57results about How to "Fast shipping" patented technology

The utility model relates to the field of propaganda material, disclose a kind of foldable propaganda material show stand, including storage box, the sliding slot is opened in the storage box inner wall, the sliding block is slidably connected in the sliding slot inner wall, the folding frame is fixedly connected in the sliding block top, the lower display frame is hinged in the folding frame rear side bottom, the upper display frame is hinged in the folding frame front side top, the fixed display frame is fixedly connected in the sliding block front side, the box door is inserted in the storage box top inner wall, the folding frame top inner wall is elastically connected with limiting block by limiting spring. In the utility model, after the expansion of show stand, two groups of lower display frame, two groups of upper display frame and fixed display frame form three-dimensional multilayer display space, can simultaneously display poster, brochure, leaflet and other various forms of public health propaganda material, and the display amount of material is more than doubled than traditional plane show stand, which provides strong support for the effective dissemination of public health knowledge.

The utility model discloses a kiwi fruit peeling device. The kiwi fruit peeling device comprises a base, a positioning installation mechanism, a thread driving assembly and a self-adaptive peeling knife assembly. The rocker is rotated to drive the threaded rod to move transversely, the cross rod is driven to slide up and down along the stand column, and the peeling knife assembly is tightly attached to the surfaces of fruits under the buffering effect of the compression spring. The positioning mounting mechanism adopts a screw rod to adjust the distance between clamping plates so as to fix the device, so that the device does not shake when working on the table top; the peeling knife assembly achieves self-adaptive adjustment of the angle of a blade through a spring and a spherical end structure. The device solves the problems that traditional manual peeling is low in efficiency, and pulp is prone to being damaged by mechanical peeling, and has the advantages of being easy and convenient to operate, wide in applicability and high in peeling integrity.

The application provides a downhole supercritical carbon dioxide fracturing coal rock device and a construction method, which comprises a coal seam, a fracturing borehole, a hole blocking section, a hole sealing section, a fracturing section, a monitoring hole, a fracturing system, a temperature control system, a grouting system, a liquid carbon dioxide pressurizing system, a proppant mixing system, an extraction system and a data collector; the fracturing borehole is arranged on the coal seam and comprises the hole blocking section, the hole sealing section and the fracturing section; a plurality of monitoring holes are arranged on the coal seam and are spaced apart in the circumferential direction of the fracturing borehole; and the fracturing system is connected with the temperature control system. The proppant mixing system can improve the performance of the liquid carbon dioxide carrying proppant mixture, so that the proppant mixture effectively enters the fracturing fracture and maintains good flow conductivity. The temperature control system overcomes the difficulty in preparation of downhole supercritical carbon dioxide and can realize injection of carbon dioxide in a supercritical state into the fracturing coal seam.

The invention provides a preparation method of a tin-doped scaly nano gallium oxide thin film solar blind ultraviolet photoelectric detector. The preparation method comprises the following steps: carrying out cleaning pretreatment on a single crystal GaN substrate; depositing an Au thin film on the pretreated single crystal GaN substrate to serve as a catalyst layer; the preparation method comprises the following steps: mixing Ga2O3, diamond and SnO2 powder according to a certain mass ratio to prepare a precursor; putting the single crystal GaN substrate deposited with the Au thin film and a precursor into a CVD furnace, and growing according to preset gas flow, pressure intensity, reaction temperature and reaction time to obtain a tin-doped scaly nano gallium oxide thin film; and respectively preparing electrodes on the surface of the tin-doped scaly nano gallium oxide thin film and the surface of the GaN substrate by adopting a radio frequency magnetron sputtering method. The conductivity of the thin film is improved through tin doping, the specific surface area and light absorption are increased through the scaly nanostructure, high-performance deep ultraviolet photoelectric detection is achieved, and the technical problem that in the prior art, the dark current of a device is high is solved.

The application discloses a heat pump all-in-one machine and system convenient to disassemble and assemble, relates to the technical field of heat pump hot water equipment, and comprises a whole machine frame, a water storage tank, a main machine frame which is detachably connected with the whole machine frame, and a heat pump main machine which is installed in the main machine frame. The application sets the detachable main machine frame in the whole machine frame, integrally installs the complete heat pump main machine (containing a compressor, a heat exchanger and all heat conversion components such as related pipelines) on the main machine frame, and makes the heat pump main machine and the water storage tank form a module which is relatively independent in space and structure. When the equipment needs to be overhauled, maintained or replaced, the main machine frame can be integrally drawn out together with the heat pump main machine, so that the disassembly and assembly difficulty is remarkably reduced; meanwhile, the heat pump main machine pipeline has completed pre-assembly and sealing inside the main machine frame, is connected with the water storage tank only through a small amount of water pipe interfaces, can keep the refrigerant circuit intact after being disconnected, and avoids energy efficiency loss and environmental protection risks caused by on-site discharge and re-charging of refrigerant.

