59results about How to "Improve transportation convenience" patented technology

The invention discloses an electric drive fracturing semitrailer with dual engines and dual pumps. The electric drive fracturing semitrailer with the dual engines and the dual pumps comprises a semitrailer body, two plunger pumps, two radiators and an electrical control cabinet. The electric drive fracturing semitrailer with the dual engines and the dual pumps is characterized by further comprising two electromotorsand an inverter unit. The plunger pumps, the radiators, the electrical control cabinet, the electromotors and the inverter unit are integrated in the semitrailer body, the inverterunit is arranged on the gooseneck of the semitrailer body, the output end of the inverter unit individually drives the two electromotors, the other ends of the two electromotors are connected with theplunger pumps correspondingly, lubricating oil of the plunger pumps is cooled through the radiators, and local operation of the electric drive fracturing semitrailer with the dual engines and the dual pumps is realized through the electrical control cabinet. The electric drive fracturing semitrailer with the dual engine and the dual pump has the beneficial effects that the electromotors are adopted to drive the plunger pumps through a transmission shaft, the volume is small, and the economic efficiency, energy conservation and environment protection are achieved. The signal pump power of theplunder pumps is improved, design that the dual pumps are driven by the two electromotors is adopted by the whole fracturing device, the output power of the fracturing device is greatly improved, andthe using requirements are better met.

The invention relates to an assembly type container prefabricated house. The assembly type container prefabricated house comprises a frame, a bottom plate, a top plate and wall plates, wherein the frame comprises a bottom border, a top border and upright columns, the bottom border is formed by connecting bottom beams through corner pieces, and the top border and the bottom border are connected by the upright columns through the corner pieces; the bottom beams and top beams are made of a first profile, and the upright columns are made of a second profile; each corner piece comprises a main corner piece body, beam connecting parts formed at two side ends of the main corner piece body and an upright column connecting part formed at the upper end of the main corner piece body, and the beam connecting parts and the upright column connecting part can be inserted into end parts of the first profile and an end part of the second profile respectively and are connected with the first profile and the second profile respectively through fastening connection pieces; the bottom plate is erected on supporting folded walls of the bottom beams of the bottom border, the top plate is mounted on supporting folded walls of the top beams of the top border reversely, the lower ends of the wall plates are supported by the supporting folded walls of the bottom beams of the bottom frame and clamped between the bottom plate and the bottom beams, and the upper ends of the wall plates are connected with the lower parts of the supporting folded walls of the top beams through the fastening connection pieces .

The invention discloses an inserted chassis diagonal-brace structure of a tower crane and belongs to the technical field of the tower crane. The diagonal-brace structure of the tower crane comprises a base section, a chassis section and a diagonal brace, wherein the bottom end of the base section is vertically and fixedly connected to a crossed beam; the bottom end of the chassis section is fixedly connected to the top surface of the base section; the diagonal brace is arranged to be inclined to the crossed beam, the bottom end of the diagonal brace is fixedly connected with the crossed beam, while the top end of the diagonal brace is fixedly connected with the chassis section, a double-lug plate with a U-shaped structure and fixedly connected with the diagonal brace is arranged at the top end of the diagonal brace, and the inner width dimension of the U-shaped structure of the double-lug plate is matched with the width dimension of a main chord; the top end of the diagonal brace is sleeved on the main chord of the chassis section through the double-lug plate, and the top end of the double-lug plate is fixedly connected with the main chord of the chassis section through a connecting piece. The chassis section is reduced in overall structure dimension and strong in transportation convenience, and simultaneously, the stress condition at the connection part is improved and the weld joint quality requirement is effectively reduced. The diagonal-brace structure of the tower crane is simple and is easy to manufacture and low in manufacturing cost.

An image forming device includes a development section provided with a developer carrier adapted to perform development using a liquid developer including a carrier liquid and toner particles, an image carrier adapted to carry an image developed by the development section, an cleaning roller of the image carrier having contact with the image carrier, an cleaning blade of the cleaning roller of the image carrier having contact with the cleaning roller of the image carrier at one of a position on an imaginary line of an intersection between an imaginary plane passing through a center of a rotational axis of the cleaning roller of the image carrier and perpendicular to an imaginary vertical plane and a surface of the cleaning roller of the image carrier and a position lower than the imaginary line in a vertical direction, and an image carrier recovery reservoir adapted to store the liquid developer recovered by the cleaning blade of the cleaning roller of the image carrier.

