36results about How to "Increase ground clearance" patented technology

The utility model discloses a floating suspension type mower which comprises a frame body, a supporting arm which is arranged on the frame body and can rotate around the advancing direction of the frame body, a cutter rest is arranged on the supporting arm, a fixed cutter and a movable cutter are arranged on the cutter rest, and the floating suspension type mower further comprises a driving air cylinder or a driving hydraulic cylinder and a vertical floating mechanism. The driving air cylinder or the driving hydraulic cylinder is connected with the supporting arm and can drive the supporting arm to rotate around the frame body. The vertical floating mechanism comprises a first elastic component, a first rotary supporting seat and a first floating rod, the first elastic component is basically vertically arranged, the first floating rod is movably connected with the supporting arm, the first elastic component stores energy and abuts against the first rotary supporting seat, and the first floating rod penetrates through the first elastic component and the first rotary supporting seat and rotates along with the supporting arm. According to the floating suspension type mower, the cutter rest and the supporting arm are arranged in a floating suspension mode, the cutter rest can be folded, the turning radius is small, walking is flexible and convenient, the structure is simple, the requirement for tractor power is low, installation is convenient, vibration of the cutter rest is small, and the ground clearance is large.

The utility model discloses a crank arm type corbel mechanism of a flat plate type wrecker, which comprises a corbel hinged with the bottom side of a cross beam of the wrecker in an up-and-down swinging manner and an oil cylinder hinged between the tail end of the cross beam and the corbel, and the section of the corbel hinged with the cross beam is bent upwards. Due to the fact that the corbel of the corbel mechanism of the flat plate type wrecker adopts the crank arm, and the section, hinged to the girder, of the corbel is bent upwards, the ground clearance of the hinged portion of the corbel is increased, and it is guaranteed that the wrecker has high trafficability. And meanwhile, the corbel mechanism of the wrecker can obtain a smaller negative angle and a larger positive angle.

The invention relates to a scraping strip assembly and a scrubber, the scraping strip assembly comprises a scraping strip body and a driving mechanism, and the scraping strip body comprises a hard part and a scraping strip part. The scraping strip body comprises a hard part and a scraping strip part, the hard part is configured to rotate around a first direction, in the rotating process of the hard part, the first end of the hard part ascends and descends in the height direction of the scrubber, and the scraping strip part is connected with the first end. And the driving mechanism is in transmission fit with the hard part and is configured to drive the hard part to rotate. According to the scraping strip assembly, the hard part is driven to rotate through the driving mechanism, then the scraping strip part is driven to ascend and descend, and switching between ground clearance and ground attachment is achieved. In other words, the lifting action of the scraping strip part can be converted into the rotating action, and part of the lifting distance of the scraping strip part is decomposed into displacement in the horizontal direction by the rotating action. Therefore, within the limited height size range of the scrubber, the lifting height which the scraping strip assembly can reach is higher, and the probability that particles are pushed away and cannot be twisted in and sucked away by the rolling brush is reduced.

The invention relates to a scraping strip assembly and a scrubber, the scraping strip assembly comprises a scraping strip body and a driving mechanism, and the scraping strip body comprises a hard part and a scraping strip part. The scraping strip body comprises a hard part and a scraping strip part, the hard part is configured to rotate around a first direction, in the rotating process of the hard part, the first end of the hard part ascends and descends in the height direction of the scrubber, and the scraping strip part is connected with the first end. And the driving mechanism is in transmission fit with the hard part and is configured to drive the hard part to rotate. According to the scraping strip assembly, the hard part is driven to rotate through the driving mechanism, then the scraping strip part is driven to ascend and descend, and switching between ground clearance and ground attachment is achieved. In other words, the lifting action of the scraping strip part can be converted into the rotating action, and part of the lifting distance of the scraping strip part is decomposed into displacement in the horizontal direction by the rotating action. Therefore, within the limited height size range of the scrubber, the lifting height which the scraping strip assembly can reach is higher, and the probability that particles are pushed away and cannot be twisted in and sucked away by the rolling brush is reduced.