The application discloses a cobalt-phosphorus-cobalt oxide composite electrode material and application thereof as an anode of a direct borohydride fuel cell. First, a conductive substrate is placed in an aqueous solution containing a cobalt source, ammonium fluoride and urea to perform a hydrothermal reaction; after being reduced to room temperature, the conductive substrate is repeatedly cleaned with deionized water, and then is placed in a solution containing sodium hypophosphite to perform immersion; finally, the conductive substrate is calcined at high temperature in a vacuum environment to obtain the cobalt-phosphorus-cobalt oxide loaded on the conductive substrate in situ. The electrode material preparation method provided by the application converts the original contact between a carrier gas and an electrode surface in a phosphorization process into the in-situ adhesion of a phosphorus solution on the electrode surface, realizes a uniform phosphorization process, is low in cost and easy to be industrialized, and the material can be used as an anode material of the direct borohydride fuel cell.

The invention discloses a thermoelectric cement-based structure electrolyte, a cement-based thermal charging capacitor and a preparation method, the thermoelectric cement-based structure electrolyte comprises a cement matrix, and the cement matrix is formed by hardening cement paste uniformly doped with a water-soluble polymer and a two-dimensional MXene material; pores in the cement matrix are filled with an ion donor solution; the mass of the water-soluble polymer is 5-10% of that of the cement; the mass of the two-dimensional MXene material is 0.01%-0.1% of the mass of the cement. According to the invention, by doping the low-dosage water-soluble polymer and the two-dimensional MXene material into the cement paste, the pore distribution of the cement matrix is adjusted, the mechanical properties of the thermoelectric cement-based structure electrolyte are maintained and even improved, and the ternary composite system synergistically obtains a high Seebeck coefficient and ionic conductivity. According to the cement-based thermal charging capacitor, the thermoelectric cement-based structure electrolyte is used as an electrolyte layer, a double-electric-layer capacitor electricity storage electrode is compounded, and the good thermal power generation and electricity storage integration capacity is achieved under the temperature difference effect.

The invention discloses a modular mobile workshop for mite culture, and relates to the technical field of mite culture engineering.The modular mobile workshop comprises a modular mobile workshop unit, the modular mobile workshop unit comprises a workshop body, and wall plates of the workshop body are constructed through heat preservation plates; the environment regulation and control unit is connected with the modularized mobile workshop unit; the high-precision environment regulation and control unit at least comprises an air conditioning system for regulating the temperature in the workshop; according to the modularized mobile workshop for cultivating mites, the temperature and humidity regulation and control fresh air handling unit and the air conditioning system are cooperatively arranged, and air supply pipelines, exhaust pipes and exhaust pipes of the temperature and humidity regulation and control fresh air handling unit and the air conditioning system are gathered in the integrated control unit in a crossed arrangement mode, so that source forced mixing and uniform distribution of temperature and humidity regulation airflow are achieved; therefore, a highly-stable and uniform temperature and humidity field is constructed in the workshop main body, an accurate and controllable optimal growth environment is provided for amblyseius steseii, and the unit culture density and population development synchronism are remarkably improved.

The utility model discloses a split mounting type protection rack used in a wind power tower drum, and belongs to the technical field of wind power tower drum pouring structures. The device comprises a cylindrical barrel formed by annularly rolling an iron sheet for a plurality of circles; a fastening bandage is wound on the outer side face of the cylinder body in the circumferential direction of the cylinder body; a stand column is arranged in the middle of an inner cavity of the barrel. A plurality of groups of supporting rods are arranged on the upright post; the supporting rod is arranged in a cantilever shape in the horizontal direction. An ejector rod is arranged at the extending end of the supporting rod; the ejector rod is arranged in the vertical direction, and one side end face of the ejector rod abuts against the inner side wall of the cylinder. According to the utility model, the problems that the cost is high and the actual use requirement is difficult to meet when a steel template or a corrugated pipe is used as a mold in a cylindrical area at present are effectively solved.