A solid-liquid separation process, comprising the following steps: A. concentrating an aqueous solution or a mixed solution in water-organic solvents containing soluble solids at a low concentration to give a medium-concentrated mixed solution; B. discharging the medium-concentrated mixed solution into a stirring evaporation kettle (9), and further concentrating same by evaporation to give a high-concentrated mixed solution; and C. controlling the solid content of the high-concentrated mixed solution to ensure that same is discharged out of the stirring evaporation kettle (9) in the liquid form; returning the vapour generated in step B to the multi-effect evaporation system and heating the liquid while the vapour phase is condensing, such that the heat is recovered and the recovery of the solution is ensured. The high-concentrated mixed solution discharged in the liquid form in step C is cooled and solidified.

The invention discloses a solar photovoltaic assembly with a cleaning function. The solar photovoltaic assembly with the cleaning function is characterized in that the upper end of a base is fixedly connected to a vertical column, wherein a guide groove is formed in the upper part of the vertical column, and a sliding block is connected into the guide groove in a sliding manner; the sliding blockis rotatably connected to the upper end of a movable rod; the right end of a worm is fixedly connected to a threaded rod, and the surface of the threaded rod is in thread connection with a sleeve; thesleeve is rotatably connected to the lower end of a connecting rod, and a photovoltaic plate is rotatably connected to the upper end of the connecting rod; a transverse frame is rotatably connected to the left end of the photovoltaic plate; a worm gear is engaged with the upper end of the worm and is rotatably connected to the transverse frame, and the worm gear is concentrically rotated with theleft end of the photovoltaic plate; the worm gear is fixedly connected to a belt wheel; a cleaning brush is fixedly connected to the upper part of a transmission belt. According to the photovoltaic assembly, the movable rod is used for supplying supporting force to the middle part of the vertical column, so that the supporting effect is improved, and the convenience of storing and conveying is ensured; in addition, the rotating threaded rod is capable of driving the sleeve to move leftwards and rightwards, and thus the photovoltaic plate can swing to adjust the inclination angle, and the wormgear is driven to rotate through the worm during angle adjusting, and the rotating worm gear drives the transmission belt to roll to enable the cleaning brush to move to clean the surface of the photovoltaic plate.

The invention provides a testing device for testing a failure mechanism of a contact surface between a testing pile and a grouting soil body. The testing device comprises a loading device and a tubular pile model test box; the loading device comprises a reaction force frame and a loading mechanism, and the loading mechanism arranged on the reaction force frame provides pressure to the tubular pilemodel test box; the tubular pile model test box is mounted on the reaction force frame, and the loading mechanism is arranged on the inner side of the top of the reaction force frame; the tubular pile model test box is detachably arranged in the reaction force frame; the loading mechanism is located above a tubular pile model mounting position of the tubular pile model test box; a displacement detecting device used for detecting vertical movement positions of the tubular pile model is arranged on the inner side of the top of the reaction force frame. The invention also provides a testing method for testing the failure mechanism of the contact surface between the testing pile and the grouting soil body by the testing device. Through the structure and the steps, the testing device is convenient to mount and demount and movable; a pile foundation model test system with accurate loading ensures smooth operation of tests, wherein strength and rigidity of the pile foundation model test system meet the test requirements.

