795results about How to "Keep clean and tidy" patented technology

The invention discloses a rotary type fruit peel and pit removing device. The rotary type fruit peel and pit removing device comprises a machine body; the top of the machine body is fixedly connected with a first hydraulic cylinder through bolts; the first hydraulic cylinder is provided with a first piston rod; the first piston rod is connected with a moving plate; the lower surface of the moving plate is connected with a sleeve; a second hydraulic cylinder is arranged in the sleeve; the second hydraulic cylinder is provided with a second piston rod; the tail end of the second piston rod is connected with a pushing block; the side wall of the second piston rod is connected with a connecting rod; the connecting rod is connected with a dicing device; a sleeve ring is arranged in the position, above the dicing device, of the sleeve; the side wall of the sleeve ring is connected with a rotating rod; the lower end of the rotating rod is connected with a knife blade through a telescopic rod; a waste peel box is arranged below the machine body. According to the rotary type fruit peel and pit removing device, a peeling operation and a pitting operation of fruit are quickly performed through a rotating arc-shaped knife blade; the peeled fruit is diced quickly through the dicing device; fruit peel is collected in a centralized manner so as to keep a production environment clean and tidy.

The invention discloses an internally-arranged automatic coating device and method based on 3D printing of precious metal. The device comprises a forming chamber, a powder laying mechanism and a datum horizontal plate; a closed powder storage box is arranged below a powder outlet of a powder box body, and a quantitative powder feeding mechanism is arranged between the powder outlet of the powder box body and the closed powder storage box; a structure shaped like a Chinese character 'hui' is formed by the enclosure of the peripheral side walls of the closed powder storage box, and two powder coating scrapers are installed on the front side wall and the rear side wall of a lower opening in the powder laying direction; the peripheral side walls of the closed powder storage box, the two powder coating scrapers and the datum horizontal plate form powder storage space; the powder coating scrapers flattens powder from the powder box body uniformly back and forth with the datum horizontal plate as the datum plane. The device integrates the quantitative powder feeding function and the efficient powder laying function and can effectively increase the utilization rate of the precious metal and reduce material waste when applied to the 3D printing process of the precious metal.

The invention discloses a carding device for a textile fabric. The carding device comprises a frame, a first air spraying plate, a first air spraying head, a first dust collecting plate, a water spraying plate, an atomized water sprayer, a hairbrush settling roller, a hair comb, a transition roller, a first ironing roller, a second air spraying plate, a second air spraying head, a second dust collecting plate, a second ironing roller and a reshaping press roller. The carding device for the textile fabric can be used for carding the textile fabric, the impurities including hairy materials, velvet and the like attached to the fabric can be removed, the fabric surface can be smoothened, the fabric surface can be kept clean and tidy, so that the quality of the fabric can be promoted; and the carding device is simple and practical in structure, convenient in operation, and favorable to be popularized and applied in production.

The invention discloses a plate cleaning machine which comprises a housing and spray heads, wherein a driven wheel is arranged at the lower right end of an inner cavity of the housing, and is in transmission connection with a driving wheel through a conveying belt; the driving wheel is in transmission connection with a motor through a belt; the motor is arranged at the lower end of the left side of the outer surface of the housing; a first driving hydraulic rod is arranged at the left end of the top of the inner cavity of the housing; a first driven hydraulic rod is arranged at the bottom of the outer surface of the first driving hydraulic rod, and is connected with an inner cavity of the first driving hydraulic rod in a sleeving manner; a scraping plate is arranged at the bottom of the outer surface of the first driven hydraulic rod; second driving hydraulic rods are arranged at the right end of the outer surface of the first driving hydraulic rod; and second driven hydraulic rods are arranged at the bottoms of the outer surfaces of the second driving hydraulic rods, and are connected with inner cavities of the second driving hydraulic rods in a sleeving manner. The plate cleaning machine is provided with three hairbrush rolls, and can effectively clear away blots on the surface of a plate, and the cleaning efficiency of the plate is improved.

