528 results about "Retarder" patented technology

The invention discloses an electric brake control system and method for an electrically-driven mining dump truck, and the system comprises a vehicle control unit VCU which is connected with an accelerator pedal, a brake pedal, a tilt angle sensor, a weighing sensor, an intelligent brake switch, a motor controller, a power battery and a retarder. The vehicle control unit VCU, the motor controller and the power battery sequentially form a closed loop, and the motor controller is further sequentially connected with the driving motor, the gearbox and the axle. Whether a vehicle is in a downhill state or not at present is analyzed through the vehicle control unit VCU, the slope angle and the vehicle weight are converted, the vehicle speed, the friction coefficient and the like are combined, appropriate electric braking torque of the vehicle is converted to keep the vehicle speed lower than a certain speed for downhill, and a driving motor is preferentially used for generating electricity and feeding back the electricity to a power battery to achieve braking. When the power generation braking force is insufficient, the retarder intervenes to supplement the braking torque, so that the electrically-driven mine truck automatically goes downhill at a stable speed, energy recovery is realized to the greatest extent, the cruising ability of the electrically-driven mine truck is improved, the electric quantity configuration of a power battery is reduced, and the effects of saving energy, reducing emission and reducing cost are achieved.

The invention discloses a commercial vehicle thermal management system and a control method thereof.The system comprises an electric control unit, an engine cooling loop, a hydraulic retarder cooling loop, a cooling loop on-off unit and a temperature detection unit, and the cooling loop on-off unit is used for connecting and disconnecting the hydraulic retarder cooling loop and the engine cooling loop and / or connecting and disconnecting the hydraulic retarder cooling loop and the engine cooling loop; the cooling loop on-off unit is used for bypassing a hydraulic retarder cooling loop; the temperature detection unit is used for detecting the environment temperature, the cooling liquid temperature and / or the cylinder cover temperature. The electric control unit controls the heat management valve, the electronic water pump, the electronic fan and the air inlet grid switch according to temperature signals. And the electric control unit controls the cooling loop on-off unit according to the working state of the hydraulic retarder so as to connect and disconnect the hydraulic retarder cooling loop and the engine cooling loop. Therefore, the engine and the hydraulic retarder share one set of cooling loop, and the cooling loop is switched on and off according to the working state of the hydraulic retarder, so that the vehicle has good heat dissipation performance.

The invention relates to a fault detection method and system suitable for a vehicle body provided with a retarder, and relates to the technical field of vehicle body fault detection. The method comprises the following steps: acquiring and detecting a vehicle body state signal of a vehicle body; vehicle body dynamic signals of a vehicle body are obtained and detected; and accessing a buffer and enabling the retarder to enter a test mode to test the function of the retarder. The fault detection system is composed of a controller, a speed signal detection unit, a signal amplifier and a power supply unit which are connected with one another to work cooperatively. According to the method, the effects of comprehensively detecting the fault of the vehicle body provided with the retarder, effectively positioning the fault position and evaluating the fault condition are achieved.

The invention discloses a heavy truck hydraulic retarder control method and system and a vehicle, and belongs to the technical field of retarder control. The method comprises the steps that the target braking torque value of a retarder is read; if the target braking torque value is larger than or equal to the maximum output torque value, the target braking torque value is set to be the maximum output torque value; if yes, the target braking torque value is dynamically compensated; calculating a target working pressure value of the retarder cavity; and the deviation between the target working pressure value of the retarder containing cavity and the current working pressure and the deviation between the proportional valve target and the actual current are calculated, calculation is conducted through a PID controller, and the output serves as the input of the retarder proportional valve so as to control the output torque of the retarder. According to the invention, the output torque delay can be reduced so as to improve the braking performance of the retarder, the braking precision and stability are relatively high, and relatively stable braking can be maintained under the conditions of different vehicle speeds and different oil temperatures.