The invention belongs to the technical field of image data acquisition, relates to a movable cultural relic time domain data acquisition platform and an acquisition method thereof, and solves the problem that cultural relic image data acquisition is incomplete. The technical scheme is that the movable cultural relic time domain data acquisition platform comprises a rack, a storage platform, an image acquisition device and a control system, the storage platform is arranged on the rack, the storage platform is used for bearing a to-be-measured object and driving the to-be-measured object to rotate, the image acquisition device is used for performing image acquisition on the to-be-measured object at various angles, and the control system is connected with the storage platform and the image acquisition device. The objective of the invention is to realize accurate copying of texture, texture and dimensional precision of cultural relics through three-dimensional 720-degree data acquisition of the platform for specific objects which cannot be acquired by using a traditional three-dimensional scanning technology, especially vulnerable specific objects, so that the cultural relics not only can meet sensory cognition, but also can be directly used as samples researched by professionals, and the purposes of accurate copying and permanent recording is realized.

The invention discloses a general die for conducting thermite welding on a grounding grid. The general die comprises a die body. The die body is internally provided with a reaction cavity, a flow guiding groove and a fusion cavity from top to bottom. The bottom of the reaction cavity is connected with the flow guiding groove. Gaskets, thermite welding powder and pyrophoric powder can be put into the reaction cavity. The fusion cavity is horizontally formed in the bottom of the flow guiding groove. Fixed storage cavities are formed in the two horizontal sides of the outer surface of the die body correspondingly, wherein the fixed storage cavities communicate with the fusion cavity. The fixed storage cavities are each internally provided with a detachable die block. The diameter of each dieblock is the same as the inner diameter of the corresponding fixed storage cavity. An inner hole is formed in the end face of each die block in a penetrating manner, wherein each inner hole can allowa conductor needing to be welded to penetrate. Meanwhile, the die body is provided with an ignition opening and a shielding cover, wherein the shielding cover is matched with a cover body to be used.Smoke and dust generated in the burning process and inhaled by workers when ignition is conducted are reduced. When the general die is used for outdoor construction, the single die and the die blockswith different holes diameters of the inner holes are only needed for the conductors which are of the same specification and different sizes and need to be welded; and the effect that the conductors which are of the same specification and different sizes and need to be welded are welded through the same die is achieved.

The invention discloses a thermit welding die assembly for grinding nets. The thermit welding die assembly comprises a die sleeve, a cylindrical upper die core and a cylindrical lower die core. The die sleeve comprises two half dies, the two half dies are of symmetric structures, a cylindrical die cavity can be formed after the two half dies are closed, the upper die core and the lower die core can be fixed by the aid of the cylindrical die cavity, an inner cavity of the upper die core is a conical reaction cavity with an upward large opening and a downward small opening, the lower die core comprises a flow guide groove and a plurality of fusion welding cavities, the multiple fusion welding cavities are communicated with one another in a clamp manner via the flow guide groove which is usedas a symmetric shaft, and inner cavities of the upper die core and the lower die core are opposite to each other to form a welding cavity when the two half dies are in die closed states. The thermitwelding die assembly has the advantages that the problem of requirements on special thermit welding dies for connectors in different forms can be solved by the aid of the thermit welding die assembly;connectors which have different specifications and different sizes and are in optional forms can be particularly welded by the single die sleeve and the different die cores during field construction,and accordingly the transport convenience can be improved; only the die cores are made of three-immersing and four-baking graphite materials, and accordingly the thermit welding cost can be lowered to a great extent.

The invention relates to an autonomous control system for a crane. An amplitude-variable control mechanism comprises an amplitude-variable oil cylinder, an amplitude-variable balancing valve and an amplitude-variable reversing valve; a rotary control mechanism comprises a rotary pump, an oil supplementing pump, a rotary motor, a rotary reversing valve, a rotary brake and a brake reversing valve; an amplitude-variable ball valve is arranged between the oil inlet of the amplitude-variable balancing valve and the oil outlet of the amplitude-variable reversing valve, a brake ball valve is arranged between the oil outlet of the brake reversing valve and the oil inlet of the rotary brake, and the bypass of the rotary reversing valve is connected with a rotary ball valve; when the crane is in an assisted transportation state, the amplitude-variable ball valve is in a closed state, the rotary brake is in an opening state, the brake ball valve is a closed state and the rotary ball valve is in an opening state. The autonomous control system can realize automatic rotation of a rotary table and autonomous floating of a suspension arm according to the road condition when the crane assists a traveling bogie for transportation, so as to be adaptive to the up-and-down road surface and large-angle turning, ensure the assisted transportation safety of the crane and improve the transportation convenience of the crane.

