77results about How to "Adapt to working conditions" patented technology

The invention relates to a carrying and conveying robot comprising a bearing table, execution mechanisms and a control module. The bearing table is provided with a drive device. The drive device regulates the speed and direction of the bearing table on the basis of control information of the control module so that the bearing table can be used in cooperation with the execution mechanisms for carrying goods on the basis of the control information of the control module. The robot further comprises a magnetic belt guide unit and a vision guide unit. The control module determines at least one route on the basis of a first position parameter and a second position parameter of a carrier in an assigned area and indicates the drive device to move along the at least one route preset according to guidance of the magnetic belt guide unit so that the carrier in the unloaded state can be carried to the first position from the second position, and the control module controls the bearing table to carry the carrier, fully loaded through the execution mechanisms according to placement morphological parameters of the goods in a corresponding movement manner, to the assigned second position according to the preset at least one route. By means of the dual manner of magnetic belt guidance and vision guidance, positioning of the robot can be more accurate, and efficiency can be higher.

The invention provides a safety protecting work trolley for chamber, belonging to the large water-power engineering underground chamber excavating safety protecting instrument, comprising a protecting shed, a working platform, an adjusting device and a moving device, wherein the protecting shed is composed of a protecting roof truss and a steel plate net; the protecting roof truss comprises a level rod, a vertical rod and a bevel rod; the head and tail of the level rod are connected and fixed to the top end of the upright rod; the vertical rod is fixed between two mutually parallel level rods; the bevel rod is mounted between the top end of the vertical rod and two ends of the level rod so as to form the protecting roof truss with symmetrical slopes. The working platform comprises an upper platform, a middle platform and an extension platform; the upper platform is set on the level rod; two ends of the middle platform are provided with platform lifting oil cylinders; the piston rods of the platform lifting oil cylinders are mounted at two ends of the upper platform. The invention is fit for the full process of excavating and supporting chamber; the invention has multiple suitability and high safety protecting design level.

The invention relates to an undisturbed soil sampler and a sampling method. The undisturbed soil sampler comprises a drill bit, wherein the drill bit is connected with one end of a drill rod, and the other end of the drill rod is connected with a power box for driving the drill rod to rotate; the drill bit comprises a soil container connected with the drill rod, and a tool bit arranged at the end part of the soil container and used for cutting soil; the side wall of the soil container is provided with a soil cutter in an embedding manner, and the edge direction of the soil cutter is perpendicular to the axis of the soil container; and the soil cutter is connected with a mover driving the soil cutter to rotate and enabling the tool bit at the front end of the soil cutter to transversely cut into the soil in the soil container. The drill rod is driven by the power box to rotate, and the drill rod can drive the tool bit to rotate so as to cut the soil; by virtue of the rotation of the drill bit, the soil at the center enters the soil container, the soil after the drilling can be completely taken out by virtue of the soil container, the situation that the drill rod cannot be unplugged is avoided, a hole position is prevented from being changed in the drilling process, and the drilling efficiency and quality can be improved. By adopting the undisturbed soil sampler and the sampling method, an undisturbed soil sample can be obtained in the case of little disturbance.

The invention belongs to the technical field of air compressors, relates to an oil-free compressor used in a locomotive, in particular to an eccentric block-connecting rod reciprocating piston total oil-free lubricated compressor. The oil-free compressor comprises a motor, cylinders, a piston connecting rod assembly, an air valve assembly, cooling fan and the like, wherein, two cylinders are symmetrically arranged above and below a motor shaft, and can also be arranged at the left and the right of the motor shaft, and the two cylinders are coaxial. Connecting rods are sheathed on the motor shaft by a radial ball bearing and an eccentric block, small top end of each connecting rod is provided with two needle roller bearings with an one-side sealed structure, and a crank-connecting rod mechanism drives a piston to realize reciprocating motion in the cylinders. An air inlet valve, a valve plate and an air outlet valve are arranged between the cylinders and cylinder caps, and the valve plate is of a flat-sheet structure, and is provided with an inlet flow channel and an outlet flow channel. The cylinder caps are provided with air inlet chambers and air outlet chambers. The oil-free compressor has the advantages of oil saving, environmental protection, and simple operation and maintenance.

