115results about How to "Ground pressure is small" patented technology

The present invention discloses a tail device and a tail dragging method. The tail device comprises: a tail end row which at least comprises a boom system, a travelling mechanism and a lifting mechanism, wherein the boom system is provided with a lifting mechanism and is supported on the travelling mechanism; and a tailstock which is used for being removably fixed to the lower part of a lifted device, and is provided with lifting holes. In the process of lifting the lifted device from the ground, the lifting mechanism is in hanging connection with the lifting holes, and the lifting holes are located at the end deviating from the ground. When the tail device is use for lifting a device, the center of gravity of the lifted device can be guaranteed to be always located below a connection line between the lifting point of main lifting equipment and the lifting point or the support point of the tail end row. The tail device has the advantages of good security, small weight borne by the tail end row, low lifting cost, etc.

The invention provides a high-adaptability digging and anchoring integrated machine with a dual-mode anchor drilling system, and belongs to the technical field of underground coal mining equipment. The high-adaptability digging and anchoring integrated machine comprises a frame main body, a cutting system, a conveying system, a dust removing system, a multifunctional temporary supporting system, the dry-wet dual-mode anchor drilling system, an automatic lubricating system, a water-cooling spraying system, a hydraulic system and an electric control system, wherein a traveling mechanism adopts awide crawler design, so that the adaptability of the digging and anchoring integrated machine to a muddy bottom plate is improved; and the dry-wet dual-mode anchor drilling system has two functions of dry dust removal and wet dust removal, and real-time switching selection is carried out according to the geological conditions of the roadway bottom plate without replacing a drill box. By means ofthe high-adaptability digging and anchoring integrated machine, the problems of muddy of the bottom plate, poor stability of a top side wall and low tunneling efficiency in the rapid coal roadway tunneling under the complex geological conditions are solved; the integrated parallel operation of tunneling, anchor protection, transportation, dust removal and the like of a roadway tunneling working surface is realized; and the efficiency and safety of coal mining and transportation are improved.

The invention discloses an amphibious crawler crane, which comprises a loading turntable, a chassis, a floating-assisted device and a running device. The loading turntable comprises a lifting device, a turning device, a power device, a transmission device and a control device; the chassis is used for bearing the loading turntable; the floating-assisted device is connected with the chassis, wherein power of the power device is output to the transmission device and output to actuating mechanisms through the transmission device, namely the running device and the lifting device; and the running device comprises a crawler mechanism and an upright post telescoping mechanism, and the upright post telescoping mechanism is arranged between the chassis and the crawler mechanism so as to adjust the height of the chassis. By adopting the crawler running mechanism, the amphibious crawler crane is easy to complete displacement and steering operation of the whole crane, and has low ground pressure so as to improve the construction efficiency of offshore beach wind fields; in addition, the upright post telescoping mechanism is arranged between the chassis and the crawler mechanism, so the amphibious crawler crane can adjust the height of the chassis according to the depth of seawater so as to avoid shock of ocean waves, and has the advantage of safe and reliable operation.

The invention relates to a track step driller mover, wherein it is formed by translate guider and lifter; the translate guider is formed by two tracks (1), guide block (2), and translate cylinder (3); two tracks (1) via front connecting beam (4), support rod (5), and back connecting beam (6) are fixed together; the guide block (2) can slide on the tracks (1), to connect the base of object (7); two ends of translate cylinder (4) are hinged to the base of object (7) and front connecting beam (4); the lifting cylinder (8) of lifter is fixed on the fixed base (9); the piston via pin (11) is connected to the beam (10); the beam (10) is fixed on the base of object (7). The length of track will not be affected by the base structure of object. And it uses long track and translate cylinder with long strike, to reduce the cost, only with two translate cylinders.

