1547 results about "Transaxle" patented technology

An off-highway recreational includes a frame, a prime mover, a transmission, an intermediate shaft and a main shaft. The transmission is mechanically coupled to receive power from the prime mover and to provide mechanical power at a transaxle output shaft. The intermediate drive shaft is mechanically coupled to the transaxle output shaft, wherein the intermediate drive shaft has a first diameter. The main drive shaft is mechanically coupled to the intermediate drive shaft, wherein the main drive shaft has a second diameter that is greater than the first diameter.

The invention discloses a strict safety trajectory optimization control method and system for an under-actuated bridge crane. The method comprises the following steps: constructing a variable rope length kinetic equation model of the bridge crane; setting an end point constraint, a speed constraint and an acceleration constraint for a given initial trolley and rope length expected running track; respectively optimizing a trolley reference speed and a rope length reference speed based on the end point constraint, the speed constraint and the acceleration constraint; performing angle constraint by using a first control obstacle function, and setting an upper bound and a lower bound of a swing angle state variable; performing obstacle avoidance constraint by using a second control obstacle function; obtaining a cost function according to the first control barrier function and the second control barrier function; and solving the QP problem to obtain the corrected control input mu meeting the angle constraint and the obstacle avoidance constraint. According to the strict safe trajectory optimization control method and system for the under-actuated bridge crane, the moving trajectory is optimized, meanwhile, obstacles can be effectively avoided, and swing of the load is reduced.

The retractable tonneau cover for truck bed vehicles and similar, object of the present invention, comprises a mechanism box (100) provided with a winding stress shaft (10), and in the electric model, a drive axle (20) driven by an electric motor that enable the movement of opening and closing a retractable tonneau cover mat. The mechanism box is provided with an embodiment that improves the drainage system in order to prevent the accumulation of water inside it. In addition to the electrical model, the box (100) has a relief on its face that receives the control module with access from the outer portion, which improves accessibility and avoids the need to open the entire set, in case it needs maintenance, further having a management and activation system via Bluetooth and radio frequency.

The present disclosures relate to methods and systems for a hybrid powertrain. The hybrid powertrain system includes an integrated axle configured to provide mechanical power to a first pair of wheels, the integrated axle comprising a first motor-generator and a first drive axle such that the first motor-generator and at least a portion of the first drive axle are mechanically coupled to a common housing. The system also includes a second motor-generator configured to be mechanically coupled with an engine via a first clutch and mechanically coupled with a second drive axle via a second clutch, the second drive axle mechanically coupled with a second pair of wheels. A controller is electrically coupled with the first and second motor-generators, the engine, and the first and second clutches, the controller configured to enable a fully electric mode, a series hybrid mode, a parallel hybrid mode, and a regenerative mode of operation.

A fixed time anti-interference sliding mode tracking control method for an under-actuated bridge crane comprises the following steps: firstly, designing a disturbance observer which can converge in fixed time and is used for accurately estimating disturbance in a system so as to provide effective disturbance compensation information for a subsequent control strategy; secondly, in combination with the fixed time disturbance observer, a sliding mode controller is provided to ensure that the crane can accurately track a given trajectory and enable a tracking error to converge to a sliding mode surface within a fixed time. According to the invention, accurate positioning of the trolley can be realized, and load swing can be effectively inhibited in a complex environment. According to the method, the control precision and robustness of the under-actuated bridge crane in a disturbed environment can be remarkably improved, and an effective solution is provided for crane control under complex working conditions.

The invention discloses a bridge end fault processing method and device, equipment and a medium, and relates to the field of drive axles, and the method comprises the steps: obtaining fault levels corresponding to gearboxes and motors in all drive axles; judging whether a target fault level greater than or equal to a preset fault level exists in only one drive axle or not; if the two drive axles both have the target fault levels, the fault levels are uploaded to a whole vehicle fault processing module; if only one drive axle has the target fault level, judging whether a fault corresponding to the target fault level is a driving forbidding fault or not; if the fault corresponding to the target fault level is a driving forbidding fault, the fault level is uploaded to a whole vehicle fault processing module; and if the fault corresponding to the target fault level is not the driving forbidding fault, the fault level corresponding to the target fault is reduced by one level and then uploaded to a whole vehicle fault processing module, and the target drive axle with the target fault level is isolated. Therefore, the power of the vehicle can still be maintained when a single axle has a serious fault.