The invention relates to a wind power generation main bearing which belongs to the aerogenerator field, the wind power generation main bearing is characterized by comprising a main bearing upper limb, a main bearing lower limb, an anti-thrust cylindrical roller and a holder; the inner sides of the main bearing inner limb and the main bearing lower limb are provided with two rows of anti-thrust cylindrical rollers; the outer side of the main bearing inner limb is provided with a single row of centripetal cylindrical rollers and the cylindrical rollers are placed on the holder. The bearing of the invention saves a main shaft so that the impact of an original stiff shaft on a gear box and a generator can be reduced greatly and the service life of the gear box and the generator can be prolonged; the transmission of power can be realized well and the main bearing of the invention is easy to be repaired and detached. The main bearing can stand axial force with big load and big radial load, which can be well suitable for the working condition of aerogenerators with no main shaft, thus meeting the stress requirements of the aerogenerator.

The invention belongs to the signal processing technical field and relates to a calibration method and calibration system for improving the preset accuracy of a YTO. According to the calibration method and calibration system of the invention, a frequency measuring module can be additionally arranged in a programmable logic unit so as to measure middle frequency, so that the error of the practical output frequency and set frequency of the YTO can be obtained through calculation, and therefore, an outer connection testing instrument and device are not required, and testing connection can be simplified, and calibration cost can be decreased; and only two manual calculation points are required, and a group of obtained empirical values can be adopted as initial values of all loops, and therefore, manual debugging workload can be decreased. The calibration method and calibration system of the invention can realize instant calibration for devices which are insensitive to frequency switching time; the calibration method and calibration system of the invention can be more applicable to field working conditions; and the calibration method and calibration system can assist in avoiding influences of temperature drift and aging on the locking of the loops, so that the loops can work more stably and reliably.

The invention discloses a long cone and rolling cone type CVT (continuously variable transmission), which comprises a box body, a first long cone roller wheel, a second long cone roller wheel, at least one pressure device, a first thrust bearing, a second thrust bearing and a middle rolling cone wheel set, wherein the middle rolling cone wheel set comprises a middle rolling cone wheel, a connecting device and an adjusting device; a first conical surface and a second conical surface are arranged on the middle rolling cone wheel; and the first long cone roller wheel and the second long cone roller wheel are connected with the box body through the first thrust bearing and the second thrust bearing respectively. The axial pressing action of the first long cone roller wheel is performed through the pressure device; the contact positions of the middle rolling cone wheel on the two long cone roller wheels are adjusted; and the working radiuses of the two long cone roller wheels can be continuously changed to achieve the effect of CVT. According to the CVT, the geometrical slippage value in the optimal transmission state is 0, the geometrical slippage phenomenon in the cone wheel type long cone and rolling cone type CVT is effectively reduced, the transmission efficiency is improved and the transmission power is increased. The CVT can be used for the fields of various vehicles, ships, mechanical transmission and the like.

The invention adopts transport motion as round or linear or elliptical vibration mode motion of a screen box, and a screen drum installed on the screen box moves along with the screen box and makes fixed axis relative rotation around the longitudinal axial line of the screen drum. Materials in the screen drum make point spatial compound curvilinear motion. Because the materials in the screen are under the action of multi-directional exciting force in the space, all kinds of different demands on the vibrating screen can be better met. The screen box is installed on a base by a bearing spring, and is excited by an exciting motor to make round or linear or translational elliptical or variable linear or variable elliptical vibration and vibration in other different vibration modes. The screen drum makes relative fixed axis rotation at uniform speed or variable speed or in a set rule around the own axial line by an anti-vibration driving motor. Vibration of the screen box can be designed and determined based on a ''center of force theory of an inertia vibrating screen'' and an ''unequal mass-radius product following self-synchronizing theory'', so that the screen box can make vibration in all kinds of different trace vibration modes. Rotation of the screen drum can be at constant speed or variable speed or in a pulse mode or other set rules.

