434results about How to "Reduce the difficulty of processing and manufacturing" patented technology

The invention discloses a deep sea bionic pressureproof shell. An axial-symmetry eggshell-shaped structure with the length of L, the width of B and the turning radius of R(x) is formed by a left end socket, a right end socket and a middle shell, wherein the thickness t2 of the middle shell is of an equal-strength variable-thickness structure, the thickness t1 of the left end socket and the thickness t3 of the right end socket are respectively of an equal-thickness structure, the left end socket and the middle shell are fixedly connected, and the right end socket and the middle shell are connected by a flange bolt or a movable hatch cover with a seal ring. The deep sea bionic pressureproof shell has good mechanical properties, in-shell space utilization rate, hydrodynamic characteristics and passenger comfort, and comprehensive improvement on safety, carrying capacity, mobility and diving time of a diving device is facilitated; meanwhile, the weight of the pressureproof shell is lightened, the reserve buoyancy of the pressureproof shell is increased, and the processing and manufacturing difficulty and cost are reduced.

The invention discloses a calibrating method for cameras of a multiple-camera system. The method comprises the following steps of: step 1. opening all cameras of the multiple-camera system, and collecting eight images of different positions and attitudes in a calibrating template; step 2. processing the collected images, and detecting the feature points of the images; step 3, utilizing a photogrammetric method to perform relative orientation and absolute orientation on the calibrating images to determine the initial values of the parameters to be calibrated in the cameras; step 4, performing optical beam adjustment calibration on the cameras according to the established cameral deformation model, realizing the optimized adjustment of the calibrating parameters, and finally performing temperature compensation on the calibrating results. Proved by experiments, the invention has the advantages of simple operation, practicality, flexibility and high precision.

The invention provides an energy dissipation and shock absorption mechanism. The energy dissipation and shock absorption mechanism comprises a metal damper, a supporting or rigid wall for arranging the damper, and a connecting device connected with a structure. Two external connecting mechanisms are arranged on the metal damper; one of the external connecting mechanisms is connected with other connecting structures on a building, and the other external connecting mechanisms is connected with the building through the supporting or rigid wall; and the connection is riveting, bolt pin connection, bolt connection or welding. The energy dissipation and shock absorption mechanism comprises the metal damper, so the compression performance of the metal is used for dissipating the energy; the hysteresis curve of the energy is saturated, namely, under the condition of very small deformation (such as small vibration), the energy dissipation and shock absorption mechanism can enter plastic energy dissipation from the full section; moreover, the required quantity of materials is low, so the energy dissipation and shock absorption mechanism is convenient to install and exchange; compared with the conventional stickness damper, the energy dissipation and shock absorption mechanism has the characteristics of long durability and maintenance freedom.

The invention discloses an automatic orderly weight adding mechanism, comprising a plurality of plate shaped weights 4, a weighing part and a loading-unloading part. The weighing part comprises a weighing plate 11. The loading-unloading part comprises support column components 3. Each support column component 3 comprises a support column 31 whose lower-part rod section is an optical rod section; a sleeving tube 33 sleeving the optical rod section in sequence, and an elastic body 32 topped between the support column and the sleeving tube. The upper-part rod sections of the support columns and the outer part of the sleeving tubes are provided with outwardly protruding support steps 69 arranged in the axial direction and at interval. The lower ends of the optical rod sections of the support columns are fixedly arranged on the lifting platform 2 that is arranged horizontally and driven to lift by a driving mechanism. Each sleeving tube is provided with an external support body 5 used to restrict the sleeving tube from falling to the lowest position. The mechanism of the invention aims to reducing the dimension in the vertical direction, to reducing the fabricating difficulty and to increasing the operation precision of equipment and provides this automatic orderly weight adding mechanism. With such a designed structure, the increase in the number of weights under a specific size can be realized so as to realize the goals of a compact structure and an enlarged measurement scope.

