39 results about "Plane table" patented technology

Apparatus, systems, and methods may operate to access individual lines of information included in a file stored in an electronic storage medium, to detect the existence of data clusters in the file based on neighboring cell content in a horizontal direction (corresponding to the individual lines), and in a vertical direction (orthogonal to the horizontal direction), to identify at least some of the data clusters as being associated with predefined table types (comprising vertical tables, horizontal tables, or cross tables), to merge some of the data clusters into section tables having common properties, and to transform the tables resulting from the merging activity, as well as remaining un-merged data clusters, into a single flat table. The stored file may comprise a spreadsheet file. Additional apparatus, systems, and methods are disclosed.

The invention relates to a method for testing the wet resistance of a fabric, which includes the following steps: water levels of different distances from the lower surface of a tested fabric are sequentially arranged in a wet penetration cup; under certain controlled water temperatures and environmental conditions, the wet penetration amount of the tested fabric is sequentially tested, and the data is regressed to obtain the wet penetration amount when the distance from the water level to the lower surface of the fabric is zero, and the wet resistance of the fabric is obtained by calculation according to the wet resistance formula. The method for testing the wet resistance of a fabric uses the relatively simple wet penetration cup method for testing the wet penetration amount when the distance from the water level to the lower surface of the fabric is zero, calculates the wet resistance, solves the problem that no internal conjunction exists between the two indexes of the wet resistance of the fabric measured by the original sweating plane table and the wet penetration amount of the fabric measured by the wet penetration cup method, and has low investing cost, simple and convenient operation and wide application range.

The invention relates to the field of measuring instruments, in particular to a plane table thermo-conductivity meter based on a guarded hot plate method. On the basis of an existing thermo-conductivity meter, a voltage input method of heating power of protective heating units is improved, and automatic follow-up is conducted according to the hot surface temperature of a metering unit; a flow and heat exchange mode of cooling water in cooling units is improved, and the accuracy of equalization of the cooling surface temperature is increased; the temperature measurement accuracy of hot surfaces, cold surfaces and the protective heating units of test pieces are increased, and the electric power measurement accuracy of heating of the metering unit is increased through a digital electric power meter. According to the plane table thermo-conductivity meter based on the guarded hot plate method, operation is easy, and experimental data are not needed; flow of the cooling water is reasonable, the cooling temperature is uniform, and the temperature difference is small; for temperature measurement, electric power measurement of heating of the metering unit is accurate, and the electric power measurement is accurate to mW level; therefore, the coefficient of thermal conductivity is greatly increased.

The invention discloses an experimental device and method for simulating composite bottom wall effects of different structure types. The device comprises a plane table framework system, an experimentsimulation system, a driving system, an experiment auxiliary system and a control system; the plane table framework system is used for supporting whole experiment equipment, the experiment simulationsystem is used for simulating geological evolution conditions suitable for actual needs of all work areas, and the driving system is used for driving all movable units to complete sand box physical simulation experiments conforming to actual research work area structure evolution simulation; the experiment auxiliary system comprises a lighting device and a photographing device, and the control system is provided with a computer measurement and control module for controlling the lighting device of an experiment table to be turned on and off, the photographing frequency of the photographing device and the driving speed, time, direction and distance of each driving module in the driving system. By utilizing the device and the method, sand box physical simulation experiments of different inclination angles of stratums, gravity sliding structure, stretching structure, extrusion structure and various structure types for superposing bottom cleft structure effects can be carried out.

The invention provides a movable acoustical camera. The movable acoustical camera comprises a front outer shell (10), MEMS microphones (20), a substrate, an image shooting portion (40) and a rear outer shell (50), wherein sound sensing portions of the MEMS microphones (20) are assembled on the front outer shell (10) in the mode of facing the front, the MEMS microphones (20) are fixed to the substrate, the sound sensing portions of the MEMS microphones (20) are exposed out of the front outer shell (10), the substrate is used for assembly of the MEMS microphones (20), a taking lens (41) of the image shooting portion (40) is exposed through a lens hole formed in the front outer shell (10), and the rear outer shell (50) surrounds the rear side of the substrate (30) and the rear side of the image shooting portion (40). According to the movable acoustical camera, the manufacturing time is reduced, manufacturing cost is reduced; due to the fact that a handle portion is added, even a fixing connecting device or a fixing connecting means is not used, when a tester holds the movable acoustical camera at any position or in any space or places the movable acoustical camera on a plane table or the like, setting of the position can be achieved, and use, installation, position movement and position fixation are easy.

