2750results about "Endless track vehicles" patented technology

Tracked vehicles include a track assembly, a powertrain assembly to power the track assembly, and a steering assembly configured to provide a torque to the track assembly. A steering motor is operably coupled to the powertrain assembly to effectuate a steering of the vehicle. A backup steering assembly is configured to provide backup steering capability to the tracked vehicle. The tracked vehicle also includes a plurality of steering modes, as well as a plurality of suspension components configured to increase rider comfort.

The invention discloses a rotating wheel nondestructive testing robot and a testing method thereof, and belongs to the technical field of specialized robots and nondestructive testing. The rotating wheel nondestructive testing robot comprises a permanent magnet adsorption walking mechanism, a multi-degree-of-freedom mechanical arm, a module flaw detection unit, a multi-sensor positioning system and a central controller; the adsorption walking mechanism is used for realizing all-attitude stable crawling on the curved surface of the rotating wheel; the multi-degree-of-freedom mechanical arm is arranged above the middle part of the permanent magnet adsorption walking mechanism and is used for moving the module flaw detection unit to a specified position; the module flaw detection unit is used for performing high-resolution detection on the damage of the composite material on the rotating wheel; the multi-sensor positioning system is used for real-time pose feedback of the robot; the central controller is used for controlling all the components to work cooperatively. According to the nondestructive detection robot for the runner and the detection method thereof, the problems that in the prior art, detection of internal cracks of turbine runner blades depends on a manual frame erecting mode, the high-altitude operation risk is large, the number of detection blind areas is large, and efficiency is low can be effectively solved.

The invention discloses an early warning method and device for climbing instability of a crawler unmanned vehicle and a medium, and relates to the technical field of unmanned vehicle climbing control. The early warning method comprises the steps that a digital twin model of the tracked unmanned vehicle is constructed, the digital twin model fuses a motor dynamic model and a whole vehicle dynamic model, and virtual scene data is generated; real-time data of a multi-source sensor of the tracked unmanned vehicle are obtained, wherein the real-time data comprise vehicle posture data, environment data and driving system data; and constructing a time convolutional network prediction model based on transfer learning, performing pre-training by using virtual scene data as source domain data, and performing fine tuning by using real-time data as target domain data to form a target domain prediction model. And inputting the current data into the target domain prediction model, and outputting a predicted vehicle state parameter prediction sequence. According to the vehicle state parameter prediction sequence and a preset safety threshold value, the instability risk is evaluated, an early warning signal is sent out, and the generation logic of the early warning signal is evaluated and optimized through an early warning performance loss function.

The invention belongs to the field of high-voltage cables, particularly relates to self-propelled unfolding equipment for high-voltage cables, and aims to solve the problems that the use position of an existing cable reel is fixed, a fixed pay-off rack is adopted at present, and once the cable reel is erected, the position of the pay-off rack is fixed and cannot be adjusted in the later period. And no self-adaptive cable reel adjusting function exists. And automatic leveling is realized without a cable reel. In order to solve the problem that in the prior art, a cable reel brake function does not exist, according to the scheme, the crawler-type walking device comprises a crawler-type walking device body, an upper frame, a hoisting mechanism and a cable reel support, the crawler-type walking device body is horizontally arranged on the ground, and the upper frame is arranged on the crawler-type walking device body. The cable reel support achieves independent height and interval adjustment through a lifting mechanism (a lifting oil cylinder and an inner rod and outer barrel structure) and a contraction and expansion mechanism (a telescopic oil cylinder and a sliding block and sliding groove), can adapt to cable reels of different specifications, achieves automatic leveling through an electric control system, and avoids equipment damage or operation interruption caused by unbalance loading.

An elastic crawler has, on a tread side, drive lugs including a central lug portion arranged in a crawler width direction between engaging holes of a crawler main body and side lug portions arranged alternately on one side in the crawler width direction, corresponding to the central lug portions on both sides in a crawler revolving direction of the engaging holes, and an inter-lug recess arranged between the side lug portions on both sides in the crawler revolving direction on an opposite side to the side lug portion with respect to the engaging holes, and the side lug portions each have a wide lug portion on a side closer to the central lug portion, and the wide lug portion is integrally formed with two central lug portions adjacent to each other in the crawler revolving direction, straddling two core metals adjacent to each other in the crawler revolving direction.