An electrically driven axle assembly is disclosed. In various embodiments, the electrically driven axle assembly includes a main housing; a differential plate configured for mounting within the main housing; a differential assembly, the differential assembly disposed adjacent the differential plate and having a bearing configured for mounting within a plate orifice that extends within the differential plate; a first drive shaft having a first inboard end connected to the differential assembly and a first outboard end configured to receive a first wheel; a first electric machine configured to drive the differential assembly; and a first gear assembly configured to operably couple the first electric machine to the differential assembly.

The utility model provides a steering system of a vehicle. The steering system comprises a steering control device, a steering driving device and a steering execution device. The steering driving device comprises a power output module, a power driving module, a first driving circuit and a second driving circuit, the power output module is connected to the steering execution device and used for driving the steering execution device, the first driving circuit is used for being connected with a first power source of the vehicle, and the second driving circuit is used for being connected with a second power source of the vehicle. The power driving module is used for controlling the first driving circuit or the second driving circuit to be connected to the power output module; the first driving circuit comprises two first driving bridge circuits which are connected in parallel and / or the second driving circuit comprises two second driving bridge circuits which are connected in parallel; the steering control device is connected to the power output module and used for controlling the power output module to operate. According to the steering system of the vehicle, the driving safety of the vehicle can be effectively improved.

This invention relates to the field of rear drive axle assembly technology, and more particularly to an assembly fixture for a wire retaining ring for a rear drive axle half-shaft. The fixture includes an assembly sleeve containing a cylindrical wire retaining ring placement groove and a cylindrical clearance groove, the latter communicating with the bottom surface of the placement groove. During assembly, the wire retaining ring is first placed in the placement groove. Then, the assembly fixture with the wire retaining ring is aligned with the half-shaft end face. Next, the second end of the assembly sleeve is pressed or struck, causing the wire retaining ring and the assembly sleeve to expand outwards by the half-shaft. Finally, after the wire retaining ring moves into the half-shaft groove, it retracts and returns to its original position. Using this assembly fixture, the wire retaining ring only needs to expand to the outer diameter of the half-shaft to complete the assembly, effectively reducing the possibility of the wire retaining ring failing to retract and return to its original position, thus improving the assembly quality stability of the wire retaining ring.

The utility model belongs to the technical field of drive axle assembly, and particularly relates to horizontal C-shaped press-fitting equipment and a press-fitting system for a forklift drive axle. The press-fitting device comprises two press-fitting mechanisms symmetrically arranged on the two sides of a line body rail and a connecting rod used for fixedly connecting the two press-fitting mechanisms. The press-fitting mechanism comprises a rack, an L-shaped press-fitting support installed on the rack in a sliding mode through a horizontal moving sliding table, a gas-liquid pressure cylinder with the fixed end fixedly installed on the L-shaped press-fitting support and a pressure head assembly installed on the L-shaped press-fitting support in a sliding mode through a first sliding assembly. At the initial position, the distances between the corresponding L-shaped press-fitting supports on the two sides of the line body rail and the corresponding drive axle press-fitting positions to be press-fitted in the X-axis direction are different. The two press-fitting mechanisms symmetrically arranged on the machine frame are adopted to form a horizontal C-shaped structure, press-fitting force only acts on the axes, where half-shaft oil seals and oil seal check rings are installed, of the two ends of the drive axle, other parts are not stressed, the service life of press-fitting equipment is guaranteed, and high operation efficiency is achieved.

The utility model provides a wet type fallen leaf sweeping vehicle which comprises a main vehicle frame, a differential drive axle is fixed on the bottom side of the main vehicle frame, a drive motor drives wheels to walk through the differential drive axle, a water tank is fixed above the main vehicle frame, a fan is fixed below the water tank, the front portion of the water tank is designed to be a seat, and a battery is fixed below the seat. The upper portion of the water tank is designed into a tool box and an electric appliance box space, the water pump is installed in the electric appliance box, an air outlet pipe is fixedly connected to the outer side of the exhaust end at the front end of the fan, and an atomizing nozzle is fixed in the air outlet pipe. According to the electric wheel type sweeping vehicle, the electric wheel type integral structure is adopted, the physical limitation of manual carrying is avoided, the battery capacity is expanded, the endurance is prolonged, meanwhile, water with a proper capacity can be loaded, the wet type sweeping operation is improved through the effect that fine water mist is generated and mixed with air mist, and raised dust is reduced; and a good tool for riding instead of walk is provided for long-distance operation of operators, so that the physical strength is saved, and the working efficiency is also improved.

