the input drive shaft of the coupling box.

[0029] In this embodiment, the oil outlet pipe of the water cooling lubrication circuit includes oil outlet pipe three 303 and oil outlet pipe four 304, and the oil inlet pipe includes oil inlet pipe three 306, oil inlet pipe four 307 and oil inlet pipe five 308. One end of oil outlet pipe three 303 is connected to the oil pan 101 of the coupling box, and the other end is connected to the oil inlet of the auxiliary oil pump 302. One end of oil outlet pipe four 304 is connected to the oil outlet of the auxiliary oil pump 302, and the other end is connected to the connector one of the four-way connector 305. One end of oil inlet pipe three 306 is connected to the connector two of the four-way connector 305. One end of oil inlet pipe four 307 is connected to the connector three of the four-way connector 305. One end of oil inlet pipe five 308 is connected to the connector four of the four-way connector 305. The other ends of oil inlet pipe three 306, oil inlet pipe four 307 and oil inlet pipe five 308 are respectively connected to the oil hole at the input drive shaft of the coupling box.

[0030] In this embodiment, the oil pump drive mechanism uses motor 301 to drive the auxiliary oil pump. The oil pump drive mechanism can also use a hydraulic drive motor as needed.

[0031] The coupling box 1 is provided with an input drive shaft 102 and an input drive shaft 103. The input drive shaft 102 is connected to a drive power source 1, and the input drive shaft 103 is connected to a drive power source 2. In the dual-engine drive mode, the power from drive power source one is combined in the coupling box via input drive shaft one 102 and the power from drive power source two is combined via input drive shaft two 103 to drive the vehicle together. In single-engine drive mode, the power from drive power source one is transmitted to the coupling box via input drive shaft one 102 or the power from drive power source two is transmitted to input drive shaft two 103 to drive the vehicle, while the other drive power source is in a stopped or idling state. In the driving water-spraying mode, the power of the first driving power source is transmitted to the coupling box via the first input drive shaft 102 to drive the vehicle, and the power of the second driving power source is transmitted to the water pump via the second input drive shaft 103 to carry out fire fighting operations. In the parking water pumping mode, the power of the second drive power source is transmitted to the water pump through the second input drive shaft 103 for fire fighting, while the first drive power source is in a stopped or idling state. It enables switching between different working modes.

[0032] In this embodiment, the fire truck is driven by a dual-engine, dual-transmission power system. Drive power source one uses an engine with transmission D1+T1, and drive power source two uses an engine with transmission D2+T2. Drive power sources one and two engage with the input drive shaft via clutches. The coupling box is equipped with clutches C1, C2, and C3. Clutch C1 controls the engagement or disengagement of the engine-driven transmission D2+T2 via the input drive shaft 103 with the transmission mechanism within the coupling box, thus switching power to the water pump. Clutch C2 controls the engagement or disengagement of the engine-driven transmission D2+T2 via the input drive shaft 103 with the transmission mechanism within the coupling box, thus switching power to the vehicle drive shaft. Clutch C3 controls the engagement or disengagement of the engine-driven transmission D1+T1 via the input drive shaft 102 with the transmission mechanism within the coupling box, thus switching power to the vehicle drive shaft.

[0033] The coordination between the dual engines, dual transmissions, and coupling box, as well as the control of clutch engagement and disengagement in this application, can be referenced in the previously filed patent "CN202511445719.0 Fire Truck Coupling Box Mode Selection Control System".

[0034] The lubricating oil in the driving cooling and lubrication circuit is cooled by the radiator 201 and then sent to the oil holes at the input drive shaft 102 and the input drive shaft 103 on the coupling box, respectively, to ensure that the lubricating oil is reliably delivered to the key components for lubrication when the vehicle is in motion. At the same time, through continuous oil circulation and radiator cooling, the heat generated in the coupling box can be carried away in a timely and effective manner.

[0035] The lubricating oil in the water-cooling and lubrication circuit is sent to the oil hole at the input drive shaft 103 on the coupling box after being pumped by the auxiliary oil pump 302; this ensures that the lubricating oil is reliably delivered to the key components for lubrication during firefighting operations of the fire truck, and the heat generated in the coupling box can be carried away in a timely and effective manner through continuous oil circulation.