The invention discloses a folding crawler chassis of an amphibious pipeline robot, and relates to the technical field of pipeline machines. The device comprises a chassis assembly; the chassis assembly comprises a shell, four rotating plates connected through torque springs are hinged to the outer bottom of the shell, propellers are installed at the ends of the rotating plates, vertical plates are fixedly connected to the outer walls of the propellers, and first electromagnets are fixedly connected to the tops of the vertical plates; track assemblies are symmetrically and rotationally connected to the opposite side faces of the shell, each track assembly comprises a waterproof box, and a triangular block is fixedly connected to the outer top of each waterproof box. By using the device, the device can rapidly adapt to advancing on land and on a waterway in a pipeline, upward swinging of the crawler belt assemblies and unfolding of the propellers are synchronously achieved, the using convenience and the amphibious rapid switching efficiency are effectively improved, and then the working efficiency is improved.

The invention relates to the technical field of vehicle safety auxiliary devices, and discloses an automobile multifunctional crawler-type anti-skid escape device which comprises tires, electric hydraulic cylinders and four sets of independently-controlled driving crawlers. Wherein the two groups of driving tracks are transversely arranged at the edge positions of the front end and the rear end of the automobile chassis to form a transverse track assembly; the vehicle body is lifted through the transverse track assembly, key parts are prevented from being eroded by accumulated water, and water flow impact is relieved; and thirdly, by means of independent control of the four sets of caterpillar bands, the vehicle is endowed with flexible maneuvering functions such as pivot steering and transverse movement, and accurate parking in a narrow space and obstacle avoidance are assisted. The whole structure is designed based on vehicle model customization, and an active and multifunctional driving safety guarantee means is provided for a driver on the premise that an original vehicle framework is not changed.

The invention discloses a mobile intelligent ferry vehicle for a photovoltaic cleaning robot. The mobile intelligent ferry vehicle comprises a mobile system; a parking support; the rotating system is mounted between the box chassis and the parking bracket and is used for driving the parking bracket to rotate; the shear type lifting system is arranged between the rotating system and the parking support; the shear type lifting system comprises a set of supports capable of being independently adjusted and used for adjusting the height and the gradient of the parking support. The translation system is arranged between the shear type lifting system and the parking bracket and is used for driving the parking bracket to linearly move; the management control system is configured to obtain relative pose parameters of the parking bracket and the photovoltaic bracket; and based on the relative pose parameters, the rotating system, the shear type lifting system and the translation system are controlled to cooperatively act, so that the planeness, the side edge parallelism, the coaxiality and the clearance degree of the parking support and the photovoltaic support meet preset threshold values. The invention further discloses an operation method of the mobile intelligent ferry vehicle for the photovoltaic cleaning robot.

The invention provides a track driving wheel and an intelligent desert seedling planting vehicle. The track driving wheel comprises a power wheel; the external hanging wheel is coaxially arranged on one side of the power wheel, and the external hanging wheel and the power wheel are rotatably connected within a preset angle range; the plurality of track shoes are uniformly distributed on the circumference of the external hanging wheel, and the middle part of each track shoe is hinged with the outer edge of the external hanging wheel; each track shoe is arranged on the outer edge of the external hanging wheel through the corresponding first connecting rod in an openable and closable mode, one end of each first connecting rod is hinged to the corresponding track shoe, and the other end of each first connecting rod is connected with the power wheel and the external hanging wheel at the same time through a first pin shaft; in the first state, the track shoe is in an open state, and the free end of the track shoe can stir a soft medium to walk on a soft surface; in the second state, when the track shoe is in contact with the hard ground, the track shoe bodies are in a closed state and jointly form a wheel-shaped structure so as to walk on the hard ground; according to the invention, stable and flexible walking and hole-forming seedling planting on the sand land and the hard ground can be realized at the same time.

Endless tracks for track systems and track systems having endless tracks are disclosed. One endless track includes a carcass, inner lugs extending from an inner surface of the carcass and outer lugs extending from an outer surface of the carcass. The outer lugs each include first and second outer lugs portions. The first outer lug portion, which extends from the outer surface to a junction height, has a junction interface at the junction height, has an outer lug reinforcing member, defines a base radius and is made of a first material. The second outer lug portion, which extending from the junction interface to an outer lug height, has an engaging surface at the outer lug height, and is made of a second material different from the first material. Each outer lug also has a draft angle defined by a longitudinal side thereof and a projection of its engaging surface.