The invention discloses a system and method for prefabricating and installing an informatization whole-lifecycle pipeline. The method comprises the following steps of outputting an ISO-IDF (International Standard Organization-Integrated Data File) interface file in a design stage, reading coordinates and data in an IDF, and forming a prefabricated pipe section package; creating a prefabricating plan according to the production ability, the productivity and the processing process of each production line, forming a work order, and generating barcode data; calculating the length of a pipe, creating CNC (Computerized Numerical Control) cutting data, length data and prefabricating data, automatically distributing the work order to each production line, and carrying out the production process tracking and the state tracking; and scanning a barcode once by using a scanner, wherein the scanning shows that a corresponding working procedure is completed and qualified, real-time stage variation exists in a database after each scanning, and thus the production process and the state of the pipe can be queried in a tracking way. According to the system and method disclosed by the invention, the organic integration of whole-lifecycle information during a designing, prefabricating and installing process of a pipeline can be reached, and the purposes of data search, resource sharing and information communication are realized.

The invention relates to a pairing lengthening device for a two-in-one pipeline and belongs to the technical field of equipment manufacture. The pairing lengthening device comprises a track and four pairing lengthening roller carriers, wherein the pairing lengthening roller carriers can be arranged on the track in the manner that the roller carriers can move along the track; each pairing lengthening roller carrier comprises radial roller adjusting devices, lifting devices and traveling devices; the traveling devices are mounted at the lower parts of the pairing lengthening roller carriers and arranged on the track in the manner that the traveling devices can move along the track; the radial roller adjusting devices can be mounted at the upper parts of the roller carriers in a vertically moving manner; the lifting devices are arranged between the traveling devices and the radial roller adjusting devices and are suitable for driving the radial roller adjusting devices to move vertically. According to the invention, since the pairing lengthening roller carriers adopt modular design, the design efficiency is improved and the production cycle is shortened.

The invention relates to a non-quenching high-toughness cold-working die steel belonging to the technical field of metallurgical manufacture. The novel cold-working die steel is developed by optimizing and creating a product component formula, adding alloy elements, rolled and cold thinned texture and adopting the processes of remelting and fining electroslag in an electric furnace, forging many times in a great forging proportion and special heat treatment. The manufacture process comprises the following flows: selecting a chemical component range; drawing an ingredient scheme according to the chemical component range; melting at an intermediate frequency; remelting (refining) the electroslag; annealing; discharging; extending hydrogen; forging; normalizing; tempering; mechanically processing; and detecting. The important manufacture process comprises the steps: (1) refining; (2) forging; (3) extending hydrogen; and (4) normalizing; and tempering so as to obtain non-quenching high-toughness cold-working die steel. The invention has reasonable chemical component proportion, low manufacture cost, good alloying effect, great forging transformer ratio, favorable density of metal structure and high toughness performance index. Various performance indexes of the product reach or exceed the levels of similar international and national products.

The invention belongs to the technical field of sewing machines and particularly relates to a sewing machine feeding mechanism. A feed lifting crank is arranged at the front end of a lower main shaft. Sliding blocks are fixedly arranged on the lower main shaft. Feed lifting sliding blocks are arranged on the feed lifting shaft. Sliding grooves are formed in the left ends and the right ends of a differential motion tooth frame and a main cloth feeding tooth frame. The sliding blocks and the feed lifting sliding blocks are arranged in the sliding grooves in the two ends of the differential motion tooth frame and the two ends of the main cloth feeding tooth frame. Tooth frame blocking plates are arranged on the front sides of the sliding blocks. The tooth frame blocking plates are in contact connection with the differential motion tooth frame. A first differential motion crank fixed on a differential motion shaft is arranged on the front side of the differential motion tooth frame. The feed lifting crank, the tooth frame blocking plate, the first differential motion crank and the feed lifting shaft press and limit the main cloth feeding tooth frame and the differential motion tooth frame. The first differential motion crank is connected with the main cloth feeding tooth frame through a differential motion connecting rod. Differential motion teeth are arranged on the differential motion tooth frame. Cloth feeding teeth are arranged on the main cloth feeding tooth frame. By two-end clamping limiting, the differential motion tooth frame cannot be loosened even after long-time using.