The invention relates to a submersible type mixing system based on a water turbine. The submersible type mixing system based on the water turbine comprises a water turbine, a stirring impeller, a pedestal guide rail frame, a water suction pipe, a water pump and a water outlet flexible pipe, wherein the water suction pipe, the water pump and the water outlet flexible pipe is used for supplying water to the water turbine as a source of power and the water supply flow of the water pump is controlled by a regulating valve; the water turbine is installed on the pedestal guide frame and placed under the water; the stirring impeller is connected with a water turbine and is driven by a water turbine; the stirring impeller rotates to produce a thrust of water which pushes the flow of water. The working process of the submersible type mixing system is that the water pump pumps water from the pond to boost the pressure, the flow is controlled by the regulating valve, and enters a micro water turbine through a water inlet flexible pipe. The impeller is driven by the rotation of the water turbine, the installation position and direction of the hydraulic turbine can be controlled by the lifting and adjusting mechanism. The submersible type mixing system adopts a micro water turbine instead of a conventional submersible motor to drive the stirring impeller, thus submersible type mixing system can be adopted to various abominable working conditions, increase the continuous working time and service life of the stirrer are increased and the maintenance cost is reduced.

The invention discloses a wire connector. A conducting structure and a wire patchhole are arranged in a plastic base, and a wire is tightly pressed through a rotating arm. Compared with a traditional wire connector, the wire connector has the advantages that safety is higher, operation is much simpler, meanwhile the number and path of wiring can be combined at will through a specially-made rail, the wire connector is suitable for various working conditions, and good social benefits are provided.

The invention discloses a bidirectional secondary pressure rotary cushion valve. The bidirectional secondary pressure rotary cushion valve comprises a valve body, a main valve core, a valve sleeve, adamper piston, a first pilot valve core, a second pilot valve core, a second elastic part and a third elastic part, wherein the valve body is provided with an oil opening A, an oil opening B and an oil opening T; the main valve core is connected inside the valve body; the valve sleeve is connected with the valve body and forms a first control chamber and a second control chamber with the main valve core; a first elastic part is arranged between the main valve core and the valve sleeve; the damper piston is provided with a shuttle valve component, a first oil charging passage, a second oil charging passage and an oil discharging passage, wherein the first oil charging passage, the second oil charging passage and the oil discharging passage communicates with the shuttle valve component; oneend of the first pilot valve core leans against a first valve sleeve opening; one end of the second pilot valve core leans against a second valve sleeve opening; the second elastic part leans againsta position between the first pilot valve core and the damper piston; and the third elastic part leans against a position between the second pilot valve core and the damper piston. The bidirectional secondary pressure rotary cushion valve disclosed by the invention is small in impact, simpler and more impact in structure, more convenient to machine and lower in cost.

The invention relates to an electrical-control vehicle-mounted capping mechanism device for a hot metal ladle. The electrical-control vehicle-mounted capping mechanism device adopts a motor as a power source and a trolley / cam linkage mechanism as an actuating mechanism to realize horizontal movement and achieve the function of capping / uncapping as required, thereby reducing heat loss of liquid steel and obtaining more economic benefits. The invention realizes safety, reliability and adaptability of the capping mechanism of the hot metal ladle in operation by virtue of the felicitous coordination of all rod group mechanisms. The electrical-control vehicle-mounted capping device comprises three main parts, namely a rail guided trolley mechanism, an electric rod group mechanism and a ladle cap mechanism. The working principle of the electrical-control vehicle-mounted capping mechanism device is that the motor drives the trolley to move to realize the horizontal movement of a ladle cap, and through the combination of an electric push rod-drive cam mechanism and the linkage mechanism, a capping / uncapping action is realized so as to enable the hot metal ladle to be closely covered with the ladle cap. A slotted hole is formed in the ladle cap; and in coordination with the linkage mechanism, the ladle cap still can be closely fitted with the hot metal ladle on the condition that the hot metal ladle expands and sand sticks to the edge of the iron ladle.