The invention belongs to the technical field of wharf transportation, and discloses a liftable climbing type tracked carrier which comprises a frame, a track assembly is arranged at the bottom of the frame, two side plates are arranged on the frame at intervals, and a plurality of rolling shafts are rotationally arranged between the two side plates in the length direction of the side plates. A driving assembly for driving the rolling shafts to synchronously roll is arranged in the frame, two brackets are arranged in the frame in the length direction of the frame, a plurality of strip-shaped grating plates are arranged on the brackets at intervals in the length direction of the frame, the strip-shaped grating plates and the rolling shafts are arranged in a staggered mode, and a lifting assembly for driving the brackets to ascend and descend is arranged in the frame. Rotating shafts perpendicular to the length direction of the frame are rotationally arranged at the front end and the rear end of the bottom of the frame, tripods are arranged at the two ends of the rotating shafts, supporting leg oil cylinders are arranged on the tripods, and rotating assemblies for driving the rotating shafts to rotate are arranged in the frame. The automatic loading and unloading device can realize height adjustment and automatic loading and unloading of goods, and is simple in structure and high in practicability.

The invention relates to a steering device (19) comprising a steering gear (35) and an electric machine (39) which can be operated both as an electric motor and as a generator, the steering gear (35) having a first input shaft (36), a second input shaft (37) which is connected (39) to the electric machine, a neutral shaft (18), and a superposition stage (40) which has a first element (45), a second element (46), and a third element (47). At the superposition stage (40), a rotational movement of the first element (45) can be converted into a rotational movement of the third element (47) by superimposing a rotational movement of the second element (46), and by means of the superimposition in the steering gear (35), at least one steering ratio can be expanded to a continuously adjustable steering ratio range.In this case, the at least one steering ratio lies in terms of value between respective ends of the respective steering ratio range, wherein, during the superposition, starting from the at least one steering ratio, the widening takes place in the direction of one end of the respective steering ratio range in the generator operation of the electric machine (39) and in the direction of the other end of the respective steering ratio range in the electromotor operation of the electric machine (39).

The present invention relates to a thermally conductive rubber material and a rubber track. The preparation method of the rubber material comprises the steps of mixing a raw material composition; wherein, by weight, the raw material composition comprises: 100 parts of a rubber raw material; 20-30 parts of carbon fibers subjected to a first pretreatment; 25-35 parts of hexagonal boron nitride powder subjected to a second pretreatment; and 25-35 parts of nano powder subjected to a third pretreatment; wherein the average length of the carbon fibers is 3 mm to 10 mm; wherein the average particle size of the hexagonal boron nitride powder is 10 μm to 200 μm; wherein the average particle size of the nano powder is 5 nm to 100 nm, and the nano powder is selected from one or more of metal powder and metal oxide powder; wherein the first pretreatment comprises treating the carbon fibers with a silane coupling agent and then etching with CO2 plasma; wherein the second pretreatment comprises treating the hexagonal boron nitride powder with a silane coupling agent; and wherein the third pretreatment comprises treating the nano powder with a solution containing octadecylamine and stearic acid.

The invention relates to the technical field of agricultural machinery, in particular to a rotary gravity center regulating crawler platform for hills and mountains, which sequentially comprises a crawler chassis assembly, a gravity center regulating assembly and a functional module mounting platform from bottom to top, the gravity center adjusting layer is installed on the chassis rack and located in the space between the crawler belts on the two sides, the gravity center adjusting layer is composed of a supporting base, a slewing bearing module, a linear lead screw module, a battery balancing weight and a machine shell, and the balancing weight is preferably a power battery pack; and the functional module mounting platform is fixed at the upper end of the gravity center adjusting assembly. By adjusting the angular and radial distribution of the counterweights, the center-of-gravity position of the whole machine under the working conditions of cross slopes, longitudinal slopes and obstacle crossing is changed, the stability and driving safety of the crawler belt platform in complex terrains of hills and mountains are improved, and the crawler belt platform can be provided with different functional modules according to operation objects. The method is suitable for various hilly and mountainous region agriculture and engineering application scenes.

The present invention discloses a geological prospecting sampling device, which belongs to the field of geological prospecting technology. The technical solution is as follows: the device comprises a sampling tube arranged on a crawler vehicle frame, a rotating mechanism for driving the sampling tube to rotate, and a motion mechanism for driving the sampling tube and the rotating mechanism to move up and down; the sampling tube comprises an annular knife, a top connecting tube, and an intermediate tube; the intermediate tube comprises an outer tube, an inner tube, and a partition; an upper ring plate is arranged on the upper portion of the outer tube, an annular channel is formed between the upper ring plate and the outer tube, the partition is formed by splicing two semicircular plates, an ear plate is arranged on the outer wall of the inner tube, a connecting rod is arranged on the outer wall of the semicircular plate, the connecting rod is arranged on the ear plate via a connecting shaft, and an inner and outer annular connecting plates inserted into the annular channel are fixedly arranged on the lower end surface of the outer tube; the top connecting tube comprises an inner connecting tube and an outer connecting tube, the tops of the inner connecting tube and the outer connecting tube are sealed by a circular plate; a refrigerated gas inlet is arranged on the circular plate. The beneficial effects of the present invention are as follows: a geological prospecting sampling device is provided.