The invention discloses a pre-mixing type spiral powder feeding device which comprises a rack, a plane table, weighing sensors, a box, a motor, a rotating shaft, a hollow shaft, a sealing seat, a blowing pipe, a spiral impeller, a feeding nozzle, a discharging nozzle and a controller. Raw materials and a modifier are fed into the box through the feeding nozzle, and the controller controls the motor to drive the spiral impeller fixedly connected with the hollow shaft to rotate through the rotating shaft, so that the raw materials and the modifier are continuously conveyed; meanwhile, compressed air is pumped into the hollow shaft through the blowing pipe, so that the raw materials and the modifier are blown up, and the raw materials and powder are mixed; and the raw materials and the modifier are mixed and pushed to move forwards by the spiral impeller at the same time till mixtures are discharged from the discharging nozzle, and the weighing sensors are used for weighing, so that the output amount of the raw materials and the modifier is precisely controlled. The pre-mixing type spiral powder feeding device is simple in structure, the raw materials and the modifier are mixed and pushed to move forwards by the spiral impeller at the same time so as to be mixed in advance, the subsequent modification mixing time is shortened, and modification efficiency is improved.

The invention discloses an autistic child emotion and social function rehabilitation treatment device. The autistic child emotion and social function rehabilitation treatment device comprises electronic plane table equipment for entertainment of a child patient and further comprises a low-frequency bioelectric stimulating mechanism. The low-frequency bioelectric stimulating mechanism comprises a low-frequency bioelectric generator, a first head stimulating adhesive part, a second head stimulating adhesive part and a pair of voice frequency earphones used for playing voices of the electronic plane table equipment. The voice frequency earphones are provided with stimulating shells attached to auricular concha cavity areas of the child patient. The stimulating shells of the voice frequency earphones are provided with ear biological low-frequency bioelectric stimulating electrodes used for stimulating the auricular concha cavity areas. The first head stimulating adhesive part is provided with a forehead scalp bioelectric stimulating electrode used for stimulating a prefrontal lobe body surface area. The second head stimulating adhesive part is provided with a tempus bioelectric stimulating electrode used for stimulating a temporal lobe body surface area.

The invention provides a chromatic printing production process of a raised table, relating to the technical field of three-dimensional stain paint production of sheets, such as a density fiberboard, a glass magnesium board, a shaving board and the like. A primer is sprayed on the surface of a deburred raised plane table. The dried raised plane table is placed on an operating platform surface of a positive / negative pressure plastic-absorbing machine. A PET (Poly Ethylene Terephthalate) transfer film is covered on the raised plane table, and vacuum plastic-absorbing transfer is carried out on the PET transfer film covered on the raised plane table. After removing the PET transfer film, PU (Poly Urethane) anti-yellowing gloss oil is sprayed on the surface of the raised plane table and is molded by roasting. The PET transfer film (which has the character of no stretching after being heated) is directly used and transfer is carried out by using the primer (which not only replaces a suction plastic adhesive in a transfer technique but also causes a transferred product to have another color besides the color of the transfer film, namely the raised part is in the color of the transfer film and the concave part is in a sprayed bottom color) through the positive / negative pressure plastic-absorbing machine. Compared with the traditional production process of the same type of the products, the labor cost and the raw material cost are greatly reduced, the chromatic aberration is avoided and the yield is improved; and meanwhile, the paint consumption is saved.

The invention discloses an auxiliary device facilitating communication cabinet loading, further discloses a loading method of the auxiliary device facilitating communication cabinet loading and relates to the technical field of communication equipment. The auxiliary device comprises an oblique plane table, a plane table is connected to the right side of the oblique plane table, and a first installation cavity with an upward opening is formed in the plane table and is internally provided with an electric lifting platform; a supporting plate is arranged at the top end of the electric lifting platform and is internally provided with a second installation cavity with the upper portion and the right side each being of an open structure, and the second installation cavity is internally provided with a moving plate with the top surface being flush with the top surface of the supporting plate; the moving plate is internally provided with a third installation cavity with an upward opening, and the interior of the third installation cavity is rotatably connected with a roller; and the roller protrudes out of the moving plate, and the axis of the roller is parallel to the right side surface of the moving plate. According to the auxiliary device and the loading method, communication cabinets can be loaded into a carriage in a time-and-labor-saving mode.