The utility model provides a harvester chassis device which comprises a harvester frame, a steering drive axle, a speed-changing gear box, a bracket, an engine shell and a main drive axle, the bracket is arranged on the steering drive axle and fixedly connected with one side of the engine shell, the other side of the engine shell is connected with the speed-changing gear box, the speed-changing gear box is connected with the main drive axle, and the main drive axle is connected with the steering drive axle. The harvester frame comprises a working frame body and a supporting frame body which are detachably connected, one end of the supporting frame body is connected with the main drive axle, the other end of the supporting frame body is connected with the bracket, the bottom of the working frame body is connected with the top of the supporting frame body, and the working frame body and the supporting frame body are detachably connected through a plurality of locking buckles. According to the chassis device of the harvester, equipment can be conveniently disassembled and assembled through the split body of the frame structure, the harvester is provided with a plurality of power output shafts, the universality and universality of the equipment are improved, and the problems that in the prior art, a chassis device of the harvester and the harvester are high in specificity, narrow in application range, poor in part universality, high in maintenance cost and the like are solved.

The utility model discloses a driving axle transfer AGV (automatic guided vehicle) jacking and positioning device, which belongs to the field of engineering machinery, is simple and compact in structure, small in occupied space, high in adaptability and stable in operation, and can be matched with a U-shaped automatic guided vehicle to realize on-line direct material taking and transfer, improve the working efficiency and reduce the labor cost. The device mainly comprises a supporting frame, a bottom plate of the supporting frame is fixedly installed on a transfer AGV body, a jacking frame is arranged in the supporting frame in a sliding mode and connected with a lifting device, the upper portion of the jacking frame is connected with a two-way adjusting platform, a positioning frame is arranged on the two-way adjusting platform, and a positioning plate clamp is arranged on the positioning frame. The jacking and positioning device is mainly used for jacking and positioning when the drive axle is transferred.

A wet drive axle with built-in parking and service brakes. Two axle housings (2) are respectively mounted on two sides of a motor (1); one end of a motor shaft (11) is connected to a differential (3) rotatably mounted in the axle housing (2), and a parking brake assembly (4) is provided between the other end of the motor shaft (11) and the axle housing (2); the differential (3) separately transmits the power of the motor (1) to sun gear shafts (61) rotatably mounted in the axle housings (2); a service brake assembly (5) for implementing braking is provided between each sun gear shaft (61) and the corresponding axle housing (2); an inner ring gear (69) is fixed in each axle housing (2), a planet carrier (63) is rotatably connected in the axle housing (2), planet gears (62) are mounted on the planet carrier (63), the planet gears (62) are located in the inner ring gear (69) and are engaged with the inner ring gear (69), and one end of each sun gear shaft (61) is inserted among multiple planet gears (62) and is engaged with the multiple planet gears (62). The position arrangement of a brake structure in a drive axle improves the compactness of internal structure arrangement, making the drive axle smaller.

The utility model relates to a power supply vehicle which comprises an engineering chassis which comprises a vehicle frame, a front steering drive axle, a rear drive axle and an electric drive device, the front steering drive axle is connected to the front end of the bottom of the vehicle frame in a rotating mode, and the rotating face of the front steering drive axle is a vertical face; the rear drive axle is arranged at the rear end of the bottom of the frame, the electric drive device is arranged on the frame, and the electric drive device is in transmission connection with the front steering drive axle and the rear drive axle; wheels are arranged on the two sides of the front steering drive axle and the two sides of the rear drive axle. The power battery system is arranged on the frame, the power battery system comprises a storage battery and a charging interface, and the storage battery is electrically connected with the charging interface; and the control system is connected with the power battery system and the electric driving device. According to the utility model, energy compensation can be dynamically provided for the electric engineering mechanical equipment, so that the electric engineering mechanical equipment can operate far away from an electric power coverage area.

The invention discloses a posture adjustment driving mechanism and a hinged type all-terrain vehicle, the posture adjustment driving mechanism is connected with a frame, and longitudinal driving axles are arranged on the left side and the right side of the frame. The posture adjusting driving mechanism is provided with a side bridge adjusting mechanism. A lifting driving mechanism is arranged at the rear end of the side bridge adjusting mechanism and can drive the single-side longitudinal driving axle to swing up and down; a differential mechanism linkage system is arranged at the front end and comprises a differential mechanism connected with the frame, half shafts at the two ends of the differential mechanism are connected with the longitudinal drive axle through a multi-connecting-rod mechanism, the differential mechanism is provided with a decoupling mechanism, and connection between the half shaft on the single side and a differential mechanism shell can be removed. A power mechanism and a gearbox are fixed to the frame and provide walking power for the longitudinal drive axle. The longitudinal drive axle is composed of a middle axle frame, a hollow swing arm and the like, power transmission, steering control and independent height adjustment can be achieved, and the passing adaptability of complex terrains is effectively improved.