The utility model relates to the technical field of track lubrication, and discloses a lubricating track assembly which comprises a supporting piece, a driven wheel rotationally installed on one side of the supporting piece through a rotating shaft, a driving wheel rotationally installed on the other side of the supporting piece through a bearing, and a tooth block fixed to the surface of the driving wheel. By arranging a hollow oil guide plate, a wear-resistant contact piece and a second through hole, lubricating oil can be smeared on the surface of a tooth block of the driving wheel through the second through hole when the driving wheel rotates and drives the tooth block to rotate to pass through one side of the hollow oil guide plate; when the tooth block passes through one side of the wear-resistant contact piece, lubricating oil smeared on the surface of the tooth block is uniformly smeared on the surface of the crawler belt through the wear-resistant contact piece, and redundant lubricating oil is scraped off and is reserved on the surface of the second through hole, so that the surface of the driving wheel tooth block is lubricated; the problem that due to dry friction, the tooth blocks of the driving wheel can be greatly abraded after being used for a long time, and the tooth blocks are damaged is solved, the service life of the tooth blocks is relatively long, and the use cost is relatively reduced.

The invention relates to an underwater and land slope detection and cleaning device, and relates to the technical field of slope maintenance equipment. Comprising a suspension device and a cleaning / detecting device, the suspension device and the cleaning / detecting device are in linkage fit through a flexible rigging; a winch arranged in the cleaning / detecting device drives the cleaning / detecting device to move up and down along the slope track by controlling the tension and length of the flexible rigging; wherein the suspension device provides mechanical support and trajectory constraint, the cleaning / detecting device realizes function execution, and the suspension device and the cleaning / detecting device cooperate to complete positioning, advancing and cleaning / detecting tasks. The device is compact in structure, high in cleaning efficiency, accurate in detection and suitable for underwater and land complex slope scenes.

The present disclosure relates to a tracked chassis device, a tracked vehicle, and an adjustment method and system, and a readable storage medium, which relate to the field of construction machinery, and are used for enabling the tracked chassis device to travel normally when two tracked traveling devices are located on different working surfaces or on a working surface having a relatively steep slope. The tracked chassis device comprises a chassis mounting frame, at least two tracked traveling devices and at least one orientation adjusting device. The chassis mounting frame is fixedly connected to a chassis upper structure. The chassis mounting frame is located between the two tracked traveling devices. Each tracked traveling device is constructed to be capable of traveling. The orientation adjusting device is arranged between at least one tracked traveling device and the chassis mounting frame. The orientation adjusting device is constructed to adjust the orientation of each tracked traveling device relative to the chassis mounting frame. By means of the orientation adjusting device, whether the tracked chassis device travels on different working surfaces or on a working surface having a relatively steep slope, the two tracked traveling devices can come into contact with the ground, thereby improving the traveling capability of the tracked chassis device under various road conditions.

The invention discloses a sweeper and an anti-falling method thereof, and belongs to the technical field of photovoltaic panel sweeping, and the sweeper comprises a sweeping robot and is characterized by further comprising a control unit installed on the sweeping robot; the communication module is installed in the cleaning robot and used for wirelessly receiving and sending information through Bluetooth; the support is fixedly connected to the top of the cleaning robot, and one end of the support faces the advancing direction of the cleaning robot; the gap detection mechanism is installed on the support and used for detecting the width of the gap and judging whether the gap can pass or not; and the automatic opening and closing door is arranged in front of the anti-falling system and is used for shielding the anti-falling system. When the photovoltaic panel is cleaned, whether the gap can pass or not can be automatically detected, if yes, normal passing is achieved, if not, the control unit controls the automatic opening and closing door to be opened, the anti-falling system works normally, falling is prevented, and therefore the working efficiency is improved.

