149results about How to "Optimize structure layout" patented technology

The invention provides a photovoltaic power station design system and method based on ecological collaborative optimization, and relates to the technical field of data processing. The system comprises an initial configuration module which is used for generating an initial layout structure of a photovoltaic module, performing energy-saving and consumption-reducing calculation and economic analysis according to generating capacity data, and obtaining initial energy-saving and consumption-reducing data and initial economic analysis data; the secondary optimization module is used for optimizing the parameters of the photovoltaic module based on the economical efficiency analysis data and determining energy-saving and consumption-reducing data and economical efficiency analysis data through the generating capacity optimization data; the ecological evaluation module is used for determining ecological benefit data of the photovoltaic power station according to the ecological influence parameters; and the collaborative optimization module is used for setting a power generation income weight and an ecological benefit weight so as to optimize the photovoltaic module layout structure and generate a photovoltaic power station design scheme based on ecological collaborative optimization. The method is used for realizing collaborative optimization of power generation benefits and ecological benefits of the photovoltaic power station, so that the power station gives consideration to ecological protection while improving the power generation efficiency.

The steering angle module comprises a wheel mechanism, the wheel mechanism comprises a hub motor and a wheel assembly in transmission connection with the hub motor, the hub motor comprises a stator and a rotor arranged on the periphery of the stator, and the wheel assembly is fixedly connected with the rotor; the brake mechanism comprises an annular brake disc fixedly connected with the rotor and a brake caliper fixedly connected with the stator; the steering mechanism comprises a steering knuckle and a steering assembly, the lower portion of the steering knuckle is fixed to the stator, the upper end of the steering knuckle extends to the axial outer side of the wheel assembly and is in transmission connection with the steering assembly, and an included angle is formed between the steering axis of the steering assembly and the vertical direction; the suspension mechanism comprises an upper swing arm and a lower swing arm, one end of the upper swing arm is rotationally connected with the frame, the other end of the upper swing arm is spherically hinged to the upper end of the steering assembly, and one end of the lower swing arm is rotationally connected with the frame, and the other end of the lower swing arm is spherically hinged to the steering knuckle. According to the steering angle module and the steering system with the steering angle module, the flexibility of the vehicle can be improved, and the high-speed steering running stability and safety of the vehicle are improved.

The utility model belongs to the technical field of engineering, and particularly provides a multi-stage energy dissipation channel structure suitable for abrupt slope terrains, which comprises a multi-stage energy dissipation unit, an outlet apron and a reinforced gabion which are sequentially connected from top to bottom. Each stage of energy dissipation unit comprises an abrupt slope and a stilling pool, and the lower end of the abrupt slope is connected with the stilling pool. However, energy formed by overhigh height difference is concentrated at the tail end for energy dissipation treatment, and the problems of large investment, large occupied area and poor safety often exist. According to the utility model, the difficulty that energy generated by height difference is concentrated at the tail end to be eliminated is avoided, the energy dissipation effect is greatly improved, the safety is better guaranteed, the building scale is reduced, and the investment is reduced.

The invention relates to a sunshade assembly, a glass assembly and a vehicle. The sunshade assembly comprises a mounting seat; the transmission mechanism is movably arranged on the mounting seat; the driving source is arranged on the mounting base, the driving source is arranged on one side, in the first direction of the sunshade assembly, of the transmission mechanism, and the driving source is in transmission connection with the transmission mechanism; the telescopic mechanism is in transmission connection with the transmission mechanism, the transmission mechanism can drive the telescopic mechanism to stretch or retract in the second direction of the sunshade assembly, and the second direction intersects with the first direction; and the sunshade curtain is connected with the telescopic mechanism and can be unfolded along with the extension of the telescopic mechanism or retracted along with the contraction of the telescopic mechanism. The sunshade curtain is unfolded to shield the surface of the glass, so that the purpose of preventing sunlight from penetrating through the glass to enter the vehicle is achieved; and the sunshade curtain is recovered and exposes the glass again, so that the normal use of the vehicle is not influenced.