To effectively use heat generated in a transaxle for heating inside a cabin.SOLUTION: A vehicle is a four-wheel-drive vehicle based on front-wheel driving. A front-wheel transaxle includes a front-wheel motor, a reduction gear, and a differential gear, and transmits drive power of the front-wheel motor to front wheels. The front-wheel transaxle includes a disconnect mechanism. An air-conditioner uses heat (waste heat) that is generated in the front-wheel transaxle for heating inside a cabin. In a case where heating is requested (a positive determination at S10) and the disconnect mechanism is disconnected (a positive determination at S11) and if a first condition (a travel state with a heat dissipation to outside air from the front-wheel transaxle being equal to or higher than a given value) does not hold (a negative determination at S12), a control ECU requests connection of the disconnect mechanism. It is therefore possible to use the heat generated by co-rotation of the front-wheel transaxle for heating the inside of the cabin.SELECTED DRAWING: Figure 3

The invention relates to a vehicle driving structure, in particular to a hydraulic differential stepless speed change drive axle. Comprising a power input assembly, a hydraulic base and two driving half bridges which are symmetrically arranged on the hydraulic base and are the same in structure, and each driving half bridge comprises a hydraulic motor assembly, a transmission assembly and a power output assembly. The hydraulic base comprises a base body, a hydraulic channel in the hydraulic base is a circular channel which is formed by drilling and has a smooth and straight inner wall, a hydraulic input port and two hydraulic output ports, and the hydraulic input port and the hydraulic output ports are communicated through the interior of the base body; the power input assembly is connected with the hydraulic input port, the hydraulic motor assembly is connected with the hydraulic output port, and the hydraulic motor assembly is connected with the power output assembly through the transmission assembly. According to the hydraulic differential stepless speed change drive axle adopting the scheme, self-adaptive differential drive is achieved by controlling the hydraulic pressure of a single vehicle.

The invention belongs to the field of engineering machinery, and discloses a disconnected axle assembly and an all-terrain crane, the disconnected axle assembly is used for being installed on a frame rotation section and comprises a left axle and a right axle, the left axle and the right axle are distributed on the two sides of the frame rotation section, and the left axle and the right axle are connected with the frame rotation section through respective suspension oil cylinders; and the wheel side driving motors are mounted in the left axle and the right axle and are used for rotationally driving the wheels on the two sides. The invention provides a disconnected axle assembly of an independent suspension and a wheel side hydraulic auxiliary driving system of the disconnected axle assembly. A mechanical drive axle and a wheel side hydraulic drive axle can be driven at the same time through a single engine. Compared with the prior art, the height of the whole vehicle can be reduced, the height of the gravity center can be reduced, the running anti-roll capacity is improved, running is safer, wheel edge liquid driving force can be increased, the dynamic property of the whole vehicle is improved, the wheel edge liquid driving force can be selectively input according to the running working condition of the vehicle, and control is flexible and convenient.

A drive axle assembly and a vehicle comprising same. The drive axle assembly comprises a hub mechanism, a driving mechanism and a braking mechanism. The hub mechanism is connected to the driving mechanism. The braking mechanism is movably connected to the driving mechanism, and the braking mechanism is used for braking the driving mechanism to achieve braking of the hub mechanism.

The invention discloses a high-voltage lithium battery cross-country telescopic arm type forklift which comprises a chassis driving part, a front driving steering axle and a rear driving steering axle, wherein the chassis driving part comprises a reduction gearbox, a traction motor is directly mounted on the front driving steering axle, and the rear driving steering axle is connected with an output flange at the lower end of the reduction gearbox through a transmission shaft; the front drive steering axle and the rear drive steering axle are both steering drive axles, an electric push rod can drive a clutch to achieve four-wheel-drive and two-wheel-drive function switching, steering of the front drive steering axle and the rear drive steering axle can be independently controlled, three modes of independent front wheel steering, crab-shaped steering and four-wheel concentric steering are achieved, and a steering kingpin-mounted angle sensor monitors the steering angle of wheels. According to the invention, the chassis driving part adopts the front driving steering axle and the rear driving steering axle which are integrated with the reduction gearbox, the traction motor is directly connected with the front axle and the reduction gearbox, and power transmission is realized through the transmission shaft. Meanwhile, the electric push rod controls the clutch, the four-wheel drive mode and the two-wheel drive mode can be rapidly switched, and the power requirements under different working conditions are met.