The invention discloses an exchangeable crawler wheel of a loading machine, which adopts a middle support base frame, wherein the base frame is formed by welding left and right web plates, a lateral connection plate, a lower connection plate and an outer shaft sleeve of a drive wheel. An inner shaft sleeve of the drive wheel is connected with the outer shaft sleeve of the drive wheel through a pair of conical roller bearings, and a shifting plate is connected to the two ends of the inner shaft sleeve of the drive shaft through bolts; the lower end of the base frame is connected with a support wheel set, a guide wheel set and a tension wheel set, wherein the support wheel set has a three-axis swing structure, so the impact load of the crawler wheel on the pavement is reduced; the guide wheel set and the tension wheel set are connected with the base fame through a clamping type structure; and the support wheel, the guide wheel and the tension wheel adopt a glue coating structure. A crawler belt adopts a gear wheel structure, and aramid fiber cord threads are used in the crawler in place of interior steel wires, so the weight of the crawler belt is effectively reduced, and a heavy crawler wheel product capable of being exchanged with the current tyre is obtained.

The invention relates to a mining dump truck which is mainly suitable for large surface mining transportation. A running gear of the mining dump truck comprises a truck frame and a plurality of hydraulic suspensions; every two hydraulic suspensions form a shaft line; the running gear at least comprises two shaft lines; the truck frame is an intermediate box beam structure; wing beams are extendedfrom the two sides of the intermediate box beam; each hydraulic suspension comprises a rotary bearing, a rotary frame, a swinging arm, a suspension cylinder, an oscillating shaft and wheels; wherein the upper end of the rotary frame is arranged on the lower plane of each wing beam of the truck frame by the rotary bearing; the upper end of the rotary frame is movably connected with the swinging arm by pins; one end of the suspension cylinder is hinged at the lower part of the rotary frame; the other end of the suspension cylinder is hinged at the middle part of the swinging arm; the front end of the swinging arm is a cylindrical pin shaft; the oscillating shaft is sleeved on the cylindrical pin at the front end of the swinging arm; and the wheels are arranged at the two ends of the oscillating shaft. According to the mining dump truck, the safety of the mining dump truck is improved, the minimal turning radius of a vehicle is also reduced at the same time, the throughput capacity, the maneuverability and the off-road performance of the mining truck are improved, and the cost of use and maintenance is reduced.

A vehicle mounted mechanism with eight wheel torsion bar spring is prepared by hinge-jointing bottom end and top end of front shoch reducer separately to middle end of front suspension bar and vehicle body sidewall, bottom end and top end of back shoch reducer to middle end of back suspension bar and vehicle body sidewall; firm jointing front torsion bar spring to vehicle body sidewall, back suspension bar top end to back torsion bar spring being firm-jointed with vehicle body sidewall.

The invention discloses a triangular crawler traveling device, relates to a crawler traveling device, and provides the triangular crawler traveling device which has the advantages of damping function, capabilities of improving stressing conditions and enhancing the adaptability of a vehicle to a pavement, simple structure, high working reliability, low cost, convenience for use and maintenance, high safety and capability of realizing interchange of wheels and a crawler. The triangular crawler traveling device is provided with a rubber crawler, supporting wheels, a swing shaft, a set square, a left supporting plate, a connecting shaft, a damper, a connecting frame, a driving wheel, a flange shaft, a damp connecting plate, a damper, a front guide wheel, a front guide wheel shaft, a front guide wheel plate, a connecting rod shaft, screws, a right supporting plate, supporting wheel shafts, a crawler frame and nuts.

The invention provides a stirring curing machine. The stirring curing machine comprises an upper vehicle assembly, a lower vehicle assembly connected with the upper vehicle assembly through a rotary support, and a pulp injection system on the upper vehicle assembly. The stirring curing machine is characterized in that one end of a derricking mechanism is connected with the frame of the upper vehicle assembly, and the other end is connected with an upright mast system; an operation device is arranged on the mast system, and can be controlled by a hydraulic system to move on the mast system up and down; a stirring head on the front end of the operation device is driven by the hydraulic system to rotate; and the hydraulic system and an electrical control system are arranged in the upper vehicle assembly. The stirring curing machine provided by the invention has the advantages that the stirring curing machine is specifically used for foundation stabilization, and can reduce stirring dead corners, thereby achieving more uniform stirring. Furthermore, the stirring device in the invention has an enough torque, so that the stirring head can descend into the ground easily when encountering denser soil.