A large-view-field catadioptric fundus camera optic system belongs to the field of medical optical instruments and aims at resolving technical problems in the prior art that a total refraction system is stray in light, and a total catadioptric system is small in imaging view field, complex in structure, free of diopter compensation, difficult in manufacturing off-axial retina objective lenses and the like. The large-view-field catadioptric fundus camera optic system comprises two parts including an imaging light path and an illumination light path, wherein the imaging light path and the illumination light path share a reflection type retina objective lens primary lens, a reflection type retina objective lens secondary lens and a hollow reflection lens. The large-view-field catadioptric fundus camera optic system further comprises a refraction type illumination relay lens group, an illumination diaphragm, a refraction illumination collecting lens group, a light source, a refraction focusing lens group, a refraction type focus imaging lens group and a camera, wherein the refraction type imaging lens group adopts a free-form surface to rectify residual off-axial aberration of a reflection type retina objective lens. Therefore, a fundus imaging system is guaranteed to meet imaging requirements in the area of 45-degree view field, and performance of the refraction fundus camera optical system is improved.

The invention relates to a large-pipe-diameter shell section pair group extension device which comprises a shell section three-dimensional adjustment device and at least two groups of conveying roll wheel frames, wherein the conveying roll wheel frames and the shell section three-dimensional adjustment device are arranged on the same straight line side by side. The shell section three-dimensional adjustment device comprises a conveying roll frame, a first roll wheel frame and a second roll wheel frame which are arranged on a bottom layer guide rail, the conveying roll frame is arranged between the first roll wheel frame and the second roll wheel frame, and shell sections arranged between bottom layer rails axially move an oil cylinder to drive the second roll wheel frame to be adjusted. The large-pipe-diameter shell section pair group extension device is simple in structure, high in reliability, low in processing difficulty compared with like products, little in material use quantity, low in cost and the like.

The invention discloses a bearing type RV speed reducer, and belongs to the technical field of speed reducers. The speed reducer comprises a pin wheel housing, an installation frame is arranged in the pin wheel housing in a rotary mode, the installation frame is provided with two cycloid gears in transmission connection with the pin wheel housing through needle rollers, the installation frame is rotatably provided with a power input shaft, the power input end of the power input shaft extends out of the installation frame, the power input shaft is provided with two eccentric drive wheels which penetrate through the centers of the two cycloid gears respectively and are matched with the corresponding cycloid gears, the installation frame is rotatably provided with at least two positioning shafts which are symmetric to the rotation center of the power input shaft, and each positioning shaft is provided with two eccentric transmission wheels which penetrate through the two cycloid gears respectively and are matched with the cycloid gears. Power center input and first speed reduction are achieved. Compared with the prior art, the bearing type RV speed reducer reduces the number of power input shafts and use of sun gears and planetary gears, manufacturing cost is low, transmission is reliable, machining and installation are convenient to achieve, and service life is prolonged.

The invention discloses a steel pipe tandem rolling restraint mandril preparing method, which comprises the following steps: forging / rolling blank; annealing outright; hot straightening; rough / semi-finish; heat hardening; (twice) high tempering; grinding belt; chrome plating; dehydrogenating. The invention reduces the material cost, which improves the blank yield.

The invention discloses a fusion reactor liquid tritium breeder cladding module for realizing remote replacement by using a single layer guide tube. The fusion reactor liquid tritium breeder cladding module comprises a first wall, wherein parallel first wall helium gas flow channels are distributed in the first wall; the outlets of the first wall helium gas flow channels are communicated with a second-stage helium gas header; the front face of the first wall is provided with a reserved hole; the single layer guide tube passes through a U-shaped tritium breeding zone which is not blocked by any clapboard, and is arranged in the preserved hole in a way of being vertical to the front face of the first wall; the end face of one end of the single layer guide tube is flush with the back walls of the first wall helium gas flow channels; the other end of the single layer guide tube is fixed on an internal back plate; the pipe orifice of one end, which is far away from the preserved hole, of the single layer guide tube is provided with a sealing plate; the single layer guide tube comprises a single layer guide tube which is provided with a branch tube, and a single layer guide tube which is provided with a ventilation hole; and the branch tube and the ventilation hole are communicated with the second-stage helium gas header. The fusion reactor liquid tritium breeder cladding module has the advantages of safety, reliability, simple structure, easiness in processing and manufacturing, and the like, and can be applied to a nuclear fusion device.

