50results about How to "Reduce walking resistance" patented technology

Provided are a friction sir welding device that is light in weight and can travel by a small force, a suction pad used for the friction sir welding device, and a friction stir welding system. The suction pad (46) includes a plate-like facing section (51) facing an object to which the suction pad sticks; an annular pad section (52) projecting from one surface in the thickness direction of the facing section (51) at its end near the object and making a round on the surface of the facing section (51); a gliding body (53) provided on the surface of the pad section (52) at a portion near the object; and one or more deformation prevention projections (56) projecting from the one surface in the thickness direction of the facing section (51). The gliding body (53) is made of a material having a friction coefficient against the object which is smaller than the friction coefficient of the pad section (52) against the object.

The invention discloses a tube segment transport trolley simultaneously adaptive to a whole-ring tube segment transportation function and a small-curve tunneling function. The tube segment transport trolley comprises a connecting base and a trolley body, wherein the connecting base is connected with the trolley body through a lever pulley block and a guide chain; the trolley body further comprises at least two racks which are connected; rack supporting wheels are arranged on the head and tail lower parts of each rack, a slide bracket and a lifting bracket are arranged on the upper part of each rack; the lifting brackets are arranged in series, and the sliding brackets are connected in series; the sliding bracket at the foremost end extends out of the rack at the foremost end, and a supporting wheel is arranged on the lower part of the sliding bracket at the foremost end. The length of the tube segment transport trolley disclosed by the invention can be more than 20 meters according to the tube segment diameter, the tube segment segmentation and the whole equipment arrangement; the transportation efficiency is not affected when the tube segment transport trolley is used for synchronously transporting the whole-ring tube segments at a relatively long distance, and the trolley travelling function is not affected on the condition of meeting small-curve tunneling turning.

The invention relates to a structurally improved crop straw harvesting baler, which comprises a frame, a header, a conveying chute, a longitudinal feed mechanism, a forming chamber, a baling and knotting device, a control table and a power system. The power system is disposed at the tail of the overall baler, other components are all disposed on a frame chassis, and a reel and a cutter are installed on the header. The structurally improved crop straw harvesting baler is characterized in that the chassis is a self-propelled crawler chassis, and self-propelling tracks are installed on the chassis. Using the chassis overcomes the shortages of a tractive baler, and integral operation is achieved. By means of the self-propelling tracks, land contact area is large, land contact pressure is low, soil settlement is avoided, performances are stable, reliability is high, travelling resistance is small, climbing performance is high, disassembly and assembly is easy, and cross-field movement is convenient. The structurally improved crop straw harvesting baler has the advantages that appearance is compact and small, conveying capacity is high, slipping is less apt to occur, adaptability to landforms is high, the structurally improved crop straw harvesting baler can be used for harvesting various types of straws, and the like. The structurally improved crop straw harvesting baler is applicable to landforms of most areas of China and harvesting of crop straws.

The invention relates to a cleaning device for a direct air-cooling condenser. The cleaning device comprises a horizontal water pipe reel assembly and a vertical water pipe reel assembly, wherein a rubber pipe connected with a high-pressure pump is connected with a water inlet end of an electric reel shaft of the horizontal water pipe reel assembly; one end of the rubber pipe coiled on an electric reel cylinder is inserted into a radial water outlet of the electric reel shaft; a lead-out part passes through a swing type water pipe guiding device and a through type water pipe guiding device, and one end of the lead-out part is connected with the water inlet end of a passive reel shaft of the vertical water pipe reel assembly; and one end of a rubber pipe coiled on a passive reel cylinder is inserted into a radial water outlet of the passive reel shaft, and one end of a lead-out part of the rubber pipe is connected with a water inlet pipe on a horizontal pipe in an nozzle frame. The cleaning device can improve the stability and uniformity of cleaning, improve the cleaning effect obviously and save water sources, so the cleaning device is particularly important for areas where water resources are deficient; and operators can remotely control cleaning, so the operating environment of the operators is improved and the labor strength of the operators is reduced.

The invention belongs to the technical field of road maintenance and construction and particularly relates to a travelling mechanism. The travelling mechanism comprises a section of movable track anda sliding trolley which is in sliding fit with the movable track along the length of the movable track; a hanging mechanism is connected with the sliding trolley through a lifting mechanism; and a sliding trolley driving mechanism used for driving the sliding trolley to slide on the movable track is further disposed between the movable track and the sliding trolley and comprises a movable block, apulling rope, a first winding reel and a second winding reel, wherein the first winding reel and the winding reel are coaxially arranged. According to the travelling mechanism, the movable track is introduced on the basis of a traditional traveling type scaling ladder, the travelling resistance of the scaling ladder is greatly reduced, meanwhile the movable block mechanism is adopted to drive thescaling ladder to travel, less effort is needed during operation, the operation difficulty is lowered, and the maintaining efficiency is improved.

The invention discloses a chassis device for a non-contact wheel-type wall-climbing robot and relates to the field of wall-climbing robots. A differential-steering-type driving structure is adopted for the device, two driving wheels and driven wheels are distributed at opposite angles, the driving force of the whole device is distributed through a more balanced mode, and the stability and reliability during wall-climbing walking are improved; by adopting a non-contact-type attraction unit, all permanent magnets provide attraction force at the same time, and the problem is solved that the utilization rate of the magnets in the traditional scheme of caterpillar band attraction and magnetic wheel attraction is insufficient; the advantages of a caterpillar-band-type chassis and a magnetic-wheel-type chassis are combined, the contradiction is effectively overcome that the attraction capacity and walking resistance of the chassis of an existing wall-climbing robot are mutually exclusive, thetotal weight is effectively reduced, the walking resistance is reduced, and the effect of saving energy and improving efficiency is achieved.

The invention provides ridge-platform deep-scarification stubble-cleaning ridge-forming land preparation machine and belongs to agricultural machinery. The machine comprises a machine frame assembly, a variable-speed transmission case, a fertilizer box, a three-point suspension frame assembly, ground wheels, a stubble-cleaning cutter shaft assembly and a ridge-platform forming soil collector, wherein the variable-speed transmission case, the fertilizer box, the three-point suspension frame assembly, the ground wheels, the stubble-cleaning cutter shaft assembly and the ridge-platform forming soil collector are assembled on the machine frame assembly, the a ridge-platform deep-scarification shovel assembly is assembled at the front end of the machine frame assembly and located at the front-side position of the stubble-cleaning cutter shaft assembly, the longitudinal central line of the ridge-platform deep-scarification shovel assembly coincides with the longitudinal central line of the ridge platform corresponding to the ridge-platform deep-scarification shovel assembly, and the outer diameter size of the stubble-cleaning cutter shaft assembly is 560 mm. The traditional technical scheme that stubble cleaning is performed before deep scarification of furrows and the agricultural technological process are changed fundamentally, and the ridge-platform deep-scarification stubble-cleaning ridge-forming land preparation machine has the advantages of being novel in structure, reasonable, simple, good in land preparation operation quality, high in efficiency, few in fault, low in power consumption and remarkable in technical effect.