The utility model discloses a speed reduction transmission mechanism, a speed reduction gear box and an electric skateboard, and particularly discloses a speed reduction transmission mechanism which comprises a driving gear and a driven gear, the driving gear is connected with the driving end of a driving motor and used for driving the driven gear to rotate, and the driven gear rotates to drive the electric skateboard to move. The transmission device further comprises a secondary reduction gear which is respectively connected with the driving gear and the driven gear in a meshed mode, and it can be understood that the secondary reduction gear is additionally arranged between the driving gear and the driven gear to reduce the number of gear teeth of the driven gear, so that the outer diameter of the driven gear is reduced, and the service life of the transmission device is prolonged. The overall dimension of the reduction gear box is reduced, the ground clearance of the reduction gear box is increased, and the trafficability of the sliding plate is improved.

The invention discloses a planetary multiple steering mechanism and a driving method thereof, the steering mechanism 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 rotationally 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.

This utility model relates to a steering wheel walking mechanism for ridged planting land, comprising a frame, a drive assembly, and tracks. The drive assembly is mounted on the frame, and a mounting frame is located on the outer bottom of the frame. A drive wheel is located on the top of the mounting frame, and the drive assembly drives the drive wheel to rotate. Two pairs of support wheels are located at the bottom of the mounting frame. The tracks are wound around the drive wheel and the two pairs of support wheels, and are driven by the drive wheel. The steering wheel walking mechanism for ridged planting land provided by this utility model, by combining the mounting frame located on the outer bottom of the frame with the tracks, raises the height of the frame, thereby increasing the height of the chassis mounted above the frame. When moving on ridged planting land, it can prevent the chassis above the frame from colliding with the ridge. By increasing the ground clearance of the chassis and optimizing walking stability, agricultural machinery can adapt to complex terrain between ridges.

The invention relates to the technical field of commercial vehicle electric drive axles, and discloses a coaxial three-gear sequence gear shifting commercial vehicle electric drive axle integrated with a planet row differential reducer, which comprises a motor, a gear shifting system assembly, a speed reduction planet row assembly, a differential reduction planet row assembly and a differential lock assembly, the differential reduction planet row assembly is connected with the speed reduction planet row assembly, the differential lock assembly is arranged on one side of the differential reduction planet row assembly, a left half shaft and a right half shaft are connected to the differential reduction planet row assembly, one end of the left half shaft is located on the outer side of the gear shifting system assembly, and one end of the right half shaft is located in the differential lock assembly. The gear shifting system assembly is connected with the motor and the speed reduction planet row assembly. The sequential gear shifting structure is used, only one gear shifting system is designed, the number and weight of parts are reduced, the assembly and after-sale fault risks are reduced, and through sequential gear shifting, the possibility that a mechanical structure is fool-proof and gear skipping does not occur is achieved.

The utility model provides a transmission system and a vehicle. The transmission system comprises an engine which comprises an oil pan, and an oil storage cavity is formed in the oil pan; the speed reducer comprises a speed reducer shell and a first half shaft, the speed reducer shell is arranged on one side, in the first direction, of the oil pan and connected with the oil pan, the first half shaft extends in the first direction, one end of the first half shaft is located in the speed reducer shell, and the other end of the first half shaft is located in the oil pan. The first half shaft is arranged on the two opposite side walls of the oil pan in the first direction in a penetrating mode. The support assembly is arranged on the side, away from the speed reducer shell in the first direction, of the oil pan and connected with the oil pan, the support assembly is provided with a supporting hole, and the first half shaft further penetrates through the supporting hole. The integrated design of the speed reducer and the engine can be achieved, so that the installation convenience of the speed reducer is improved, and then the arrangement convenience of the transmission system on the vehicle is improved.