Provided is a diving instrument buoyancy control and pressure compensation system and method, the system includes a shell body, the inside of the shell body is filled with gases with a certain compressive stress, the shell body is provided with two and above elastic gasbags, the insides of the elastic gasbags are filled with gases with a certain compressive stress, and through a protective shell with holes wrapping on the outsides of the elastic gasbags, are in contact with the inside and outside of the shell body, the stresses of the filled gases inside every elastic gasbag are all different, and the gas stress inside the shell body is lower than the gas stress inside the elastic gasbag; the inside of the shell body is provided with an elastic water bag, a two-way seawater hydraulic pressure pump and a seawater electric magnetic valve, and the elastic water bag through the above two-way seawater hydraulic pressure pump and the seawater electric magnetic valve is through connected with a water environment outside the shell body in order to conduct water transmission among each other; the inside of the shell body is also provided with a motor connected with the two-way seawater hydraulic pressure pump, the motor controls the control system of the motor and the seawater electric magnetic valve in operations and the electric power supply for supplying electricity to every installation inside the shell body. The disclosed diving device buoyancy control and pressure compensation system, wherein the buoyancy control is converted from a closed form oil hydraulic pressure to an open form sea water hydraulic pressure, expands the scope of the buoyancy control, and increases the reliability and compatibility with environment.

The invention discloses a reinforced alloy material; and a surface layer of the alloy material contains such elements as aluminum oxide, silicon dioxide and nanometer graphene. The alloy material is deeply extended on the basis of anodic oxidation, microarc oxidation and multi-component composite oxidation, and is a result under a complex effect of instant high temperature, multi-component composite oxidation liquid and nanometer penetrant through applying positive and negative high voltage, high current and positive and negative pulses by using unique structures, physical and chemical characteristics as ultrahigh hardness and high-temperature resistance, small size effects and surface and interface effects of such nanometer materials as nanometer graphene and nanometer silicon dioxide. The method comprises the steps of: (1) surface cleaning; (2) oxidation; and (3) penetration. The light alloy material after surface reinforcement by the method, in particular a combustion chamber of an internal combustion engine with fuel combustion consumption and generating a pollution source is prominent in reflection thermal insulation anti-carbon self catalysis function, and is higher in high-temperature erosion resistance and wear resistance.

The invention discloses a forging method for a water chamber head of a steam generator of a third-generation nuclear power station, which is used for forging the water chamber head of the steam generator of the third-generation nuclear power station. The internal spherical radius of the water chamber head is no less than 1500mm, the water chamber head comprises a bent section, a straight section and a nozzle, and double vacuum steel ingots are used as raw materials. The forging process includes the steps: firstly, cogging; secondly, combined forging; and thirdly, rotating extrusion. A megaton free forging press is used for forging the double vacuum steel ingots into cylindrical billets, and then the internal shape of a forging is forged by means of rotating extrusion through a mould. The forging manufactured by the forging method can meet the technical requirement of the water chamber head, water chamber head forging materials are compact, reasonable in metal flow line distribution and not easy to crack, difficulty in machining is reduced, metal cutting output is less, and machining difficulty and cost can be reduced.

The invention provides a pure electric wheelhub drive axle unit. The pure electric wheelhub drive axle unit is of a left-right symmetric structure, more uniform in a loading and bearing capacity, low in processing and manufacturing difficulty, adjustable in a total length of the driving axle, adaptable to various models of vehicles, reduces a development cost, improves a reduction ratio and improves an energy utilization rate. The pure electric wheelhub drive axle unit comprises the main axle body; the main axle body is of a left-right symmetric structure; motor arrangement grooves are arranged on two sides of the main axle body; positioning thread holes are arranged on end surfaces on two sides of the main axle body; the housings of the wheelhub decelerators are fixedly connected to the positioning thread holes on end surfaces of corresponding sides through bolts; a driving motor on the corresponding side is arranged inside the motor arrangement groove; a motor seat of the driving motor on the corresponding side is connected to an inner end surface of the housing of the wheelhub decelerator through a connection flange; and a brake assembly is fixed on the outer end surface of the housing of the wheelhub decelerator.