The invention discloses an advertising transport vehicle having mechanical telescoping lock catch pressure plates. The transport vehicle includes a transport vehicle body, pressure plate assemblies, athrust handle and mechanical lock catch equipment; one side on the surface inside the transport vehicle body is fixedly connected to one sides of at least three rotating assemblies, and the other side on the surface inside the transport vehicle body is fixedly connected to at least three buckling pedestals; the other sides of the rotating assemblies are fixedly connected to one ends of the pressure plate assemblies; the other ends of the pressure plate assemblies are in buckling connection with the upper surfaces of the buckling pedestals; the surfaces on one ends at the upper parts of the buckling pedestals are connected to one ends of buckling plates through rollers; the other ends of the buckling plates are in buckling connection with the surfaces on the other ends at the upper parts of the buckling pedestals; the surface inside the transport vehicle body is connected to the two ends of the mechanical lock catch equipment through bolts; the two ends of the mechanical lock catch equipment are fixedly connected to the bottom end of the thrust handle; and the thrust surface at the upper part of the thrust handle is connected to an anti-abrasion rubber pad.

The invention relates to the technical field of pharmacy and particularly relates to a pesticide niclosamide ethanolamine self-emulsifying micro-emulsion for killing oncomelania and a preparation method thereof. The niclosamide ethanolamine self-emulsifying micro-emulsion provided by the invention is prepared from niclosamide ethanolamine, an oil phase, an emulsifying agent and an auxiliary emulsifying agent, wherein the mass ratio of all the components is that the niclosamide ethanolamine to the oil phase to the emulsifying agent to the auxiliary emulsifying agent is 1 to (1-15) to (5-30) to (5-20). The niclosamide ethanolamine self-emulsifying micro-emulsion has the following beneficial effects: 1, the dissolving rate of the pesticide is greatly improved and the dispersity of the pesticide in a water body system is improved; 2, the product does not contain aromatic series organic solvents, and organic solvents which seriously pollute the environments, such as N-methyl pyrrolidone, dimethylformamide and cyclohexanone, the content of effective components is high and the transportation convenience is improved; and 3, the formula and the method are simple and feasible, special equipment is not needed and the large-scale industrial production is easy to realize.

The invention relates to the technical field of fluid conveying, in particular to a gas-liquid separation conveying pump. The gas-liquid separation conveying pump comprises a tubular shell, an exhaust pipe capable of rotating, a helical blade, a volute and a straight blade. The volute is connected to the tail end of the tubular shell and communicates with the tubular shell. The head end of the tubular shell is provided with an input opening. The exhaust pipe is arranged between the tubular shell and the volute in the longitudinal direction. The side wall of the exhaust pipe is provided with an air inlet. The tail end of the exhaust pipe is provided with an exhaust outlet communicating with the air inlet. The exhaust outlet is formed in the outer side of the volute. The helical blade is installed on the exhaust pipe and located in the tubular shell. The straight blade is installed on the exhaust pipe and located in the tubular shell. The radial direction of the volute is provided with a liquid discharge outlet used for discharging liquid. Through application of the gas-liquid separation conveying pump, gas-liquid separation is completed during conveying, thus application convenience is improved significantly, and the cost and structure complexity are reduced.

The invention discloses a cooling mechanism of an injection mold. The cooling mechanism comprises a bottom plate, a fixed mold block is fixedly connected to the top of the bottom plate, a movable moldblock is arranged on the top of the fixed mold block, an injection molding hole is formed in the top of the movable mold block, and a first water cooling groove is formed in the movable mold block. Through the bottom plate, the fixed mold block, the movable mold block, the injection molding hole, the first water cooling groove, a second water cooling groove, a containing groove, an air cylinder,an ejector rod, a water cooling and air cooling mixed cooling mechanism, a fixed block, a supporting frame and an air cooling mechanism, the problems that a modern injection mold often uses water forcooling a mold cavity in order to quicken the forming speed in the mold cavity, the manner easily causes residue of a large amount of water, and the service life of the injection mold is affected aresolved, meanwhile, the problem that the single cooling manner causes slow cooling speed is solved, and the cooling mechanism of the injection mold has the advantage of inner and outer joint cooling, and the improves the cooling speed.