This invention discloses a suspension valve assembly, a hydropneumatic suspension system, and an all-terrain crane. The suspension valve assembly includes suspension valve assembly ports A, B, and SP; a first electromagnetic directional valve connected between suspension valve assembly port B and hydraulic oil tank inlet P, controlling the flow of hydraulic fluid into the small chamber of the suspension cylinder; a second electromagnetic directional valve connected between suspension valve assembly port A and hydraulic oil tank inlet P, controlling the flow of hydraulic fluid into the large chamber of the suspension cylinder; a third electromagnetic directional valve connected between suspension valve assembly port A and hydraulic oil tank return port T, controlling the flow of hydraulic fluid from the large chamber of the suspension cylinder back to the hydraulic oil tank; a suspension spring stiffness switching valve connected between suspension valve assembly port A and hydraulic oil tank return port T, controlling the interaction between the hydraulic fluid in the large chamber of the suspension cylinder and the accumulator; and a fourth electromagnetic directional valve connected between suspension valve assembly ports B and SP, controlling the interaction between the hydraulic fluid in the small chamber of the suspension cylinder and the accumulator. This solution enables the vehicle to have a lifting suspension function after being supported by a crane.

A large-bearing stress structure frame is suitable for a 5000-meter desert vehicle-mounted petroleum drilling and workover rig and is characterized in that a spliced I-shaped steel frame beam structure is adopted, and a spliced I-shaped steel frame beam is provided with an upper wing plate and a lower wing plate with variable cross sections, an integral web plate and double web plates arranged at the positions where local stress is large; six sets of supporting legs are arranged on the front portion, the middle portion and the rear portion of the frame in total and comprise four sets of hydraulic supporting legs and two sets of mechanical supporting legs, and the six sets of supporting legs are used for transmitting loads to the ground nearby at the large stress position, reducing the internal stress of the frame and achieving supporting and bearing in the vehicle transportation and drilling operation process on the premise of light weight. The frame mainly comprises a left longitudinal beam, a right longitudinal beam, a front hydraulic supporting leg, a cross beam, a front jack beam hydraulic supporting leg, a front jack beam, a middle mechanical supporting leg, a lifting cylinder beam, a lifting cylinder beam hydraulic supporting leg, a rear jack beam, a rear mechanical supporting leg and a rear jack beam hydraulic supporting leg.

The utility model discloses a remote control car frame main body structure and relates to the technical field of frames, frame side plates are arranged on two sides of a bottom sealing plate, an integrated sunken chassis is arranged on the front side and the rear side of the bottom sealing plate, a gear box is arranged on the integrated sunken chassis, and a central gear box is arranged in the middle of the bottom sealing plate. An equipment box connected with the frame side plates on the two sides is arranged between the central gear box and the integrated sunken chassis on the front side; the frame side plates are connected with the integrated sunken chassis at the front and rear ends, and a plurality of hollows are formed in the side walls of the frame side plates. The bottom of the integrated sunken chassis is lower than the bottom of the bottom sealing plate. The frame side plates are used for replacing a traditional middle supporting structure, and the wholeness sense is higher while the rigidity is guaranteed; the side plate of the frame is provided with a large number of hollows, the shape is optimized, the bearing capacity of equipment is reserved, and the weight of the whole vehicle is greatly reduced. The front-and-back integrated sunken chassis design is lower than the bottom surface of the side plate of the frame, so that the ground clearance of the chassis is increased, and the control performance of the whole vehicle is further improved.

The application discloses a kind of wheel and vehicle, it is related to vehicle technical field.Wheel includes wheel rim, rotating support component, tire and transmission gear;Tire is set to the outer circle surface of wheel rim, rotating support component is slidably connected to the inner circle surface of wheel rim, rotating support component is connected with vehicle body, rotating support component includes frame and multiple pulleys, multiple pulleys are connected to frame and are slidably connected with the inner circle surface of wheel rim, the inner circle surface of wheel rim is provided with gear ring along the circumferential direction of wheel rim, transmission gear is engaged with gear ring transmission, and transmission gear is connected with the output end of driving structure, to drive wheel rim rotation, since transmission gear is engaged with the gear ring of the inner circle surface of wheel rim transmission, so that transmission gear can be set in the upper area of wheel, to ensure that the output end of driving structure is located in the upper area of wheel, to improve the off-the-ground height of the output end of driving structure, while guaranteeing vehicle structure cost and vehicle weight, the passing performance of vehicle can be improved.

