155results about How to "Prevent rust damage" patented technology

The invention discloses a construction method of a water drainage uplift pile which has the water drainage function and the uplift characteristic at the same time. The construction method is characterized by comprising the following steps: excavating a foundation pit, constructing a retaining wall, drilling holes, conducting slip casting and pouring a bearing platform. The construction method is simple, high in operability and obvious in economic benefit. A soil engineering bag is used, therefore, the diameters or the wall thicknesses of an impervious reinforced concrete pile and a pervious plain concrete pile can be effectively controlled, and corrosion and damage of underground water to reinforcing steel bars can be effectively avoided. Meanwhile, compared with other water drainage piles, the water drainage uplift pile has the advantages that the uplift bearing capacity can be provided, the pervious concrete part which can drain water can synchronously provide the functions of the compression bearing capacity and the soil lateral pressure, and the aims of water drainage and the uplift bearing capacity are effectively achieved.

The invention relates to a submersible flashlight capable of floating on the water, wherein a waterproof gasket and a light-admitting lens which are embedded and positioned inside a front cover, the front end of a cylinder body expands outside to form a holding chamber for holding a lamp cup, a screw thread section on the external edge of the holding chamber is combined with the screw thread of the front cover, a waterproof gasket is sleeved on the inner end of the screw thread section, a waterproof gasket is sleeved on the inner end of a screw thread section formed by the external edge of the bottom end of the cylinder body, the screw thread section is combined with the screw thread of a back cover, the inside of the back cover is provided with a switching group, the outside of the switching group is provided with a waterproof gasket, and the waterproof gasket is combined with the outside of the switching group through a through-hole on the back cover. By adopting the structure, when falling in water, the flashlight can not sink into the water bottom and can float on the water so that the person working above the water can fast and conveniently pick up the flashlight when dropping the flashlight, and the person who falls in water and is in danger can use the flashlight for calling for help.

The invention relates to an on-line plate blank weighing device, belonging to the technical field of weighing equipment. The on-line plate blank weighing device comprises a weighing platform, a hydraulic oil cylinder, a pressure sensor, a cooling water pipe and a control display device, wherein the weighing platform is positioned in a pit below a roller way; the hydraulic oil cylinder is provided with a piston rod, and the signal input end of the hydraulic oil cylinder and the signal output end of the pressure sensor are respectively connected with corresponding ports of the control display device; at least one pair of supports are respectively installed on terraces on both sides of the roller way, the pressure sensor is fixed on the supports, a connecting frame is arranged on the pressure sensor, the hydraulic oil cylinder is fixed on the connecting frame, one end of the piston rod, extending out of the hydraulic oil cylinder is connected with the weighing platform on which a bracket passing through a gap between rollers on the roller way at intervals is assembled, and a movable arm is arranged between the connecting frame and the supports; and one end of the movable arm is articulated with the supports, and the other end is articulated with the connecting frame. The on-line plate blank weighing device not only can prevent main parts from being rusted to damage, but also is convenient for inspection and maintenance.

The invention relates to an anti-corrosion and heat-insulation processing method for a petroleum pipeline. The anti-corrosion and heat-insulation processing method for the petroleum pipeline comprisesa bottom plate, a moving device and a coating device, wherein the moving device is arranged at the upper end of the bottom plate; and the coating device is arranged in the middle of the upper end ofthe moving device. The anti-corrosion and heat-insulation processing method for the petroleum pipeline provided by the invention can solve the problems that when an existing petroleum pipeline is subjected to anti-corrosion treatment, an anti-corrosion coating is poor in adhering effect and an anti-corrosion layer is easy to fall off since a treatment effect on the surface of the pipeline is poorand impurities such as oil stains, rust stains and welding slags on the outer surface of the pipeline cannot be treated cleanly, and meanwhile, when the surface of the pipeline is coated with the coating, since coating is carried out manually, the coating at the lower end surface of the pipeline is inconvenient to coat, a coating effect of the coating is poor and non-uniform, and the coating operation is easily missed; and the anti-corrosion and heat-insulation processing method for the petroleum pipeline provided by the invention has the advantages that the coating is good in coating effect and uniform in coating, the pipeline is prevented from being damaged, and the like.