The invention belongs to the technical field of advertisement lamp boxes and discloses a modular advertisement lamp box. The modular advertisement lamp box includes an advertisement lamp box outer frame, a lamp box back plate and a light source plate; the advertisement lamp box outer frame includes multiple brackets and multiple insertion connectors, the inner sides of the brackets are all provided with first guiding grooves, and the two ends of each insertion connector are both matched with the corresponding first guiding grooves; second guiding grooves are formed in the outer sides of the two ends of the lamp box back plate, and the lamp box back plate is in matching connection with the rear side of the advertisement lamp box outer frame through the second guiding grooves in both ends ofthe lamp box back plate. The lamp box is integrally formed by assembling standard sectional materials, and great convenience is provided for installation, dismantling, maintenance, conveying and transportation.

The invention provides an intelligent unmanned logistics transportation method and system based on an optimization efficiency evaluation algorithm, and the method comprises the following steps: enabling the system to control a plurality of intelligent unmanned trolleys to convey goods on an elevated channel according to a plurality of inputted departure and destination planning paths; enabling the logistics transportation system modeling module to perform data analysis and modeling according to the data information of the plurality of intelligent unmanned trolleys received and arranged by the big data acquisition and arrangement module, and send the data information to the logistics transportation elevated passage control module to calculate average traffic delay time; and building a nonlinear multi-dimensional constraint global optimization algorithm and an optimization efficiency evaluation algorithm to optimize the walking route of each intelligent unmanned trolley on the elevated passage and the required traffic condition, so that the logistics transportation time for arriving at a plurality of destinations is shortened. According to the system and the method provided by the invention, after the logistics transportation is optimized in a targeted manner according to the total travel time under different traffic conditions, the traffic convenience of cities and towns under emergency conditions can be improved.

The invention provides a construction method for solving cross construction of horseshoe-shaped tunnels, which is used for carrying out mechanical calculation on vertical legs of a trolley portal frame and comprises the following steps: 1) drawing a stress diagram, and finding out or reckoning a calculation formula that the maximum bending moment appears at a fixed end and a calculation formula that the maximum deflection appears at a free end; 2) calculating the sum of the side pressure of the poured concrete and the side pressure of vibration during construction; 3) measuring the effective height and the vertical leg spacing of the trolley vertical legs; 4) calculating inertia moment data, and normalizing the surface load of the trolley into the linear load of the vertical legs; 5) checking the maximum deflection specification of the steel structure, and checking the deformation specification of the hydraulic concrete formwork; and 6) calculating the deflection of the free end of thevertical leg, and comparing the deflection with data in the specification to determine whether an end cross arm is needed or not. According to the method, maximum value estimation is carried out on the deflection of the ends of the vertical legs of the portal frame in a mechanical mode, horizontal cross braces of the vertical legs are removed on the basis, and convenience of a construction channel is guaranteed.

The invention discloses a convenient medium-sized railway station arrangement structure which comprises a first overhead layer (1) and a second overhead layer (2) which are arranged side by side; a through passenger flow channel (3) is formed among the first overhead layer (1), the second overhead layer (2) and the ground; a main station building (4) is arranged on the first overhead layer (1); a railway station yard (5) is arranged on the second overhead layer (2); and the passenger flow channel (3) is respectively perpendicular to the main station building (4) and the railway station yard (5). The convenient medium-sized railway station arrangement structure has the characteristics of being small in occupied space, convenient for passengers to transfer and convenient for transportation.