The invention discloses a surface paper edge grinding machine for seamless paper tubes. The surface paper edge grinding machine comprises a paper laying table, a suction disc and a horizontal edge grinding knife rest, wherein the two opposite ends of the edge grinding knife rest are provided with upper and lower parallel inclined grinding knives; a passage is formed over the suction disc, and the suction disc is suspended below the passage; a hanger rod is arranged just above the suction disc; the top of the hanger rod is arranged in the passage through a roller; an air tube is arranged in the center of the suction disc and is laid along the hanger rod; the other end of the air tube is communicated with an air faucet of an air tank; the air faucet of the air tank is provided with an automatic control valve; the automatic control valve controls the air tank to exhaust or suck air; the upper surface of the edge grinding knife rest is provided with a plane table with adjustable length; the grinding surface of each grinding knife has a gradient; and the upper grinding knife is arranged on a gear lifter. According to the surface paper edge grinding machine, paper is sucked or laid down by the suction disc, a group of opposite edges of the paper are ground to have certain gradients through the grinding knives, and the paper edges with the gradients are rolled on the surface of one paper tube and are just butted with each other, therefore, the bonding area of the paper edges is enlarged, and the edges are prevented from warping.

The invention discloses a measurement and calculation ruler which is formed by a half-round compass with a leveling ruler, an inclined ruler and a vertical ruler. The half-round compass is slightly greater than a semi-circle and the leveling ruler is under a diameter. The middle part of the half-round compass is excavated into a crescent shape along a half-round compass radian scale and the diameter. The half-round compass radian scale is in an inside position, is started from a ''10'' point of the leveling ruler and is ended at a ''0'' point of the leveling ruler in a counter-clockwise direction. The lengths of the inclined ruler, the vertical ruler and the leveling ruler are equal and are slightly shorter than the length of the half-round compass diameter. The inclined ruler is hinged with the leveling ruler through a hollow rivet, and the inclined ruler and the leveling ruler are connected with the half-round compass into one body. The vertical ruler is movable. The measurement and calculation ruler combines measuring and calculating. A shape and a number are combined together so that geometry teaching is visual and convenient. When learning a geometric figure, a pupil can carry out measuring, calculating, picturing and surveying without a mathematical table, the compass, a triangular plate, the ruler and plane table equipment.

The invention discloses an intelligent household plane table. The plane table comprises a table top, a first mobile board and a second mobile board are movably connected to the top of the inner surface of the table top, and a first connection rod is fixedly connected to the end, away from the second mobile board, of the first mobile board; a second connection rod is fixedly connected to the end, away from the first mobile board, of the second mobile board, a first hydraulic rod is fixedly connected with the side, away from the first mobile board, of the first connection rod, and a second hydraulic rod is fixedly connected with the side, away from the second mobile board, of the second connection rod; a first motor is movably connected to the end, away from the first connection rod, of thefirst hydraulic rod, and a second motor is movably connected to the end, away from the second connection rod, of the second hydraulic rod. According to the intelligent household plane table, the formof a dinning table with a flat table top and the form of an office table with an office function can be switched randomly, meanwhile the office table can be hidden in the table top in dining so that electronic products cannot be damaged, and the intelligent household plane table is simple.

The present invention discloses a plane table computer. The display and machine frame can be mounted in the middle of various table tops according to embedded mode, the front face of display screen and table top are relained on same horizontal plane, on the front face of display screen, a water-proof, dust-proof and explosion-proof touch control screen is mouted, the computer machine box is mounted in the interior of machine frame, and four legs of said machine frame can be regulated. On the upper end of front face of the machine frame, there is a switch board with all the functions of starting up, shutdown, USB interface, indicator light and controlling display. The right side of front face of machine fram is equipped with optical disk driver. The utilization of software programmable technique can make the operation interface displayed by display be rotated at 90 deg, 180 deg. and 270 deg. and make the operation interface displayed by display be separated into 2 to 4 operation interfaces with different directions. Said invention also provides its application method.