The invention discloses a high-speed and heavy-duty replaceable triangular crawler wheel assembly. The high-speed and heavy-duty replaceable triangular crawler wheel assembly comprises a rubber crawler, a supporting frame, a driving wheel, guiding wheels, tensioning guiding wheels, tensioning devices and load-bearing wheels. The outer ring of the high-speed and heavy-duty replaceable triangular crawler wheel assembly is covered with the rubber crawler. The driving wheel, the guiding wheels, the tensioning guiding wheels, the tensioning devices and the load-bearing wheels are arranged on the supporting frame. The driving wheel is located at the upper portion of the rubber crawler and is connected with a chassis wheel shaft. The guiding wheels and the tensioning guiding wheels are located atthe two ends of the bottom of the rubber crawler, and the load-bearing wheels are arranged on the middle of the rubber crawler. The tensioning devices comprise oil cylinders, energy accumulators andtensioning wheel connecting frames. The oil cylinders are connected with the energy accumulators to form gas-liquid springs. The oil cylinders are connected to oil cylinder seats of the supporting frame, the lower ends of the tensioning wheel connecting frames are connected with the supporting frame to form hinge points, the tensioning guiding wheels are arranged on the middles of the tensioning wheel connecting frames, and the oil cylinders are connected with the upper ends of the tensioning wheel connecting frames. The high-speed and heavy-duty replaceable triangular crawler wheel assembly is simple and reasonable in structure, good in stability, capable of realizing fast replacement and assembling, capable of meeting the requirements of high-speed and heavy-duty, and capable of improving the ability of vehicles to deal with complex geological conditions, such as muddy and soft conditions.

The invention discloses a large-scale nodule collector for multi-metal nodules on a deep sea floor. The large-scale nodule collector comprises a traveling chassis, a rack, a nodule collection box, nodule collection rollers, a roller support, a mechanical tooth type conveying belt and a power driving system. The rack is fixed to the traveling chassis. The nodule collection box is fixed to the rack. The nodule collection rollers are mounted on the rack through the roller support and located at the front end, in the advancing direction, of the whole nodule collector. The mechanical tooth type conveying belt is arranged between the nodule collection rollers and the nodule collection box. Collection teeth are arranged on the nodule collection rollers and used for digging up the multi-metal nodules and then conveying the multi-metal nodules onto the mechanical tooth type conveying belt. The front end of the mechanical tooth type conveying belt conveys the multi-metal nodules into the nodule collection box from bottom to top. The power driving system drives the traveling chassis, the nodule collection rollers and the mechanical tooth type conveying belt to move. According to the large-scale nodule collector for the multi-metal nodules on the deep sea floor, the arc-shaped mechanical tooth type nodule collection rollers are used for combined work, so that the ore collection efficiency and recovery rate are greatly improved; and the whole nodule collector can automatically adapt to the terrain change of the sea floor under the effect of a nodule collection roller terrain clearance adjustment oil cylinder and an adjustment frame.

The invention discloses a synchronous telescopic deformation type track leg composite traveling device which comprises a wheel rim, a travel driving mechanism and a deformation wheel component, wherein a track is coated outside the wheel rim; the deformation wheel component comprises a deformation motor and more than three supporting lead screws; the deformation motor is positioned in the middle of the wheel rim; nut joints are mounted on the supporting lead screws by thread fit; the nut joints are contacted with the wheel rim so as to form linkage support; the supporting lead screws are connected with the output end of the deformation motor through a transmission component and are rotated under drive of the deformation motor; and in the rotating process of the supporting lead screws, the nut joints translate on the supporting lead screws so as to change the shape of the wheel rim. The device disclosed by the invention has the advantages of simple and compact structure, flexible motion manner, high terrain adaptive capacity and the like.

The invention discloses an underwater unmanned remote-control heavy-load work vehicle which comprises a frame (15), a first walking caterpillar band (101), a second walking caterpillar band (102), an electronic cabin (10), a hydraulic valve cabin (4), a hydraulic pump station cabin (6), a right swing arm auxiliary caterpillar band (141) and a right swing arm auxiliary caterpillar band (142). Two ends of a left swing arm auxiliary caterpillar band driving oil cylinder (111) and a right swing arm auxiliary caterpillar band driving oil cylinder (112) are respectively hinged on the frame (15) and a left swing arm auxiliary caterpillar band support frame (182) of the left swing arm auxiliary caterpillar band (142) and a right swing arm auxiliary caterpillar band support frame (183) of the right swing arm auxiliary caterpillar band (141) on corresponding sides. The hydraulic oil cylinders are used to drive the triangular auxiliary caterpillar bands to swing, moving ranges are big, underwater work is easy to carry out, a structure is simple, weight is light, installation and maintenance are easy and convenient, and cost is saved. The oil cylinders are easy to lock, good in rigidity, and capable of carrying out underwater heavy-load work. By adopting a hydraulic oil cylinder swing arm driving system, the trafficability and the obstacle climbing ability of the underwater unmanned remote-control heavy-load work vehicle under complex environments are greatly improved, and the adaptability of the underwater unmanned remote-control heavy-load work vehicle in the seabed underwater complex environments is greatly enhanced.