A refrigerating machine room assembly type construction method based on a BIM technology comprises four stages, namely a deepening design stage, a prefabrication machining stage, a transportation stage and a field assembly stage. According to the method, a designed construction drawing is combined with a construction site, electromechanical professions are comprehensively planned, civil engineering, curtain walls, decoration and other acceptance units are connected, and the problem of serious difficulty in construction and key areas are pre-judged. The method has the advantages that on-site construction is guided, engineering quality is improved, guarantee is provided for engineering progress, project cost is saved, completion data is input into the building information model finally, system maintenance and use during project operation are facilitated, and expected functions of buildings are achieved finally and added value is increased. Compared with a traditional refrigerator room construction method, the construction method adopting the prefabricated assembly refrigerator room has remarkable advancement and advantages in the aspects of construction period, quality, safety, manufacturing cost and other technical and economic effects.

The invention discloses a foaming type polyurethane wave-absorbing material and a preparation method thereof. The foaming type polyurethane wave-absorbing material is prepared in the way that a wave-absorbing material, a fire retardant and an additive are directly added to semi-rigid foam and rigid foam polyurethane which serve as carriers. The preparation method comprises the steps of: firstly, dividing the polyurethane raw material into a component A and a component B, wherein the component A is diisocyanate or a derivative of diisocyanate, the component B is polyether glycol or polyester polyol; adding the additive into the component B, mixing and stirring uniformly for later use, adding the fire retardant and the wave absorbing material in the component A or B in any proportion, respectively pouring the prepared components A and B which are uniformly mixed into two material tanks of a low-pressure polyurethane pouring machine, then pouring the prepared material into a mould by using the pouring machine, foaming for 6-8min and then opening the mould, taking a product out, curing the product for 0.5-2 days, and finishing to obtain the foaming type polyurethane wave-absorbing material. The foaming type polyurethane wave-absorbing material has the advantages of strong wave absorbing property and stable reflectivity, and is suitable for mass production.

The invention relates to internet-of-things based environment-protecting equipment for riverway wastewater treatment. The internet-of-things based environment-protecting equipment for riverway wastewater treatment comprises a main body, a shell, a recovering mechanism and a stirring mechanism; the recovering mechanism comprises a reciprocating assembly and two swinging assemblies; the stirring mechanism comprises a self-rotating assembly, a control assembly and a stirring assembly; and the stirring assembly comprises a rotating rod and a plurality of stirring units. The internet-of-things based environment-protecting equipment for riverway wastewater treatment can gather and clean floating garbage impurities through the recovering mechanism, guarantees cleanness and tidiness of the riverway, is more convenient and efficient to clean compared with the mode of cleaning the floating garbage manually, is safe and reliable, and can completely stir medicine liquid through the stirring mechanism, so that the medicine liquid is dispersed in river water uniformly when being thrown into the river water, the purification effect of the river water is better, the current situation of the riveris improved, a healthy and comfortable living environment is created, and the practicability of the environment-protecting equipment is greatly improved.

The invention discloses a winding device for cable production and machining. The winding device comprises a winding support, a reel, a cushioning device and a rotating device, wherein the cushioning device comprises a second cushioning device and a first cushioning device which are the same in structure; each of the second cushioning device and the first cushioning device comprises a buffer plate, a No. 1 guide rod, a No. 2 guide rod, an elastic rubber cushion and a spring; and the rotating device comprises a rotating motor, a rotating motor bracket, a rotating plate and a rotating seat. The winding device is reasonable in structural design; a cable is wound uniformly, is effectively prevented from being damaged during a winding process, and can be cleaned during the winding process, so that the quality of cable winding is improved, and the practicability is strong.

The invention discloses an automatic waste collection device of a stamping die. The automatic waste collection device of the stamping die comprises a stamping platform, a motor, a pushing plate and awaste box. The motor is fixed to the top of a motor base. A fixing head is fixed to the output end of the motor. A first connecting rod is fixed to the outer side of the fixing head. The end of the first connecting rod is rotatably connected with a second connecting rod. A guide box is arranged at the bottom of the stamping platform. A collection box is connected to the bottom of the guide box. Asliding hole is formed in the middle of one side of the collection box. Sliding grooves are formed in the inner walls of the two sides of the collection box. The collection box is connected with the pushing plate through the sliding grooves. A cylinder is fixed to the middle of one side of the pushing plate. One side of the cylinder penetrates through the sliding hole to be rotatably connected with the second connecting rod. A discharging port is formed in the other side, perpendicular to the sliding hole, of the collection box. A conveying plate is fixed to the bottom of the discharging port.The waste box is placed under the bottom of the conveying end of the conveying plate. According to the automatic waste collection device, the pushing plate connected to the end of the second connecting rod is driven by the motor to reciprocate leftwards and rightwards in the collection box so as to automatically push waste into the waste box.

