655results about How to "Stressful" patented technology

A floating type wave power generation system is characterized in that the system consists of eight sets of lever-type floating bodies and a hydraulic energy accumulation converter with the hydraulic pump function. On a floating workbench 7, eight sets of levers 2 and a floating body 1 are connected through supporting hinge bearers 10 and 11; in this way, the highly undulating displacement caused by waves can be converted to relatively lesser displacement of a piston rod 4, and the minor force that the floating body bears can be converted through the lever to the major force on the piston rod. The piston rod drives a hydraulic tank 3 to switch and transmit the hydraulic energy through a connecting oil pipe5, a high-pressure oil pipe6, a hydraulic oil tank and four no-return valves of each set to a hydraulic motor in a hydraulic power generation control chamber 9; in this way the generator is driven to work. The present system can absorb, convert and accumulate the intermittent unstable wave energy in a highly effective way and can buffer the destructive effect of waves. The floating platform can be suitable to different marine space by adjusting the length of an anchor chain 8. And in various sea conditions, kinetic energy and potential energy possessed by waves in the sea surface can be converted and accumulated as hydraulic mechanical energy by utilization of the wave drop; thus the generator is driven to unremittingly provide electric power.

The invention discloses a highway protective guardrail for improving the safety of speed limitation. The highway protective guardrail includes a base, a support column is welded on the base, the support column is fixedly sleeved with a load-bearing cylinder, the outer wall of the load-bearing cylinder is provided with a limit slide groove, the load-bearing cylinder is fixedly sleeved with a limitguard plate, and the limit guard plate is provided with a limit slide cavity. Multiple buffer mechanisms are arranged on the protection guardrail, and different buffer measures are used for limiting the speed of vehicles under different stress conditions so as to reduce the strong vibration caused by direct collision with the vehicles and to improve the stability of the vehicles at the time of speed limitation. An arc outer plate is driven to rotate through vehicle extrusion, so that the vehicles follow the arc outer plate for direction deviation, and thus impact strength is scattered; nitrogen is rapidly formed through vehicle knocking, an safety air bag is used for buffering protection of the vehicles and the protective guardrail, the stability of the vehicles at the time of speed limitation is easily improved, the safety of personnel is ensured, and meanwhile the damage degree to the guardrail is reduced.

A rotary vane vertical wind driven generator outputs power by a vertical and horizontally rotating rotor, the rotor consists of a transmission shaft and a multiplate rotary vane annular array, the rotary vanes are divided into two kinds, one is unilateral rotating rotary vanes and the other is central shaft rotating rotary vanes. The wind energy generator has four technical proposals: the first is that the rotor consists of the unilateral rotating rotary vanes, wind area of the vanes is changed by a bumper guard, an expansion plate and a gear cluster, which causes the rotor to be unilaterally under stress, thus generating rotary motion; the second is that the rotor consists of the central shaft rotating rotary vanes, the rotor is unilaterally under stress by a wind shield, thus generating the rotary motion; the third is that the rotor consists of the central shaft rotary vanes, a shield plate is employed to protect the external cambered surface of a windward rotary vane from acting force, internal face of another shield plate inducts the wind to act on the internal cambered surface of the windward rotary vane so as to cause the rotor to be unilaterally under stress, thus generating the rotary motion; and the fourth is that the first and the second technical proposals are enlarged to perform multilayer and multiplate array mounting on the vanes.

The present invention discloses one kind of multiple anchor point anti-slide pile suitable for multiple slide plane condition and deep slide plane condition and its construction process. The construction process includes the following steps: excavating pile well and setting pile stem protecting wall in sections; boring hole in proper depth, installing anchor cable, grouting and tensing the anchor cable temporarily onto the protecting wall; further downward excavating and repeating the forgoing said steps until installing the lowest anchor cable; further excavating the pile well to designed depth; assembling reinforcing cage inside the pile well; tensing anchor cables and locking; and final pouring pile concrete to complete the pile construction.