The invention relates to a retarder braking control method and device, computer equipment and a storage medium. The method comprises the steps that current vehicle parameters and current braking gear signals of a vehicle are obtained; based on the current braking gear signal, strategy selection is conducted on a preset retarding braking strategy, and a target retarding braking strategy is obtained; the braking parameters are calculated according to the target retarding braking strategy and the current vehicle parameters, and target braking parameters are obtained; and brake adjustment is conducted on the retarder and the engine based on the target brake parameters. By the adoption of the method, the braking force parameters of all gears of the retarder can be adjusted in time according to the actual driving condition so that the braking effect can be optimized, the braking performance of the vehicle can be improved, and more accurate and efficient braking control can be achieved by continuously optimizing the braking parameters of the retarder.

The invention provides a hydraulic retarder system and method and a vehicle with the hydraulic retarder system. The hydrodynamic retarder system comprises a hydrodynamic retarder, a hydraulic control system and a control system, wherein the hydrodynamic retarder is provided with a retarder working cavity; a third oil inlet of the oil guide device is communicated with a second oil outlet of the retarder working cavity, and a third oil outlet of the oil guide device is communicated with a second oil inlet of the retarder working cavity; a fourth oil inlet of the heat energy conversion device is communicated with a fifth oil outlet of the oil liquid guide device, a fourth oil outlet of the heat energy conversion device is communicated with a fifth oil inlet of the oil liquid guide device, and the heat energy conversion device is electrically connected with external equipment. And the heat energy conversion device is used for converting heat energy generated by the hot oil into electric energy for external equipment to use. The energy utilization efficiency of the system is improved, remarkable economic and environmental benefits are brought, and the problem that in the prior art, the braking torque gear of the hydraulic retarder is difficult to meet the requirements under different working conditions is solved.

The invention relates to a braking device (10) for a motor vehicle with a fluid path (12) through which a fluid can flow and which has at least two line sections (14, 16), in which at least one pump element (18) and at least one valve device (34) which has a valve inlet (26) and a valve outlet (28) and which can be moved between at least two valve positions (30, 32) is arranged, wherein the valve device is fluidically connected to the pump element (18) via the valve inlet (26) by means of a first of the line sections (14), with a retarder (38), which has a stator (40), a rotor (42) and a retarder inlet (44), via which the retarder (38) is fluidically connected to the valve device (34) by means of the second of the line sections (16) via the valve outlet (28), wherein in a first of the valve positions (30) the valve inlet (26) is fluidically connected to the valve outlet (28) and in the second valve position (32) the valve inlet (26) is not fluidically connected to the valve outlet (28).

The utility model provides a torque adjusting structure of a hydraulic retarder, and belongs to the technical field of hydraulic retarders. The oil cooler comprises a middle cover, a rear cover and an oil cooler body, the rear cover is connected with the middle cover and the oil cooler body through fastening screws, oil through holes are correspondingly formed in the rear cover and the oil cooler body, throttling ring installation grooves are formed in the side wall, close to the oil through holes, of the rear cover, and throttling rings are arranged in the throttling ring installation grooves. The throttling ring mounting groove is located at the end of the oil through hole and communicates with the oil through hole, and a throttling ring is arranged in the throttling ring mounting groove; by means of the design that a traditional throttling piece is changed into the throttling ring, use of a locking screw is avoided, the throttling ring can be directly arranged in a specially-designed installation groove in a buckled mode, the assembling and maintaining process of the device is simplified, and the throttling ring can be replaced more rapidly and conveniently; and when the throttling ring needs to be replaced, only the oil cooler needs to be disassembled, the process of disassembling and assembling the throttling piece is omitted, and the damage probability of the device is reduced while more convenience is achieved.

The invention relates to a vehicle braking control method and device under the long downhill condition, and belongs to the technical field of vehicle control The vehicle braking control method under the long downhill condition comprises the steps that under the condition that a vehicle is located on a long downhill road section, the braking strength currently needed by the vehicle is determined based on the current vehicle speed, the current road gradient and the whole vehicle mass; the braking mode of the vehicle is determined based on the braking strength currently needed by the vehicle, and the braking mode is determined by braking power generated by the number of braking air cylinders; and the braking mode is adjusted based on the vehicle speed keeping condition and the air inlet temperature change condition of the vehicle. According to the invention, the vehicle speed stability control of the long downhill can be realized under the condition that a retarder is not arranged, and the cost of the whole vehicle is reduced while a certain braking power is ensured.