The invention relates to a rapid thermal resistance testing device for thermal clothing materials, comprising a flat panel for fabric thermal resistance testing, a data acquisition system, a control system and a power supply, wherein the flat panel for fabric thermal resistance testing includes an experiment board, a bottom board and a protection board; The experimental board is located in the middle position, the guard plate surrounds the experimental board, and the bottom plate is horizontally located directly below the experimental board and the guard board; the bottom of the experimental board, the bottom plate and the protection board are all placed with a power supply connected to the The heating element; the data acquisition system is used to obtain the temperature of the experiment board, the base plate and the protection board; the control system controls the switch of the power supply according to the temperature collected by the data acquisition system by means of PID control. The invention can shorten the test time.

Two pieces of matches are put inside glass tube on a bracket. Using alcohol burner heats up wall of the glass tube till temperature of matches' heads reaches to burning point. Thus, two matches are lighted up, and sticks of matches are flown off from two ends of the glass tube and dropped at plane table in equal distances to relevant end of glass tube.

The micro optical micro lens comprises: a lens barrel. In the lens barrel, there is a first lens, a first pressure ring, a field mirror, and a second pressure ring in which a magnifier is mounted sequentially mounted. Said first lens is a concave convex lens with a plane table around it; the plane table is supported by the first pressure ring.

The invention discloses an auxiliary device for facilitating the loading of communication cabinets, which relates to the technical field of communication equipment, and includes an inclined platform. There is an electric lifting platform in the cavity, and a support plate is provided on the top of the electric lifting platform. There is a second installation cavity with an open structure on the upper side and the right side in the support plate. The moving plate is neat, and the moving plate is provided with a third installation cavity with an opening upward, and a roller is connected in rotation in the third installation cavity, and the roller protrudes from the moving plate and its axis is parallel to the right side of the moving plate; the invention also discloses A method for loading an auxiliary device that facilitates the loading of a communication cabinet; the invention can save time and labor for loading the communication cabinet into a vehicle compartment.

A binder is configured such that a plane portion is formed on an outer peripheral surface of at least one ring part at a portion intersecting with a back part of the binder, and such that, when a binder holding member of a binding processing machine holds the binder, the plane portion of the binder contacts with a plane table provided on the binder holding member. Because the binder contacts the plane table on the binder holding member when the binder holding member holds the binder, the binder is held in such a state that the binder cannot incline or rotate. Thus, a binding processing operation can be carried out in the binding processing machine while the binder is held in a regular orientation. Accordingly, a mounting failure due to an inclined orientation of the binder and be resolved.

The invention discloses a modeling method for a transmission and transformation project construction management display platform with extensible dimensionality. The modeling method comprises the following steps that geographical information dimensionality is subjected to abstraction, and then is made into a normalized ER (entity-relation) diagram; the normalized ER diagram is divided into dispersed business processing processes, and then each dispersed business processing process is independently modeled; subsequently, many-to-many relations containing data or additive non-keyword facts in the model ER diagram of a single business process are selected and marked to form a fact table; then all the rest tables are composited into a plane table with single-connection keywords capable of directly connecting to the fact table, so that a dimensionality table is formed. With the adoption of a dimensionality extension platform implemented by the modeling method, the secondary development problem is avoided directly through dimensionality definition and standard date access; according to the modeling method, modern information technology and advanced management idea are utilized to improve the efficiency and quality of project management, so that the informationization and real-time decision-making of transmission and transformation project management are realized.

The invention relates to the field of sanitary ware, and discloses a washbasin and closestool water saving system. According to the present invention, a washbasin is arranged on a plane table. A drainer is arranged below the washbasin. A main water tank is arranged below the plane table. A splitter is arranged inside the main water tank. The bottom of the main water tank is provided with a waste discharge hole and a diversion hole. The diversion hole is connected with a diversion pipe. The middle of the diversion pipe is provided with a counter flow deoscillator. The other end of the diversion pipe is connected with a pressurization cabin water inlet. A sub-tank body is provided with a pressurization cabin, a forward flow pressurization device, a piston, a motor, a gear, a vertically arranged rack, a magnetron and a power supply assembly. The pressurization cabin water inlet is arranged on the bottom of the pressurization cabin. A side surface of the pressurization cabin is provided with a pressurization cabin water outlet. The pressurization cabin water outlet is connected with the forward flow pressurization device. The other end of the forward flow pressurization device is connected with a commode water inlet. The upper end of the pressurization cabin is provided with a pressurization cabin gas inlet. The motor is connected with the gear. The gear is engaged with the vertically arranged rack. The magnetron is connected with the piston. The power supply assembly is respectively connected with the motor and the magnetron by electric wires. With adopting the technical scheme of the present invention, the water can be subjected to secondary circulation, and can be reasonably used after the water is used in the washbasin so as to save fresh water resource and reduce use cost.