The utility model relates to a combined wallboard mechanism for a modularized integrated house, which comprises N wallboard bodies, each wallboard body comprises a wallboard shell, a wallboard framework playing a supporting role is arranged in each wallboard shell, and the wallboard shells surround all side surfaces of the wallboard framework except the top surface and the bottom surface; a space enclosed by the wallboard shell and the wallboard framework is filled with a wallboard heat preservation layer which has the functions of heat insulation, heat preservation, water prevention and the like; every two adjacent wallboard bodies in the transverse direction are detachably connected through one wallboard butt-joint plate, and the adjacent wallboard bodies and wallboard butt-joint plates are detachably connected with each other; the Ngt; = 2. The outer frame butt joint parts, the butt joint pipe bodies and the wall plate butt joint plates jointly achieve staggered joint connection between the adjacent wall plate bodies and the wall plate butt joint plates, so that different connection gaps are not aligned, and therefore air leakage or water leakage possibly caused by gap alignment is avoided, namely the waterproof and windproof performance is further improved through staggered joint connection.

The present application relates to the technical field of trajectory planning of nonlinear underactuated electromechanical systems, and particularly relates to a multi-unmanned aerial vehicle cooperative hoisting system constraint space crossing trajectory planning method and system. The method comprises the following steps: based on a polyhedral volume constituted by the hoisting system and a hoisting rope tension, a hoisting system crossing formation optimization model under a constraint space is constructed to obtain an optimal formation of the hoisting system crossing the constraint space; a circumscribed sphere center and a radius under the optimal formation of the hoisting system crossing the constraint space are calculated; based on the circumscribed sphere center and the radius, a trajectory planning model of the hoisting system crossing the constraint space based on time optimization is constructed by considering dynamic constraints, driver constraints and flight path point constraints; based on the relative position relationship among the circumscribed sphere center, the unmanned aerial vehicle and the load, the trajectory planning model of the hoisting system crossing the constraint space is adopted to obtain a trajectory of the hoisting system crossing the constraint space; and under the guidance of the trajectory of the hoisting system crossing the constraint space, a load transportation task is completed.

The present application relates to the technical field of rescue stretcher, and discloses a multifunctional high-stability emergency rescue intelligent stretcher, which comprises a stretcher, a reinforcing plate is fixedly connected to the surface of the stretcher, a handle is fixedly connected to the end of the reinforcing plate, a recess is formed in the end of the stretcher, a back strap is fixedly connected to the inner wall of the recess, a positioning groove is formed in the top of the stretcher, and an intelligent life monitoring device is arranged on the inner wall bottom of the positioning groove. When the stretcher needs to be moved, the rescuer lifts up the stretcher by the handle and carries it; when the stretcher needs to be moved on the road, the electric push rod is started to move downward, the circular hole frame is pushed downward by the extrusion plate when the electric push rod moves downward, the circular hole frame rotates downward on the surface of the cylindrical frame when the circular hole frame moves downward, the elastic frame is driven to rotate downward by the rotating rod when the cylindrical frame rotates downward, the universal wheel is in contact with the road surface after the bottom of the cylindrical frame drops, at this time, the stretcher can be pushed to move on the road surface, and the stretcher is supported by the elastic frame.

The utility model discloses a fire-resistant and fireproof combined bus duct which comprises a bus duct fireproof shell, side sliding grooves are symmetrically formed in the end faces of the two sides of the bus duct fireproof shell, a limiting groove is formed in the top end of the bus duct fireproof shell, and sliding blocks are installed on the inner sides of the side sliding grooves in a sliding mode. The bus duct fireproof shell comprises two sliding blocks, a rotating column is welded to the side end face of each sliding block, a rotating block is rotationally connected to the outer side of each rotating column in a sleeving mode, a rotating groove plate is welded to the end face of one side of each rotating block, and a clamping groove is formed in the inner side of each rotating groove plate. Therefore, mutual communication between the copper sheets is facilitated, manual alignment is not needed, no matter whether the bus duct is erected at high altitude or laid on the ground, the connection steps are simplified, collision damage between the copper sheets can be prevented through accurate connection, short-circuit fire at the damaged position in the subsequent use process can be prevented, and the safety of the bus duct is further improved.