The invention belongs to the technical field of glass, and particularly relates to a glass production method. The method comprises the step 1 to the step 6, wherein in the step 2, a used grinding device comprises a tube body, a grinding module and a filtering module; the grinding module is arranged at the bottom of the tube body; the filtering module is arranged on the top of the tube body; the grinding module comprises a No.1 grinding post, a No.2 grinding post, a fan blade and a No.2 installing cabin; semicircular grinding blocks are respectively arranged on the surfaces of the No.1 grindingpost and the No.2 grinding post; a cutting unit arranged in the semicircular grinding block is used for cutting quartz raw materials; the grinding efficiency is improved; the filtering module comprises a funnel, a ball milling disc, a cleaning unit and a No.1 installing cabin; the funnel and the ball milling disc are mutually matched; the ground quartz is selected; the quartz quality is improved.The used device mainly performs collision and cutting grinding on the quartz raw materials; the mixing time of the quartz with sodium carbonate, boracic acid and the like is shortened, so that the glass production efficiency is improved.

The invention discloses a continuous rigid frame bridge based on a steel truss-concrete slab composite beam. The continuous rigid frame bridge comprises a bridge substructure and the steel truss-concrete slab composite beam supported by the bridge substructure. The steel truss-concrete slab composite beam comprises a steel truss and a concrete bridge deck which is laid over the steel truss. The steel truss comprises one or more steel truss units; each steel truss unit is an inverted-triangle truss girder, wherein the inverted-triangle truss girder is composed of two upper chords, a lower chord, a left line of diagonal web members and a right line of diagonal web members, each upper chord comprises a first horizontal steel plate and a plurality of first vertical perforated steel plates evenly laid on the first horizontal steel plate, an upper chord transverse connecting system connected between the two upper chords comprises a plurality of upper chord transverse connecting pieces, and each upper chord transverse connecting piece comprises a second horizontal steel plate and a plurality of second vertical perforated steel plates evenly laid on the second horizontal steel plate. The continuous rigid frame bridge is simple in structure, reasonable in design, convenient to construct, good in stress performance, good in using effect and capable of effectively solving various problems existing in an existing continuous rigid frame bridge.

The present invention provides a fast steering mirror system connected with a universal flexible hinge in a high-precision aim-stabilization system. A set of voice coil motors are taken as drivers to drive the high-frequency motion of a steering mirror; a set of optical grating micrometers are taken as angular position sensors to perform real-time feedback of angular position signals; and a universal flexible hinge bears the scheme of two-degree-of-freedom motion of the steering mirror. The motion features of the steering mirror are employed to design the material composition and structure form of the voice coil motors and the universal flexible hinge so as to solve the compensation problem of the optical system two-level stable loop residual errors on the premise of using the least drivers and the simplest bearing mechanism.

This invention relates to a kind of three strides serial rigid steel arched bridge. It includes the medium bear main arch rib, the main arch deck which connects with the main arch rib through suspender and the medium bear side arch rib which is on both sides of main arch rib, the side arch deck which connects with the side arch rib and fixes it through the suspender. The main arch rib connects with the side arch rib's inner side arch springing through the triangular rigid structure on main frusta. The side arch rib's outer side arch springing connects with side frusta through support abutment. On both sides of side arch deck there is flexible tie bar, the side arch rib's outer side arch springing and the side frusta's connecting support abutment are portrait glide support abutments. The main arch deck is steel structure or steel mixture combination structure. The side arch deck is the concrete structure. This invention improves the whole bridge's rigidness by optimizing the structure. It makes the main frusta's imbalance flexural torque and level force become small. It lowers the base design difficulty and saves the bridge's steel usage. It also saves the investing cost. Its three strides serial rigid steel arch becomes more beautiful and harmony on appearance.

The invention relates to a multistage tunnel type paramagnetic separation oxygen enrichment device, comprising a plurality of strip permanent magnet layering and grading piles with the sections of isosceles triangle or isosceles trapezoid. The strip permanent magnet layering and grading piles are supported and fixed by supporting frames; multistage triangular tunnel sets A with more stages are assembled according to a requirement; the other set of multistage triangular tunnel sets B with a same array and a same quantity are assembled in the same way; and a crocodile mouth type symmetrical multistage tunnel paramagnetic separation oxygen enrichment device is formed by symmetrically arranging two sets of same triangular tunnel sets A and B with oppositely placed triangular tip angles or oppositely placed trapezoid short sides. The invention has the advantages of simple structure, convenient use, adjustable oxygen generation quantity and oxygen generation concentration, and lower cost and running cost.