The invention belongs to the field of structural vibration reduction, and in particular, relates to an electromagnetic eddy rotating damper. The electromagnetic eddy rotating damper comprises an outer cylinder, an inner cylinder and a lead screw, wherein the inner cylinder is positioned in the outer cylinder; the outer peripheral surface of the lead screw is matched and connected with a screw nut; the outer peripheral surface of the lead screw is fixedly connected with the inner wall of the inner cylinder; a coil is arranged on the outer peripheral surface of the inner cylinder; an annular permanent magnet is fixed on the inner wall of the outer cylinder, and is corresponding to the coil; a thrust bearing is arranged between the outer cylinder and the screw nut; and a roller bearing is arranged between the outer cylinder and the inner cylinder. The electromagnetic eddy rotating damper can effectively consume the energy of earthquake and wind vibration; in particular, under major earthquake, the damper is more obvious in energy consumption; and the damper is small in size and various in mounting forms.

The invention discloses a laser tracking measurement system having the spherical revolution bounce error compensation function and a compensation method thereof. The laser tracking measurement system comprises a horizontal rotary table; a support is installed on the horizontal rotary table; and a spherical revolution mechanism is installed at the support. The spherical revolution mechanism includes a standard ball, a support plate with an opening at the center, a first displacement sensor, a second displacement sensor, and a laser head; the standard ball is arranged at the center of the support; the central opening of the support plate passes through the standard ball and then is installed at the support; the first displacement sensor and the second displacement sensor are arranged at a reversed extension line of a laser beam emitted by the laser head and are respectively arranged at the two sides of the standard ball. The standard ball is not contacted with the support plate because of the location at the center of the spherical revolution mechanism and the distance between the sphere center and the target point is obtained precisely based on the measurement value and the calibration value, so that the spherical revolution bounce error of the spherical laser tracking mechanism is compensated and thus the good measurement precision can be realized under the circumstances that the revolution bounce of the laser tracking mechanism is high.

The invention discloses a simple manual spiral earth fetching device for reinforcing a pile core of a pre-stressed pipe pile, which can solve the problem that gravel, brick blocks, hard rock and soil and other various sundries are mingled in the pile core of the pre-stressed pipe pile. The earth fetching device comprises a drilling rod, a force-adding rod and a lifting mechanism, wherein the lifting mechanism is connected with the upper end of the drilling rod, spiral earth rolling blades are arranged on the side surface at the lower end of the drilling rod, a plurality of plug holes are arranged on the side surface of the drilling rod, and the force-adding rod is in plug-in connection with the plug holes. The spiral earth rolling blades are provided with a cavity with an upward opening as a whole. A spiral drill tip is arranged at the lower end of the drilling rod. The lifting mechanism comprises a simple tripod and a fixed pulley component. Alloy steel rake teeth are welded at the lower ends of the spiral earth rolling blades. By adopting the simple manual spiral earth fetching device, the actual needs for fetching earth for specific small pile-diameter pipe cores can be satisfied, the simple manual spiral earth fetching device is particularly applicable to applications under dense pile heads and complex site conditions, the construction efficacy is high, the operation is high, the construction difficult problem of fetching the earth for the small pile-diameter pipe cores can be well solved, and the simple manual spiral earth fetching device is safe and convenient.

The invention provides a broadband reduction RCS composite material based on crossed bow-tie-shaped AMC (artificial magnetic conductors). The material is characterized in that the composite material is in a three-layer structure, and comprises an AMC patch array, a medium substrate, and a metal floor in sequence from top to bottom, wherein the AMC patch array is arrays respectively formed by two kinds of crossed bow-tie-shaped AMC patches. The shapes of the two kinds of crossed bow-tie-shaped AMC patches are that the center is square, four edges of the square are respectively connected with four trapezoids, the short bottom edges of the trapezoids are connected with the square, the long bottom edges of the four trapezoids are connected with rectangles in sequence, and each patch is a whole integrated structure. The composite material is good in broadband performance. Compared with a metal sheet in the same size, the composite material has RCS reduction of more than -10 dB in the frequency range of 16.2-27.2 GHz, covering the whole K-band. The composite material is small in thickness, and can be conformal easily. The composite material is suitable to manufacture ultralight and ultrathin wave absorbers or radar absorbing materials. The composite material is simple in structure and materials, and is low in processing and manufacturing difficulty.