The invention provides a method for testing the cooling performance of a vehicle retarder, and the method comprises the steps: placing a vehicle on a chassis dynamometer in an environment cabin, and adjusting the temperature parameter and humidity parameter of the environment cabin to simulate an outdoor environment; setting a gear of a retarder of the vehicle as a constant speed gear, adjusting a gradient parameter of a chassis dynamometer to a first preset gradient so as to simulate a driving gradient of the vehicle, and controlling the vehicle to run at a first preset vehicle speed; in the process that the vehicle runs at the first preset vehicle speed, the vehicle speed, the vehicle running time, the vehicle running mileage and the inlet and outlet temperature difference of retarder cooling liquid are recorded; an analysis result is generated according to the speed of the vehicle, the driving time of the vehicle, the driving mileage of the vehicle and the inlet and outlet temperature difference of the retarder, and the analysis result is used for representing whether the cooling performance of the retarder meets the design index or not. The environment working condition and the road working condition are adjusted according to test requirements, test variables are accurately controlled, and the test result is prevented from being influenced by the external environment and the road working condition.

The invention discloses a thermal management valve with a double-ball-valve structure, which comprises a valve body, a double-ball-valve assembly and an electric control driver, the valve body is provided with a bypass water path, a first large circulation water path, a second large circulation water path, a small circulation water path and a liquid buffer water path, the double-ball-valve assembly comprises a first valve ball and a second valve ball, and when the valve is in a closing position, the first valve ball and the second valve ball are closed. The first and second large circulating waterways are simultaneously closed, the small circulating waterway is fully opened, and the bypass waterway is fully opened; when the valve is located at a 90-degree opening position, the first large circulating water path and the second large circulating water path are fully opened, the small circulating water path is closed under the condition that bypass quantity is reserved, and the bypass water path is fully opened; when the valve is in a 180-degree opening position, the first large circulation water path and the second large circulation water path are fully opened, and the small circulation water path and the bypass water path are closed under the condition that the bypass amount is reserved. According to the valve, the flow control valve of the hydraulic retarder and the thermostat valve of the engine cooling system are integrally arranged, so that the arrangement space of an engine is saved, and the reliability of the engine is improved.

The invention relates to the field of vehicle control, in particular to a vehicle downhill constant-speed control method and system based on a hydraulic retarder and a storage medium. According to the ramp information and the state information of the vehicle, fitting wind resistance and road resistance coefficients of the vehicle based on a least square method; according to the wind resistance and road resistance coefficient and ramp information of the vehicle, first target brake pressure of a hydraulic retarder controller and second target brake pressure of a hydraulic retarder are calculated; calculating a proportional valve control input value, wherein the hydraulic retarder controls the vehicle speed based on the proportional valve control input value; the first target brake pressure and the second target brake pressure of the hydrodynamic retarder are calculated by fitting the wind resistance coefficient of the vehicle and the road resistance coefficient, the pressure of the working cavity is adjusted through the input value of the pressure closed-loop control proportional valve, and the precision and stability of vehicle downhill constant-speed control are remarkably improved; and it is ensured that the vehicle can still rapidly and stably maintain the target vehicle speed when the gradient changes, and the driving safety and comfort are greatly optimized.

The invention relates to a braking device (10) with a fluid path (12) through which a fluid can flow and which has two line sections (14, 16), in which a pump element (18), a cooler (64) and a valve device (34) which has a valve inlet (26) and a valve outlet (28) and which can be moved between two valve positions (30, 32) is arranged, wherein the valve device is fluidically connected to the pump element (18) via the valve inlet (26) by means of a first of the line sections (14), with a hydraulic sump (80) fluidically connected to the fluid path (12), with a retarder (38), which has a stator (40), a rotor (42) and a retarder inlet (44), wherein the valve inlet (26) is fluidically connected to the valve outlet (28) in a first of the valve positions (30), whereby the fluid flowing through the first line section (14) can be conveyed through the valve device (34) to the retarder inlet (44) via the second line section (16), and the valve inlet (26) is not fluidically connected to the valve outlet (28) in the second valve position (32).