The invention relates to a dyeing machine cloth outlet squeezing water recovery device and a working method thereof. The device comprises a dyeing cylinder with a cloth inlet and outlet in the front end, a frame capable of swinging up and down is hinged to the dyeing cylinder above the cloth inlet and outlet, a pair of rollers is arranged in the frame, and the bottom of the frame is provided with a liquid guide plate capable of extending into the cloth inlet and outlet when the frame swings downwards. By means of the dyeing machine cloth outlet squeezing water recovery device, squeezing water recovery is conducted on cloth when the cloth is discharged, the recovery efficiency is high, the device is convenient to use, waste of dye liquor is effectively reduced, and the cleanness and the tidiness of the working environment are ensured.

A tobacco material suffocating process method is disclosed, wherein the tobacco material is arranged on the transporting guipure or the reticular lamina (3) for forward movement, meanwhile insufflating the water spray and the steam to the material from the upper and the lower part of the transporting guipure or the reticular lamina, for suffocating the material. The transporting guipure or the material suffocating section of the reticular lamina are arranged in the suffocating body formed by the casing (6), and a waste stream suction device (7) is arranged on the casing (6). The invention has good heating resurgence effect to ensure the resurgence effect, meanwhile simplifying the resurgence device structure, and convenient to maintain, which greatly reduces the device energy consumption, ensures the cleanness and nattiness of the plant environment, also can reduce the loss generated in the working process for the tobacco material caused by the tatter.

The invention discloses an automobile casting cutting machine. The automobile casting cutting machine comprises a workbench and a cutting device. The cutting device is arranged above the workbench. The workbench is internally provided with a dust collection bin which is of an inverted trapezoidal structure. The lower end of the dust collection bin is connected with a dust collector through a pipeline end. The upper side of the dust collection bin is provided with a plurality of suction pipes. The upper ends of the suction pipes are communicated with the upper surface of the workbench. The four corners of the lower end of the workbench are provided with damping bases. Each damping base comprises a base body and a supporting base, wherein the supporting base is arranged above the base body and used for being connected with a rack; the base body is provided with a vertical connecting part extending upwards; the connecting part is in threaded connection with a connecting sleeve used for transversely limiting the supporting base; the upper end of the supporting base is arranged in the connecting sleeve in a penetrating mode; a spring is arranged between the supporting base and the base body; an anti-drop unit used for preventing the spring from dropping is arranged at the lower portion of the supporting base. The automobile casting cutting machine is simple in structure, convenient to use, safe in cutting and low in noise, and the workbench is tidy and clean.

The invention discloses a full-automatic water quality analyzer and a working method thereof. The water quality analyzer comprises a shell, an analyzer main body is fixedly mounted on the inner wall of the upper side of the shell; a first air cylinder clamping jaw and a rotary air cylinder are fixedly mounted on an air cylinder mounting frame; a lifting mechanism is fixedly installed on the innerwall of the lower side of the shell and used for driving a sampling barrel to ascend and descend, a storage vessel is arranged on a supporting base, a second air cylinder clamping jaw is fixedly installed at the top of a connecting plate, a third air cylinder clamping jaw is fixedly installed at one end of a rotating rod, a funnel is installed on the inner wall of the lower side of the shell, anda liquid discharging pipe is fixedly installed at the bottom of the funnel. The water quality analyzer can float in water, manual lifting is not needed during sampling, the labor intensity is reduced,the water quality analyzer can automatically perform sampling, is convenient to carry, automatic in operation, convenient and rapid, can automatically pour out an analyzed sample, and ensures that the internal environment of the water quality analyzer is clean and tidy.

The invention discloses a grain sampler. The grain sampler comprises a first stand column, a second stand column, a third stand column, a cantilever, a sampling vehicle and a sampling rod, wherein the first stand column is fixed on the ground; the second stand column is arranged on the first stand column in a manner of axially rotating; the third stand column sleeves the outer side of the second stand column in a retractable manner; the cantilever is horizontally arranged at the upper end of the third stand column; the cantilever is provided with a first guide rail along the self length direction; the sampling vehicle is arranged on the first guide rail and slides relative to the cantilever; the sampling vehicle is provided with a second guide rail along the vertical direction; the sampling rod is arranged on the second guide rail and slides up and down relative to the sampling vehicle; a grain pumping channel is arranged at the radial center of the sampling rod; a lateral hole connected with the grain pumping channel is formed in a side face of the sampling rod; and the upper end of the grain pumping channel is connected with a grain conveying pipe, and a negative-pressure draught fan communicated with the grain conveying pipe is arranged on the ground. The grain sampler is high in degree of freedom and accurate in sampling.