The utility model relates to fruit and vegetable sorting technical field discloses a kind of fruit and vegetable transfer mechanism and fruit and vegetable sorting device.Fruit and vegetable transfer mechanism includes rack, transfer track, drive assembly and support assembly;Transfer track is opened with accommodation cavity, the opening of accommodation cavity is located in the one end of transfer track, the opening of accommodation cavity is rotationally connected in the rack with the one end of transfer track back, the rotation axis of transfer track is parallel to horizontal plane;Drive assembly is used to drive transfer track relative to the rotation of rack;One end of support assembly is rotationally connected in the underside of transfer track, and the other opposite end of support assembly is installed in rack.Through such setting, to solve the technical problem of slow fruit and vegetable transfer speed between two fruit and vegetable conveying mechanisms in prior art.

The invention provides a body assembly platform device, which comprises an assembly platform body, a bracket and an anti-explosion electric cabinet, and is characterized in that the anti-explosion electric cabinet is mounted in the assembly platform body and is used for accommodating a control system of the body assembly platform; the bracket is connected with a linear guide rail on the assembling platform body through a sliding block and provided with a mechanical connector connected with a rack on the assembling platform body. And the bracket can realize three-degree-of-freedom adjustment of translation along the axis of the product on the linear guide rail, lifting perpendicular to the horizontal plane and rolling around the axis of the product. The control system is adopted for production line scheduling, no person participates in the whole transfer process, information can be integrated to the production line management and control system, digitization and informatization of transfer assembly can be achieved, the working intensity of workers can be greatly relieved, and the assembly speed can be effectively increased.

The utility model discloses a cement paste stirring device for coalfield borehole hole sealing, including upper cylinder and lower cylinder, the upper cylinder and lower cylinder are all conical, wherein the upper cylinder lower part diameter is greater than the upper part diameter, the upper part diameter of lower cylinder is greater than the lower part diameter, the maximum diameter of upper cylinder is equal with the maximum diameter of lower cylinder, and the height of upper cylinder is lower than the height of lower cylinder, and the upper cylinder and lower cylinder are connected through the connecting flange between. Adopt the same taper upper cylinder and lower cylinder and assemble into the stirring cylinder, and adopt the stirring mechanism that can dismantle, can place to the lower cylinder after can be inverted upper cylinder when transportation, place to the inverted upper cylinder after the stirring mechanism dismantles, can reduce the overall volume of stirring device, convenient transportation can be applicable to the hole sealing cement paste stirring after field drilling operation.

The application provides an earthquake post-unmanned vehicle and unmanned aerial vehicle cooperative scheduling method based on edge computing, belongs to the technical field of earthquake disaster rescue scheduling, and comprises the following steps: initializing an unmanned vehicle and an unmanned aerial vehicle cluster, and acquiring rescue material state data and wounded data; constructing a comprehensive target function, solving the comprehensive target function based on the rescue material state data and the wounded data, and obtaining material and wounded scheduling; acquiring required real-time data based on an edge node, feeding back the real-time data to a control center through an edge server, re-planning a path and calculating unloading, and dynamically allocating the material and wounded scheduling; and improving post-earthquake material transfer timeliness and wounded survival rate by using intelligent scheduling of unmanned vehicle and unmanned aerial vehicle cooperation.

This utility model relates to a garden rain-collecting landscape planting rack, comprising: a base frame assembly, including a first support, a second support, a first horizontal frame, and a second horizontal frame, wherein the first support and the second support are arranged in parallel and have a preset distance between them, and the first horizontal frame is detachably and fixedly connected to the first support and the second support, and the second horizontal frame is detachably and fixedly connected to the first support and the second support; a first hanging assembly, including a first base plate, a first support member, a second support member, and a first limiting member, wherein the first support member, the second support member, and the first limiting member are all detachably and fixedly installed on the first base plate, and the first base plate is detachably and fixedly connected to the base frame assembly; and a second hanging assembly, including a second base plate, a third support member, a fourth support member, and a second limiting member, wherein the third support member, the fourth support member, and the second limiting member are all detachably and fixedly installed on the second base plate, and the second base plate is detachably and fixedly connected to the base frame assembly.