The invention discloses a portable fan based on a three-phase micromotor, the portable fan comprises a power supply circuit, a controller, a drive axle circuit and the three-phase micromotor, the power supply circuit comprises a rechargeable battery, and the power supply circuit is connected with a power supply end of the controller and a power supply bus of the drive axle circuit; a driving pin of the controller is connected with a driven end of the drive axle circuit, three output ends of the drive axle circuit are connected with three electrodes of the three-phase micromotor, and the controller is used for outputting a driving signal to drive the drive axle circuit to generate three-phase alternating current of sine waves to drive the three-phase micromotor to start, stop or regulate the speed. The drive axle circuit is directly controlled by the controller, so that a drive chip of the drive axle circuit is omitted, and the cost is saved; on the other hand, compared with square wave driving, three-phase current driving based on smoother sine waves greatly reduces noise and power consumption of the three-phase micromotor, and the cruising ability is improved.

The outdoor garden operation vehicle comprises a vehicle frame, a left drive axle assembly, a right drive axle assembly, a mowing component, a power supply component and a braking module, and the braking module comprises a braking and parking assembly; a user steps on the braking and parking assembly to generate braking force to the left drive axle assembly and the right drive axle assembly, the braking and parking assembly comprises a pedal assembly, the pedal assembly comprises a main pedal and an auxiliary pedal, and the user steps on the main pedal to enable the braking module to enter a braking state and a parking state. A user treads the auxiliary pedal to enable the brake module to release the parking state. Braking can be achieved by treading the main pedal by a user, parking can be achieved by continuously treading the main pedal, and switching of the braking mode and the parking mode better conforms to the using habit of the user; when the parking mode is released, only the auxiliary pedal needs to be treaded, and the overall operation is more convenient.

According to the multi-connecting-rod type automobile suspension device, through cooperative cooperation of a multi-connecting-rod assembly, a damping support, an axle and a damping assembly, wheel vertical vibration caused by the road surface can be efficiently converted into a multi-connecting-rod swing vector, and self-adaptive damping adjustment is achieved by means of a damper and air cylinder composite structure in the damping assembly; impact can be effectively buffered in the compression stroke, springback can be restrained in the stretching stroke, it is ensured that tires continuously grip the ground, meanwhile, sound insulation materials are additionally arranged at the ends of the dampers, running noise is effectively reduced, impact energy in the vertical direction is further absorbed by integrating multiple sets of spiral springs through a drive axle, rigid transmission to an automobile main frame is reduced, and the service life of the automobile is prolonged. The whole structure is high in rigidity and reasonable in spatial arrangement, and has good vibration absorption performance, reliability and comfort, and the driving smoothness, the control stability and the noise vibration comfort of a vehicle are remarkably improved.

The utility model discloses a planet multiple steering mechanism which comprises a gearbox body provided with an output shaft, a planet carrier and a planet wheel, an inner gear ring and an outer gear ring are arranged on the outer wall of the gearbox body, and the inner gear ring and the outer gear ring drive the output shaft to rotate and output torque. A first wet clutch bag capable of locking the planet carrier and the output shaft and a second wet clutch bag capable of fixing the planet carrier are arranged in the gearbox body. The rear end of the gearbox body is provided with a lubricating oil port used for injecting oil into the first wet clutch pack and the second wet clutch pack, a first high-pressure oil hole used for injecting oil into the first piston corresponding to the first wet clutch pack and a second high-pressure oil hole used for injecting oil into the second piston corresponding to the second wet clutch pack. The driving method comprises a two-drive mode, a non-multiple four-drive mode and a multiple four-drive mode and can be used for a tractor gearbox and a tractor steering drive axle, front wheel multiple is provided when a tractor steers, and small-radius steering is achieved.

The invention belongs to the technical field of new energy automobile transmission, and particularly discloses a double-gear electric drive axle system and a gear shifting control method.The system mainly comprises a drive motor, a first-stage gear pair, a second-stage gear pair, a synchronizer and a planetary gear mechanism, and high-gear and low-gear switching is achieved through axial movement of the synchronizer. At a high gear, a gear ring of the planetary gear mechanism is jointed with the sun gear, and the transmission ratio is 1; in the low gear, the gear ring is locked, and speed reduction transmission is achieved. The gear shifting control method comprises a gear upshift process and a gear downshift process, and gear shifting without power interruption is achieved through the steps of torque clearing, gear disengagement, rotating speed adjustment, gear engagement, torque recovery and the like. The multi-gear biased electric drive axle has the technical advantages of simple and compact mechanical structure, easiness in control, uninterrupted power and the like, and meanwhile, the drive axle adopts the countershaft to perform coaxial biased arrangement, so that the problem of intensified mass center bias of the multi-gear biased electric drive axle is relieved, direct connection of a high-speed motor and a planetary gear mechanism is avoided, and the problems of uneven load and NVH of planetary gears are solved.