The invention discloses an electric fuel oil jet propeller which comprises an air inlet, a fan, a motor, an air deflector, a combustion chamber and a tailpipe with the thrust of 1-50kg. The electric fuel oil jet propeller is characterized in that fan blades are fixed on a fan hub which is fixed on an outer rotor direct-current motor rotor; the motor is fixed on an air deflector inner support ring through a bolt; an air deflector outer ring is embedded on the inner wall of a ducted casing; a heat insulation shield is arranged at the rear end of the air deflector inner support ring; the combustion chamber is arranged at the middle-rear end of the ducted casing; a pneumatic fuel oil nozzle ring is arranged at the front section of the combustion chamber and communicated with an oil pipeline; a falcate flame stabilizer is arranged at the rear end of the pneumatic fuel oil nozzle ring; an igniter is arranged at the rear end of the falcate flame stabilizer, passes through the combustion chamber and the ducted casing and is fixed on the outer wall surface of the ducted casing; and the inner wall of the ducted casing adopts a heat insulation coating. The propeller can be used as main power of small and middle size delivery tools and has simple structure, small size, light weight and large working thrust.

The invention relates to a hybrid electric vehicle transmission device. The hybrid electric vehicle transmission device comprises a planetary gear coupling mechanism, wherein the planetary gear coupling mechanism comprises a single-planetary row and a double-planetary row, the single-planetary row comprises a first sun wheel, a first planet gear, a first planet carrier and a first gear ring, and the double-planetary row comprises a second sun wheel, an inner planet wheel, an outer planet wheel, a second planet carrier and a second gear ring. An input shaft is used as the first transmission shaft, the two sun wheels are connected with each other and then connected with a rotor shaft of a second motor, and a second transmission shaft is constituted. The two planet carriers are connected to constitute a third transmission shaft, the first gear ring is connected with a rotor shaft of a first motor to constitute a fourth transmission shaft, and the second gear ring constitute an output shaft. The input shaft is connected to the output end of an engine through a torsional shock absorber. The first motor is connected to one end of a first brake, and a transmission housing is connected tothe other end of the first brake. The second motor is connected to one end of a second brake, and the transmission housing is connected to the other end of the second brake. By using the embodiments of the hybrid electric vehicle transmission device, the device structure can be optimized, and the transmission efficiency is improved.

The invention discloses a sensing head of an all-fiber current transformer. Grooves are respectively formed in an upper cover of the sensing head and a lower cover of the sensing head; a sensing optical fiber, an all-fiber one-fourth wave plate and an optical fiber end surface reflecting mirror form an optical fiber sensing part of the all-fiber current transformer by a welding mode; the optical fiber sensing part is uniformly wound on a sensing framework in a spiral manner; the sensing framework wound with the optical fiber sensing part is placed in the groove of the lower cover of the sensing head and integrally packages the upper cover of the sensing head with the lower cover of the sensing head; a lead head which is internally provided with a lead hole is processed in the upper cover of the sensing head; and a polarization-preserving optical fiber is used as a lead-out end of the sensing head of the all-fiber current transformer, is partially connected with the optical fiber sensing part and is led out of the lead hole. According to the sensing head disclosed by the invention, various negative influences such as linear birefringence, Verdet constant temperature effect and one-fourth wave plate phase delay temperature effect of the optical fiber sensing part can be effectively eliminated.

The invention discloses an oppositely penetrating steel bar and oppositely penetrating vertical insert plate type beam column two-way rigid joint. Insert plates and horizontal steel bars are inserted into a concrete-filled steel tube column in the two mutual vertical directions. The two ends, penetrating through the concrete-filled steel tube column, of each insert plate are both connected with corresponding insert plate brackets which are in butt joint with steel beams fixedly through connecting plates. The two ends, penetrating through the corresponding insert plate and the concrete-filled steel tube column, of each steel bar are in butt joint with the steel beams fixedly through end plates or steel bar brackets. In the insert plate brackets, the insert plates are connected to the middle of one end of an upper insert plate bracket flange and one end of a lower insert plate bracket flange in an inserting mode. Insert plate bracket webs are connected between the other ends of the two insert plate bracket flanges and butt joint with the insert plates on the same plane. The steel bars are welded to steel bar bracket flanges at the four corners of steel bar bracket webs. The oppositely penetrating steel bar and the oppositely penetrating vertical insert plate type beam column two-way rigid joint can meet the force transmission requirement for the beam column rigid joint and be widely applied to rigid connection of the H-shaped steel beams with the concrete-filled steel tube column; the structure is simple, force transmission is clear and definite, machining is convenient and rapid, and concrete pouring is easy.