The invention discloses a segmental assembling box girder construction technology. A constructed box girder is composed of multiple porous girders. Each porous girder is formed by assembling multiple box girder segments from back to front. When the constructed box girder is constructed, the process includes the following steps that firstly, the box girder segments are prefabricated, wherein all the box girder segments used for forming the constructed box girder are prefabricated in a prefabrication site in a concentrated manner; secondly, the box girder segments are transported, wherein all the box girder segments are transported to the erection position of the constructed box girder through a girder transport vehicle; thirdly, the box girder is erected, wherein the constructed box girder is erected and constructed through a descending bridge girder erection machine, and the descending bridge girder erection machine comprises a bottom horizontal supporting system, a main girder system, a longitudinal moving system, a cantilever crane, an assembling frame and an assembling vehicle; and fourthly, a system is converted, wherein the system is converted after the erection construction process is finished. By the adoption of the segmental assembling box girder construction technology, the technological step is simple, design is reasonable, construction is easy and convenient, a construction process is easy to control, a use effect is good, the segmental assembling box girder assembling process can be simply, conveniently and rapidly finished, and the construction quality is easy to guarantee.

The invention provides a hollow high-bearing high-maneuverability spacecraft configuration. The hollow high-bearing high-maneuverability spacecraft configuration includes a payload cabin, a propulsioncabin and an instrument cabin. The payload cabin is located at the central axis of a spacecraft. The payload cabin passes through the central axes of the propulsion cabin and the instrument cabin. The interior of the payload cabin is a cylindrical space which is open at the front and back, and the payload cabin runs through the whole of the spacecraft, and is used for carrying a large space loadwhich needs to be arranged in the middle of the spacecraft. The propulsion cabin is located at the exterior of the payload cabin. The instrument cabin is positioned above the propulsion cabin. According to the hollow high-bearing high-maneuverability spacecraft configuration, the large space is reserved in the central axis of the spacecraft and used for installing a large-size and high-mass load system with a slender shape, the overall height and centroid height of the spacecraft can be effectively reduced, centroid lateral deviation of the spacecraft is reduced, and a better mechanical environment is provided for both the load and the spacecraft.

The invention discloses feed processing equipment. The feed processing equipment comprises a grinding tank and a driving motor, wherein a rotating shaft is rotatably connected to the center of the topof the grinding tank; the top end of the rotating shaft is fixedly connected with an output shaft of the driving motor through a coupling; a square connecting rod is fixed to the bottom end of the rotating shaft and located in the center of the interior of the rotating shaft; deflector rods are fixed to the surface of the square connecting rod; a grinding device is arranged at the bottom end of the square connecting rod, the grinding device is in sliding connection with the square connecting rod; and a sieve plate is fixed to the position, close to the bottom of the grinding device, in the grinding tank. The invention relates to the technical field of feed processing. According to the feed processing equipment, the effects of uniform grinding and adhesion prevention are achieved; elasticpressing can be carried out, and the grinding space is automatically and moderately increased, so that large and small granular materials uniformly leak, and grinding is rapid and uniform; and meanwhile, sticky materials on the inner wall can be automatically scraped off, so that the working efficiency and the use performance are improved.

The invention relates to a full-automatic multifunctional bottle opener. A multifunctional bottle opening cutter is connected with a cutter frame disc through a thread; various types of cutters in the multifunctional bottle opening cutter are placed on a disc of the cutter frame disc; the disc is mounted in the upper part of a machine shell through a screw rod, and is movably connected with the screw rod; the cutter frame disc moves along axis when rotating to drive the multifunctional bottle opening cutter to position different bottle caps and to switch to the corresponding cutters; and a 360-degree rotating chassis is mounted at the lower part of the machine shell through a base extension shaft, and moves along axis when rotating, and is driven to position and clamp bottles. The full-automatic multifunctional bottle opener is small in size and light in mass, is more convenient for both home and entertainment venues, is simple in operation, automatically finishes the bottle opening task only by users pressing down a button, is safe, needs no manual opening of the bottles, in particular difficult-opened beer bottles, prevents dangers, is convenient and labor-saved, and is convenient for life. In addition, no similar products are on the market; and the full-automatic multifunctional bottle opener adapts to the demands of people.