The invention relates to the technical field of groundwater quality monitoring, in particular to an improved regional groundwater quality monitoring network design method and system, and the method comprises the following steps: obtaining a groundwater sample of a region as a groundwater quality test sample; performing test analysis on the groundwater quality based on the test sample to obtain groundwater quality information of the region; constructing an underground water quality monitoring network evaluation model of the region according to the underground water quality information; analyzing the groundwater quality monitoring network according to the groundwater quality monitoring network evaluation model to obtain a model evaluation result; and performing optimization design on the underground water quality monitoring network of the region by using the model evaluation result. The underground water quality information is obtained through test analysis of the underground water sample, then the underground water quality monitoring network evaluation model is constructed to optimize the underground water quality monitoring network, the monitoring efficiency of the underground water quality is improved, and scientific management of the underground water is achieved.

The utility model relates to a piston compressor which comprises a power assembly and a compression assembly. The power assembly comprises a power mechanism, an output shaft, a driving wheel and a driven wheel, the output shaft penetrates through the driven wheel, the driving wheel is in transmission connection with the driven wheel, and the power mechanism is used for driving the driving wheel to rotate so as to drive the driven wheel to rotate, so that the driven wheel drives the output shaft to rotate around the axis of the output shaft. The compression assembly comprises a reciprocating body, a rolling piece, a piston and a cylinder body. The piston is arranged in the cylinder body, the rolling piece is embedded in the reciprocating body, and the reciprocating body is connected with the piston. The two ends of the output shaft are each connected with a shaft head, the rolling pieces of the compression assemblies located on the corresponding sides are clamped in the guide grooves of the shaft heads, so that the shaft heads are in linkage connection with the corresponding reciprocating bodies, and when the shaft heads rotate to enable the rolling pieces to move along the guide grooves, the reciprocating bodies drive the pistons to conduct reciprocating compression in the cylinder bodies. According to the scheme, the power mechanism drives the driving wheel to drive the driven wheel to rotate, the connecting structure is simplified, and simple and reliable transmission of the power mechanism is achieved.

The invention discloses a method for estimating the oil temperature of an oil cooling motor through an electronic oil pump. The method comprises the following steps that S1, signals are obtained, specifically, an electronic oil pump rotating speed signal and an electronic oil pump torque current signal are obtained; s2, filtering the rotating speed of the electronic oil pump: performing sliding mean filtering processing on the obtained rotating speed of the electronic oil pump; s3, filtering the torque current of the electronic oil pump: carrying out sliding mean filtering processing on the obtained torque current of the electronic oil pump; s4, calculating the oil temperature: calculating the oil temperature according to the rotating speed and the torque current of the electronic oil pump after filtering treatment in S2 and S3; s5, correcting the oil temperature: correcting the oil temperature calculated in the step S4; s6, oil temperature filtering, wherein filtering processing is conducted on the oil temperature corrected in the S5; and S7, outputting the oil temperature: outputting the oil temperature filtered in the step S6. The overall structure layout can be optimized, and the economic cost can be reduced.

The utility model relates to the technical field of motors, and particularly discloses a double-encoder, a robot joint module and a robot, and the double-encoder comprises a chip detection module, a first code disc and a second code disc, the first code disc, the chip detection module and the second code disc are distributed at intervals and are parallel to one another; and the chip detection module is used for detecting the movement of the first code disc and the movement of the second code disc, so that the first code disc and the second code disc share the chip detection module. According to the robot joint module, the detection chips of the two encoders are integrated on the same PCB, so that the positioning and assembling difficulty is reduced, the assembling precision is greatly improved, and the size of the whole robot joint module is reduced.

The utility model discloses a high-voltage diode tube shell structure, which comprises a tube shell, an insulating substrate is arranged at one end of the tube shell, a plurality of inner electrode plates which are arranged at intervals and are packaged on the insulating substrate in a surface-mounted manner are further arranged in the tube shell, and a plurality of outer electrode plates are packaged on one side, far away from the inner electrode plates, of the insulating substrate in a surface-mounted manner. The insulating substrate is also provided with a plurality of conductive through holes into which electric conductors are inserted; and the inner electrode plates and the outer electrode plates are electrically connected through the electric conductors. According to the high-voltage diode shell structure provided by the utility model, on the basis of the traditional surface-mounted packaging, the voltage withstanding design of the insulating substrate is matched, one end of the insulating substrate is provided with the plurality of inner electrode slices which are arranged at intervals, and the other end of the insulating substrate is provided with the plurality of conductive through holes which are communicated with the inner electrode slices and the outer electrode slices, so that the electrodes are led out; according to the utility model, the arrangement structure of the internal electrodes is optimized, the insulating and voltage-withstanding capability of the tube shell is effectively improved, compared with the existing product, the volume of the product is smaller, the low-pressure capability of the product is improved, and the tube shell structure with small volume and high voltage withstanding is realized.