The hydraulic power plant material self-transportation system comprises a cargo truck and a path network, and the cargo truck walks along the path network; the truck comprises a bearing plate, a driving wheel set and a crawler wheel set which are installed at the bottom of the bearing plate, and a scene control system, a scene recognition system and an obstacle system which are integrated in the truck, and after the driving wheel set shrinks, the crawler wheel set makes contact with the ground to run; the scene control system comprises a level road scene, a slope scene, a pit scene, a stair scene and a threshold scene, the driving wheel set is used for driving the truck in the level road scene, the pit scene and the threshold scene, and the crawler wheel set is used for driving the truck in the slope scene and the stair scene; the scene recognition system comprises a far scene recognition module used for judging scene types and detecting long-distance obstacles, and a near scene recognition module used for accurately verifying scene parameters and recognizing short-distance obstacles. The obstacle system comprises an obstacle identification module and an obstacle avoidance module, and the obstacle identification module is used for identifying whether an obstacle exists on the path network when the truck walks along the path network; and the obstacle avoidance module adjusts the running route of the truck after the obstacle recognition module recognizes the obstacle. According to the invention, autonomous material transportation of the truck in a complex environment of a hydraulic power plant can be realized.

The invention provides a pitching robot suitable for stair walking and a walking method thereof.The pitching robot comprises a shell, a lifting chassis is arranged at the bottom of the shell, a first track assembly and a second track assembly are arranged at the front end and the rear end of the chassis correspondingly, and the first track assembly and the second track assembly are rotationally connected with the chassis; a swing air cylinder is arranged between the first track assembly and the second track assembly and the chassis. When the robot encounters a stair or a slope, the side track assemblies, the first track assemblies and the second track assemblies climb the stair or the slope, swing air cylinders at the two ends are driven so that the robot can incline slowly, and the first track assembly at the front end provides inclined downward pressure for the whole structure; the second track assembly at the rear end provides supporting force for the whole structure, so that the robot is kept stable when inclining, and the phenomena that the robot is prone to overturning backwards when ascending and prone to overturning forwards when descending, and the stability is poor are avoided.

According to the four-swing-arm six-crawler-type cable trench inspection robot and the obstacle crossing control method thereof, the use of motors and corresponding structures can be reduced, and therefore the robot is compact in structure, good in reliability and particularly suitable for being used in limited environments such as cable trenches. The robot structurally comprises a main vehicle body, front swing arm assemblies and rear swing arm assemblies, the swing arm assemblies are connected with power shafts, the power shafts comprise solid shafts and hollow shafts, steering engines control the corresponding front swing arm assemblies or the corresponding rear swing arm assemblies to swing through the corresponding solid shafts, and the hollow shafts are installed outside the solid shafts coaxial with the hollow shafts and can rotate relative to the solid shafts. The driven crawler wheels can drive the hollow shafts on the corresponding sides of the front portion of the main vehicle body to rotate and drive the crawler belts of the front swing arm assemblies on the corresponding sides to move through the hollow shafts, and the hollow shafts on the front portion of the main vehicle body are further connected with the hollow shafts on the corresponding sides of the rear portion of the main vehicle body through transmission synchronous belts. And the hollow shaft at the rear part of the main vehicle body can drive the crawler belt of the rear swing arm assembly at the corresponding side to move.

The invention provides a reinforcement cage autonomous manufacturing, transferring and installing device and method, and relates to the field of reinforcement cage manufacturing and installing.The device comprises an integrated crawler-type carrier provided with a material storage bin, the material storage bin comprises a main reinforcement storage area and a stirrup storage area, and a sorting mechanical arm is arranged in the material storage bin; the hydraulic erecting bearing platform comprises a bearing platform frame with the tail end hinged to the integrated crawler-type carrier and a hydraulic system used for driving the bearing platform frame to be overturned to the vertical state. Each gantry crane robot comprises a rectangular-ambulatory-plane frame installed on the bearing platform frame in a sliding mode, a first universal mechanical arm, a second universal mechanical arm and supporting claws, the first universal mechanical arm and the second universal mechanical arm are arranged on the inner walls of the two sides of the rectangular-ambulatory-plane frame and used for grabbing the main reinforcements and the stirrups, the supporting claws are arranged on the other two side walls of the rectangular-ambulatory-plane frame and used for fixing the main reinforcements, and a welding gun is arranged on the first universal mechanical arm; a hydraulic pulley used for driving the hoop reinforcement cage to rotate and advance in the concentric-square-shaped frame is arranged in the concentric-square-shaped frame. The manufacturing, transferring and mounting efficiency of the reinforcement cage can be improved.