The invention discloses a hybrid power transmission device of a dual-mode two-stage planet wheel. The hybrid power transmission device comprises an engine, a first motor, a second motor, a planet carrier and a differential, wherein a first planet row and a second planet row are arranged on the planet carrier, the first planet row comprises a first-stage planet wheel and a second-stage planet wheel, the second planet row also comprises the first-stage planet wheel and the second-stage planet wheel, an outer gear ring of the first planet row is connected with the engine, the second motor is connected with a sun wheel of the first planet row, and the outer gear ring of the second planet row is connected with the differential; and the first motor is connected with the planet carrier, and the planet carrier is connected with the outer gear ring of the first planet row by closing a second wet type clutch. The hybrid power transmission device of the dual-mode two-stage planet wheel can realize a variety of working modes, reduce the requirements on the rotational speed and the torque of the motors and reduce the technical requirements on the motors, and the direct effect is that the difficulty in processing and manufacturing of the motors is reduced.

The invention belongs to a vehicle transmission, and provides a vehicle hybrid power system achieving multi-power-source coupling. The problems that as for an existing hybrid power system, a motor isexcessively large in torque and excessively low in rotating sped, and thus the system is large in size, large in weight and high in cost are solved. The vehicle hybrid power system comprises an engine, a first motor, a second motor, a speed reducer and an output flange disc; the speed reducer comprises a speed reducer box, an input shaft and an output shaft, and further comprises a one-way clutch,a planetary gear train, a first motor gear pair and a second motor gear pair which are arranged in the speed reducer box; the planetary gear train comprises a sun gear, a planetary frame, a gear ringand planetary gears; one end of the input shaft is arranged on the speed reducer box and connected with engine output, and the other end of the input shaft is arranged on the gear ring; one end of the output shaft is fixedly connected with the gear ring, the other end of the output shaft is fixedly connected with the output flange disc, and outer teeth of each planetary gear are engaged with inner teeth of the gear ring and outer teeth of the sun gear correspondingly; and a first motor passive gear is arranged on the outer side face of the gear ring, and a second motor passive gear is coaxially and fixedly connected with the sun gear.

The invention discloses a single and double hanging point conversion type lifting device which comprises working motors, speed reducers driven by the working motors, and wind drums for winding steel wires, wherein two working motors, two speed reducers and two wind drums are arranged symmetrically; the other end of each of output shafts of the working motors is connected with a synchronizing shaft through a coupling; two synchronizing shafts are connected through an electromagnetic clutch in a transmission mode; and the outer sides of the output shafts of the speed reducers on the ends of the two winding drums are respectively provided with a lifting range indicating device and a position controlling device. The invention has the advantages that after the working motors drive the speed reducers to change speed, the winding drums are driven to rotate and drive a gripping beam and a gate thereof to raise or fall by releasing or extending the steel wires on the winding drums; two mechanisms are connected in the transmission mode through the coupling, the synchronizing shafts and the electromagnetic clutch between the two synchronizing shafts so that conversion between single hanging point and double hanging points and synchronization when operation in double hanging points can be realized; and compared with a lifting mechanism of a conventional gantry crane, one secondary lifting mechanism is saved and the integral structure is simple.

The invention discloses a multidimensional intersecting line tapping and cutting system for a pipeline. A rotary roller way component, a conveying roller way component, a cutting trolley, a vertical column component, a transverse arm and a cutting handpiece are scientifically and organically combined; under the control of software, a workpiece can be rotated and conveyed, the trolley can travel, and the cutting handpiece can go up and down; and a handpiece part can do single-shaft motion, linkage of any two shafts or linkage of three shafts, such as rotation, swing rotation and lifting rotation. The conventional four-connecting-rod mechanism has a shortcoming of small swing angle. A cutting torch can swing by virtue of a fan-shaped plate structure and can swing at a large angle in any direction. A rotary motor is arranged above a main arm; the multidimensional intersecting line tapping and cutting system is simple in structure and convenient to mount; a handpiece space is saved; the lifting mechanism of the handpiece has a V-shaped wheel guide structure and is reliable in structure; and due to the integration of a cutting torch clamp, the cutting torch can be kept on a rotary axis.