The utility model discloses a walking wheel lifting mechanism (100) and cleaning equipment (1000). The walking wheel lifting mechanism (100) comprises a walking wheel assembly (10), a power assembly (20) and a flexible connecting piece (30). The power assembly (20) comprises a rotating power element (21) and a rotating disc (22), and the rotating power element (21) is used for driving the rotating disc (22) to rotate in two opposite directions; the flexible connecting piece (30) is arranged between the walking wheel assembly (10) and the rotating disc (22) and used for enabling the walking wheel assembly (10) to rotate relative to the equipment body (200) by changing the length exposed between the walking wheel assembly (10) and the rotating disc (22) in the rotating process of the rotating disc (22), and the walking wheel assembly (10) makes contact with the ground all the time in the rotating process. The rotating angle of the rotating disc (22) in the rotating process of the walking wheel assembly (10) does not exceed 360 degrees.

The utility model discloses a new energy commercial vehicle battery pack installation device, which relates to the technical field of new energy vehicles, and comprises a longitudinal beam and a battery pack arranged on the longitudinal beam, the battery pack is provided with a side support, and the side support is connected with the longitudinal beam. The battery pack is directly connected with the longitudinal beam of the automobile through the side bracket on the battery pack, so that the occupation of the battery pack on the Z-direction space of the automobile body is reduced, the ground clearance of the battery pack is increased, the capacity and size of the battery pack are conveniently increased, and the bearing capacity of the automobile is further conveniently improved.

The present disclosure relates to a side step mounting structure and a vehicle, the side step mounting structure comprising a bracket connected to the inner side of a rocker beam of the vehicle; wherein the vehicle comprises a side step mechanism, a first part of a mounting seat of the side step mechanism being connected to the rocker beam, and a second part of the mounting seat of the side step mechanism being connected to the bracket. Through the above structure design, the present disclosure provides another connection position for the mounting seat besides the rocker beam by the bracket, improves the mounting strength and stability of the side step mechanism, and does not increase the requirement for the inner side width of the rocker beam, thereby being suitable for the design of moving the door frame stopper inward, and providing greater space for the vehicle exterior modeling design. Meanwhile, due to the lower requirement for the inner side width of the rocker beam, greater freedom can be provided for the production design and after-sales maintenance of the rocker peripheral area, which is beneficial to optimizing the production process and maintenance convenience of the vehicle.

The invention relates to the technical field of tricycles, in particular to a rear axle braking structure and a tricycle, and the rear axle braking structure comprises a rocker arm, a shell, a telescopic mechanism and an adjusting mechanism; one end of the rocker arm is connected with a hand brake stay wire of the tricycle, the other end of the rocker arm is connected with the telescopic mechanism, and the rocker arm can rotate in the radial direction of the telescopic mechanism; the shell is arranged between the rocker arm and a shoe block of the tricycle, a hydraulic cavity is formed in the shell, the telescopic mechanism is arranged at the end, facing the rocker arm, of the hydraulic cavity, and the adjusting mechanism is arranged at the end, facing the shoe block, of the hydraulic cavity and connected with the shoe block. The telescopic mechanism can be close to or away from the adjusting mechanism along with rotation of the rocker arm so as to drive the adjusting mechanism to open or tension the shoe block. According to the rear axle braking structure and the tricycle using the rear axle braking structure, the braking hand feeling of a hand brake can be improved, and due to the lever ratio adjustment of the rear axle braking structure, the ground clearance of the rear axle braking structure can be increased, so that the passing performance of the tricycle is enhanced.