An emergency brake system for a heavy-duty vehicle, comprising: a pressure sensor arrangement configured to issue a first signal, S1, upon determination that the pressure in a regular brake circuit is zero or below a predefined pressure threshold value, a speed sensor configured to issue a second signal, S2, upon determination that the speed of the heavy-duty vehicle exceeds a predefined speed threshold, a parking-brake sensor configured to issue a third signal, S3, upon determination that the parking brake is in an applied state, a retarder brake configured to decelerate the heavy-duty vehicle upon activation of the retarder brake, a processing circuitry configured to activate the retarder brake upon receiving all of said three signals S1, S2 and S3.

Embodiments herein disclose an electric railroad retarder having a plurality of retarder modules. A retarder module comprises a gear cam assembly disposed between a first brake unit and a second brake unit. The gear cam assembly comprises a first position arm plate and a second position arm plate that are connected to a cam using a first positioning arm and a second positioning arm. The cam rotates to perform one of: compress a first brake spring, a second brake spring, a third brake spring and a fourth brake spring to hold wheels of a railcar; decompress the first brake spring, the second brake spring, the third brake spring and the fourth brake spring to release the wheels of the railcar; and separate the first position arm plate from a first spring base plate, and the second position arm plate from a second spring base plate to allow insertion of a shim.

The utility model discloses an integrated bidirectional hydraulic pump station for a car arrester in a tank, which comprises a valve block, a bidirectional hydraulic pump, a motor, an oil tank, a car arrester driving oil cylinder, overflow valves and one-way valves, a left oil way and a right oil way are arranged in the valve block, the left oil way is provided with a first overflow valve, a first one-way valve and a fifth one-way valve, and the fifth one-way valve is a hydraulic control one-way valve. A second overflow valve and a second one-way valve are installed on the right oil way, and the second one-way valve is a hydraulic control one-way valve and is controlled by the oil pressure of the left oil way; an oil port A1 of the two-way hydraulic pump is connected with a piston cavity oil port of the car arrester driving oil cylinder through a left oil way, and an oil port B1 of the two-way hydraulic pump is connected with a piston rod cavity oil port of the car arrester driving oil cylinder through a right oil way. The left oil way is connected with the oil tank through a fifth one-way valve, and the fifth one-way valve is used for releasing additional backpressure generated in a piston cavity in the process that the two-way hydraulic pump drives a piston rod of the car arrester driving oil cylinder to retract. According to the utility model, the power consumption is reduced, the energy is saved, and the reliability of the system is improved.

The invention belongs to the technical field of new energy automobile transmission gear shifting control, and discloses an AMT gear shifting control method in an electric truck combined braking constant-speed downhill process, which comprises the following steps: judging whether a vehicle enters a combined constant-speed control state or not, and if the vehicle enters the combined constant-speed control state, selecting an AMT gear shifting rule based on a preset AMT gear shifting rule; the AMT optimal gear is obtained according to the current vehicle speed and the required regenerative braking torque, the limitation that only the motor efficiency is considered in a traditional method is broken through, the transmission system and the battery charging and discharging efficiency are synchronously covered, meanwhile, a braking torque cooperative change mechanism is creatively adopted, and the optimal gear is obtained. In the gear shifting process, braking force distribution of the motor and the hydraulic retarder is coordinated according to the preset AMT gear shifting rule, vehicle speed fluctuation caused by power interruption is eliminated, the energy loss and speed control instability risks caused by frequent gear shifting are overcome, driving comfort is guaranteed through gear shifting hysteresis control and the minimum vehicle speed threshold value, and safe and energy-saving closed-loop control is formed.