The invention discloses a connecting structure of a bulldozer pivot and a bogie frame as well as a bulldozer, belonging to the field of a bulldozer assembly. The connecting structure comprises a pivot 1, a bottom plate 2 and a pivot cylinder 3, wherein one end of the pivot 1 stretches into the pivot cylinder 3; one end of the pivot, which stretches into the pivot cylinder 3, is connected with the bottom plate 2 in the pivot cylinder 3; the pivot cylinder 3 is internally provided with an annular bulge for limiting the bottom plate 2 to move along the direction of the pivot 1; a disc-shaped spring is arranged between the bottom plate 2 and the annular bulge of the pivot cylinder 3; the disc-shaped spring is sleeved on the pivot 1; the shape of an outer ring of the disc-shaped spring is matched with the inner shape of the pivot cylinder 3; and the shape of the disc-shaped spring is matched with the shape of the pivot 1. The technical scheme has the beneficial effects that a buffering manner of the disc-shaped spring is utilized so that the abrasion of repeated movement is avoided and a better buffering performance is provided; and the disc-shaped springs with different characteristic curves are adopted and the same disc-shaped spring adopts different combination manners, so that the size of a buffering force and the compression deformation amount are changed to adapt to different types and working conditions.

The invention provides a jacket platform rod stress measurement sensor system which comprises multiple strain sensors arranged on the same circumference at intervals and a sensor connecting base. The invention further provides a corresponding measurement method. The sensors are combined for use, measured stress values of the surface of a rod are calculated to be the average stress and strain borne by the rod actually. The average value of the whole stress and strain of the rod can be accurately acquired, operation is simple, the system is suitable for complex work conditions and working underwater for a long time under the complex sea condition, the sensors can be conveniently located and installed on the base and can be protected so as to be suitable for working under the sea surface for a long time, the sensors are high-accuracy optical fiber sensors, and signals are convenient to collect and process.

The invention relates to a high-temperature infrared radiation glaze and a preparation method thereof. The high-temperature infrared radiation glaze is characterized by comprising the following main constituent components in percentage by weight: 5-40% of glass flake, 10-17% of frit, 17-30% of chromium sesquioxide, 1-2% of calcium fluoride, 6-23% of base enamel, 7-12% of cordierite, 5-10% of high-emissivity material, and 0.4-2.0% of emulsus nanometer aluminium sesquioxide, wherein the sum of the glass flake and the frit is 22-50%. The high-temperature infrared radiation glaze disclosed by theinvention has a good suspension property and a good opacifying effect, a glaze layer with the advantages of smooth surface, high uniformity, high mechanical strength and good thermal-shock resistancecan be formed on the surface of a matrix by only spraying or coating the glaze once, and the formed glaze layer is easy to sinter and difficult in falling; and the high-temperature infrared radiationglaze has the long-term use temperature capable of reaching 1050 DEG C and the normal total emissivity of 0.87-0.92 in a total infrared band of 2.5-20mum, can be applied to metal heating substrates such as heat-resistant steel and the like in various heating and drying equipment, and has a wide application range.

The invention discloses a lapping repair method of a main cable wire of a suspension bridge. The method comprises the steps as follows: 1), a dynamometer is used for measuring wire tension of the main cable wire before repair; 2), a corroded section of the main cable wire is cut, so that two opening ends are formed; 3), one end of the new wire is in meshing connection with one of the opening ends through a first connecting piece, the other end of the new wire is in meshing connection with a second connecting piece, and the other opening end is in meshing connection with a third connecting piece; 4), a fourth connecting piece with internal threads in two ends is in threaded connection with the second connecting piece and the third connecting piece respectively, wherein the internal threads in two ends of the fourth connecting piece rotate reversely; and 5), the fourth connecting piece is rotated, so that the fourth connecting piece draws or loosens the second connecting piece and the third connecting piece respectively, and lapping repair of the main cable wire is realized. The invention further discloses a lapping component adopting the method. According to the lapping repair method and the lapping component, the corroded main cable wire can be repaired conveniently and rapidly, and the tension of the main cable wire can be adjusted easily.