The obstacle clearing mechanism comprises a vehicle body, a clearing mechanism body used for clearing obstacles is arranged on one side of the surface of the vehicle body, the clearing mechanism body comprises a transmission rod, mounting plates and a push plate, the transmission rod is movably arranged on one side of the surface of the vehicle body through a bearing, and the mounting plates are fixedly arranged at the two ends of the transmission rod. A push plate is fixedly arranged on the outer side surface of the mounting plate, a transmission mechanism for driving the push plate to rotate is arranged between the surface of the vehicle body and the push plate, roller assemblies are arranged on the two sides of the surface of the vehicle body, and the outer side surfaces of the roller assemblies are sleeved with running tracks. The cleaning mechanism is used for pushing away sundries in front of the running path of the device, and the sundries can be separated towards the two sides due to the guide plate, so that the trafficability of the device can be greatly improved.

The utility model relates to the technical field of oblique bevel gear torque dividing, and particularly discloses an oblique bevel gear torque dividing device which comprises a box body, one end of the box body is rotationally provided with a front input shaft, the front input shaft is connected with a front output shaft and a rear output shaft through a differential transmission mechanism, and the differential transmission mechanism is connected with an oblique bevel gear. The oblique bevel gear is meshed with a front output shaft oblique bevel gear; the front output shaft oblique bevel gear is arranged on the front output shaft; and the rear output shaft and the front input shaft are coaxially arranged. By arranging an oblique bevel gear and a front output shaft oblique bevel gear, a certain included angle is formed between the rotating axis of the front output shaft and the rotating axis of the input shaft, the shaft distance between the two shafts in the vertical direction is shortened, the ground clearance of the oblique bevel gear torque dividing device is large, and the reliability of the oblique bevel gear torque dividing device is effectively improved; the utility model further discloses a hinged dumper comprising the oblique bevel gear torque dividing device.

The utility model provides a guide kite reel, which belongs to the technical field of kite wheels and is characterized in that a winding locking wheel is inserted on an installation column, a guide rod is further provided with a locking mechanism matched with the locking wheel, a kite line is wound on the winding locking wheel, and one end of the kite line extends along the guide rod; the locking mechanism comprises a pressing plate, a locking plate and a mounting part, the pressing plate is connected with the locking plate, the pressing plate and the locking plate are both arranged on the mounting part, the mounting part is arranged on the guide rod, and the end, away from the pressing plate, of the locking plate is tightly attached to the winding locking wheel; the guide rod guides the end, away from the winding locking wheel, of the kite line, the kite line is conveniently released, the kite releasing difficulty is lowered, the distance between the kite and the ground is increased under the action of the guide rod, and the kite releasing difficulty can be lowered; the winding locking wheel is used for controlling the kite line to be wound and unwound, and the difficulty is reduced.

The utility model discloses a novel material clamping device, which relates to the technical field of material taking equipment, and comprises two groups of material grabbing components which are arranged on an adjusting table in the same direction and are used for clamping two sides of a workpiece, and the material grabbing components carry and transfer the workpiece by virtue of a forward moving component arranged on the adjusting table; a hollow screw with a rotating wheel at the end and a solid screw with a rotating wheel at the end are coaxially connected into the adjusting table in a sleeved mode, the two sets of material grabbing assemblies are combined with the corresponding hollow screw and the corresponding solid screw through installation bases, and when the material grabbing assemblies carry workpieces through the advancing assemblies, push-pull air cylinders arranged on the installation bases can turn over the material grabbing assemblies so as to increase the ground clearance of the workpieces. Compared with the prior art, the position of the clamping jaw can be independently adjusted, a proper clamping point can be found on an irregular workpiece, and the clamping stability is improved.

A symmetrical wheel edge dual-motor planetary gear train driving and transmission device for an electric commercial vehicle comprises a left half shaft and a right half shaft which are the same, each half shaft comprises a permanent magnet synchronous motor MG, the output of each permanent magnet synchronous motor MG is connected with one end of a synchronizer gear shifting mechanism through a first planetary gear train, and the other end of each synchronizer gear shifting mechanism is connected to one end of an output shaft; the other end of the output shaft is connected with a wheel-side planetary gear train, a disc type motor MG is installed on the output shaft, and the output of the disc type motor MG is connected with the input of a wheel through the wheel-side planetary gear train. A motor driver of the permanent magnet synchronous motor MG and a motor driver of the disc type motor MG are connected with the battery; the driving device is simple in structure, small in size and light in weight, larger torque can be output under the smaller size due to the application of the disc type motor, and the driving device can have better power performance, energy-saving performance and control performance due to the fact that two rows of planetary gear trains are adopted to achieve two working modes; the device has the advantages of good economic dynamic property, high transmission efficiency and simplicity in operation.