The utility model relates to the technical field of breathing machine fans, in particular to a fan volute structure for a breathing machine. The volute structure comprises an outer shell, a driving mechanism and a control part, the outer shell comprises an upper shell body and a lower shell body which are in butt joint, an air inlet is formed in the upper shell body, the upper shell body and the lower shell body are in butt joint, an air outlet is formed in one end of the outer shell body, an air cavity for communicating the air inlet and the air outlet is formed in the outer shell body, and the upper shell body is arranged in a concentric circle; the lower shell is not arranged in a concentric circle; the driving mechanism comprises a motor shell, a driving assembly, a fan blade piece and a first lower end cover, one end of the motor shell penetrates through the lower shell, the driving assembly is located in the motor shell, the rotating shaft is exposed out of the motor shell and connected with the fan blade piece, the fan blade piece is located in the air cavity, and the first lower end cover abuts against the motor shell and is connected with the lower shell; the control piece is contained in the first lower end cover, electrically connected with the driving assembly and externally connected with a power source. Efficient airflow conduction can be achieved, and the noise of the fan can be reduced.

The invention relates to the technical field of high-speed engine pre-cooling heat exchangers, in particular to an air inlet pre-cooling heat exchanger and splitter plate integrated structure and an aero-engine, and the air inlet pre-cooling heat exchanger and splitter plate integrated structure comprises a pre-cooling heat exchanger, a splitter plate and a connecting piece; the pre-cooling heat exchanger and the splitter plate are used for being installed in the air inlet channel. A partition piece is formed in the air inlet channel and divides the air inlet channel into a stamping channel and a turbine channel. The precooling heat exchanger and the splitter plate are rotationally connected with the connecting piece; the connecting piece is mounted on the separating piece; the precooling heat exchanger and the splitter plate at least have three working states: in the first working state, the precooling heat exchanger and the splitter plate block the stamping channel; in a second working state, the precooling heat exchanger blocks the turbine channel, and the splitter plate blocks the stamping channel; and in the third working state, the precooling heat exchanger and the splitter plate block the turbine channel. The occupied axial length is shortened, and the structural arrangement of the precooling heat exchanger in the flow channel is facilitated.

This utility model belongs to the field of automotive parts technology, specifically relating to an integrated bracket for the rear instruments of a wide-body mining truck, including a support and fixing assembly, an L-shaped support plate, and two protective lamp covers. Through modular integrated design, this utility model integrates the installation of various sensing devices with the protective function of the rear combination lights of the vehicle. Rigid connections and detachable fixings between components form a high-strength overall frame, effectively preventing equipment from shaking under harsh working conditions and ensuring the stability of the sensing system. Simultaneously, it not only provides a compact and stable mounting base for various instruments but also provides impact protection for the rear combination lights through the protective lamp covers. Ultimately, while ensuring complete functionality, it optimizes the structural layout of the mining truck's rear end, improves overall rigidity, and enhances maintenance convenience.

The invention relates to the technical field of vehicle bodies, in particular to a B-column-free vehicle body structure, a vehicle and an assembling method of the B-column-free vehicle body structure. The B-column-free vehicle body structure comprises a front windshield assembly, a top cover longitudinal beam, a top cover rear assembly, a back door assembly and a lower vehicle body assembly; the front end of the top cover longitudinal beam is fixedly connected with the middle of the upper end of the top cover rear assembly. Gull-wing door installation parts are arranged on the left side and the right side of the middle of the top cover longitudinal beam. The lower end of the front windshield assembly is fixedly lapped with the front part of the lower vehicle body assembly, the lower end of the top cover rear assembly is fixedly lapped with the rear part of the lower vehicle body assembly, and the back door assembly is fixedly connected with the rear sides of the top cover rear assembly and the lower vehicle body assembly; the front windshield assembly, the top cover longitudinal beam, the top cover rear assembly, the back door assembly and the lower automobile body assembly are all aluminum alloy integrally-cast forming parts. The European wing type opening mode of the whole side vehicle door can be met, and on the premise that the performance is met, light-weight and lean design and production of a vehicle body are achieved.