The invention discloses a fabricated construction method of an air-conditioning plant room. The fabricated construction method includes a design deepening phase, a prefabrication processing phase, a transportation phase and an on-site assembly phase. The design deepening phase includes the steps that on-site surveying and mapping are performed, and a plant room drawing is checked; BIM is performedbased on the plant room drawing; and a model is decomposed, and simulation assembly is performed. The prefabrication processing phase includes the following processes that a pipeline segment design drawing is converted into pipeline processing drawings, and the pipeline processing drawings are divided according to technological processes of cutting, grouping and welding; the pipeline processing drawings are imported into processing equipment, cutting, grouping and welding treatment is performed on pipelines, and the pipelines are assembled in sequence; non-destructive inspection of pipeline weld seams is performed; and surface treatment is performed on the pipelines. The fabricated construction method of the air-conditioning plant room can solve the problems that one-time installation inplace of complex pipelines construction is difficult, the construction efficiency is low, and the construction accuracy is poor.

The invention relates to an answer sheet marking device, a marking method and a recognition method. The invention provides an answer sheet marking device in order to solve the problem that the current answer sheet is inconvenient to color. In the invention, an answer sheet is put between an upper board and a lower board which can be folded, holes corresponding to marking areas behind all question numbers on the answer sheet are arranged on both the upper board and the lower board, a person taking an examination puts the punch head of a punch pen in the corresponding holes of the upper board and presses down, and through holes, namely marking holes can be accurately made in the marking areas of the answer sheet. The invention also provides an answer sheet marking method. When a person takes an examination, the person answers all questions in a way of stamping through holes in corresponding marking areas behind corresponding question numbers on the answer sheet as marking holes, and the marking holes are used as marks which can be recognized by a machine. The invention also provides an answer sheet recognition method. An answer sheet with marking holes is put on a color board, and the color of the color board is displayed through the marking holes just like painting the marking holes with the color of the color board, so that the positions of the marking holes can be recognized by the machine.

The invention relates to a stainless steel wire manufacturing process, in particular to a stainless steel wire manufacturing device. The stainless steel wire manufacturing device comprises a bottom plate, a stretching mechanism and a traction mechanism, the stretching mechanism is installed in the middle of the upper end face of the bottom plate, and the traction mechanism is arranged on the rightside of the stretching mechanism and fixedly installed on the right side of the upper end face of the bottom plate. The problems that most existing stainless steel wire manufacturing devices adopt aone-time wire stretching mode, stainless steel wires cannot be stretched step by step, consequently, the wires become thinner suddenly, drawing force changes suddenly, the stainless steel wires are prone to being snapped, and the quality and the mechanical property of the formed stainless steel wires are affected are solved; and the problems that an existing stainless steel wire manufacturing device cannot evenly coat the surface of a stainless steel wire with a lubricating agent, so that the lubricating degree is insufficient when the wire is stretched, and burrs are likely to appear on the surface of the stretched wire are solved.

The invention discloses an intelligent cleaning system and an intelligent cleaning method. The intelligent cleaning system comprises an acquisition device and a server, wherein the acquisition deviceis used for collecting environmental information, and the environmental information comprises at least one kind of people flow information, temperature information and humidity information; and the server is suitable for obtaining environmental cleaning records and the environmental information acquired by the acquisition device, and determining next cleaning start time according to the environmental information and the cleaning records. According to the cleaning records and the environmental information, the server can determine the dirty degree of environment over time, and therefore formulate different cleaning strategies such as environment cleaning frequency changing. Therefore, unreasonable distribution of cleaning resources cannot be caused, part of a site can be prevented from being not cleaned in time, or can be prevented from being excessively cleaned. On the premise that the environment is cleaned in time, and is kept clean and tidy, manpower and material resources are saved, and waste of resources is avoided.

