126results about How to "Meet the needs of daily use" patented technology

The invention discloses a biodegradable polylactic acid composite material, and a preparation method and an application thereof. The biodegradable polylactic acid composite material comprises the components of, by weight, 100 parts of high-molecular-weight polylactic acid, 10-40 parts of low-molecular-weight polylactic acid, 10-30 parts of biodegradable copolyester, 0.1-3 parts of a chain extender, 0.1-3 parts of an anti-hydrolysis agent, 0.1-5 parts of a nucleating agent, 5-20 parts of an inorganic filler, and 0.1-0.8 parts of an antioxidant. The weight average molecular weight Mw of the high-molecular-weight polylactic acid is greater than 100000 and no greater than 200000, and the weight average molecular weight Mw of the low-molecular-weight polylactic acid is no lower than 60000 and no greater than 100000. The polylactic acid composite material provided by the invention has high melt strength, high toughness, high heat resistance, high water resistance and good processing properties. The material can be widely applied in the fields such as toys, offices, cars and electronic appliances.

The invention discloses an amylum category complete biodegradable material and a preparation method thereof. The amylum category complete biodegradable material comprises, by weight, the long-chain branch aliphatic polyester or long-chain branch aliphatic series- aromatic copolyesters 50-70%, the starch 20-30%, the chain extender 0.1-3% and the balance chain extender 9-17%. The preparation method comprises the steps of enabling all components to be mixed in a high speed mixer, feeding in a twin-screw extruder after accurate measurement by means of a measurement scale, and extruding and prilling by adjusting a built-up sequence of a screw and designing different exhaust ports. The amylum category complete biodegradable material and the preparation method of the amylum category complete biodegradable material solve the problems of dispersing, plasticizing and exhausting of starch filler in the twin-screw extruder, and obtained amylum complete biodegradation material not only has complete biodegradation performance, but also has excellent mechanical property and good extrusion molding working quality.

The invention discloses a separated type long-distance communication mobile terminal and a use method thereof, wherein the separated type long-distance communication mobile terminal comprises a host part and a display part, wherein the display part and the host part are arranged separately; the host part comprises a control module and a wireless transmitting module; the control module is used for outputting a control signal and a MIPI display signal; the wireless transmitting module is used for transmitting the control signal and the MIPI display signal to the display part; the display part comprises a wireless receiving module and a touch screen; the wireless receiving module is used for receiving the control signal and the MIPI display signal; the touch screen is used for receiving a touch control signal input by a user, and outputting corresponding display information according to the control signal and the MIPI display signal; the host part and the display part are in wireless connection; the mobile terminal can be divided into two parts; the host part can be put in a pocket or a bag; only the display part needs to be held to satisfy daily use requirements; and thus, convenience is provided for users.

An SIP and Web service combined value added service platform for a mobile intelligent community relates to a network service platform, and comprises an SIP gateway system, a Web service system and a terminal system, wherein a mobile terminal and an intelligent community terminal of the terminal system are registered to an SIP server of the SIP gateway system through SIP identification, and can perform communicative connection through an SIP protocol; the SIP gateway system comprises the SIP server and a user data gateway; the user data gateway is communicated with the Web service system through a TCP / IP network communication protocol; the Web service system comprises a service provider module, a service consumer, a remote service register center and a Web application server; the terminal system comprises the mobile terminal, the intelligent community terminal and a corresponding terminal platform software module, and calls services custom-made by users through the SIP gateway system and a service calling interface of the Web service system.

The invention belongs to the technical field of biodegradable polyester material, and discloses fully biodegradable polyester material in composting conditions, and a preparation method and the application thereof. The polyester material comprises the following constituents by mass percent: 93 to 99.5 percent of long chain branched polyester, 0.1 to 3 percent of a chain extender, 0.1 to 1 percent of an antioxidant, 0.1 to 1 percent of a lubricant, 0.1 to 1 percent of a stabilizer, and 0.1 to 1 percent of a nucleating agent. The material adopts the efficient chain extender to be mixed with aliphatic-aromatic copolyester and various types of additives, utilizes unique screw combination design and side feeding refueling design, improves the ageing property and the processing property of PBSA products, and meanwhile ensures that the fully biodegradable polyester material has excellent degradation property and aging property. The biodegradability of the material meets the use requirements of biodegradable plastics EN13432, and excellent membrane material mechanical property can be guaranteed after membrane blowing forming processing is performed.