The utility model provides a vehicle speed reducer and an automobile, the vehicle speed reducer comprises a speed reducer shell and a speed reducer body, one side of the speed reducer shell is sunken to form a labyrinth structure, the labyrinth structure is provided with an oil gas cavity, a ventilation channel and an overflow channel, and the ventilation channel and the overflow channel both communicate with the oil gas cavity; the vehicle speed reducer further comprises a labyrinth cover piece and a ventilation valve assembly, the labyrinth cover piece is arranged on the labyrinth structure in a covering mode, the labyrinth cover piece is provided with an air inlet channel, and the ventilation valve assembly is installed on the ventilation channel. A mixture of oil and gas in the speed reducer shell flows into the oil gas cavity through the gas inlet channel, the oil flows back into the containing cavity from the overflow channel, and the gas is discharged from the ventilation valve assembly. According to the vehicle speed reducer, the ventilation valve assembly and the labyrinth structure are integrated on the speed reducer shell, and the air tightness, the dustproof and waterproof performance and the compactness of the whole structure of the speed reducer are improved.

The invention belongs to the technical field of transmission cooling and lubricating, and relates to a transmission rear end forced lubricating and cooling system of a parallel hydrodynamic retarder and a transmission. Comprising a retarder support, a rear cover, an oil pump, a power takeoff side cover, a rear bearing cover, an oil pump diverter valve, a cooling lubricating oil way, an oil filtering plug screw and a net type oil filter. The oil pump diverter valve is used for being connected with an external heat exchanger, oil in an oil way is cooled, the temperature of lubricating oil is effectively reduced, and thermal safety of parts in the box body is guaranteed. Under the condition that other structures of the gearbox are not added, all-directional lubrication inside a rear-end transmission system is achieved, and the structural compactness and the space utilization rate are improved. Lubricating points of the lubricating system are comprehensively covered, oil duct connection of different shells is achieved through butt joint of the cross-joint-surface oil ducts, the lubricating system is compact in design, and the comprehensive performance, safety and reliability of a transmission system are improved in the aspects of heat dissipation, cooling, fatigue and efficiency of the system.

The utility model discloses a fixed four-linkage electric speed reduction elevator which comprises a motor, the output end of the motor is provided with a hole-shaft double-input lead screw speed reduction elevator, the two output ends of the hole-shaft double-input lead screw speed reduction elevator are respectively provided with a double-shaft input lead screw speed reduction elevator, and the two output ends of the hole-shaft double-input lead screw speed reduction elevator are respectively provided with a double-shaft input lead screw speed reduction elevator. The output end of one double-shaft input lead screw speed reduction elevator is provided with the other double-shaft input lead screw speed reduction elevator. According to the fixed type four-linkage electric speed reduction elevator, a middle reverser of a traditional four-linkage elevator is combined with a speed reduction elevator part, so that the middle reverser is omitted, and the reversing function is achieved through the process that the double-input worm is connected with the first arc bevel gear and the second arc bevel gear; by means of the speed reduction transmission characteristic of the worm gear and the worm, more speed reduction ratios can be obtained, the speed reduction ratio of the speed reduction elevator can be selected according to using requirements, and larger platform bearing force and various lifting speeds are achieved.

The invention discloses a combined braking method for a vehicle EBS system and a hydraulic retarder, which ensures that a brake shoe is not overheated due to long-time high-strength braking, and the braking stability is improved. The controller uses different degrees of cooperative braking according to the current working condition, the retarder plays an important role in the whole braking, the load of the friction braking system is greatly reduced, and therefore the stability of the braking system is improved. Braking operation is simple, and the driving intensity of a driver is relieved. Only a brake pedal is used for braking operation, additional operation is not needed, a handle is not needed, and manual braking system switching is not needed. The braking intention completely depends on the opening degree and the treading speed of the brake pedal treaded by the driver, and the driving habit is better met.

The invention relates to an intelligent thermal management control system and method, and a fan, a starting system, an instrument system, a retarder system, an air conditioning system and an engine control system (ECM) are in communication with the intelligent thermal management control system or are in hard wire connection with the intelligent thermal management control system. The intelligent heat management control system automatically selects different fan control schemes according to different input signal states of a starting system, an instrument system, a retarder system, an air conditioning system and an engine control system (ECM) and cooling requirements of the retarder system, the air conditioning system and the engine control system (ECM) in combination with the type of the cooling system, the environment temperature and the vehicle speed. Controlling the fan to execute different rotating speeds; the limp function is achieved, the optimal cooling requirement of the vehicle under different working conditions and different vehicle speeds can be met, the accessory power consumption is reduced, meanwhile, the fuel consumption rate is reduced, and the intelligent heat management control requirement is met.