The invention discloses a river network mire crawler-type carrier vehicle.The river network mire crawler-type carrier vehicle comprises a walking underpan, a box is fixed to the walking underpan, and a drive system is installed in the box.Bogie wheels of the walking underpan are installed through torsion rod springs in an independent suspension mode, and a bi-induction-tooth type is adopted in a crawler.A hydraulic winch is arranged in the box, an angle block is installed in the middle of the upper end of the front side of the box, and tipping buckets are installed at the upper ends of the left side and right side of the box.A supporting connecting frame is installed on the box, an inserting groove is formed in the upper surface of the supporting connecting frame, vertical connecting plates are hinged to the left end and right end of the back side of the supporting connecting frame, and a cargo loading device is installed on the supporting connecting frame.The river network mire crawler-type carrier vehicle is excellent in damping performance, the driving speed is obviously increased, the walking noise is low, structures can be flexibly replaced through the adopted cargo carrying device, the requirements for carrying sand bulk cargo, short tower materials and long rod piece tower materials are met, and the construction requirements of the carrier vehicle on a river network field are met.

The invention relates to a novel lower chamber device. The lower part of the novel lower chamber device is provided with double crawler travel mechanisms. A frame is arranged between the double crawler travel mechanisms. The upper part of the frame is provided with a rotating platform. The rotating platform is provided with a cab. The rotating platform at the rear of the cab is assembly connected with the lower end of a telescopic suspension arm. The rotating platform is provided with a lifting mechanism. The lifting mechanism is matched with the telescopic suspension arm. The rotating platform is also provided with a telescopic counterweight mechanism. When the novel lower chamber device is used for operating under the cabin, two modes of complete counterweight extension and complete counterweight shrinkage can be realized, wherein the counterweight extends completely to improve the lifting performance; and the counterweight shrinks completely to improve conformability for the space.

The invention discloses an underwater closed space local dry method welding robot. The device comprises a walking mechanism, a mechanical operation arm mechanism, an underwater closed space welding device and a hydraulic system, wherein the walking mechanism comprises a robot shell and a walking triangular crawler wheel; the walking triangular crawler wheel comprises a crawler belt, a triangular bracket, a driving wheel system, a tensioning wheel system, a connecting belt and an anti-rollover wheel system; the mechanical arm mechanism comprises mechanical arm main arms and a mechanical arm up-down lifting operation device; and the underwater closed welding space device comprises an upper shell part, a lower shell part, a sealing cover and an internal welding executing mechanism. Accordingto the underwater closed space local dry method welding robot, the triangular crawler type underwater cable-free movement is adopted, the full-position automatic welding of the pipeline is realized bycarrying a structural form of an operation arm connected to a welding operation cabin, a cylindrical box body local dry method welding mode and a movable welding gun head are matched, under the condition that the pipeline is relatively fixed, all the water in the whole operation area is emptied by means of injection air, so that the welding equipment is driven along a welding seam to move aroundthe wall of the pipe, and therefore the automatic welding can be realized.

The invention relates to a novel hydraulic crawler crane, which is the improvement of wheel crane through replacing wheel type chassis by crawler chassis. The invention comprises a crawler chassis (1), a turntable (3) arranged on the crawler chassis (1) through a turning gear (5) and a turning support (2), a lifting mechanism (4), a hydraulic device (9), a power device (10), a balance weight assembly (11) and a driving cab (12) which are arranged on the turntable (3), a telescopic boom (6) hinged with the turntable (3), a sling dog (8) arranged at the other end of the telescopic boom (6), a telescopic oil cylinder arranged inside the telescopic boom (6), a derricking oil cylinder (7) hinged with the turntable (3) and the telescopic boom (6), a hydraulic device (9) and a power device (10) ,etc. The invention is characterized in flexible maneuvering, large working scope, a compact structure, safe and reliable working, convenient operation, aesthetic appearance, ideal comfortableness, being capable of working in wetland type region, low earthing specific pressure and needing no support of outrigger etc.