The invention discloses an automatic paint spraying device which comprises a spray molding conveying line, a paint spraying chamber and a spray molding chamber. Power conveying motors, a conveying track, pulleys and conveying feet are arranged on the upper portion of the spray molding conveying line, a first-level hook and second-level hooks are arranged below each conveying foot, one end of the spray molding conveying line is provided with the paint spraying chamber, a spraying device is arranged on the outer side of the paint spraying chamber, and a worker can work conveniently by means of the spraying device; a conveying pipe is arranged on one side of the spraying device, a biomass boiler is connected to one end of the conveying pipe, spray nozzles, filters and a waste water collection tank are arranged in the paint spraying chamber, the other end of the spray molding conveying line is provided with the spray molding chamber, the top of the spray molding chamber is provided with a feeding hopper, a control module is arranged on the side wall of the spray molding chamber, a time displayer, a temperature monitor, an adjusting knob and a pressure meter are arranged on the control module, the bottom of the spray molding chamber is provided with the waste collection tank, and the other side of the spray molding chamber is provided with steps, so that a person walks conveniently during the material feeding process.

The invention provides a snake cultivating method which is safe, environmentally friendly, efficient, feasible and economical. A plurality of bed bodies which are 30 cm higher than the ground are arranged in a snake house. The bed bodies are provided with bottoms of mesh structures. Microorganism padding with the thickness of 5 cm-7 cm is arranged on the bottoms of the mesh structures in a paved mode. At least two wood plate layers with certain interlayer space distance are arranged on the padding. The interlayer space distance is set according to the size of a snake. Feeding and drinking utensils are arranged on the padding. Nylon nets cover the bed bodies and are provided with herringbone zippers. The sizes of the inner spaces formed by the bed bodies and the nylon nets in a separating mode are that the lengths * the heights * the widths are equal to 2 m * 1 m * 1 m.

The invention relates to a round cornering machine. The round cornering machine comprises a working table, a machine base, a machine box, a driving device, a clutch device, a transmission device and a cutter device. The machine base is arranged above the working table and fixedly connected with the working table, the machine box is arranged below the working table, the driving device and the transmission device are arranged in the machine box, the driving device is connected with the transmission device through the clutch device and drives the transmission device to move, and the transmission device drives the cutter device to slide on the machine base up and down. The driving device is connected with the transmission device through the clutch device, then the cutter device is driven to move up and down, and the clutch device can be connected with and separated from the driving device, so that non-intermittent continuous operation of the driving device is ensured, and not only can service life of the driving device be prolonged, but also production efficiency can be improved.

The invention discloses a textile defect detection device based on machine vision. The device comprises a workbench; a guide rail is arranged at the top of the workbench; a speed reducing motor, a rotating shaft and a storage battery are arranged in the workbench; the top end of the rotating shaft penetrates through the upper portion of the interior of the workbench and is fixedly provided with abase plate. The cosmetic storage and display device convenient to use is provided with a guide rail, a connecting rod, a rolling wheel and a first spring; in the starting and operating process of thespeed reducing motor, vibration generated by the speed reducing motor can be transmitted to the first spring through the fixing plate; the first spring is used for buffering and eliminating vibrationforce generated by vibration due to own specific contraction and composite force, so that the device is more stable in the operating process; and meanwhile, the speed reducing motor rotates to drive the connecting rod and the rolling wheel to slide in the guide rail, and a supporting rod and the rolling wheel play a role in supporting the center of the device in the process of rotation of the speed reducing motor, so that the problem that the gravity center is unstable is solved to a great extent.

The invention relates to a self-cleaning system of an air-jet loom. The self-cleaning system comprises a blowing device, a collecting device and a protective cover device, the blowing device and the collecting device are correspondingly arranged on a left wall plate and a right wall plate on the lower portion of a rear opening of a heald frame of the air-jet loom, and the protective cover device encloses a main nozzle and a front opening of the heald frame of the air-jet loom. The blowing device comprises a blowing port and a blowing structure, and an air outlet of the blowing structure is formed in the inner side of the edge of the blowing port. The collecting device comprises a plurality of collecting ports, pipelines, a cotton collecting box and a fan, the collecting ports are connectedwith the cotton collecting box through the pipelines, the cotton collecting box is connected with the inside of the fan and separated from the fan by a filter screen, a negative-pressure structure isarranged in the fan, and the collecting ports face the air-jet loom. The protective cover device comprises a cover plate and two baffle plates, wherein the two baffle plates are arranged at the leftend and the right end of the cover plate. The system can effectively clean flyings and droppings generated by the front opening and the rear opening of the heald frame, air-jet weft insertion, reed beating-up and the like, and cleanness of a fabric interweaving environment is ensured.