The invention discloses a military outdoor conference table. The military outdoor conference table comprises a fixed tabletop, a cabinet body, a cabinet door and foldable table legs. The cabinet body comprises two foldable tabletops, a table leg plate and a bottom plate parallel to the fixed tabletop. The two ends of the table leg plate are perpendicularly fixed to the fixed tabletop and the bottom plate respectively. Each foldable tabletop is movably connected with the fixed tabletop through rotating shaft hinges. The rotating shaft hinges are 180-degree locating spring hinges. Each foldable tabletop is connected with the bottom plate through a door mortise lock. The foldable table legs are arranged in the external rim area of the foldable tabletops through folding locking devices. Each folding locking device is movably connected with one foldable tabletop and one foldable table leg through two suspension arms by means of nail columns. The suspension arms are provided with four clamping grooves matched with the nail columns. The cabinet door is movably connected with the cabinet body through hinges. A handle is arranged on the cabinet door. According to the military outdoor conference table, a cabinet and the table can be switched freely, and the military outdoor conference table is light in weight, convenient to carry, simple in structure and convenient to repair.

A pontoon and water flow power generation combined power station comprises a pontoon. A belt hydraulic engine type water flow power generation device, a solar power generation device and / or wind driven power generation device are arranged on the pontoon, and the belt hydraulic engine type water flow power generation device is provided with an automatic working water level regulating unit, a super-flood preventing unit and a float cleaning unit. A belt hydraulic power generator, a magnetic suspension wind driven power generator and a solar power generator are assorted mutually and are integrated with the shore supply to realize interaction and compensation, and specifically, power generated from flood and / or wind and solar energy in peak periods is fed back to the shore supply, and the shore supply resupplies power for the pontoon when in off-peak periods of flood and / wind and solar energy, so that uninterrupted power supply is formed, and the multipurpose pontoon with new clean energy self-generating devices is assembled. Besides, automatic control and dispatching of various power supplies can be realized, and accordingly the pontoon and water flow power generation combined power station has the advantages of operational simplicity, safety and reliability, high efficiency, adaptability to non-professional management, and can be used as a composite marine facility with double functions of the pontoon and the power station or can be used as a special shore power station utilizing integral energy.

The invention discloses a pipeline internal inspection robot. The pipeline internal inspection robot comprises a vehicle body with wheels and a lifting frame arranged on the vehicle body. The lifting frame comprises a base connected with the vehicle body, the base is rotationally connected with a connecting rod, and a camera assembly is arranged at the end, opposite to the base, of the connecting rod. The pipeline internal inspection robot is characterized in that the base can slide forwards and backwards relative to the vehicle body; a driving mechanism capable of driving sliding is arranged between the vehicle body and the base; the vehicle body is provided with a linkage part driving the lifting frame to ascend and descend so that the wheels on the vehicle body can be stressed in a more balanced mode. The pipeline internal inspection robot is effectively prevented from inclining forwards or turning over backwards, and continuous and stable work of the pipeline internal inspection robot is guaranteed.

The invention relates to a multifunctional abdomen retractor which comprises a cross piece (1), a supporting rod (2), a rack type amplitude changing rod (3), a rocking bar (5) and a hook plate (6). The supporting rod (2) can be positioned in the cross piece (1) in a liftable manner through a stopper bolt; the rack type amplitude changing rod (3) is mounted on a universal base (12); and the hook plate (6) is hooked at the end part of the rack type amplitude changing rod (3). The multifunctional abdomen retractor is characterized in that a convex plate (13) is connected to the lower part of the universal base (12) and is pivotally mounted on a pin shaft (15) at the upper end of a connector (14); the lower end of the connector (14) is inserted and mounted in an inserting hole at the upper part of the supporting rod (2) and can be rotationally positioned in the inserting hole through an elastic bolt (4) and an annular groove (16) at the lower part of the connector (14); a supporting rod sleeve (7) is also mounted on the supporting rod (2) at the lower part of the connector (14); an L-shaped curved rod (8) is mounted on the supporting rod sleeve (7); a fastening device (9) is mounted on the curved rod (8); and a long handle hook plate (10) is tightly fixed in the fastening device (9). The invention has simple structure and large traction and can finish the traction of abdomens on any position, thereby obtaining ideal operation field.