The utility model provides an active damping device, an active suspension and a vehicle, the active damping device comprises a damper, a lifting oil way and a bypass oil way, the damper comprises an inner cylinder body and an outer cylinder body, the inner cylinder body is arranged in a first cavity of the outer cylinder body in a penetrating mode, and the inner cylinder body is provided with a second cavity; the lifting oil way communicates with the first cavity and the second cavity and is connected with a hydraulic pump in series. The hydraulic pump is used for driving hydraulic oil to flow into the first cavity and the second cavity so as to drive the inner cylinder body to move relative to the outer cylinder body. The bypass oil way communicates with the first cavity and the second cavity and is connected with an electromagnetic valve in series, and the electromagnetic valve is used for opening and closing the bypass oil way. According to the active damping device provided by the embodiment of the invention, damping can be performed through the bypass oil way when the damper is lifted, so that a vehicle can still have a better damping effect after the ground clearance is changed; and moreover, the shock absorber can have multiple shock absorption modes, so that the shock absorber can adapt to more driving working conditions, and the applicability of the shock absorber is improved.

The utility model relates to a CTB integrated die-casting vehicle body structure, which belongs to the field of vehicle bodies of new energy vehicles and comprises a vehicle body chassis, a battery cell and a vehicle body floor. A concave structure is arranged in the middle of the vehicle body chassis; the plurality of battery cells are mounted in the downward concave structure; the vehicle body floor is mounted at the upper end of the concave structure; a liquid cooling channel is arranged in the vehicle body floor, a liquid cooling inlet and outlet connector communicated with the liquid cooling channel is arranged at one end of the upper portion of the vehicle body floor, and cooling liquid enters and exits the liquid cooling channel through the liquid cooling inlet and outlet connector. According to the utility model, vehicle body parts are reduced, the thickness of the vehicle body floor is reduced, the assembly process is simplified, and the vehicle body strength is high.

The utility model discloses a discharging device of a bag making machine, which comprises a rack, a fixed roller group, a floating roller group, a front film guide component and a film frame arm, and further comprises an acting cylinder support and a first acting cylinder, the floating roller group is arranged at the bottom of the inner side of the rack through a vertical guide mechanism and is correspondingly arranged below the fixed roller group; the fixed roller set and the floating roller set each comprise a plurality of parallel roller shafts which are arranged in a staggered mode. The acting cylinder support horizontally stretches across and is erected on large plates on the two sides of the machine frame, the first acting cylinder is vertically installed on the acting cylinder support with the head facing downwards, and the end of a piston rod of the first acting cylinder is connected with the floating roller set and drives the floating roller set to horizontally move up and down. According to the discharging device of the bag making machine, the lower roller set is arranged to be the floating roller set horizontally moving up and down, meanwhile, the acting cylinder is driven to be arranged upwards, the floating stroke is greatly increased, the capacity of a buffering workshop section is enlarged, and the operation efficiency of the bag making machine is improved.

The utility model discloses a desert nursery stock transport vehicle based on hydraulic self -adaptation chassis, including self -adaptation chassis, car, guide rail frame, snatch mechanical arm and radar etc. Self -adaptation chassis is equipped with the walking wheel of independent height adjustable and independent steering system, can adapt to the complex desert topography, car is used for loading nursery stock, guide rail frame and snatch mechanical arm realize the automation nursery stock snatch, and radar provides accurate positioning. The utility model solves the problem that the traditional transport vehicle is poor in desert environment, and the positioning is not accurate, and the operation efficiency is low, and has the advantages of strong topographic adaptability, accurate positioning, high degree of automation operation, good nursery stock protection, especially suitable for the nursery stock transport operation in desert greening engineering.