The invention relates to intelligent transfer equipment for transport of a drilling machine. The intelligent transfer equipment comprises a vehicle head, a carriage and two driving mechanisms. The vehicle head is connected with the carriage. The two driving mechanisms are arranged under the vehicle head and the carriage correspondingly. According to the intelligent transfer equipment for transport of the drilling machine, the angle of a base in the transfer equipment is measured by an angle measuring mechanism, a support plate is kept in a horizontal angle through a lifting unit, and thus drilling machine components on the support plate are kept in a horizontal angle and prevented from sliding off. In addition, through rotation of a third driving motor, a clamping plate is driven to descend, thus two flashing boards get close to each other, a flashing cover is formed, the drilling machine components are protected against rain erosion and prevented from rusting damage, so that the practicability of the intelligent transfer equipment is improved.

The invention discloses an agriculture seed screening and separating device facilitating feeding and discharging. A bottom plate is included. A screening box is arranged at the top end of the bottom plate, and a control switch is embedded in one end of the screening box. The position, corresponding to the lower position of the control switch, of one end of the screening box is evenly provided withcleaning cover plates. The agriculture seed screening and separating device is scientific and reasonable in structure, and usage is safe and convenient; through running of a vibration motor, a screening plate can be driven to vibrate, agriculture seeds falling onto the screening plate can be vibrated and screened, the agriculture seeds with improper sizes can penetrate through a storage hopper tofall into a storage bin, the agriculture seeds are subjected to classified screening and separating according to the size, and the agriculture seeds with the proper size can be discharged through a discharging port. Through running of an exhaust fan, air near the screening box can be extracted into a dust removal bin, dust contained in air is subjected to classified filtration, filter net storageplates are pulled out by pulling filter net cleaning handles, and accordingly a first filter net, a second filter net and a third filter net are cleaned.

The invention discloses a protecting door for a numerically controlled machine tool. The protecting door comprises a door body. A lubricating oil tank is mounted on the top of the door body, a connecting wheel is mounted in a connecting notch, an adjusting wheel is mounted below the connecting wheel, a moving wheel is mounted below the adjusting wheel, a movable gear is mounted on one side of theconnecting plate through a rotary shaft, and a cleaning brush is coaxially mounted below the moving gear. The protecting door disclosed by the invention is scientific and reasonable in structure and safe and convenient to use. Sliding friction of the protecting door which moves is converted into rolling friction through the moving wheel, so that resistance subjected to the protecting door when theprotecting door moves is reduced, and meanwhile, lubricating oil of the lubricating oil tank is discharged through a liquid outlet hole of a hollow shaft and is effectively adsorbed to the surfaces of the adjusting wheel and the moving wheel, so that the side face of the moving wheel is coated with lubricating oil all the way when the moving wheel slides, the friction force of the protecting doorwhich moves is smaller, and the protecting door is pushed conveniently. Meanwhile, noise generated when the moving wheel slides is reduced, so that a high quality workshop environment is constructedconveniently better.

The invention discloses sponge foam production equipment in the production field of sponge foam. The sponge foam production equipment comprises a conveying bottom chain plate and side chain plates; the side chain plates make synchronous motion with the conveying bottom chain plate; each side chain plate comprises a plurality of side chain boxes; the interior of each side chain box is divided intoa driving chamber at the upper part and a transmission chamber at the lower part; a motor is arranged in each driving chamber; one side, facing the conveying bottom chain plate, of each transmission chamber is opened; transmission wheels connected with the output end of a motor is arranged in each transmission chamber; two transverse rotating shafts up and down are arranged on the outer side, facing the conveying bottom chain plate, of the transmission wheels; every two rotating shafts up and down are wrapped with annular edge films; the transmission wheels abut against the edge films; a plurality of air bags are arranged on the inner sides of the edge films in the vertical direction; a power source and a switch are arranged in air bag; the multiple power sources are connected in parallel;and the motors are connected the parallel power sources in series. Through innovation on the structure of an existing side chain plate, the problems that the top of a sponge foam finished product subjected to horizontal and continuous foaming production is arch and is not flat can be solved well.