The utility model provides an integral built-in electric control water drain valve, and relates to the technical field of automobile manufacturing. Comprising a shell and a connector body connected to the bottom of the shell in a threaded mode, an electromagnetic valve assembly is arranged at the top in the shell, a valve rod is arranged on the inner side of the connector body, a movable iron core assembly is arranged between the valve rod and the electromagnetic valve assembly, a reset spring is arranged at the top of the movable iron core assembly, and a degaussing piece is arranged at the top end of the reset spring. The bottom of the movable iron core assembly abuts against the top of the valve rod, a sealing valve port is formed in the top of the valve rod, a drainage channel communicated with the sealing valve port is formed in the inner side of the valve rod, a water inlet channel is formed in one side of the shell, and a heater assembly is arranged on the outer side of the valve rod. The water drain valve solves the problems that the internal structure of an existing water drain valve is complex, and the height of an exposed air cylinder is large.

The utility model discloses a machine cover stay wire protection structure and a vehicle, and belongs to the technical field of vehicles. The cover stay wire protection structure comprises a shielding part, the shielding part is used for shielding a cover stay wire, the shielding part is provided with a first mounting end part and a second mounting end part which are oppositely arranged in the front-back direction, and the first mounting end part is provided with a first connecting structure used for being connected with a forecabin flow guide part of a vehicle body; the second mounting end part is provided with a second connecting structure used for being connected with the front part of the side wall of the vehicle body, so that the problem that a machine cover stay wire is easily attacked by the front windshield and the ventilation cover plate is avoided, meanwhile, the machine cover stay wire is prevented from being damaged by external objects, and the overall safety performance is improved; the problem that a thief easily destroys a ventilation cover plate through a tool, so that a machine cover pull wire is exposed, the machine cover pull wire is pulled to open a machine cover, and then parts of a cabin are stolen can be solved.

Provided are an array substrate, a display panel and a display device. The array substrate includes a substrate, an active layer, and multiple metal layers. Multiple pixel circuits are formed in the array substrate. A pixel circuit of the multiple pixel circuits includes a drive transistor, a first initialization transistor, and a second initialization transistor. The multiple metal layers include at least a first metal wire extending in a first direction and a second metal wire extending in a second direction. The first metal wire and the second metal wire are located in different layers. The first initialization transistor is connected between the first metal wire and a gate of the drive transistor and is configured to transmit a first initialization voltage on the first metal wire to the gate of the drive transistor. The second initialization transistor is connected between the second metal wire and a light-emitting element and is configured to transmit a second initialization voltage on the second metal wire to the light-emitting element. The technical solutions provided by the present application can improve the stability of the drive current so as to improve the uniformity of display brightness and display color cast.

The utility model discloses an ice maker which comprises a pre-cooling water path plate, an evaporator and a spraying water path plate, the evaporator comprises an evaporation pipe and a plurality of ice fingers which are fixedly connected with the evaporation pipe and extend downwards, and the evaporation pipe is clamped between the pre-cooling water path plate and the spraying water path plate; the pre-cooling water path plate is provided with a raw water inlet, a pre-cooling cavity communicated with the raw water inlet and a pre-cooling water outlet communicated with the pre-cooling cavity, and the spraying water path plate is provided with a pre-cooling water inlet communicated with the pre-cooling water outlet, a spraying cavity communicated with the pre-cooling water inlet and a spraying opening communicated with the spraying cavity. The spraying waterway plate is further provided with a through hole for the ice finger to penetrate through, and the spraying openings are arranged around the through hole. The interlayer design of the pre-cooling water path plate, the evaporator and the spraying water path plate can protect the evaporator on one hand, and on the other hand, the cooling capacity of the evaporator can be fully utilized to pre-cool raw water, so that the ice making efficiency is improved.