The invention discloses an anti-explosion inspection robot walking mechanism with a self-adaptive track tensioning adjusting function, which comprises an adjusting box, adjusting rods are respectively arranged on a group of opposite outer walls of the adjusting box, a supporting wheel is arranged on one adjusting rod, a driving wheel is arranged on the other adjusting rod, a coupler is further arranged on the driving wheel, and the supporting wheel is connected with the coupler. A lifting rod is arranged at the bottom of the adjusting box, a loading wheel is arranged at the free end of the lifting rod, the adjusting rod is in linkage with the lifting rod, the outer sides of the driving wheel, the supporting wheel and the loading wheel are sleeved with a crawler belt, and when the adjusting rod moves towards the outside of the adjusting box, the lifting rod moves towards the inside of the adjusting box; when the adjusting rods move towards the interior of the adjusting box, the lifting rods move towards the exterior of the adjusting box, and the moving distance of the lifting rods does not exceed the sum of the moving distances of the two adjusting rods within the same time. The height of the gravity center of the robot can be adjusted while the crawler belt is tensioned, the driving requirements on different road surfaces are met, and the situation that the robot is stranded due to the too low center when driving on a rugged road surface can be avoided.

The invention discloses a manual underground steel lining gas storage inspection device, which comprises a main body frame, a monitoring unit and a power unit, and is characterized in that the main body frame is of a rectangular frame structure formed by splicing two vertical columns, two cross beams and a rectangular welding bottom plate; the power unit comprises two driving motors, the two driving motors are horizontally and symmetrically installed in the middle of the upper surface of the bottom plate, output shafts of the two driving motors extend towards the left side and the right side correspondingly, and a ninth gear and a tenth gear are coaxially fixed to the left end and the right end of each output shaft correspondingly. The two driving motors are further connected with two magnetic crawler belts through transmission structures respectively, the cross beam is connected with a monitoring unit and a power device respectively, the two driving motors, the monitoring unit and the power device are jointly connected with a PLC, and the PLC is connected with an alarm lamp. The invention further discloses a gas storage inspection method. According to the manual underground steel lining gas storage inspection device and method disclosed by the invention, the problems of high in-storage omission ratio and low inspection efficiency in the prior art are solved.

A damping control system is provided for an off-road recreational vehicles having a suspension located between a ground engaging member and a vehicle frame and including at least one adjustable shock absorber having an adjustable damping characteristic based on an input from a sensor.

The present invention provides for a crawler type vehicle (10) configured for traveling in a suspended manner especially headlong at a structure, wherein the vehicle (10) exhibits a plurality of suspension elements configured for suspending the vehicle (10) and configured for coupling the vehicle (10) to the structure, and at least one drive unit (11, 11a, 11b, 11c) configured for circumferential driving motion and accommodating a first circumferential track and a second circumferential track having a different circumferential shape / contour than the first circumferential track. The present invention provides for a method of driving a crawler type vehicle (10) for traveling in a suspended manner especially headlong at a structure.

The present disclosure provides a cleaning device, including a cleaning device body, a liquid inlet portion, a liquid outlet portion, a filtering mechanism, and a mode switching member. The filtering mechanism includes at least a filtering box. The filtering box includes at least a filtering box opening for water surface cleaning, a filtering box roller brush assembly, and a drive gear. The filtering box roller brush assembly is disposed at the filtering box opening for water surface cleaning. The drive gear is configured to drive the filtering box roller brush assembly to rotate. The mode switching member is configured for the cleaning device to be switched from a first motion state to a third motion state via a second motion state. A posture of the cleaning device in the first motion state is substantially identical to a posture of the cleaning device in the third motion state.

A damping control system is provided for an off-road recreational vehicles having a suspension located between a ground engaging member and a vehicle frame and including at least one adjustable shock absorber having an adjustable damping characteristic based on an input from a sensor.

A new tracked vehicle arrangement with a main vehicle and a trailer, where each of the main vehicle and the trailer have a track assembly on either side, and the tracks of the trailer are driven by the prime mover of the main vehicle. In the longitudinal direction of the main vehicle, only a small fraction (less than 25%) of the length of the main vehicle's cab, which is mounted above the frame, overlies the main vehicle's track assemblies, whereas the fuel tank is located between the cab and the prime mover. In a widthwise direction of the tracked vehicle, the fuel tank at least partly overlies the right and left track assemblies. This provides a counterbalance for the trailer, which has a platform attached by a first pivotable connection to the frame of the main vehicle and by a second pivotable connection to the frame of the trailer.