The invention discloses a dynamic rapid water-absorption and forced-filtration device for a rice field and belongs to the field of rice field management equipment. The device provided by the invention is mainly composed of a water storage tank, a water pump, an inlet pipe, a water collection tank and multistage filtrators, etc. The inlet pipe is formed by connecting multiple filters and pipelines. A front end of a base plate of the water collection tank inclines upward so as to refrain from touching the ground and reduce suction volume of soil particles. A front end of the water collection tank is provided with a row separator for separating rice at both ends and simultaneously pushing aside impurities on water surface of the rice field. All the filtrators and filters inside the inlet pipe are detachable. The base plate of the water collection tank can be opened so as to conveniently clean impurities filtered by each stage of filtrator. The device can be used in operations such as fertilization, drug spraying in the rice field. By collecting water on the spot and filtering the water, clean water is obtained and then utilized. Thus, volume of a water tank of rice filed management equipment is reduced greatly so as to further decrease weight of the operation machine, reduce ground pressure of drug spraying and fertilization machines for the rice field, minimize damage to a mud bottom layer and a plough layer of the rice field and prevent car trapping. The device provided by the invention can be applied in management of a rice field, such as fertilization, drug spraying and the like.

The invention provides a track maize harvesting machine. The machine comprises an engine, a working device, a chassis assembly, an operation chamber and a hydraulic system; the working device comprises cutting platform systems, a cluster bin, and a fruit cluster conveyor arranged between the cutting platform systems and the cluster bin; the cutting system comprises a spike cutting device; the chassis assembly comprises a transmission device, a turning braking device and a track travelling system; the track travelling system comprises a frame and a travelling device; a cutting platform bracket for mounting the cutting platform systems is arranged at the front part of the frame; a straightening mechanism is arranged at the lower end of the cutting platform bracket; the working device and the operation chamber are fixed to the left and right on a connecting plate at the front part of the frame; the cluster bin is arranged at the tail part of the frame; the hydraulic system comprises a hydraulic valve, a hydraulic oil tank, a turning oil cylinder, a cutting platform oil cylinder, a hydraulic pump, a radiator and a travelling motor. The machine is under full-hydraulic transmission and high in working adaptability; a plurality of rows of cutting platform systems can be combined in different forms according to the actual working conditions, so that the working efficiency is high.

The invention discloses a tracked carrier special for an intertidal belt. The carrier comprises a carrier body, a double-track device, a cab and a power system, wherein the carrier body is a bearing mechanism; and the double-track device is a traveling mechanism. The carrier is characterized in that: the bottom face of the carrier body is respectively connected with a gantry hinge-free connecting beam device and a Y-shaped hinge connecting beam device through pin shafts; two supporting beams of the gantry hinge-free connecting beam device are welded with a box beam I; the Y-shaped hinge connecting beam device is moveably hinged with box beam II; both the box beam I and the box beam II are sealed boxes and are respectively connected with crawler mechanisms on two sides of the box beam I and the box beam II through the pin shaft I and the pin shaft II; a three-fulcrum gantry based on the ground is formed; the power system is arranged on the middle part of the carrier body; the cab is arranged on the end face of the carrier body close to the Y-shaped hinge connecting beam device; and the cab can realize ascending and descending through slide ways, a slide way bracket, an oil cylinder and the pin shafts.