The utility model provides a battery pack air tightness detection tool, which comprises a base and a pressing assembly arranged above the base, an accommodating space for accommodating a battery pack is formed between the base and the pressing assembly, the pressing assembly comprises a support frame arranged on the base in an up-and-down sliding manner, and the support frame is arranged on the base in an up-and-down sliding manner. The supporting frame is arranged on the base, the mounting plates are arranged on the supporting frame and arranged in the length direction of the base at intervals, each mounting plate is in threaded connection with a plurality of screw rods, the screw rods on each mounting plate are arranged in the width direction of the base at intervals, and one end of each screw rod extends into the containing space and can press the top of the battery pack. The battery pack air tightness detection tool is simple in design structure and can adapt to battery packs of different sizes, and a detection tool does not need to be independently designed for each type of battery pack.

The application discloses a C-band tuning-free duplexer and belongs to the technical field of microwave filters. The tuning-free duplexer comprises an upper conductor and a lower conductor, and the upper conductor and the lower conductor are buckled one above the other to form a waveguide cavity. The upper conductor is provided with a combining port in the middle of the top, and the lower conductor is provided with a low-frequency input / output port and a high-frequency input / output port at the bottom. The waveguide cavity from the low-frequency input / output port to the combining port constitutes a low-end filter, and the waveguide cavity from the high-frequency input / output port to the combining port constitutes a high-end filter. The main bodies of the high-end filter and the low-end filter are both a plurality of waveguide resonant cavities arranged along a straight line, the middle positions of each waveguide resonant cavity are provided with cavity loading, and adjacent waveguide resonant cavities are connected through inter-cavity coupling. The tuning-free duplexer adopts a symmetrical structure and a center loading mode, realizes tuning-free assembly, has the characteristics of high power bearing capacity, low transmission loss and excellent signal isolation, and is suitable for a C-band communication system.

The utility model discloses an air-cooled cooking utensil which comprises a pot body and a pot cover covering the pot body, the pot body comprises an outer pot and an inner container arranged in the outer pot, a cooling fan is arranged on the side wall of the pot body, and a food amount mark is arranged on the side wall of the inner container. The food quantity mark comprises a minimum marking line, a maximum marking line and a median line located between the maximum marking line and the minimum marking line, and at least part of the area, projected towards the inner container, of the air outlet of the cooling fan is located above the median line so as to blow air flow to the area above the median line. In the pressure reduction stage of the cooking process, part of air flow blown out by the cooling fan flows towards the area above food in the inner container, so that the air flow preferentially makes contact with the area, above the food materials, of the inner container for cooling, and an original heat transfer route is changed from water vapor in the inner container to the food in the inner container to the side wall of the inner container to cold air. And water vapor in the inner container, the side wall of the inner container and cold air are adjusted, so that a heat transfer path is shortened, the temperature of gas in the inner container can be quickly reduced, and quick pressure relief is realized.

The invention relates to the technical field of psychological counseling, in particular to a psychological catharsis device which comprises a main body frame, a supporting base and a control unit, the supporting base is fixedly connected with the main body frame, a functional module is installed on the main body frame, and a quick-release positioning assembly is installed between the functional module and the main body frame; the quick-release positioning assembly comprises a clamping seat and a plurality of elastic clamping heads; the function module comprises a striking module, a shouting reception module and a pouring conduction module, an elastic limiting assembly, a noise reduction assembly and a force adaptation adjusting assembly are installed in the main body frame, and the control unit is electrically connected with the elastic limiting assembly and the force adaptation adjusting assembly. The control unit is used for controlling the buffering strength and stroke limiting of the elastic limiting assembly according to the releasing force signals collected by the force adaptation adjusting assembly. According to the invention, the user is helped to release negative emotions orderly, and the pertinence and effectiveness of psychological counseling are improved.