A method for controlling the switching on and off of a hydrodynamic retarder in a motor vehicle powertrain is proposed, wherein the hydrodynamic retarder comprises a rotor arranged on a retarder shaft and a coupling device with an actuating device by means of which a coupling element can be switched from an open position to a closed position, wherein a control is provided by means of which the position of the coupling element can be controlled. According to the invention, it is proposed that, when the motor vehicle is stationary, the control system generates in a first step an intermediate signal, 0 or 1, based on switch-on criteria and a switching signal, 0 or 1, based on switch-off criteria, wherein in a second step a decision signal, 0 or 1, is generated based on the intermediate signal and the switching signal, by means of which the actuator is controlled and thus switched either to the open position or the closed position.

The invention relates to a pyrolysis carbon black reinforced tire transition layer rubber material and a preparation method thereof. The pyrolysis carbon black reinforced tire transition layer rubber material comprises the following components in parts by weight: 93.5-97.5 parts of first section rubber; 2-6 parts of sulfur; 0.3 to 0.8 part of an accelerant; and 0.1 to 0.5 part of scorch retarder. The head section rubber comprises the following components in parts by weight: 40-60 parts of natural rubber; 30 to 50 parts of carbon black; 5-15 parts of thermal cracking carbon black; 3-10 parts of zinc oxide; 2-6 parts of an anti-aging agent; and 0.2 to 1 part of cobalt boroacylate. Compared with the prior art, zinc oxide and white carbon black contained in the thermal cracking carbon black are utilized, and on the premise that the tensile property of the tire transition layer rubber material is not reduced, the cord thread drawing force is improved, and the heat generation performance of the tire transition layer rubber material is improved. Heat generation is reduced, the rolling resistance of the tire can be reduced, oil consumption is reduced, the excellent cord thread drawing force is achieved, and the safety performance of tire running is improved. Tyres use a large amount of rubber materials and need a large amount of reinforcing agents. When the thermal cracking carbon black is used in the tire, popularization and application of the thermal cracking carbon black can be further promoted, cyclic utilization of the tire is promoted, the environment is improved, and carbon neutralization is achieved.

The control system comprises a control unit, an oil tank, an oil pump, a heat exchanger, a two-position three-way slide valve, a two-position three-way proportional pressure control slide valve, a switch electromagnetic valve, a proportional electromagnetic valve, a proportional valve and an air source, the air source is respectively connected with the switch electromagnetic valve and the proportional electromagnetic valve, an air outlet of the switch electromagnetic valve is respectively connected with the two-position three-way slide valve and the two-position three-way proportional pressure control slide valve, and an air outlet of the proportional electromagnetic valve is connected with the proportional valve. During working, under the control of the two-position three-way slide valve and the two-position three-way proportional pressure control slide valve, engine oil can quickly enter the brake cavity to quickly generate brake torque, and the proportional electromagnetic valve can control the opening degree of the proportional valve to adjust the flow of the brake engine oil in the brake cavity so as to adjust the brake force. Therefore, the speed changing box has the advantages that the effect taking time of the brake oil cavity is prolonged, engine oil emulsification is prevented, the liquid filling rate is accurately controlled, oil pumping and oil leakage of the speed changing box are prevented, and air loss is reduced.