The invention discloses an ultrasonic atomization device and an electronic cigarette. The ultrasonic atomization device comprises a smoke generation device and a driving device, wherein the smoke generation device is electrically connected with the driving device; the smoke generation device comprises an ultrasonic transduction component, an atomization cavity and a tobacco tar cavity; a through hole connected with tobacco tar is formed in the atomization cavity; the atomization cavity is internally provided with the ultrasonic transduction component; one end of the ultrasonic transduction component is eclectically connected with the driving device; the other end of the ultrasonic transduction component is arranged inside the atomization cavity; a tobacco tar guide layer is adhered to theouter side of the ultrasonic transduction component; the tobacco tar guide layer is in contact with the tobacco tar cavity through the through hole; a backflow channel is formed in the lower part of the atomization cavity; one end of the backflow channel is communicated with the interior of the atomization cavity; the other end of the backflow channel is connected with the tobacco tar guide layer.The ultrasonic atomization device is simple in structure, the atomization cavity can be effectively kept clean without tobacco tar residue, and the service life of the smoke generation device can beeffectively prolonged.

The invention discloses a crushing and filtering integrated dust-free feeding station. A feeding platform is also provided on the top of the support, a dust removal fan is installed on the top of the silo, and a dust removal filter element is installed on the bottom of the dust removal fan. This crushing and filtering integrated dust-free feeding station, the powder enters the silo from the feeding platform and the bin door, through the action of the vibrator, crushing disperser, material cleaner and filter screen, the powder and agglomerates are separated, and the agglomerates enter The crushing motor is used for crushing operation, the crushing disperser is driven by the power of the motor, the cleaning device and the crushing disperser rotate under the power transmission of the motor, the whole device automatically breaks the agglomerated materials, reduces the labor intensity of the operator, improves the feeding efficiency, and increases The air supply device is installed to ensure the smooth flow of the delivery pipeline to avoid blockage and dust.

The invention discloses an adhesive dispensing machine for a semiconductor apparatus. The adhesive dispensing machine is characterized by structurally comprising a machine body, an adhesive dispensingmachine body, a conveyor and a control panel, wherein the adhesive dispensing machine body is mounted on the top center position of the front surface of the machine body; and the conveyor is arrangedon the top surface of the machine body. While the adhesive dispensing machine is used to perform adhesive dispensing on the semiconductor apparatus, a telescopic tube moves vertically inside an adhesive dispensing tube according to amount of inlet adhesive inside the adhesive dispensing tube so as to reduce residual adhesive on the outer wall of the adhesive dispensing tube, so that direct contact between the adhesive dispensing tube and the surface of the apparatus is favorably reduced, the outer wall of the adhesive dispensing tube is kept clean, an adhesive drawing phenomenon is reduced, aqualification rate of semiconductor apparatus processing is favorably increased, and processed defective products are reduced; the outer wall of the telescopic tube is increased as part of adhesive is easily left on the outer wall of the telescopic tube; the telescopic tube moves vertically to movably fit to the inner part of a blocking block, and a clearing block clears a little adhesive left outside, so that the telescopic tube freely moves up and down inside the adhesive dispensing tube, and therefore, adhesive dispensing for the semiconductor apparatus is favorably quickened.

The invention relates to a computer case. The computer case comprises a case; the case is a cuboid; vent holes are formed in the side surfaces of the case; four cylindrical grooves are equidistantly and uniformly formed in four corners of the bottom surface of the case; telescopic rods are arranged in the cylindrical grooves and are connected with the case by bolts; each telescopic rod comprises a first steel pipe and a second steel pipe; a spherical concealed button supported by a small spring is arranged at the 1 / 2 part of the second steel pipe and matched with a small groove formed in the 1 / 2 part of the first steel pipe; a U-shaped open groove with a downward opening is formed in the part below the 1 / 2 part of the second steel pipe; a round hole is formed in the center of each of two side walls of the U-shaped open groove; a wheel is arranged in the U-shaped open groove; the wheel is in shaft connection with the U-shaped open groove through the round holes; and a cuboid groove is formed in the top surface of the case. The computer case is simple and attractive in structure, convenient to use and capable of saving labor and time.