The invention relates to the technical field of pharmacy and particularly relates to a pesticide niclosamide ethanolamine self-emulsifying micro-emulsion for killing oncomelania and a preparation method thereof. The niclosamide ethanolamine self-emulsifying micro-emulsion provided by the invention is prepared from niclosamide ethanolamine, an oil phase, an emulsifying agent and an auxiliary emulsifying agent, wherein the mass ratio of all the components is that the niclosamide ethanolamine to the oil phase to the emulsifying agent to the auxiliary emulsifying agent is 1 to (1-15) to (5-30) to (5-20). The niclosamide ethanolamine self-emulsifying micro-emulsion has the following beneficial effects: 1, the dissolving rate of the pesticide is greatly improved and the dispersity of the pesticide in a water body system is improved; 2, the product does not contain aromatic series organic solvents, and organic solvents which seriously pollute the environments, such as N-methyl pyrrolidone, dimethylformamide and cyclohexanone, the content of effective components is high and the transportation convenience is improved; and 3, the formula and the method are simple and feasible, special equipment is not needed and the large-scale industrial production is easy to realize.

The invention relates to an integrated aviation maintenance skill training device. Theintegrated aviation maintenance skill training device comprises a rack and a simulation cabin section assembly, an electric welding training table and a control table which are arranged on the rack, and the simulation cabin section assembly comprises a main cabin section with a supporting beam and an outer cabin section matched with the main cabin section in an overturning mode; the skill training device further comprises a machine part dismounting and mounting training module, a safety dismounting and mounting and fastening training module, an electric connector training module, a circuit measurement training module, a binding training module, a conduit dismounting and mounting module, a leakproofness inspection training module, a guarantee training module and a tool borrowing and returning management module which are arranged on the main cabin section. According to the invention, integrated training of machine part dismounting and mounting, insurance dismounting and mounting, conduit dismounting and mounting, electric connector connection and inspection, guarantee equipment interface connection and electronic component welding is realized, comprehensive training of maintenance skills in multiple aspects is carried out on maintenance personnel, and conditions are created for centralized training of the maintenance personnel; the skill level of maintenance personnel is improved, and the training period is shortened.

The invention relates to a paint spraying device special for indoor decoration. The paint spraying device comprises a base, wherein fixable pulleys are arranged at the bottom of the base; a protectivecover is arranged on the base, and a buffer layer is arranged between the protective cover and an inner cavity; a coating box is arranged in the inner cavity, and a one-way valve is arranged at an outlet at the bottom of the coating box; the one-way valve is connected with a flowmeter, and a liquid level meter is arranged at the top of the coating box; an inlet is formed in the right side of theliquid level meter; a stop valve is arranged at the inlet; a booster pump is connected to an outlet, the booster pump is positioned on a damping plate at the bottom of the inner cavity, the booster pump is connected with a pipeline, and the other end of the pipeline extends to the outer side of the protective cover to be connected with a hose; and a booster chamber is connected to the other end ofthe hose through the fixation of a locking piece, the booster chamber is connected with a spray head device, a connecting device is arranged at the tail end of the spray head device, the connecting device is hung on a fixing device on the protective cover, and the booster pump is connected with a motor. The paint spraying device has convenient use, uniform spraying and high working efficiency.

The invention discloses a leasing system for an electric bicycle, and the system can be used by a user for automatically leasing the electric bicycle. The system mainly comprises a main control unit, at least one vehicle detection device, and one battery exchange device. The main control unit is used for judging the identity of the user, and cooperates with all locking units and detection units in the vehicle detection devices, thereby enabling the user to complete the leasing or returning of a bicycle through proper cooperation. The battery exchange device provides a battery for a user to freely exchange batteries, thereby providing a convenient leasing environment for the user, enabling the user to freely lease a high-performance electric bicycle. Moreover, the system can effectively control and manage the leasing and retuning of the electric bicycle.

The invention belongs to the technical field of polymers, and particularly relates to a high-bulk-density acrylic acid thickening agent, which is characterized in that gel particles are prepared by adopting a reversed-phase suspension polymerization method, and the gel particles are dried and crushed to obtain the high-bulk-density acrylic acid thickening agent. Raw materials in the reversed-phase suspension polymerization reaction comprise an oil phase and a water phase, the water phase contains at least partially neutralized acrylic acid monomers and water-soluble monomers, the oil phase contains oil-soluble monomers, and the water phase and the oil phase are mixed to react in the presence of a cross-linking agent and an initiator. The bulk density of the thickening agent reaches 89g / 100mL, the thickening agent is fine and smooth in appearance and free of wire drawing and balling, it is guaranteed that the thickening agent can have a good thickening effect in a reactive printing and dyeing formula, compared with Carbomer, a post-neutralization process does not need to be added, the technological process is greatly simplified, the production process is simplified, and the cost is effectively reduced.