The invention belongs to the technical field of medical equipment, and particularly discloses a breathing machine structure which comprises a shell, an upper mounting cavity and a lower mounting cavity which are separated from each other are formed in the shell, and gas circulation channels are formed between the upper mounting cavity and the lower mounting cavity and between the shell and the outside; the circuit structure comprises a power supply module, a mainboard control module and auxiliary function modules, the power supply module is mounted in the lower mounting cavity, the mainboard control module and the auxiliary function modules are mounted in the upper mounting cavity, and at least one auxiliary function module and the mainboard control module are arranged at a preset angle; the ventilation assembly is installed below the mainboard control module, and at least part of the ventilation assembly is installed along the circumferential inner wall of the upper installation cavity. According to the breathing machine, the overall size can be miniaturized, the working heat energy of the circuit assembly board installed in the breathing machine can be dissipated in time, the situation that normal use of the breathing machine is affected due to the fact that local temperature is too high is avoided, and the service life of the breathing machine is prolonged.

The utility model relates to a kind of miniature direct-current brushless motor, including shell, and shell is equipped with accommodating cabin;With the motor rear cover and motor front cover of accommodating cabin seal connection;Stator core is equipped in accommodating cabin;With the rotor assembly matched with stator core;PCBA board is equipped in accommodating cabin;Motor rear cover is equipped with electric connection interface, electric connection interface is operatively electrically connected to PCBA board;The center of motor rear cover is equipped with the stator support shaft extending into accommodating cabin, stator core is fixedly sleeved on stator support shaft;Motor front cover is equipped with insert sealing joint part, insert sealing joint part is used to insert into gear box and form sealed connection with gear box;The output end of the motor shaft of rotor assembly extends outward through insert sealing joint part.It replaces traditional motor.The miniature direct-current brushless motor can effectively solve the problems in the prior art through innovative structural design, improve the performance, reliability and service life of motor in smart home device.

The present application relates to the technical field of PCB control panel, especially to a hot water kettle PCB control panel with integrated overall heat dissipation structure, comprising a PCB substrate, electronic components and a heat dissipation assembly arranged on the PCB substrate corresponding to the positions of the electronic components; the periphery of each electronic component is covered with a heat conduction sleeve; a heat conduction assembly is arranged between each heat conduction sleeve and the heat dissipation assembly, each heat conduction assembly is configured to conduct heat from the heat conduction sleeve to the conduction path on the heat dissipation assembly when the temperature of the heat conduction sleeve is greater than that of the heat dissipation assembly, and to cut off the conduction path when the temperature of the heat conduction sleeve is less than that of the heat dissipation assembly. The present application realizes adaptive adjustment of heat dissipation state, simplifies the structure layout of the control panel, reduces the production cost, effectively solves the heat crosstalk problem between different electronic components, and improves the operation reliability and service life of the hot water kettle PCB control panel.

The application provides a vehicle heat insulation system, a vehicle with the same and a vehicle heat insulation method. The vehicle heat insulation system comprises a battery box connected with a vehicle body, a battery pack arranged in the battery box, and a battery pack upper cover of the battery box; a vehicle body bottom plate connected with the battery pack upper cover, a sealing element arranged between the vehicle body bottom plate and the battery pack upper cover, at least one liquid storage area formed between the sealing element, the vehicle body bottom plate and the battery pack upper cover, and the liquid storage area used for storing cooling liquid; and a liquid supply system comprising at least a conduit and a liquid storage tank, a first end of the conduit in communication with a liquid outlet pipe of the liquid storage tank, and a second end of the conduit in communication with the liquid storage area through the vehicle body bottom plate, the conduit being used for passing the cooling liquid into the liquid storage area to cool and lower the temperature of the battery pack. The liquid storage area is arranged to cool and lower the temperature of the battery in thermal runaway, to avoid the heat of the power battery after ignition from spreading to the vehicle body, and to solve the technical problem of the vehicle accident caused by the battery ignition in the prior art.