[0036] In this embodiment, an oil hole 104 is provided at the input drive shaft 102 on the coupling box 1, and oil holes 105, 106, 107, and 108 are provided at the input drive shaft 203. The positions of oil holes 105, 106, 107, and 108 are distributed at the input drive shaft 2 according to actual needs. The oil inlet pipe 206 of the driving cooling lubrication circuit is connected to oil hole 104, the oil inlet pipe 207 is connected to oil hole 105, the oil inlet pipe 306 of the water cooling lubrication circuit is connected to oil hole 306, the oil inlet pipe 307 is connected to oil hole 407, and the oil inlet pipe 308 is connected to oil hole 5108.

[0037] The coupling box 1 is equipped with a temperature sensor 4, which is connected to the controller. The temperature sensor 4 is set up to sense the temperature inside the coupling box in real time and realize intelligent control.

[0038] In this embodiment, temperature sensors 4 are installed on both the oil pan 101 and the upper input drive shaft on the coupling box.

[0039] In this embodiment, the radiator 201 and the motor 301 are controlled by a controller. The controller is an ECU controller, but a PLC controller, VCU controller or MCU controller can also be used as needed. The controller can accurately determine the current operating condition of the vehicle (whether it is in dual-engine drive mode, single-engine drive mode, parking water pump mode or driving water pump mode) based on the received vehicle handbrake signal, gearbox gear signal and water pump power take-off signal.

[0040] In this embodiment, the heat sink 201 uses an electric fan.

[0041] In this embodiment, the internal transmission mechanism of the coupling box includes meshing gear sets, gear shafts, etc. Those skilled in the art will understand that the specific configuration of the gears and gear shafts can be changed and arranged in various ways depending on the position of the input and output shafts.

[0042] In this embodiment, the position of the built-in oil pump 208 is set according to actual needs. The selection of the drive shaft connected to the built-in oil pump 208 needs to meet the requirements of being able to rotate in dual-engine drive mode, single-engine drive mode, and driving water pumping mode, thereby driving the built-in oil pump to rotate.

[0043] When using this utility model: 1. In the dual-engine drive mode, the engine drives the transmission D1+T1 to rotate the input drive shaft 102, and the engine drives the transmission D2+T2 to rotate the input drive shaft 103. At this time, the driving cooling and lubrication circuit is in working condition. The rotation of the drive shaft in the coupling box drives the built-in oil pump 208 to work. The lubricating oil in the oil pan 101 of the coupling box is pumped through the oil outlet pipe 203 to the oil inlet of the radiator 201 through the internal oil pipe. Then, it passes through the oil outlet of the radiator 201 and the oil outlet pipe 204 in sequence, and then splits into two paths through the three-way connector 205. One path is sent to the oil hole 104 through the oil inlet pipe 206, and the other path is sent to the oil hole 105 through the oil inlet pipe 207. After the lubricating oil enters the coupling box through the oil hole 104 and the oil hole 205, it reaches the various friction pairs that need lubrication through the built-in oil passage 109 inside the coupling box 1. Temperature sensor 4 measures the temperature inside coupling box 1 and feeds it back to the controller. When the temperature T is below 60℃, the electric fan of radiator 201 does not turn on. The lubricating oil is drawn by the built-in oil pump and circulates in the cooling circulation pipe set inside the radiator. After circulation, it is sent to oil hole 104 through oil inlet pipe 206 and to oil hole 105 through oil inlet pipe 207 to maintain basic lubrication conditions. When the temperature T is between 60℃ and 85℃, the controller controls the electric fan of radiator 201 to work, cools the lubricating oil flowing through the radiator, and precisely controls the speed of the electric fan according to the temperature to achieve precise temperature control. When the temperature T is above 85℃, an alarm prompts the driver to stop the machine for inspection.