The invention discloses a fault detection method for solar photovoltaic cell panels based on deep learning. The method includes the following steps: cleaning collected sequential current data of a photovoltaic cell panel; extracting the transverse and longitudinal features of the processed current data; generating a detection data set from the extracted features and the current value of the original cell panel; processing the data set through a convolution neural network to obtain deep features of current data; and learning the features of training data in time dimension through a long and short term memory model, thus completing fault detection of the photovoltaic module. The experimental verification of massive current data of power plants proves that the method has accuracy of above 90%in fault detection of photovoltaic cell panels and has practicability and convenience in deployment and application in power plants.

The invention discloses a bathroom cabinet. The bathroom cabinet comprises a cabinet body and an electric control box, wherein a first disinfection cavity capable of containing towels is formed in thecabinet body, and a first ultraviolet lamp is arranged in the first disinfection cavity; the electric control box is internally provided with an electric control board, a second disinfection cavity for containing toothbrushes and an air channel, the upper-stream end of the air channel is provided with a blower and a heater, the down-stream end of the air channel is communicated with the first disinfection cavity and the second disinfection cavity, and a second ultraviolet lamp is arranged in the second disinfection cavity; the first ultraviolet lamp, the blower, the heater and the second ultraviolet lamp are electrically connected with the electric control box. The towels and the toothbrushes are placed by using separate cavities respectively, cross infection of germs on the towels and the toothbrushes is prevented, the towels and the toothbrushes can be dried and disinfected in the cavities respectively, and convenience is brought to use.

The invention discloses a full-function docking station. The full-function docking station comprises a shell, and a main circuit board (4) and an auxiliary circuit board (7) which are arranged in theshell; the shell is composed of a rotary knob 1, a control panel 2, an upper cover 3, a supporting block 5, an auxiliary screw 6, a middle frame 8, a lower cover 9, a main screw 10 and supporting legs. The main circuit board (4) is provided with an uplink interface unit, a downlink interface unit, a USB3.0 interface unit, a small card interface unit, a large card interface unit, a power interfaceunit, a DP display interface unit, an HDMI display interface unit, a VGA display interface unit, an Ethernet interface unit, and a sound control unit; the auxiliary circuit board (7) is provided witha USB 2.0 interface unit, an audio interface unit, an audio adjusting unit, and an optical fiber interface unit; the sound control unit on the main circuit board is composed of four buttons and related circuits and used for achieving the sound control function. A plurality of audio gears are arranged on the audio adjusting unit on the auxiliary circuit board (7) and are switched along with the rotation of the audio adjusting unit, so that the function of switching scene modes is realized.

The invention provides a formula of pulp for producing paper straws. The pulp is prepared by mixing softwood pulp, hardwood pulp, recycled paper pulp and additives. Paper straws prepared from the pulphave high dry tensile strength and large dry elongation rate, has the wet tensile strength of 1Kn / m or more and wet elongation rate of 4 percent or more, cannot be softened if being soaked in water for half an hour or more, is environment-friendly, and can greatly meet the requirement of people for daily use.

The invention provides a temperature control device. The temperature control device comprises a box, a semiconductor part, a control circuit and a power supply part, wherein the box is provided with an opening allowing a user to put objects into the box or take the objects out of the box; the semiconductor part is arranged in the box for dividing an internal space of the box into a first heat exchange cavity and a second heat exchange cavity; a first heat exchange end of the semiconductor part is positioned in the first heat exchange cavity; a second heat exchange end of the semiconductor part is positioned in the second heat exchange cavity; the opening is communicated with the first heat exchange cavity; and the power supply part supplies electricity to the semiconductor part through the control circuit. The temperature control device solves the problem of inconvenience for keeping temperature and cold of objects in the prior art.