The structure for preparing the grating type filter includes a laser, a mask, an optical fiber or optical wave-guide and a plane table. The mask is put above the optical fiber or wave-guide. The laser beam irradiates the mask perpendicularly. The optical fiber or optical wave-guide is fixed on the plane table. The mask and the optical fiber or optical wave-guide can rotate around the axis perpendicular to the plane table. The plane table, the mask and the laser beam can translate relative by the direction of the optical fiber or the wave-guide. The invention is suitable for preparing the grating type filter with adjustable spectrum shape on the photoconductive optical fiber or optical wave-guide. The invention provides the features of simple structure, low cost and can be applied to the optical communication area.

A measurement box which can be integrated into existing wafer processing equipment. The measurement box comprises an enclosure which contains a measurement module for measuring objects such as the surfaces of wafers. The measurement module is equipped with a miniaturized measuring device and has a displaceable measuring head and a plane table with a rotatable wafer holder. The enclosure has at least one loading opening for the wafer to pass through as well as a ventilation device.

The invention discloses a treatment method for smashing, briquetting, carving and filling after drying of waste paper money. The treatment method is characterized by including the following steps that moisture and printing ink in the waste paper money are dried; the dried large waste paper money is smashed; a paper pulling vehicle is used for placing the dried large waste paper money into a plane table of a paper conveying part of a large smashing machine, and waste paper money fragments are formed; the fragments are conveyed into a container to be stirred, and a certain proportion of glue water is added to conduct briquetting; and the briquetted waste paper money is dried to be used for carving or being padded into a crystal product, wherein after briquetted at a high pressure, the waste paper money is placed into a dryer again, waste paper money briquettes reach a certain hardness after baking is carried out at a high temperature, and the waste paper money briquettes can be used as carving raw materials to be supplied to corresponding manufacturing merchants for manufacturing artware. The treatment method has the beneficial effects that the waste paper money is prevented from being directly burnt and destroyed, and is dried, smashed, stirred, briquetted and reused. The original treatment cost of the waste paper money is reduced, the environmental pollution is reduced, and meanwhile the artware with the additional value can be reproduced.

The invention relates to multifunctional teaching plane table equipment which comprises a base ruler and a parallel ruler. The base ruler and the parallel rulers are arranged at the bottom of the multifunctional teaching plane table equipment and are perpendicular to each other, a telescope is arranged on the upper side of the multifunctional teaching plane table equipment, a telescope with rulers is arranged at an observation location above the telescope, a disc-shaped vertical dial is arranged on a side of the telescope, and level bubble is fixed to the front of the vertical dial. The multifunctional teaching plane table equipment has the advantages that the multifunctional teaching plane table equipment is precise in design, easy to operate and suitable to be used for surveying and mapping practice teaching for civil engineering majors, and principles and effects of the multifunctional teaching plane table equipment can be sufficiently demonstrated.

The invention discloses a glue-injecting bonding method for fragments and a small-scale projectile. The method comprises the following steps: firstly, a base seat is placed on a plane table, and the front end of a projectile shell and a core mold are fixedly connected to the base seat by bolts; a certain number of the fragments are put into a gap formed between the projectile shell and the core mold, the fragments are uniformly and densely placed, and the upper surfaces of the fragments are flat; and finally a rear screw thread of the projectile shell is fixedly connected with a guard ring screw thread, prepared glue is slowly poured through the center of the core mold, the glue enters a center pouring channel through the center of the core mold, the glue of the center pouring channel enters a side pouring channel through a branch hole, the glue in the side pouring channel finally flows into the gap formed between the projectile shell and the core mold, the fragments are glued, then the glued fragments are allowed to stand, and after the glue is solidified, the upper surface of the gap is flattened. The method provided by the invention not only solves the problem that fragments move to form a bridge after glue is injected into a small-scale projectile, so that distribution of the fragments is not uniform, and ensures that the glue does not adhere to screw threads of a projectile shell.