A distributed drive system (10), comprising a first drive system (100) and a second drive system (200). The first drive system (100) comprises a first drive motor (110) and a first transmission assembly (120). The first drive motor (110), by means of the first transmission assembly (120), drives a first wheel (11) of a vehicle to rotate. The second drive system (200) comprises a second drive motor (210) and a second transmission assembly (220). The second drive motor (210), by means of the second transmission assembly (220), drives a second wheel (12) of the vehicle to rotate. The first wheel (11) and the second wheel (12) are located on the same drive axle. The first transmission assembly (120) comprises a first oil churning member (121). The first oil churning member (121) can, by means of rotation, allow engine oil to be splashed on the first drive motor (110). The second transmission assembly (220) comprises a second oil churning member (221). The second oil stirring member (221) can, by means of rotation, allow engine oil to be splashed on the second drive motor (210). Further provided is a drive assembly applying the distributed drive system. The drive assembly has a more compact structure, and the occupied space is reduced.

The invention relates to the technical field of soil leveling and fertilizing equipment, and discloses an agricultural soil leveling and fertilizing machine and a use method thereof.The agricultural soil leveling and fertilizing machine comprises a main body, the top of the main body is fixedly connected with a drive axle, the outer surface of an output shaft of the drive axle is sleeved with two belts, and the interior of the main body is rotationally connected with a crushing shaft; the front face and the back face of the crushing shaft penetrate through the outer wall of the body and extend to the outside, and the extending end of the crushing shaft is in transmission connection with the output end of the drive axle through a belt. When the two swing plates swing, soil on the two sides of an opened groove can be driven to swing, so that the soil in the wide position is loosened under reciprocating swing of the two swing plates, and the position of applied fertilizer behind the female plough is covered in a flowing mode; the condition that the fertilizer is exposed on the surface of soil due to the fact that the soil is difficult to return to the ditch during traveling fertilization is reduced, so that the soil leveling uniformity can be improved while the soil is leveled, and the soil leveling efficiency is improved.

The utility model belongs to the technical field of front drive axles, and particularly relates to a light-weight tractor front drive axle which comprises a front axle body, a reinforcing plate is fixedly connected to the outer wall of the front axle body, a driving shaft penetrates through the outer wall of the front axle body, and a first bevel gear is fixedly connected to one end of the driving shaft. A rubber backing ring and a cover plate are arranged to drive a sealing ring on the outer wall of a connecting block to be attached to the inner wall of an oil injection opening, sealing operation on the oil injection opening is achieved, then a rotary knob rotates to drive a threaded column to slide along the connecting block through a bolt, and therefore the oil injection opening is sealed. The threaded column slides to drive the pressing ring at the top end of the pressing plate to move synchronously, then the pressing ring moves to press the rubber backing ring, the rubber backing ring deforms, the outer wall of the rubber backing ring is attached to the inner wall of the oil injection port, the sealing performance of the oil injection port is improved, and the situation that muddy water permeates into the front axle body through the oil injection port, and consequently workpieces in the front axle body are abraded is avoided.

The invention relates to an electric outdoor garden operation vehicle which comprises a vehicle frame, a left drive axle assembly, a right drive axle assembly, a mowing component, a power supply component and a brake module. The brake module comprises a brake parking assembly and a foot brake pump. The brake parking assembly comprises a pedal assembly, the pedal assembly extrudes a foot brake pump and generates braking force to the left drive axle assembly and the right drive axle assembly when being treaded by a user, and an oil brake force damping adjusting mechanism is arranged at the foot brake pump and used for enabling the pedal assembly to be continuously treaded when hydraulic oil in the foot brake pump is compressed to the limit. Therefore, a user does not feel the feedback that the brake is too hard in the treading process of the whole pedal assembly; the damping piece has initial damping force after being assembled, so that pedal bounce borne by a user in the treading process of the whole pedal assembly is gradually increased, the section where the bounce is obviously increased does not appear, and the overall braking feeling of the user is improved.