The invention provides a carriage used for repairing a power transmission line. The power transmission line comprises power transmission towers and power transmission wires between adjacent power transmission towers, the carriage is connected with a carrying rope and a traction rope, other ends of the carrying rope and the traction rope are connected with a terminal mounting bracket, the carriage comprises a traction device and a crawler arranged on the lower end of the traction device, and a walking vehicle is arranged on the carrying rope and the traction rope. By employing the carriage, repairing and mounting demands of the power transmission line in different environments can be satisfied, the transportation convenience is improved, the equipment manufacture and maintenance cost is reduced, and the trafficability and safety of the walking vehicle are improved.

The invention discloses a splicing load carrying rack, comprising an upper box, a lower box and Z-axis connecting pipes, wherein each of the upper box and the lower box comprises four pipe joints, twoX-axis connecting pipes and two Y-axis connecting pipes, Z-axis connecting pipes are vertically arranged between the corresponding pipe joints of the upper and lower boxes, the pipe joints are provided with inserting blocks extending into the X-axis connecting pipes, the Y-axis connecting pipes and the Z-axis connecting pipes correspondingly, each pipe joint is provided with three cylindrical counterbores extending along the length directions of the X-axis connecting pipes, the Y-axis connecting pipes and the Z-axis connecting pipes into the corresponding inserting blocks, and the cylindricalcounterbores are internally provided with screws connected to the corresponding connecting members. In the manner, the splicing load carrying rack has a stable structure and flexible adjustment, minimizes processing steps, reduces requirements on assembly technology, and is convenient for storage and transportation.

The invention relates to a B-pillar-free car door structure, and relates to the technical field of car design and manufacturing. The B-pillar-free vehicle door structure comprises the sliding door and the front door which can be opened at the same time, the opening degree is increased, freight transport is facilitated, the front door B pillar is arranged in the front door, and the sliding door B pillar is arranged in the sliding door; a window frame reinforcing plate is arranged on the side, close to the sliding door, of an inner window frame of the front door, an upper lock reinforcing plate is arranged on the upper portion of the window frame reinforcing plate, a transversely-arranged anti-collision beam is arranged on the lower portion in the front door, a vertically-arranged outer plate supporting plate is arranged between the window frame and the anti-collision beam, and a lower lock reinforcing plate is arranged on the side, close to the sliding door, of the lower side of the anti-collision beam. The upper end of the front door B column is opposite to the window frame reinforcing plate; and the lower end of the front door B column is opposite to the lower lock reinforcing plate. According to the B-pillar-free vehicle door structure, the performance of absorbing side collision energy is improved, the front door can be prevented from excessively invading into the vehicle during side collision by being matched with the arrangement of the safety hook, and multiple safety guarantees are formed.

The invention belongs to the technical field of loading, unloading and off-site transferring of military inflatable tents, and particularly relates to a military inflatable tent transfer system. The transfer system comprises a transfer cart and a vehicle carrying platform, wherein the transfer cart comprises a cart platform with rollers at the bottom, a mousing-hook, a push rod and an angle displacement assembly. According to the transfer system, rapid loading and unloading operation of the military inflatable tent in the off-site transferring process can be achieved, meanwhile, the requirement for labor is low, and the field transfer efficiency of the military inflatable tent can also be effectively improved. Another purpose of the invention is to provide a transfer method applying the military inflatable tent transfer system, which can specifically realize high-efficiency transfer operation for the military inflatable tent. The transfer method comprises the steps of hanging the mousing-hook, laying a push rod flat, loading and resetting the push rod so as to complete the loading process of the transfer cart; and when the vehicle carrying platform carries the transfer cart in theloaded state to a designated place, the steps are operated reversely.