The invention discloses a plug cover drilling fixture, and belongs to the field of fixtures. The plug cover drilling fixture comprises a base plate provided with movable support legs at four corners; the base plate is provided with drill bit passing holes corresponding to plug cover hole positions; a plug cover clamping device is mounted below the base plate, and includes a plug cover limiting plate fixedly mounted below the base plate; the plug cover limiting plate is provided with an annular projection matched with a plug cover annular groove; the plug cover clamping device further includes a plug cover pressing plate capable of bonding with the whole surface of the back surface of a plug cover; and the plug cover pressing plate is also provided with drill bit passing holes corresponding to the plug cover hole positions. The novel plug cover drilling fixture can prevent deformation of the plug cover in the drilling process, guarantees no influence on flatness of the end surface of the plug cover, and improves the quality of the plug cover.

The invention discloses a multi-electrode overturning switching type grinding electric resistance welding robot complete machine. The multi-electrode overturning switching type grinding electric resistance welding robot complete machine comprises a machine tool, a conveying supporting mechanism, a mechanical arm and a grinding electric resistance welding electrode tip. The grinding electric resistance welding electrode tip comprises an overturning frame and a switching base, the overturning frame is rotationally arranged on the switching base and provided with two ratchet wheels and welding electrodes, the number of ratchets of the ratchet wheels is twice that of the welding electrodes, the switching base is provided with two floating pressing frames, and pressing springs are arranged between the floating pressing frames and the switching base. The switching base is provided with a first pawl mechanism, the first pawl mechanism meshes with the ratchet wheels and hinged to the floatingpressing frames, a second pawl mechanism is arranged on the rear wall of the right side of the switching base, and the second pawl mechanism meshes with the ratchet wheel on the same side and hinged to the floating pressing frame on the same side. Welding work and mechanical operation of multiple specifications are achieved, the welding efficiency is improved, the cost is reduced, the working condition requirement for dense arrangement of multi-specification gradual change welding spots is met, and the welding quality is uniform.

The invention discloses a radiator with fins capable of being opened and closed in a self-adaptive mode along with temperature. The radiator comprises a base and a heat dissipation assembly, wherein aplurality of mounting grooves are formed in the base, each mounting groove is internally provided with a set of heat dissipation assembly, each heat dissipation assembly comprises a shape memory alloy sheet and a heat dissipation fin, the shape memory alloy sheets are tightly attached to the heat dissipation fins, the roots of the shape memory alloy sheets and the roots of the heat dissipation fins are jointly fixed into the mounting grooves, and the shape memory alloy sheet deforms along with temperature change to drive the heat dissipation fin to move. According to the invention, a heat source is arranged on the bottom face of the base, the base absorbs the heat of the heat source and starts to be heated, the shape memory alloy sheet deforms into a shape corresponding to the temperaturealong with the temperature rise, and the shape memory alloy sheet drives the heat dissipation fin to be gradually unfolded along with the temperature rise; and compared with the traditional straightfin radiator, the radiator of the invention has the following characteristics that the opening and closing angles of the heat dissipation fins can be changed along with the temperature, and the posture of the radiator is automatically adjusted according to the heat dissipation requirements at different moments so as to meet the heat dissipation requirements.