The invention relates to the field of water pumps, and particularly discloses an adjustable flow water pump. For the problem that an existing water pump cannot conveniently adjust the liquid flow according to needs, the following scheme is provided at present, the adjustable flow water pump comprises a base, a motor and an adjusting box are fixed to the top end of the base, an output shaft of themotor is in transmission connection with a transmission rod, one end of the transmission rod extends into the adjusting box and is fixedly provided with an impeller, a fixing cabinet is fixed to the side, away from the impeller, of the top end of the adjusting box, and four vertical rods are fixed to the top end of the fixing cabinet and are in sliding connection with a lifting plate; and the topend of the lifting plate is rotationally connected with a threaded rod, the top end of the threaded rod extends to the outer portion of the adjusting box and is fixedly provided with a handle, and anopening is formed in the bottom end of the fixing cabinet. The adjustable flow water pump is ingenious in design, reasonable in structure and simple in operation, the adjusting rod conveniently controls a baffle to rotate, the liquid flow of a water outlet of the water pump can be adjusted according to needs, flexibility is high, the daily usage requirement of people can be better met, and the adjustable flow water pump is suitable for popularization.

The invention discloses Ni-Zn high-strength cupronickel alloy and a preparing method thereof. The Ni-Zn high-strength cupronickel alloy is prepared from, by weight, 20-40 parts of Ni, 30-35 parts of Zn, 20-30 parts of Mn, 12-18 parts of P, 4-7 parts of Fe, 5-15 parts of Al and the balance Cu. The performance of the cupronickel alloy is higher, tensile strength and corrosion resistance can better meet the requirement of artware, the specific color intensity and hardness of cupronickel alloy can be maintained for artware produced in the later stage, and environment friendliness is higher and daily use requirements of people are better met. The cupronickel alloy contains zinc which can be dissolved in copper nickel in a solid state to generate a solution strengthening effect, and corrosion resistance is also realized. The cupronickel alloy has high strength and corrosion resistance, high elasticity, attractive appearance and low price, and cost can be saved.

The invention relates to a wheel carrier for an electric bicycle, which structurally comprises a support plate, as well as front rolling wheels and rear rolling wheels which are arranged at the bottom of the support plate, wherein the front and rear parts of the support plate are articulated with a front baffle and a rear baffle respectively; a front cushion block and a rear cushion block are arranged between the support plate and the front baffle, and between the support plate and the rear baffle respectively; cushioning angles of the front and rear baffles can allow a loaded wheel of the electric bicycle to be just contained in an opening angle bracket formed by the front baffle, the support plate and the rear baffle; and hurdles are arranged in the middles on the two sides of the support plate, and are fixing frames of a bundling belt of the wheel of the electric bicycle. The wheel carrier is convenient to carry with the bicycle, good in fixity, and high in follow-up performance, is not easy to overturn in a moving process, and can meet using requirements of extensive electric bicycle users, and the practicability is improved greatly.

The invention provides a wooden turnable cabinet. The wooden turnable cabinet comprises a cabinet body spliced by wooden plates; the cabinet body is at least internally provided with a movable and turnable layer plate; the layer plate comprises a supporting plate surface and a cover plate surface; the supporting plate surface is vertically spliced with the cover plate surface, and a rotary shaft is fixed to a splicing joint; a lock catch is arranged between at least one layer plate and the cabinet body; the lock catch comprises a magnetic column head and a locking part; the locking part comprises a lower toothed column, an upper tooted column and a spring, wherein the lower toothed column, the upper column and the spring are arranged in a sleeve; deep toothed grooves and shallow toothed grooves arranged at intervals are formed in the tube body end faces of the toothed columns; the same inclined angle alpha is arranged on the groove end faces of the deep toothed grooves and the shallowtoothed grooves; tooth heads cooperated with the deep toothed grooves and the shallow toothed grooves are arranged on the tube body end face of the upper toothed column; inclined angles alpha are arranged on the surfaces of the toothed heads; the spring further sleeves the upper toothed column; the upper toothed column acts on the sleeve through the spring to be meshed with the lower toothed column; a magnetic head is arranged on the cylinder body end face of the upper toothed column; the magnetic head penetrates into a center hole of the lower toothed column; the magnetic column head is inserted into the center hole of the lower toothed column to be attracted to the magnetic head.