The application discloses an integrated aviation hybrid power oil cooling system and an aviation hybrid power aircraft, and belongs to the technical field of aviation hybrid power aircrafts. The integrated aviation hybrid power oil cooling system comprises a fan, a fan flow channel piece with an annular flow channel, an annular radiator, an oil supply and return pump set, a fan motor, a fan motor controller and an oil tank. The axial ends of the fan flow channel piece are connected with the fan and the annular radiator respectively, so that the annular flow channel is axially communicated with the fan and the annular radiator, and then the cooling airflow generated by the fan enters the annular radiator through the annular flow channel. The inner shaft hole of the fan flow channel piece further forms a hub installation space for installation. The fan motor and the oil supply and return pump set are arranged in the hub installation space respectively, two power output ends of the fan motor are connected with the fan and the oil supply and return pump set respectively, the oil tank is arranged in the shaft hole of the annular radiator, and the fan motor controller is connected with the fan flow channel piece. The overall structure of the application is compact and reasonable, the manufacturing and maintenance costs are low, the weight is small, and the utilization rate of the cooling airflow heat dissipation capacity is high.

The utility model discloses a foldable fabric box which comprises a box body, an observation window is fixed to the side wall of the box body, supporting rods are symmetrically fixed to the top end and the bottom end of the inner wall of the box body, sleeves are connected to the outer walls of the supporting rods in a sliding mode, polish rods are rotationally connected to the inner sides of the sleeves, and the inner sides of the polish rods on the two sides are rotationally connected. A groove block is fixed to the outer wall of the polished rod, and a fixing piece is arranged in the groove block. Through the sliding fit design of the polished rod, the sleeve and the supporting rod, convenient folding and rapid unfolding of the box body are achieved, when the box body is unfolded, the polished rod drives the supporting rod to open the top end and the bottom end of the box body, a clamping plate is matched for limiting and fixing the rotating shaft of the polished rod, and a top block is matched for clamping and fixing a groove block, so that the box body has reliable structural stability in the using state; deformation or collapse is effectively avoided, the storage requirement is met, storage, carrying and storage are facilitated, and the space utilization rate and use scene adaptability of the product are greatly improved.

This invention discloses a tree planting and hole-digging device for landscaping projects, belonging to the field of landscaping construction technology. The device includes a base with a plant placement slot on one side and a handle fixed to the other side. Universal wheels are installed at the four corners of the lower end of the base, and a support frame is fixed to one side of the upper end. A drive motor is fixed to the other side of the support frame, and a fixed rod is fixed to the drive end of the drive motor. A connecting structure is provided on the fixed rod, and a ground drill bit is mounted on the connecting structure. This tree planting and hole-digging device achieves an adaptive digging effect, automatically adjusting the rotation and downward movement of the drill bit through the mechanical cooperation of centrifugal force and springs. It simplifies the overall machine structure, effectively reduces the production cost and daily operating cost of the planting and hole-digging equipment, and significantly improves the overall economic efficiency of the equipment.

The present invention discloses a dual-motor two-speed multi-mode hybrid transmission and a speed change method. The transmission includes a housing, a main shaft, a first planetary mechanism, a second planetary mechanism, a first brake, a second brake, a first clutch, a second clutch, a first motor and a second motor. The main shaft is rotatably connected in the housing. The main shaft is used for transmission connection to the output shaft of the engine. Two planetary mechanisms and two motors are used for linkage to realize two pure electric drive modes, two engine direct drive modes, and two continuously variable speed change modes, a total of six drive modes. Through control by two clutches and two brakes, continuous switching of different modes under different road conditions can be realized, greatly improving fuel economy and driving comfort. Because only two planetary mechanisms are used in structure, the structural layout is simpler.

The present invention discloses an engine urea mixer, which belongs to the technical field of engine exhaust post-treatment devices, and solves the problem that there is no mechanical structure inside the existing urea mixer that can promote the mixing of urea and exhaust gas, resulting in poor mixing effect. The mixer includes a sleeve, a mixing tube is vertically inserted in the sleeve, a baffle is provided between the mixing tube and the sleeve to connect the two to separate the sleeve into an air inlet port and an air outlet port, a plurality of vents are provided on the upper periphery of the mixing tube to connect the air inlet port and the air outlet port, and each vent is provided with an inclined plate arranged outwardly on one side, and a spoiler connected to the inner wall of the sleeve is also provided in the sleeve on one side of the air outlet port; the top of the mixing tube is connected to a nozzle seat for installing a nozzle through a cover plate. The mixer of the present invention is applied to exhaust post-treatment, so that the reducing agent and the engine exhaust are fully and evenly mixed, and the structural layout of the diesel engine post-treatment system is reasonably optimized.