The invention provides a crawler-type sleigh composite walking polar region robot. A position-changing crawler walking mechanism comprises four independent walking crawlers and a crawler rocker arm support. The walking crawler comprises a crawler belt body, driving wheels, supporting wheels and guide wheels. The crawler belt surrounds the driving wheels, the supporting wheels and the guide wheels,the driving wheel rotates in the mode that a hollow shaft is connected with a speed reducer shaft, the crawler rocker arm support rotates in the mode that a solid shaft located in the hollow shaft rotates, and different crawler advancing movement modes are achieved by controlling locking of a front guide wheel shaft and a rocker arm shaft. A sail sleigh mechanism comprises a sail at the top of arobot body and a sleigh at the bottom and capable of ascending and descending freely. The sail at the top can ascend and descend through a gear motor, the sleigh at the bottom can pop up from the bottom of the vehicle body, the angle of the sleigh is adjusted, and the pitching degree of the robot is further adjusted; the vehicle body can still be kept horizontal when the robot runs on an inclinedroad surface, and therefore it is guaranteed that instruments in the vehicle body can normally run.

The invention discloses a water collecting device for a dead furrow of a paddy field pesticide spraying machine, and belongs to the field of paddy field management machinery. The water collecting device mainly comprises a water storing tank, a filter, a water pump, a water absorbing pipe, multiple water collecting grooves and multiple water collecting groove positioners. The section of each water collecting groove is trapezoid. The front end of a base board of each water collecting groove is inclined upward, touching with the furrow bottom of the paddy field dead furrow is avoided, sediment mixing is lowered, and meanwhile water fluid is convenient to enter. The water collecting groove positioiners are arranged on the two sides of each water collecting groove, and is symmetric about the central line of the corresponding water collecting groove. Two dampers of the water collecting groove positioners slide frontward by attaching the two side furrow walls of the paddy field dead furrow to carry out limiting on the positions of the water collecting grooves in the dead furrow, so that the water collecting grooves are always on the center of the paddy field dead furrow. By carrying out water collecting and filtering in the paddy field dead furrow, clean water can be obtained. According to the water collecting device, the unsolved problem that the paddy field pesticide spraying machine carries out water collecting in the paddy field to reduce the volume of a pesticide tank is solved, and the water collecting device can be applied to paddy field pesticide spraying machinery.

The invention relates to the technical field of coal mine engineering machinery, in particular to a heading machine. The heading machine comprises a heading machine body, wherein at least two groups of crawler belt traveling mechanisms are installed on the heading machine body. By arranging a plurality of groups of crawler belt traveling mechanisms, the ground pressure of the whole heading machine can be reduced, and a plurality of crawler belt traveling mechanisms are arranged at the front part and the rear part of the heading machine body, so that the center of gravity of the whole machine is moved backwards, so as to prevent the machine body from tilting backwards when traveling downhill on a steep slope, and the plurality of traveling mechanisms can improve the adhesive force between the whole machine and floor boards to solve the problem of slipping and improve the drive capability of the whole machine; and by arranging a plurality of crawler belt traveling mechanisms, the problem that the whole machine fails to move due to the fault of one group of crawler belt traveling mechanisms can be prevented.

The invention discloses a portable cross-country hand fork lifter, which comprises a frame mechanism and a lifting mechanism. Inflatable wide-base guiding wheels and universal wheels are respectively arranged at the front and the rear of the frame mechanism, the lifting mechanism realizes lifting of a carriage by the aid of a manual pump, and the frame mechanism and the lifting mechanism can be fast detached by a locking mechanism. The portable cross-country hand fork lifter has the advantages that the ground clearance is large, the ground pressure is low, the lifting mechanism and the frame mechanism can be fast mounted and detached, so that manual carrying is convenient, and the like. In addition, the portable cross-country hand fork lifter is particularly applicable to loading, unloading and carrying operations of a small quantity of vehicular articles in field regions, and can replace a fork lift truck.

The invention relates to a walking mechanism of a robot and a walking method thereof. A double-feet air cushion boot type walking robot is characterized in that. swaying thighs (3) are arranged on the two sides of a hip part board (9), swaying shanks (5) are connected to the lower ends of the swaying thighs (3), the lower ends of the swaying shanks (5) are connected with air cushion boots (6) by a ball hinged structure, controllable bolts (4) are arranged between the swaying thighs (3) and the swaying shanks (5), the lower parts of the swaying shanks (5) extend out of supporting horizontal rods (11), at least one vertical spring is arranged between each supporting horizontal rod (11) and a top layer hard board (17), the structure of each air cushion boot (6) is that a soft apron (15) is arranged on the lower part of the corresponding top layer hard board (17), an air-blowing draught fan (14) driven by an air-blowing draught fan motor (13) is arranged above each top layer hard board (17), and the walking method of the robot provides and limits the operation characteristic in an operation segmenting mode. The robot is simple in structure, small in two-leg freedom degree and low in control unit requirement, two feet bear the load during walking, the walking stability is good, the ground specific pressure has better inclusiveness for complicated ground, and the energy using efficiency is high.