The invention discloses an environment-friendly coal-loading and smoke-guiding integrated vehicle and an operation method thereof. The environment-friendly coal-loading and smoke-guiding integrated vehicle comprises a steel structure platform, a walking device, a coal hopper device, a weighing system, a spiral feeding device, a cab, an electrical chamber, a hydraulic chamber, a lubricating system,a hydraulic system, a U-shaped tube device I, a cover uncovering device, a furnace seat cleaning device, a furnace cover cleaning device, a cover uncovering device, a guide sleeve device, a water supply system, a gate plate device, a U-shaped tube device II, an air conditioning system, a sliding contactor device and an electrical system. Generally, characteristics of a top-loading and tamping dual-purpose coke oven are combined, and the novel technology of the environment-friendly coal-loading and smoke-guiding integrated vehicle is developed, and two functions of a top-loading coke oven coalloading vehicle and a tamping coke oven gas guiding vehicle can be achieved. A production process of coke can be timely adjusted according to the change of the coke market and coking coal resources,and rapid switching of the two functions can be realized. The environment-friendly coal-loading and smoke-guiding integrated vehicle not only can be used for loading coal in a top loading process, butalso can be used for guiding smoke in a tamping process, smokeless coal loading can be realized, and production efficiency and economic benefits of enterprises can be improved.

The invention discloses a high-speed centrifugal pump with a self-circulation system for a conveying medium. The high-speed centrifugal pump comprises an inducing wheel (1), a centrifugal impeller (2), a pump shell (3), a rear opening ring (4), a general flat key (6), a bearing (7), an oil inlet pipe (8), a bearing chamber (9), an injection ring (10), a spline (11), a mechanical sealing assembly (12), a throttle ring (15), a shaft (16) and an oil return pipe (17), wherein the inducing wheel (1) is connected with the shaft (16) through a shaft-end thread, and the centrifugal impeller (2) is connected with the shaft (16) through the general flat key (6), so that a rotor component is formed; the pump shell (3) is connected with the bearing chamber (9) through a cylinder-head hexagon socket screw (5); the mechanical sealing assembly (12) is connected with the bearing chamber (9); and the self-circulation system for the conveying medium is composed of the pump shell (3), the rear opening ring (4), the oil inlet pipe (8), the bearing chamber (9), the mechanical sealing assembly (12), the oil return pipe (17) and a pump inlet.

The invention belongs to the technical field of pipeline installation, and particularly relates to a variable-diameter half joint. The variable-diameter half joint comprises two half-ring-shaped shells, wherein the two half-ring-shaped shells are combined to form a tubular shell, the diameter of one end of the tubular shell is larger than that of the other end of the tubular shell so that the tubular shell can be clamped at the position where two pipelines with different diameters are connected, and sealing gaskets are arranged at the joint of the two half-ring-shaped shells and between pipe orifices at the two ends of the tubular shell and the outer wall of each pipeline. The diameters of the two ends of the half joint change along with the change of the diameters of the pipelines and are designed independently to form the variable-diameter half joint, and the variable-diameter half joint can be used for blocking variable-diameter pipelines to meet actual working condition requirements.

The invention discloses a spraying coating for an aluminum-plated silicon wire sink roller and a preparation method thereof. The preparation method is mainly characterized in that a layer of coating with the relatively high hardness, the good heat resistance and the good high-temperature-wear resistance is formed on the surface of a sink roller with the base roller material being SUS316L through spraying by using a supersonic spraying method. The sprayed powder is WC-WB-Co-Cr 60 / 30 / 5 / 5, the composition comprises the following components of 3.5-4.5% of C, 1-2% of B, 4-6% of Co, 4-6% of Cr, andthe balance W. Compared with the prior art, the coating and the preparation method have the following advantages that the coating uses the B, so that the coating is good in aluminum slag sticking prevention performance, the coating uses the Cr, so that the coating is good in the wear resistance, the overall coating has good thermal shock resistance, the excellent aluminum liquid corrosion resistance and the excellent high temperature resistance, can resist to the temperature reaching 700 DEG C, and has relatively high powder utilization rate, then the cost can be well saved; and the coating can be well adapted to the working condition requirements of an aluminum-plated silicon production line, so that good protection is provided for the surface of a part, and the service life is prolonged.