This utility model discloses a tunnel fire-fighting device, relating to the field of tunnel fire-fighting technology. The device includes a fire pump, a foam liquid pump, a corresponding industrial water supply pipeline control valve group, a fire alarm control system, a tunnel body, and foam nozzles. Two sets of symmetrically distributed slide rails are fixedly installed on the upper inner wall of the tunnel body. A movable frame is provided on one side of each slide rail. Four evenly distributed drive wheels are rotatably installed on the inner side of each movable frame. A rotating shaft is fixedly installed in the middle of each of the two sets of drive wheels, and a drive assembly is provided at the top of each rotating shaft. This application uses a servo motor to drive the movable frame to move along the slide rails, which can quickly transport the foam nozzles to the fire area. Simultaneously, the movable frame can drive the delivery pipeline to move synchronously, ensuring a continuous and stable supply of foam liquid. This effectively solves the problem of blind spots in fire extinguishing by fixed nozzles and reduces the number of fixed nozzles required, significantly reducing the amount of engineering work and equipment installation costs.

The application relates to an emergency rescue device, and discloses a rescue air cushion module and a combined device thereof. The rescue air cushion module comprises a square air bag, the square air bag is provided with an inflation opening, the square air bag is a hexahedron, the four side surfaces of the square air bag are provided with hook-and-loop magic tapes, and the rescue air cushion module is detachably connected with another rescue air cushion module through the hook-and-loop magic tapes. The combined device comprises a plurality of rescue air cushion modules, among the plurality of rescue air cushion modules, adjacent rescue air cushion modules are detachably connected through the hook-and-loop magic tapes on the square air bags. According to the application, the rescue air cushion is designed as an independent square air bag module, the side surfaces are provided with hook-and-loop magic tapes to realize detachable connection. During rescue, the shape and size can be flexibly spliced and adjusted according to narrow lanes, irregular terrains and the like, the complex terrain can be attached, the coverage range is enlarged, and the rescue success rate is improved. The modular design facilitates transportation and replacement, reduces the cost, and enhances the practicability and economy.

The utility model discloses a kind of wood structure integrated floor auxiliary transport devices, involve wood structure building construction equipment technical field, including fixed frame, the inside of the fixed frame slidably installed with movable frame.The utility model is by being arranged fixed frame, movable frame and support frame, when the floor of wood structure building is transported to above main body frame, fixed frame can be placed in the side of wood structure building, support frame is turned to horizontal state after, the floor of wood structure building can be placed above support frame, and then wood structure building floor and support frame can be turned to the inside of movable frame together, movable frame can slide in fixed frame to drive wood structure building floor to transport upwards, wood structure building floor is transported to above main body frame after, support frame can be turned again to realize the release of wood structure building floor, and the technical scheme can be in the case of not depending on scene Realize the quick, stable transport of wood structure building floor.

The utility model relates to the technical field of granite water-stable crushed stone processing, in particular to a batching device for granite water-stable crushed stone processing, which comprises a base, and a batching mechanism and a moving mechanism are arranged on the top surface of the base. The batching mechanism is arranged, so that fine screening operation can be better carried out in the discharging process; a first motor is arranged to drive a first stirring rod to rotate, so that the first stirring rod drives a first stirring blade to crush granite water-stabilized gravel entering the box body, the materials are conveniently transported, and a belt conveyor is arranged to carry out better transfer operation; a moving mechanism is arranged, so that the inner wall of the discharging pipe is effectively prevented from being blocked; and a first stirring rod is arranged to drive a second threaded rod to rotate, so that the second threaded rod drives a second stirring blade to rotate, materials are conveyed into the discharging pump, and discharging operation is rapidly carried out.

The utility model relates to the technical field of water conservancy projects, and discloses a slope protection repairing device which comprises a moving platform, a stirring barrel is fixedly connected to the upper end of the moving platform, a conveying mechanism and a stirring mechanism are arranged in the stirring barrel, a hoisting mechanism is arranged at the left end of the moving platform, and a dispatching mechanism is arranged at the left end of the hoisting mechanism. The dispatching mechanism is used for transporting concrete, the hoisting mechanism comprises a winding roller and a steel wire rope, the left end of the movable platform is rotationally connected with the winding roller through a bearing seat, the steel wire rope is wound around the side wall of the winding roller, the left end of the movable platform is fixedly connected with a self-locking motor through a mounting frame, and the output shaft end of the self-locking motor is fixedly connected with the rear end of the winding roller. By means of the hoisting mechanism and the dispatching mechanism, rapid and stable transportation of concrete is achieved, the tedious operation that workers frequently go up and down a slope to carry the concrete is avoided, labor intensity is remarkably reduced, meanwhile, potential safety hazards caused by wet and slippery slopes and inconvenient carrying are reduced, and construction efficiency and safety are greatly improved.