The invention discloses a novel photovoltaic module. The photovoltaic module comprises a plurality of battery strings, each batter string comprises a plurality of battery pieces connected in series through welding strips, an overlapping region is arranged between each two adjacent battery pieces in the battery strings, and buffer strips are arranged at the positions, close to the overlapping regions and between the adjacent welding strips, of the battery pieces. The two ends of the buffer strips are connected with the welding strips, or there is a gap between the two ends of the buffer stripsand the welding strips. The widths of the overlapping regions are 0-2mm. There is no piece distance between the battery pieces to greatly utilize the module space and improve the module efficiency, the buffer strips arranged at the overlapping regions of the battery pieces are employed to increase the stress areas at the overlapping positions of the battery pieces, and the previous welding stripsbearing the laminating pressure is changed to increase the stress bearing by the whole overlapping regions and the buffer strips so as to greatly reduce the piece breakage rate and the EL hidden crackratio.

The invention provides a beam column connection piece, and belongs to the technical field of connection members between beams and columns in buildings. The beam column connection piece includes a connection body; a square-shaped column connection portion extends out from the upper end and the lower end of the connection body; the center of the column connection portion coincides with the center of an end surface of the connection body; ends of a column recess inward to form column connection portion installation grooves matching the column connection portion; the upper end and the lower end of the column connection portion are connected to the column through the column connection portion installation grooves; and the shape of a cross section of the square-shaped connection body is identical to the shape of the cross section of the column. The beam column connection piece is simple in structure; the column connection portion and beam connection portions are arranged on the connection body, and then a suitable type of column connection piece can be selected to construct; and the use of the beam column connection piece is standardized, and the common standard of beams and columns can be fixed in our life, and mass production of the beams and the columns can be achieved.

An electric apparatus integrated ceiling suspension device comprises a support, a bottom case and at least two electric apparatuses, and is characterized in that: the support is fixed on the upper part of the bottom case; the electric apparatuses can be partly fixed on the upper part of the bottom case and on the support; the bottom case is provided with electric apparatus mounting holes matched with the sizes of the electric apparatuses; both sides of one side of the bottom case contacting a ceiling keel are respectively provided with a notch matched with the size of the ceiling keel. The electric apparatus integrated ceiling suspension device has the advantages that: the device has simple installation, less time consumption, great stress, infrequent distortion, quick heat dissipation, convenient adjustment; and more than two electric apparatuses can be intensively arranged on the bottom case, etc.

The invention relates to a lingual bracket. A bracket body consists essentially of a side wing and a bracket seat, wherein the side wing is convexly arranged on an upper surface of the bracket seat, and a lower surface of the bracket seat is provided with anti-skid grains; the lingual bracket is characterized in that: the side wing is arranged by deviating from one end of the bracket seat; a ligature hook is arranged at one side of the side swing positioned at the inner side of the bracket seat, which is toward the middle part; the side wing is arranged in an offset way, thus being capable of vacating an upper space at the other end of the bracket seat, leading the bracket to be capable of being firmly cemented at one end of teeth close to toothcusp, increasing orthodontic force thereof, and also decreasing the influence on chewing as jaw teeth bit the bracket to further reduce the possibility of bracket dropping, and save clinical time. One side wing can be arranged as a replaceable and movable side wing, so that the width of the groove can be adjusted; and the movable side wings with different types can be replaced when in clinical needs, and individualized adjustment can be carried out on the torque angle and protrusion and the like of the teeth.