The invention discloses a main and auxiliary motor coupling and range-extending driving system, which adopts two motors, wherein one motor serves as a main driving motor, the other motor serves as a generator for a range extender and also is used for being coupled with the main driving motor to take part in the driving operation (hereafter called auxiliary motor), one end of the output shaft of the auxiliary motor is connected to an engine by a clutch while the other end of the output shaft of the auxiliary motor is placed opposite to the output shaft of the main driving motor, and coaxially inserted into the coupler of a reducer; when in driving, the engine is separated from the auxiliary motor by the clutch, and meanwhile combine with the coupler in the reducer, thus achieving the main and auxiliary motor coupling driving; when a vehicle has small requirement on the power, the auxiliary motor can be idle or compatible for generating electricity; the above components are integrated into a machine, a plurality of driving modes, including single motor independent driving when in small power, double motor coupling driving when in large power, engine and main and auxiliary motor combined driving when in extra large load and range-extending generation driving when a battery is lack of power can be obtained under the network control of the whole vehicle; the system includes the engine, the clutch, the auxiliary motor, the reducer, the main driving motor, a generation unit controller and a double-motor controller.

The invention relates to a supercritical organic Rankine dual cycle waste heat recycling system and belongs to the field a common heat exchange. The system comprises a medium temperature overheater, a medium temperature expander, a medium temperature condenser, a medium temperature compression pump, a medium temperature steam generator, a medium temperature expander crankshaft, a medium temperature output power device, a low temperature overheater, a low temperature expander, a low temperature condenser, a low temperature compression pump, a low temperature steam generator, a low temperature expander crankshaft, a low temperature output power device, an exhaust shunt valve, a low temperature shunt valve and so on. The connection of the elements is as follows: the medium temperature steam generator, the medium temperature overheater, the medium temperature expander, the medium temperature condenser and the medium temperature compression pump are connected in turn to form a loop to forma medium Rankine cycle; and the low temperature overheater, the low temperature expander, the low temperature condenser, the low temperature compression pump, the low temperature shunt valve and the low temperature steam generator are connected in turn to form a loop to form a low temperature Rankine cycle. The system is suitable to be used on road automotive engines which are variable in operating conditions and diversified in energy states for recycling waste heat.

The invention discloses a loader variable multi-stage power control module which comprises a first shuttle valve set, a second shuttle valve set, a reversing valve and a variable pump LS pressure control valve. The first shuttle valve set transmits pilot oil pressure to the hydraulic operated reversing valve through an opening X5 and an opening X6. An opening X4 of the second shuttle valve set is connected with pilot control pressure, and the second shuttle valve set outputs the maximum value in pilot pressure oil of the opening X5, the opening X6 and the opening X4 through an opening X7. A pressure control valve communicates with a pump opening LS through a hydraulic operated reversing valve opening LS2. An opening T of the variable pump LS pressure control valve is connected with an oil tank. The invention further discloses a loader variable multi-stage power control hydraulic system with the multi-stage power control module. According to different execution mechanisms of the work hydraulic system, the pressure corresponding to the work hydraulic system is set, that is, different variable pump LS overflow pressures are set, the torque consumed by the whole hydraulic system is adjusted in good time, and then the effect of high efficiency and energy saving of the whole machine is achieved.

The invention belongs to the technical field of pipe installation, and particularly relates to a variable-diameter type Huff section shell. The variable-diameter type Huff section shell comprises two semi-ring casings, wherein the two semi-ring casings are clamped to constitute a pipe-like casing, and the diameter of one end of the pipe-like casing is larger than that of the other end, so that the pipe-like casing can be clamped at the joint of two pipes with different diameters. The diameters of two ends of a Huff section are independently designed according to change of the diameters of the pipes, and the variable-diameter type Huff section shell is formed and can be used for blocking variable-diameter pipes so as to meet requirements of actual working conditions.