[0044] 2. In the single-engine drive mode of the fire truck, this embodiment takes the first drive power source as an example. The engine drives the transmission D1+T1 to drive the input drive shaft 102 to rotate. At this time, the driving cooling and lubrication circuit is in working state, and the built-in oil pump 208 is working. The lubricating oil in the oil pan 101 of the coupling box is pumped through the internal oil pipe to the oil inlet of the radiator 201 through the oil outlet pipe 203. Then, it passes through the oil outlet of the radiator 201 and the oil outlet pipe 204 in sequence, and then splits into two paths through the three-way connector 205. One path is sent to the oil hole 104 through the oil inlet pipe 206, and the other path is sent to the oil hole 105 through the oil inlet pipe 207. After the lubricating oil enters the coupling box through the oil hole 104 and the oil hole 205, it reaches the various friction pairs that need lubrication and cooling through the built-in oil passage 109 inside the coupling box 1. Temperature sensor 4 measures the temperature inside coupling box 1 and feeds it back to the controller. When the temperature T is below 60℃, the radiator 201 electronic fan does not turn on. When the temperature T is between 60℃ and 85℃, the controller controls the radiator 201 electronic fan to work and precisely controls the fan speed according to the temperature to achieve precise temperature control. When the temperature T is above 85℃, an alarm prompts the driver to stop the machine for inspection.

[0045] 3. When the fire truck is in the parking water-spraying mode, the power from the engine and transmission D2+T2 is transmitted to the water pump through the input drive shaft 103 for firefighting operations, while the drive power source 1 is in a stopped or idling state. At this time, the water-spraying cooling and lubrication circuit is in working state, the controller controls the motor 301 to work, the motor 301 drives the auxiliary oil pump 302 to work, and draws the lubricating oil from the coupling box oil pan 101 through the oil outlet pipe 303. After passing through the oil outlet pipe 404 and the four-way connector 305, it is divided into three paths. One path is sent to the oil hole 106 through the oil inlet pipe 306, another path is sent to the oil hole 107 through the oil inlet pipe 407, and the third path is sent to the oil hole 108 through the oil inlet pipe 508. The lubricating oil passes through the oil holes 306, 407, and 5108 to lubricate and cool the friction pair at the input drive shaft 103. Temperature sensor 4 measures the temperature inside coupling box 1 and feeds it back to the controller. When the temperature T is below 60℃, motor 301 drives auxiliary oil pump 302 to maintain basic lubrication conditions. When the temperature T is between 60℃ and 85℃, the controller controls the motor 301 to increase its speed and accelerate the circulation of lubricating oil. When the temperature T is above 85℃, an alarm prompts the driver to stop the machine for inspection.

[0046] 4. In the driving water-spraying mode, the engine powering the transmission D1+T1 is transmitted to the coupling box via the input drive shaft 102 to drive the vehicle, and the engine powering the transmission D2+T2 is transmitted to the water pump via the input drive shaft 103 for firefighting operations. At this time, both the driving cooling and lubrication circuit and the water-spraying cooling and lubrication circuit are in operation. The built-in oil pump 208 is working and pumps the lubricating oil in the oil pan 101 of the coupling box through the internal oil pipe to the oil inlet of the radiator 201 via the oil outlet pipe 203. Then, it passes through the oil outlet of the radiator 201 and the oil outlet pipe 204 in sequence, and then splits into two paths through the three-way connector 205. One path is sent to the oil hole 104 via the oil inlet pipe 206, and the other path is sent to the oil hole 205 via the oil inlet pipe 207. After the lubricating oil enters the coupling box through the oil hole 104 and the oil hole 205, it reaches the various friction pairs that need lubrication through the built-in oil passage 109 inside the coupling box 1. In this state, motor 301 also works simultaneously, driving auxiliary oil pump 302 to work. Through oil outlet pipe 303, lubricating oil is drawn from the oil pan 101 of the coupling box. After passing through oil outlet pipe 404 and four-way connector 305, it is divided into three paths. One path is sent to oil hole 306 through oil inlet pipe 306, another path is sent to oil hole 407 through oil inlet pipe 407, and the third path is sent to oil hole 5108 through oil inlet pipe 508. The lubricating oil passes through oil hole 3106, oil hole 4107, and oil hole 5108 to lubricate and cool the friction pair at the input drive shaft 2103. Temperature sensor 4 measures the temperature inside coupling box 1 and feeds it back to the controller. When the temperature T is below 60℃, the radiator 201 electric fan does not turn on, and the controller controls the speed of motor 301 to maintain basic lubrication. When the temperature T is between 60℃ and 85℃, the controller controls the radiator 201 electric fan to work and precisely controls the speed of the electric fan according to the temperature to achieve precise temperature control. At the same time, the controller controls the speed of motor 301 to increase the speed and accelerate the circulation of lubricating oil. When the temperature T is above 85℃, an alarm prompts the driver to stop the machine for inspection.