The invention discloses a control method for improving internal defects of a high-carbon chromium bearing steel bloom. The control method comprises the steps that molten steel is cast into a large-chamfer bloom with a liquid core, continuous casting parameters are controlled, and a soft reduction process is carried out on the large-chamfer bloom with the liquid core. According to the method, the included angle between the corner of the continuous casting billet and the wide surface of the casting billet is controlled to be 30-40 degrees, and the length of the bevel edge is controlled to be 45-60 mm; the superheat degree of molten steel in the tundish is controlled to be 15-30 DEG C, and the casting speed is controlled to be 0.70-0.85 m / min; and dynamic soft reduction and static soft reduction are respectively carried out on the large-chamfer continuous casting billet with the liquid core. The internal defects of reduction cracks, center segregation and the like of the high-carbon chromium bearing steel bloom are overcome; the high-carbon chromium bearing steel bloom is subjected to macroscopic examination, the macroscopic examination comprises 0-0.5 grade of center porosity, 0.5-1.0 grade of center segregation, 0-0.5 grade of shrinkage cavity, 0-0.5 grade of middle cracks, 0-0.5 grade of center cracks and 55-68% of isometric crystal ratio; and the carbon segregation index of the center of the continuous casting billet is 0.95-1.06.

The invention relates to an improved structure based on a columnar wood clamping device. The improved structure comprises two symmetrically-arranged fixing columns, wherein fixing rods are arranged at the upper ends of the fixing columns, two fixing discs are oppositely arranged on the inner sides of the fixing columns and are provided with fixing cavities in the axial direction, at least three grooves are formed in the end faces of the fixing discs in the axial direction in a sunken mode, fixing holes matched with bolts are formed in the bottoms of the grooves, slide blocks are arranged in the grooves, and the bolts and the through holes matched with the fixing holes are arranged on the slide blocks. Arc-shaped clamping plates are arranged at the clamping ends of the slide blocks, and a plurality of hemispheric protrusions are arranged on the inner sides of the arc-shaped clamping plates. The hemispheric protrusions are arranged on the inner sides of the arc-shaped clamping plates, contact area between the arc-shaped clamping plates and a cylinder wood can be effectively decreased, the stress of the cylinder wood is increased in the clamping process, clamping stability is improved, and loosening of the cylinder wood in the processing process is avoided.

The invention discloses a tubing string stability and safety analysis-based downhole perforation test tool string optimization method. The method comprises the following steps of S1, building a tubing string-shock absorber-perforating gun dynamics model; S2, establishing an oscillatory differential equation of a perforated string; S3, establishing an oscillatory differential equation of a shock absorber; S4, establishing a tubing string-shock absorber-perforating gun coupled oscillation equation; and S5, solving a tubing string-shock absorber-perforating gun partial differential equation. The method has the beneficial effects that the research on the influence of tubing length and explosive charge of a perforating bullet on downhole tools is carried out, and the research shows that a stress of a packer is correspondingly increased along with the increment of the tubing length; a part, easily subjected to helical buckling, of a tubing appears in a position of the bottom and the middle of the tubing; along with the increment of the explosive charge, a pull pressure on the tubing is rapidly increased, and the tubing is subjected to the helical buckling more easily, so that theoretical guidance is provided for tubing string design; and the damage risk of a tubing string is lowered; and the downhole tools are protected.

The invention provides a modularized ocean energy power generation device. The modularized ocean energy power generation device comprises an outer framework, at least one inner framework and at least one hydraulic turbine generator module, wherein at least one inner framework can be separably arranged in the outer frame. At least one hydraulic turbine generator module is arranged in the inner framework. The modularized ocean energy power generation device is provided with at least one internal module, and the hydraulic turbine generator modules can form arrayed arrangement by regulating number of the internal modules. The inner framework and the outer framework can be separably arranged, so that the modularized assembly is realized, and the maintaining and mounting cost is greatly reduced.

No-axle loading-type gear-free traction machine belongs to elevator technology field. It includes machine base and the bearing frame installed on the machine base, traction motor and traction wheel, it is characterized by: the traction machine is equipped with one load-bearing main axle for carrying the elevator gross weight and two bearing frames, the traction wheel is installed between two bearing frames through the load-bearing main axle, the traction motor is suspended and installed on the axle head of the load-bearing main axle out the bearing frame, soft connection is installed between the bottom of the traction motor and the machine base. The soft connection consists of rubber cushion, pressure adjust screw and connecting base, the connecting base is connected on the machine base firmly, the rubber cushion is installed in the connecting base cavity, the top of the rubber cushion is jacketted and connected with pressure adjust screw, the installing hole on the traction motor bottom is jacketed on the pressure adjust screw. The invention has reasonable and simple structure, easy manufacture, low cost, stable and reliable use performance, noise-free, long use life, very good spread application value and market prospects.