The invention provides a serum urea measuring reagent, and applications thereof. The serum urea measuring reagent comprises a reagent R1 and a reagent R2; the reagent R1 comprises following raw materials: Capso, NADH, and EDTA.Na2; and the reagent R2 comprises following raw materials: HEPES, alpha-ketoglutaric acid, urase, glutamate dehydrogenase, EDTA.Na2, a reducing agent, and BSA. Reagent formula is optimized, and buffer pH is adjusted, so that effective buffering capacity is provided, NADH stability is improved, tool enzyme oxidation is reduced, component synergistic interaction and effectimprovement are achieved, a problem in the prior art that blank absorbance change rate stability is poor is solved, hospital clinical detection results are reliable, the application prospect is promising, and the market value is extremely large.

The invention discloses a titanium-niobium-zirconium alloy dental implant with high strength, low elasticity modulus and no toxicity and particularly relates to the field of medical materials. The main material used in the alloy dental implant is Ti-13Nb-13Zr alloy. A method for preparing the alloy dental implant comprises the following steps: S1, grinding powder, namely rotating and spinning outa prepared Ti-13Nb-13Zr alloy with plasma laser under argon protection to obtain spherical powder having a diameter of 10-60 microns, and performing vacuum packaging for later use; and S2, processingthe Ti-13Nb-13Zr alloy powder ground in the step S1 by utilizing a metal additive manufacturing process according to an implant appearance preset by a computer. The titanium-niobium-zirconium alloy dental implant is processed by a metal additive manufacturing (selective laser melting) process by adopting the Ti-13Nb-13Zr alloy, has the characteristics of high strength, low elasticity modulus and no toxicity and can meet daily use requirement of dental implants.

The invention relates to the technical field of electric vehicles, and discloses an electric vehicle stall protection device capable of automatically decelerating. The device comprises a rotating shaft, a shell fixedly sleeves the rotating shaft, a connecting pipe is fixedly connected to the interior of the shell, a connecting rod is movably connected to the interior of the connecting pipe, and abalancing weight is fixedly connected to the exterior of the connecting rod. A copper rod is fixedly connected to the interior of the balancing weight, an N pole is fixedly connected to the interior of the shell, an S pole is fixedly connected to the interior of the shell, and a second spring is movably connected to the interior of the shell. When the rotating shaft is in a normal rotating speed state, through the interaction among the rotating shaft, an electric wire, a spring I, a movable block and an electrorheological body, the rotating shaft does not influence the normal use of the electric vehicle when being in a normal rotating speed range, so that the situation that the use of a stall protection device limits the normal use of the electric vehicle is avoided, and the electric vehicle can meet the requirement of daily use.

The invention relates to a physiotherapy table and chair comprising a table and a chair; one side of the table is hinged to one front leg of the chair; a physiotherapy space receiving human legs is arranged in the table; an anion generator is arranged in the physiotherapy space; a plurality of pedicure rolling massage bars are evenly arranged in the lower portion of the physiotherapy space; the back of the chair is evenly provided with a plurality of magnetic therapy massagers; two sides of the chair are provided with armrests; a controller is arranged on the armrest; the pedicure rolling massage bars, the magnetic therapy massagers and the anion generator are respectively electrically connected with the controller. The lower portion of the physiotherapy space, the chair seat and the middle portion of the chair back are respectively provided with an far-infrared carbon fiber heating blanket electrically connected with the controller; the controller comprises a box formed by an upper cover and a lower cover; a control circuit board is arranged in the box; the box is provided with a button panel electrically connected with the control circuit board. The physiotherapy table and chair is simple in structure, reasonable in design, small in occupation space, and can satisfy daily usage demands while having the physiotherapy function in the same time.