The application discloses an operating tunnel steel lining ring reinforcing attached installation device, which comprises a track trolley, a track frame, a magnetic attraction assembly and a foot stop plate. The track frame is a modular support attached to a tunnel structure, the lower end of which is fixed to a tunnel bottom ring corbel, and the upper end is fixed to a tunnel top segment through fasteners to form a conveying guide rail for steel plates from the tunnel bottom to the top. The track trolley is movably arranged on the track frame and is used for carrying the steel plates to be installed. The magnetic attraction assembly and the foot stop plate are arranged on the track trolley and are used for cooperatively fixing and limiting the steel plates during transportation and installation. The application utilizes the cooperation of the track frame and the trolley to realize the upward lifting and guided movement of the steel plates, and has the advantages of simple structure, quick assembly, strong environmental adaptability, effective reduction of labor intensity and construction cost and the like.

The utility model provides a kind of intelligent water surface garbage cleaning ship, belong to water surface garbage cleaning, resource recovery field.Motor is installed on hull, drive helical blade rotation, control system controls the direction and speed of hull operation, collection wheel is connected with the front part of hull by connecting piece, can rotate on water surface, collect water surface floating garbage;Conveying structure is installed in the front part of hull, cooperates collection wheel, and conveys collected garbage;Crushing mechanism is installed in the middle part of hull, receives the garbage transported by conveying structure and is crushed, one end of spiral conveying mechanism is connected with crushing mechanism, the other end is connected with storage mechanism, radar real-time monitoring environmental condition around hull, timely discovers obstacle and sends signal to control system, solar panel converts solar energy into electric energy, provides clean energy for each electric component in cleaning ship.The utility model can be used in lake, river and other water area, realizes efficient, autonomous garbage cleaning, reduces energy consumption and carbon emission, accords with environmental protection concept.

The utility model relates to the technical field of flood prevention devices, in particular to a filling type reservoir flood prevention bag which is more convenient to fill, higher in stability during carrying and capable of effectively preventing a binding rope from falling off and comprises a bag body, a storage belt is arranged at a bag opening of the bag body, a first storage cavity is formed in the storage belt, and a second storage cavity is formed in the storage belt. The first storage cavity is filled with first filler capable of expanding when encountering water, the first filler can open a bag opening of the bag body after expanding when encountering water, the hand stress area at the bag opening is increased, a binding rope for binding the bag body is prevented from falling off, a connecting belt is arranged on the bag body, and the connecting belt and the bag body form a closed-loop structure. A second storage cavity is formed in the connecting belt, the second storage cavity is filled with second filler capable of expanding when encountering water, the second filler can open the connecting belt after expanding when encountering water, the connecting belt is made of a flexible and water-permeable material, and the storage belt is made of a flexible and water-permeable material.

This invention discloses halloysite-reinforced polyurethane sponge solar interfacial evaporation material and its preparation method, comprising the following steps: Step 1, pretreating halloysite to obtain pretreated halloysite nanotubes; Step 2, pretreating polyurethane sponge to obtain activated polyurethane sponge; Step 3, preparing a mixed dispersion by reacting dopamine hydrochloride with the pretreated halloysite nanotubes, immersing the activated polyurethane sponge in the mixed dispersion and magnetically stirring to induce a self-polymerization reaction of dopamine hydrochloride, followed by rinsing and drying to obtain the halloysite-reinforced polyurethane sponge solar interfacial evaporation material. The material obtained by this invention exhibits good bonding between halloysite and polyurethane sponge.

The utility model relates to the technical field of new energy battery pack production, in particular to a battery pack transfer tray which comprises a tray body, limiting columns and binding belts. The tray is horizontally arranged, and the tray is used for bearing a horizontally placed battery pack; the limiting columns are respectively arranged at four corners of the tray, and the limiting columns and the tray are combined to form a carrying area for placing the battery pack; the two ends of the binding belt are detachably connected to the tray, the binding belt binds and fixes the battery pack on the tray, a structure for rapidly fixing and bearing the battery pack is formed on the tray through the cooperation of the limiting columns and the binding belt, the structure is simple, the limiting columns conduct rigid protection on the four corners of the battery pack, and therefore the battery pack can be fixed and borne conveniently. And the binding belt surrounds the battery pack and binds and fixes the battery pack, so that the battery pack is effectively fixed through mutual cooperation of the binding belt and the battery pack, and when the transfer tray carries the battery pack for transfer, the state is stable, and safety and reliability are achieved.