The invention discloses a traction transportation device and mountain land equipment and relates to the technical field of engineering machinery. By the adoption of the traction transportation device and the mountain land equipment, the technical problem that only one function is realized in the prior art is solved. The traction transportation device comprises a power mechanism, a vehicle frame, a traveling mechanism, a traction saddle and a detachable transportation platform, wherein the traveling mechanism is connected with the vehicle frame, the power mechanism is in driving connection with the traveling mechanism and can drive the traveling mechanism to drive the vehicle frame to move, the traction saddle is arranged on the vehicle frame, and the transportation platform is detachably connected with the vehicle frame. The mountain land equipment comprises the traction transportation device. The traction transportation device is used for making the mountain land equipment have more functions and improving the transportation capacity of the mountain land equipment.

The invention discloses a hydraulic dynamic and static cooperation pile pressing machine, which is the pile pressing machine that is formed by combining a hydraulic ramming machine and a hydraulic static pressing machine to cooperate. A power source and a wheel hammer coaxially rotate, when the wheel hammer rams downwards, the wheel hammer is an eccentric wheel with larger eccentricity, when the wheel hammer rotates upwards, the wheel hammer is automatically changed into a concentric wheel; and in order to prevent the impact power which is generated during the rotation process of the wheel hammer from damaging and influencing a pile pressing oil cylinder, two portals for installing the pile pressing oil cylinder are connected into a whole, the connection with a main case is changed into an elastic connection from the rigid welding in the static pressing machine, so two different inertial systems are formed by the main case and the main case frame. Consequently, the friction force of the peripheral soil of the pile to a pile body is greatly reduced under the vertical vibration of the pile body, most of the dynamic and static forces are exerted on a pile head, the penetrating capability to a rock body is increased, and the penetrating capability to the existing hydraulic hammer is exceeded.

The invention discloses a tomato picking containing vehicle which aims at being simple in structure, convenient to manufacture and use and low in price. The tomato picking containing vehicle is characterized in that a frame-shaped bottom frame is included, rolling shafts arranged in rows in the front and back direction are installed at the bottom of the bottom frame to serve as rolling wheels, the length of the rolling shafts is smaller than the width of a furrow, vertical stand columns are fixed at the front end and the rear end of the bottom frame, connecting rods are fixed between the two stand columns, inclined sliding grooves with high upper portions and low lower portions are fixed in the connecting rods, material barrels for containing picked tomatoes are arranged at the parts exactly facing lower openings of the sliding grooves, and the picked tomatoes roll into the material barrels through the sliding grooves. In the use process, due to the fact that the containing vehicle is large in loading capacity and can generally contain hundreds of jin of tomatoes, farmers do not need to carry out picking in a load bearing mode and do not need to ineffectively walk back and forth either, the picking efficiency is greatly improved, and the labor intensity of the farmers is greatly lowered. The containing vehicle can be also used when other vegetables or fruits or the like are harvested, and good application and popularization value is achieved.

The invention discloses a wheel-caterpillar alternative type all-terrain vehicle and belongs to the technical field of all-terrain vehicles. The provided wheel-caterpillar alternative type all-terrainvehicle with a high movement speed and a great obstacle crossing capability aims at overcoming defects of all-terrain vehicles of wheel structures and defects of all-terrain vehicles of caterpillar structures. On the basis of the all-terrain vehicles of the caterpillar structures, four lifting wheels are added, lifting movement mechanisms are designed by using connecting rods and driven by stepping motors, ascending and descending of the four lifting wheels can be achieved, and wheel-caterpillar alternative or cooperative work is achieved. When the all-terrain vehicle passes through muddy land and a desert, four triangular caterpillars are driven separately; when the all-terrain vehicle crosses a trench and climbs stairs and steps, the four triangular caterpillars and two rear lifting wheels are driven; the four lifting wheels are driven to run on a flat road separately. The all-terrain vehicle is more suitable for complex and varied terrains and has high practicality.