The invention discloses an automatic fruit peeling device. The automatic fruit peeling device comprises a case, a transmission mechanism, a lifting mechanism, a peeling mechanism, a fruit rotating andfixing mechanism, a power mechanism and a controller, wherein the power mechanism is composed of a motor fixing disc, a driving motor and a storage battery; the lifting mechanism is composed of a lifting housing, a lifting bottom base, a first bearing, a lifting top base, a second bearing, a screw, a nut pedestal and a sliding bar; the fruit rotating and fixing mechanism is composed of a fruit plate, a third bearing, a rotating rod, an inserting needle, a bearing pedestal and a fourth bearing embedded into the bearing pedestal; the transmission mechanism is composed of a driving chain wheel,a driven chain wheel and a transmission chain; the peeling mechanism is composed of a peeling base, a retractable hollow rod, a first spring, a cutter base, a cutter plate, a cutting blade and a limiting mechanism. The automatic fruit peeling device has the advantages of being simple in structure and high in practicality.

The invention provides a flexible temperature control garment and a flexible temperature control hat. A garment temperature control circuit / a hat temperature circuit is arranged inside a garment body / a hat body, the garment body / the hat body is made of flexible semiconductor temperature control cloth, doped N-type semiconductor and P-type semiconductor cooling (or heating) particles are packaged inside the flexible semiconductor temperature control cloth, temperature sensors are arranged in the garment body / the hat body, the garment temperature control circuit / the hat temperature circuit carries out temperature regulation on the flexible semiconductor temperature control cloth according to the temperature collected by the temperature sensors mounted on the inner side and the outer side of the flexible semiconductor temperature control cloth, thus the temperature of the garment or the hat is controlled, and the demands for daily use of users are satisfied.

The invention discloses a logistics transportation system and method based on informatization management. The system comprises an internal office unit, a transportation management unit, a customer management unit, a financial settlement management unit, an operation statistics analysis unit and an information inquiry unit. The administrator logs in the internal office unit of the system through the username and the password and queries, modifies and deletes the internal user information of the system, and then inputs the password to enter the master control module and manage the logistics information according to the demand. The user logs in the personal user interface through the username and the password and queries and tracks the personal cargo transportation information. The research and development design of the invention makes the logistics information management clear, transparent, easy to operate and easy to manage, and different management details can be realized through optimization and combination of functional modules so that the management process is enabled to achieve the maximum degree of automation and information, the manual operation links can be automatically rechecked and thus the error rate of the logistics information management system is minimized.

The invention relates to a vegetable washer which comprises a base and a transparent cylinder. The base is disposed below the transparent cylinder. The bottom of the transparent cylinder is provided with a water outlet connected with a water outlet pipe. A transparent cylinder cover is hinged to the transparent cylinder and is provided with a water inlet and a water sprayer connected with a water inlet pipe. A rotary shaft and a bearing are disposed in the cylinder. The cross section of the rotary shaft is square, and a rotary disk is sleeved on the rotary shaft. A cleaning basket is disposed on the rotary disk. The outer periphery of the cleaning basket contacts with the inner wall of the transparent cylinder. The vegetable washer further comprises a cleaner. The cleaner is a disk having a central square hole. A plurality of mixing posts are arranged on the lower surface of the disk. The cleaner is sleeved on the bearing. A motor, a rotary disk speed regulating switch and a water outlet switch are arranged in the base. An output shaft of the motor is connected with the rotary shaft. The vegetable washer is provided with a plurality of washing manners, labor intensity is lowered, the vegetable washer can accord to different objects to be washed, water is saved, and the vegetable washer is worthy of wide promotion.