Claims

1. A cooling and lubrication system for a fire truck coupling box based on vehicle movement, comprising a coupling box, characterized in that: It is also equipped with a driving cooling and lubrication circuit, which includes a built-in oil pump and a radiator. The built-in oil pump is located in the coupling box. Driven by the transmission shaft in the coupling box, it draws the lubricating oil in the oil pan of the coupling box to the radiator for cooling and then sends it to the oil hole of the coupling box.

2. The cooling and lubrication system for a fire truck coupling box based on vehicle movement according to claim 1, characterized in that: The driving cooling and lubrication circuit also includes an oil outlet pipe and an oil inlet pipe. One end of the oil outlet pipe is connected to the oil outlet of the built-in oil pump, and the other end is connected to the oil inlet of the radiator. One end of the oil inlet pipe is connected to the oil outlet of the radiator, and the other end is connected to the oil hole of the coupling box.

3. The cooling and lubrication system for a fire truck coupling box based on vehicle movement according to claim 2, characterized in that: The coupling box has several oil holes, and the radiator oil outlet is connected to several oil inlet pipes via a multi-port connector. Each oil inlet pipe is connected to a corresponding oil hole.

4. A cooling and lubrication system for a fire truck coupling box based on vehicle movement, as described in claim 2 or 3, characterized in that: The radiator oil inlet is located at the bottom of the radiator, and the height of the radiator oil inlet is the same as the height of the oil pan of the coupling box.

5. A cooling and lubrication system for a fire truck coupling box based on vehicle movement, as described in claim 1, 2, or 3, characterized in that: It is also equipped with a water cooling and lubrication circuit, which includes an auxiliary oil pump and an oil pump drive mechanism. The auxiliary oil pump is driven by the oil pump drive mechanism to draw lubricating oil from the oil pan of the coupling box and send it to the oil hole at the input drive shaft of the coupling box.

6. A cooling and lubrication system for a fire truck coupling box based on vehicle movement, as described in claim 5, characterized in that: The water cooling and lubrication circuit also includes an oil outlet pipe and an oil inlet pipe. One end of the oil outlet pipe is connected to the oil pan of the coupling box, and the other end is connected to the oil inlet of the auxiliary oil pump. One end of the oil inlet pipe is connected to the oil outlet of the auxiliary oil pump, and the other end is connected to the oil hole at the input drive shaft of the coupling box.

7. A cooling and lubrication system for a fire truck coupling box based on vehicle movement, as described in claim 5, characterized in that: The coupling box is provided with an input drive shaft one and an input drive shaft two. The input drive shaft one is connected to a drive power source one, and the input drive shaft two is connected to a drive power source two.

8. A cooling and lubrication system for a fire truck coupling box based on vehicle movement, as described in claim 7, characterized in that: The lubricating oil in the driving cooling and lubrication circuit is cooled by the radiator and then sent to the oil hole at one input drive shaft and the oil hole at the other input drive shaft on the coupling box.

9. A cooling and lubrication system for a fire truck coupling box based on vehicle movement, as described in claim 7, characterized in that: The lubricating oil in the water-cooling and lubrication circuit is sent to the oil hole at the input drive shaft on the coupling box after being pumped by the auxiliary oil pump.

10. A cooling and lubrication system for a fire truck coupling box based on vehicle movement, as described in claim 1, 2, 3, 6, 7, 8, or 9, characterized in that: The coupling box is equipped with a temperature sensor, which is connected to the controller.

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