The utility model discloses a kind of lifting devices of road maintenance vehicle front water spray frame, comprising: two guide shafts are arranged on front water spray frame mounting bracket left and right parallelly;Transition lifting frame and main lifting frame left and right ends are slidably connected two guide shafts respectively, to make transition lifting frame and main lifting frame can move up and down along guide shaft;Front electric push rod and rear electric push rod are respectively arranged in transition lifting frame front and back side, transition lifting frame moves up and down by the telescopic of front electric push rod, and the spray pole spray frame assembly connected with main lifting frame moves up and down by the initiative and / or passive of rear electric push rod. The utility model carries out two section structure lifting to road maintenance vehicle front water spray frame, under the action of two lifting power sources, improve the ground clearance of maintenance vehicle front water spray frame under non-operation condition, and enough to improve lifting speed.

The utility model relates to the technical field of unmanned aerial vehicle nacels.The unmanned aerial vehicle and nacelle structure comprises an unmanned aerial vehicle body, a connecting column is fixedly connected to the bottom of the unmanned aerial vehicle body, a nacelle body is arranged at the bottom of the unmanned aerial vehicle body, and a connecting groove is formed in the top of the nacelle body; two sets of fastening grooves are formed in the inner cavity wall of the connecting groove, fastening mechanisms are arranged in inner cavities of the fastening grooves, clamping blocks are arranged in inner cavities of the fastening grooves, and in the process that the connecting column is inserted into the connecting groove, under the effect of chamfers, the clamping blocks compress the fastening mechanisms towards the interior of the fastening grooves, the fastening mechanisms are clamped into the clamping grooves after reaching the positions of the clamping grooves, and then installation of the pod body can be completed. During disassembly, the pod body is pushed upwards till the clamping blocks attached to the unmanned aerial vehicle body are separated from the clamping grooves, the pod body is rotated by 90 degrees, the connecting columns are separated from the connecting grooves, separation is completed, and the problem that an existing unmanned aerial vehicle pod cannot be rapidly assembled and disassembled is solved.

The invention relates to the technical field of commercial passenger cars, and discloses a rear-mounted commercial passenger car exhaust structure and an automobile. The rear-mounted commercial passenger car exhaust structure comprises a silencer, the rear end of a silencing net in the silencer is connected with an exhaust tail pipe, the rear end of the exhaust tail pipe extends to the outer side of a rear wall, and the front end of the exhaust tail pipe is provided with a bent pipe section connected with the rear end of the silencing net; the section of the bent pipe section is in a semi-arc shape, and the bent pipe section is arranged in an inverted mode so as to increase the ground clearance. The distance between the highest passing point of the bent pipe section and the ground can be effectively increased, accumulated water on the road surface can be effectively prevented from flowing backwards into the silencer under the extreme water accumulation condition, the interior of the silencer is prevented from being corroded by the accumulated water and sludge, irreversible damage caused by internal blockage of the silencer and the like is prevented, the service life of the exhaust silencer or a post-processing system is prolonged, and the service life of the exhaust silencer or the post-processing system is prolonged. In addition, tail gas is discharged smoothly, it is guaranteed that the vehicle still has stable power output in an extremely severe environment, and the trafficability of the vehicle is improved.

The utility model discloses a driving wheel lifting mechanism (100) and cleaning equipment (1000). The driving wheel lifting mechanism (100) comprises a driving wheel assembly (10), a power assembly (20) and a flexible connecting piece (30). The driving wheel assembly (10) comprises a driving device (13), a transmission device (11) and a driven driving wheel (12); the transmission device (11) is rotationally connected with the equipment body (200), the transmission device (11) comprises a main wheel part (a) and a free part (b), and the main wheel part (a) is close to the driving wheel (12) relative to the free part (b); the flexible connecting piece (30) is connected between the free part (b) of the transmission device (11) and the power assembly (20) and used for driving the transmission device (11) to rotate relative to the equipment body (200) under driving of the power assembly (20), so that the driving wheel assembly (10) ascends and descends relative to the equipment body (200).