The invention specifically discloses a heatproof, transparent and impact-resistant PVDF (polyvinylidene fluoride) / PP (polypropylene) alloy material and a preparation method thereof. The addition of PVDF and a solubilizer to PP significantly improves the heat resistance and the impact resistance of a polymer, and the addition of additives improves the transparency of the polymer material and enhances the light transmittance of the polymer material. The heatproof, transparent and impact-resistant PVDF / PP alloy material is obtained by improving the performances of the current PP material, so theheat resistance, the transparency and the impact resistance of the alloy material are improved, and the alloy material well meets market demands.

The invention discloses white copper alloy. The white copper alloy comprises, by weight, 15%-20% of Ni, 5%-10% of Zn, 2%-5% OF Sn, and the balance copper. A preparation method of the white copper alloy includes the steps that 1% of manganese dioxide is added as an oxidizing agent firstly, and then the 15%-20% of Ni and 65%-78% of Cu are added, so that a mixture A is formed; the mixture A is heated for 2-4 hours till the temperature rises to 1300-1330 DEG C for melting, so that a mixed solution B is formed; the 5%-10% of Zn and 2%-5% of Sn are added to the mixed solution B, and the mixture is heated for 20-70 minutes till the temperature rises to 1330-1360 DEG C, so that a mixed solution C is formed; a deoxidizing agent is added to the mixed solution C for deoxygenation, so that a mixed solution D is formed, wherein phosphor copper alloy serves as the deoxidizing agent; and the mixed solution D is cooled at the rate of 10-20 DEG C per minute, oxide impurities on the surface are removed with a tool after cooling is completed, and finally the molten white copper alloy is formed. The white copper alloy can meet the requirement for crafts and has no harm to people, the manufacturing technique is simpler, and less cost is required.

The invention discloses a stone carving processing and repairing workbench with cleaning and residue collecting functions. The stone carving processing and repairing workbench comprises an operation workbench body, supporting leg frames are welded to the bottom of the operation workbench body, a water storage tank is fixedly installed at the top of the operation workbench body, and a limiting clamping ring is fixedly arranged on the right side of the water storage tank. A water pipe is fixedly arranged on the right side of the water storage tank. According to the stone carving processing and repairing workbench with the cleaning and residue collecting functions, a bearing is arranged, under the action of the bearing and a shaft rod, the shaft rod can conveniently drive a supporting plate to rotate, and then a stone carving fixed to the supporting plate can rotate; and meanwhile, people can well adjust the angle of the stone carving needing to be processed and treated conveniently, thesituation that workers need to process the stone carving around the stone carving is reduced, meanwhile, the difficulty of processing and treating the stone carving by people is lowered, the daily userequirements of people can be met, and convenience is brought to carving work of people.

The invention discloses a wearable massage device for nursing in the neurosurgery department. The device comprises a shell, silicone pads are arranged on the left side and the right side of an inner cavity of the shell respectively, a support base is inserted into the back side of the inner cavity of the shell, rubber balls are arranged on the front side surface of the support base from left to right and from top to bottom, sliding grooves are symmetrically formed in the left end surface and the right end surface of the back side of the inner cavity of the shell respectively, one end of a first spring is arranged on the front side of the support plate, the other end of the first spring is clamped with the inner wall of the sliding groove, first balls are arranged in the center of the backside of the support base from left to right, a motor is locked at the right end of the back side of the inner cavity of the shell through screws, and a circular rod is connected to an output end of the motor. According to the device, a user can carry and use a neck massager effectively and conveniently daily, convenience is brought to carrying and use, the practicability of the neck massager is increased, and the actual use demands are better met.