The invention belongs to the technical field of automation of three-phase electronic electric energy meters, and in particular relates to a rapid three-phase electronic electric energy meter verification crimping device and a verification method thereof. The bottom end of the crimping device is provided with wheels, and an electric control box supported by the wheels There is a workbench on the top, and a watch frame is installed vertically on the workbench. Several layers of hanging watch boards are installed obliquely on the workbench. Several unit watch boards are installed on the surface of the hanging watch board. There are left stoppers, right stoppers and control motors installed on the back of the left and right sides. There are also recessed plane grooves on the surface of the unit panel. A sliding bottom plate is arranged in the concave plane groove. The upper surface of the sliding bottom plate A three-phase electronic watt-hour meter is installed, a left chute and a right chute are arranged between the sliding bottom plate and the left block and the right block, and a device is also provided between the lower edge of the unit meter plate and the lower edge of the depressed plane groove. A table holder, the device is provided with crimping terminals on the table holder.

The invention provides a planar representation method for transtension structures. The planar representation method comprises planar representation of the two-plate position, fault direction reversing, a relative motion direction of a single transtension fault, and a transtension ridge, a transtension groove and the combination pattern thereof formed by ground deformation and visually displays the two-plate position, fault direction reversing, the relative movement direction, the deformation characteristics of the stratum and the plane combination pattern. The invention can describe the basic geological characteristics of the transtension structure by two-dimensional graphics, and reflect the kinematic characteristics of the active plate, the relative movement direction, and the deformation characteristics easily neglected in the study; compared with the traditional extensional structure, the expression of strike slip structure is easier to distinguish and the characterization of transtension structures is more comprehensive, more reasonable and more systematic; the sketch map of the study area is more abundant in static information and the kinematics information is more reasonable; the expression of strike slip structure is beneficial to comprehensive and systematic understanding and expression of regional tectonic stress field.

The invention discloses a method for assisting medical blood transfusion by electronic instruments. A concave table body provided with a sponge body is fixedly arranged on a plane table arranged in a blood drawing window; a snap fastener and an elastic tensioning bandage provided with an electronic sphygmomanometer are arranged at the outer side of the table body; and one end of the table body is provided with a concave support frame. The method has the advantages that simplicity, safety and practicability are realized; and a patient is enabled not to influence the blood drawing due to the nervousness, the tremulousness or the vellication or the sudden withdrawal of the arm in the needle puncture process, so that unnecessary medical accidents are avoided.

The invention discloses a measurement and calculation ruler which is formed by a half-round compass with a leveling ruler, an inclined ruler and a vertical ruler. The half-round compass is slightly greater than a semi-circle and the leveling ruler is under a diameter. The middle part of the half-round compass is excavated into a crescent shape along a half-round compass radian scale and the diameter. The half-round compass radian scale is in an inside position, is started from a ''10'' point of the leveling ruler and is ended at a ''0'' point of the leveling ruler in a counter-clockwise direction. The lengths of the inclined ruler, the vertical ruler and the leveling ruler are equal and are slightly shorter than the length of the half-round compass diameter. The inclined ruler is hinged with the leveling ruler through a hollow rivet, and the inclined ruler and the leveling ruler are connected with the half-round compass into one body. The vertical ruler is movable. The measurement and calculation ruler combines measuring and calculating. A shape and a number are combined together so that geometry teaching is visual and convenient. When learning a geometric figure, a pupil can carry out measuring, calculating, picturing and surveying without a mathematical table, the compass, a triangular plate, the ruler and plane table equipment.

The invention discloses a medical tool trolley which is characterized by comprising horns, handles, shock absorption springs, rollers, a garbage collection device, a dustproof cover, a pushing handle,supporting frames, an object storage cabinet and a plane table, wherein the shock absorption springs are arranged above the rollers; the object storage cabinet is arranged above the shock absorptionsprings; the object storage cabinet is provided with the handles; the supporting frames are arranged on two sides of the object storage cabinet; the garbage collection device is arranged on the side wall of the front end of one supporting frame. The medical tool trolley can adapt to various different road conditions and landforms, temporarily store garbage produced in disinfection and cleaning processes and prevent peculiar smell of the garbage from being emitted into air; due to the design of the horns, in case of large passenger flow, the horns can remind people of vehicles coming; furthermore, a latex layer is also arranged above a trolley body, and the latex layer is a soft rubber material and is 2 cm in thickness; when people collides with the trolley body, a protective layer achievesa protective effect, so that the use range is increased, and the working efficiency is improved.