The utility model discloses a reaction kettle material adding and quantitative feeding device which comprises a reaction kettle main body and a feeding pipe installed on the top of the reaction kettle main body, a feeding bin is arranged on the top of the reaction kettle main body, a circular groove is formed in the feeding bin, a retarding motor is fixedly installed on the right side of the feeding bin, and the retarding motor is fixedly installed on the right side of the circular groove. An output shaft of the retarding motor penetrates through and extends into the circular groove, a rotating shaft is fixedly connected to the output shaft of the retarding motor, and the other end of the rotating shaft penetrates through and extends out of the feeding bin. According to the utility model, the slow-speed motor and the partition plate are matched to realize slow and equal-quantity conveying of materials and ensure that the feeding is accurate and controllable, and meanwhile, the single-time feeding quantity can be flexibly changed by adjusting the position of the movable seat, so that different process requirements are met; and through rotary sliding sealing treatment of a limiting plate and a circular groove and tight attachment of a through groove and a partition plate, it is guaranteed that no leakage exists in the conveying process, attached materials are convenient to clean through the left-right moving design of a movable base, and the equipment maintenance efficiency is improved.

The utility model relates to the technical field of vehicles, and particularly discloses a separation structure of a hydraulic retarder, the hydraulic retarder and a vehicle, a center shaft is provided with a matching groove, the extension direction of the matching groove is parallel to the axial direction of the center shaft, and a rotor assembly is provided with a matching block. The matching block is attached to the groove wall of the matching groove and can slide along the groove wall of the matching groove, and when the center shaft drives the rotor assembly to rotate, the groove wall of the matching groove pushes the matching block to slide in the direction close to the stator assembly. And the matching groove and the matching block are arranged, the extending direction of the matching groove is parallel to the axial direction of the center shaft, the structure is simpler, the requirements for machining equipment and personnel skills are low, and the machining cost is reduced.

The eddy current retarder support assembly comprises a left support and a right support which are installed on the left side face and the right side face of an eddy current retarder, a baffle is arranged under the eddy current retarder, and the two ends of the baffle are connected with the left support and the right support. The width of the baffle is the same as the thickness of the eddy current retarder, the shape of the baffle is matched with the outer contour of the eddy current retarder, and the baffle wraps the eddy current retarder, so that impact of gravel splashed at the bottom of a mine car on the eddy current retarder can be effectively prevented, damage of the gravel to the internal structure of the eddy current retarder is avoided, and the service life of the eddy current retarder is prolonged. In addition, adhesion and accumulation of the slurry on the surface and in the eddy current retarder can be effectively reduced, and the heat dissipation performance and the safety performance of the eddy current retarder are ensured.

The energy-saving speed reducer device comprises a speed reducer, a heat dissipation set is arranged on one side of the speed reducer, a pressure pump is arranged on the upper portion of one side of the heat dissipation set, the input end of the pressure pump is connected with the heat dissipation set, and the output end of the pressure pump is connected with an oil inlet of the speed reducer through a connecting pipe. An oil outlet in one side of the speed reducer is connected with the radiating group through an oil discharge pipe; according to the speed reducer, through arrangement of the pressure pump, lubricating oil in the speed reducer shell can be pumped out for cooling, so that the lubricating quality is improved, through arrangement of the heat dissipation set, the lubricating oil can be cooled, the service life of gears in the speed reducer is prolonged, and the energy loss is reduced; the outer side heat dissipation set can be fixed to the speed reducer and can be adjusted according to the size of the speed reducer, the height of the installation set can be adjusted through the arrangement of the adjusting set, and therefore the heat dissipation device is suitable for speed reducers of different sizes.

The present invention provides a hydraulic retarder fault judgment method, device and vehicle, belonging to the technical field of hydraulic retarders, the method comprising: when the hydraulic retarder stops working, judging whether the engine speed is less than the preset engine speed; when the engine speed is less than the preset engine speed, judging whether the difference between the hydraulic retarder oil temperature and the engine water temperature is greater than a first temperature difference value, and if so, determining that the hydraulic retarder has an exhaust fault; when the engine speed is greater than or equal to the preset engine speed, judging whether the difference between the hydraulic retarder oil temperature and the engine water temperature is greater than a second temperature difference value, and if so, determining that the hydraulic retarder has an exhaust fault; the first temperature difference value is greater than the second temperature difference value. The present invention can judge whether the hydraulic retarder has an exhaust fault by judging the difference between the hydraulic retarder oil temperature and the engine water temperature, thereby improving the safety of the hydraulic retarder.