The invention discloses a fluorescent fiber color developing proportion debugging device for an anti-counterfeiting mark, which comprises a base, the top of the base is provided with a limiting groove, the inner wall of the limiting groove is fixedly provided with a case, the front surface of the case is fixedly provided with an observation window, and the left side of the case is welded with a handheld frame. According to the fluorescent fiber color developing proportion debugging device for the anti-counterfeiting mark, under the mutual cooperative use of a material tank, a connecting pipe, a first electromagnetic valve, a graduated tube, a material conveying pipe, a second electromagnetic valve, a fixing plate, a connecting opening, a discharging pipe, a valve and a material receiving barrel, raw materials are conveyed into the graduated tube through the material tank, and if the raw materials exceed the graduated tube, the valve can be turned on so that materials in the graduated tube can be collected into the material collecting barrel through the discharging tube, further, the quantity of mixed raw materials can be conveniently treated, redundant raw materials can be taken out, the quality of fluorescent color matching by people can be effectively improved, and the daily use requirements of people can be well met.

The invention provides a self-luminous mosquito expelling patch, which comprises a bottom layer, a mosquito expelling layer, a gel layer and a release layer which are sequentially superposed, wherein the mosquito expelling layer is arranged on the bottom layer; the gel layer is coated on the mosquito expelling layer; the release layer is stuck to the gel layer; the gel layer comprises a hydrogel body; the mosquito expelling layer consists of citronella oil, lavender, fructus anisi stellati, katsumade galangal seed and luminescent powder; and the mosquito expelling layer and the gel layer consist of the following components in percentage by mass: 20-30% of the hydrogel body, 5-8% of the citronella oil, 26-32% of lavender, 28-32% of fructus anisi stellati, 5-15% of katsumade galangal seed and 3-4% of luminescent powder. The self-luminous mosquito expelling patch provided by the invention is convenient to use and carry and has a lasting mosquito expelling effect; shortcomings in a conventional mosquito expelling product are overcome; and people's demands in daily use are fully satisfied. Meanwhile, through the split-type design of the mosquito expelling layer and the gel layer provided by the invention, problems that a mosquito expelling effect is affected and medicines penetrate into a human body in the case that the mosquito expelling layer and the gel layer are mixed are prevented.

According to a grooving machine for building construction, a traction plate is welded to the left side of a machine box, a water tank is formed in the top of the machine box, a water tank is fixedly installed on the inner wall of the water tank, and a water conveying pipe is fixedly installed on one side of the water tank. According to the grooving machine for building construction, a fixing rod, a first cutting part, a limiting block, a connecting spring, a first screw rod, a nut, a fixing sleeve, an annular limiting groove and a second cutting part are arranged and used in cooperation, the limiting block is clamped into the annular limiting groove for installation and fixation, and the distance between the first cutting part and the second cutting part can be adjusted; the fixing between the fixing sleeve and the fixing sleeve is enhanced by rotating the nut, so that quick adjustment can be carried out according to the grooving size required by people, the difficulty of adjusting the grooving size of the grooving machine by people is reduced, and the daily adjusting and using requirements of people can be well met; the convenience is brought to daily size adjustment of the grooving machine by people.

The invention discloses a rotary shaft punching device. The rotary shaft punching device comprises a base. Vertical plates are fixed to the two sides of the top end of the base. Two sets of cross rodsare fixed between the two vertical plates. Bidirectional threaded rods arranged horizontally are arranged between the corresponding cross rods. One bidirectional threaded rod is in threaded connection with two movable plates. Baffles are fixed to the other two sides of the top end of the base. Four guide rods are fixed between the two baffles. Two movable plates are slidably connected to the guide rods. The outer portion of each guide rod is sleeved with two springs. The springs are located between the baffles and the movable plates. Vertical rods are fixed to the four sides of the top end ofthe base. The rotary shaft punching device is ingenious in design, compact in structure and easy to operate and can be used for clamping and fixing the two ends of different types of rotary shafts conveniently. Thus, the application range of the rotary shaft punching device can be expanded. Meanwhile, the clamping and fixing effect of the rotary shaft punching device on the rotary shafts can be enhanced. The rotary shaft punching device can punch a hole in any position of each rotary shaft conveniently, can meet daily usage requirements of people and is high in flexibility and beneficial to improving the punching effect.