The invention relates to the technical field of oil extraction machinery, in particular to an automatic speed-changing wide-swing-angle oil pumping machine. The automatic speed-changing wide-swing-angle oil pumping machine comprises an electric motor, a speed changing mechanism, a swing arm support, a swing arm arranged on the swing arm support, a support provided with a fixed pulley and a wellhead oil pumping device, wherein the speed changing mechanism is connected with a driving crankshaft wheel, the driving crankshaft wheel is meshed with a driven crankshaft wheel, the driving crankshaft wheel is connected with a connecting piece through a bearing, one end of the connecting piece is connected with the driven crankshaft wheel, the other end of the connecting piece is connected with the swing arm through a connecting rod, a sliding chute is arranged on the connecting piece of which one end is connected with the driven crankshaft wheel, and a bearing on the driven crankshaft wheel is sleeved in the sliding chute. The automatic speed-changing wide-swing-angle oil pumping machine disclosed by the invention has the advantages that when the two crankshaft wheels are in rotation, since the position of the bearing of a driven pulley is changed, the position of the connecting piece can be also correspondingly changed, a motion trail of the connecting rod is affected by the motion of the connecting piece, the speed of the wellhead oil pumping device in the up-stroke is higher than that in the down-stroke, the oil leakage problem existing in an oil pumping process is avoided, and the oil pumping efficiency is increased.

The invention discloses a hydraulic variant control obstacle-crossing vehicle which comprises a vehicle body and a traveling mechanism. The traveling mechanism comprises executing elements. Each executing element comprises a spoke hydraulic mechanism and a horizontal hydraulic mechanism. Each spoke hydraulic mechanism comprises a plurality of wheel track telescoping structures which are uniformly distributed on the periphery of a corresponding wheel. Each wheel track telescoping structure comprises a wheel track, a spoke and a spoke hydraulic cylinder, the wheel track is connected with one end of the spoke, the other end of the spoke is connected with the spoke hydraulic cylinder, and the spoke hydraulic cylinder controls the spoke and the wheel track to stretch and retract in the longitudinal direction. each horizontal hydraulic mechanism comprises axles and a horizontal hydraulic cylinder. Compared with the prior art, the hydraulic variant control obstacle-crossing vehicle has the beneficial effects that (1) the advantages of wheels and a leg-type moving mechanism in the aspects of speed and obstacle-crossing capacity are integrated; and (2) a hydraulic transmission system is adopted according to the characteristics that an executing mechanism is provided with a large number of hydraulic cylinders and is large in stress.

A feeding machine capable of throwing bait for 360 degrees comprises a rack. A bait box, a control box, a feeding box and a bait throwing layer are arranged in the rack in sequence from top to bottom, one side of the upper port of the bait box is hinged to an upper cover with a solar cell panel, the lower end of the bait box is a hopper shaped like an inverted trapezoid, a discharge port is formed in the bottom of the bait box, a base plate of the control box is shaped like a ladder, a control box body and a storage battery are arranged on the high-end of the base plate of the control box, the low-end of the base plate of the control box is provided with an upper discharging hole, a left bait box supporting seat and a right bait box supporting seat, a mounting hole with a bait pressing spring piece is formed in the high-end, a circular groove is formed in the upper end face of a feeding box base plate of the feeding box, the inner bottom face of the groove is provided with a center hole with an inner thread, a lower discharging hole and a feeding plate, the upper end face of the feeding box base plate is further provided with a feeding plate electric motor, an output shaft of the feeding plate electric motor is provided with a worm, a lower discharging pipe and a bait throwing plate cover are arranged on the portion which is distributed with inner thread holes in the lower end face near the lower discharging hole, an assembly hole is formed in the upper end face of a bait throwing layer base plate of the bait throwing layer, the lower end face of the bait throwing layer base plate is provided with a bait throwing plate electric motor, and an output shaft of the bait throwing plate electric motor is provided with a bearing and a bait throwing plate in series. The feeding machine capable of throwing the bait for 360 degrees is suitable for throwing the bait in large areas of water.