The invention discloses an air blowing power device. The air blowing power device comprises a main shaft, a wind wheel, a plurality of fans, a plurality of air injection air bags and guide air channels corresponding to the fans respectively. The wind wheel is installed on the main shaft, the guide air channels are formed around the wind wheel, and the fans blow air to the wind wheel through the guide air channels. The air injection air bags are provided with air inflation ports and air injection ports, the air inflation ports are connected with an air inflation device, the air inflation ports are connected with the guide air channels, and the air injection direction is the same with the airflow direction of the guide air channels. The fans and the air injection air bags blow the wind wheel to rotate, and the wind wheel drives the main shaft to rotate. The fans and the air injection air bags blow air to the wind wheel to drive the wind wheel to rotate, then the wind wheel drives the main shaft to rotate, the air blowing power device is suitable for wind generators and guarantees that the wind generators can operate continuously to generate power no matter whether it is windy or breezy, and therefore the requirement for continuous power supply is met.

The invention discloses a drip-proof shower head capable of quickly draining residual water. The drip-proof shower head comprises a rear cover, a water outlet face cover, a water distributing cavity,an opening-closing device, wherein the rear cover is provided with a water inlet; the water outlet face cover is provided with a first water outlet hole and a second water outlet hole; the water distributing cavity is formed between the rear cover and the water outlet face cover; the opening-closing device comprises a first plugging piece used for opening and closing the second water outlet hole so as to open and close the communication between the second water outlet hole and the water distributing cavity; and the water distributing cavity communicates with the first water outlet hole. When the shower head is opened, the opening-closing device closes the second water outlet hole, and water enters the water distributing cavity from the water inlet and flows out from the first water outlethole; and when the shower head is closed, the opening-closing device opens the second water outlet hole, so that residual water in the water distributing cavity can be discharged from the second wateroutlet hole. By the adoption of the technical scheme, residual water in an inner cavity can be rapidly discharged after water supply of the shower head is cut off, continuous water dripping of the shower head is prevented, large-particle impurities of the shower head are rapidly discharged, dirt is removed, and water outlet holes of the shower head are prevented from being blocked.

The invention discloses a water conservancy and hydropower station water retaining dam with a mud-sand separating function. The water conservancy and hydropower station water retaining dam comprises awater dam body and a tunnel flow pass structure located in the water dam body. A lifting sluice valve mechanism is mounted at the outlet end of the tunnel flow pass structure. An impurity filter device and a mud-sand separating device are arranged on the outer side surface of the lifting sluice valve mechanism. When the water conservancy and hydropower station water retaining dam with the mud-sand separating function is used for storing water, the tunnel flow pass structure is arranged at the bottom of the water dam body due to sand and mud sediment, mud and sand mixtures can be filtered through the impurity filter device when being discharged out of water outlets corresponding to the tunnel flow pass structure, large-particle impurities mixed in the mixtures are removed, then mud and sand are separated through the mud-sand separating device, water with the impurities removed is then discharged into the water dam body, and the mud and sand are separated for selling or construction purposes.

A composite insulated switchgear cabinet comprises a switchgear cabinet body, a switchgear cabinet door, a base and a connection box. A dehumidification plate is arranged on the switchgear cabinet body. An insulation board is arranged in the switchgear cabinet body. A moving member is in threaded connection to a bidirectional threaded rod. A first rotating member is rotatably connected to the switchgear cabinet body and the moving member. A fixing rod is disposed on the switchgear cabinet body. Sliding members are slidably disposed on the two ends of the fixing rod. An elastic member is connected with the two sliding members. A second rotating member is rotatably connected to the sliding members and a connecting member. A universal wheel is arranged on the connecting member. The connectionbox is arranged on the switchgear cabinet body. The output end of a motor is connected to an output shaft. The output shaft is in driving connection to the first rotating shaft. A first rotating shaft is in driving connection to the second rotating shaft. The second rotating shaft is connected to a fan. The composite insulated switchgear cabinet can be lifted and lowered. It is convenient to repair, inspect and the like the inside of the switchgear cabinet. The composite insulated switchgear cabinet has good moisture-proof and heat-dissipating effects, good cushioning shock absorption performance and good flexibility, and can protect the internal devices.

The invention relates to a prefabricated concrete structure interlayer seismic isolation method. The method comprises the following steps: step 1, forming an upper connecting hole in an upper concretecolumn, and forming a lower connecting hole in a lower concrete column to prepare a rubber seismic isolation column; step 2, inserting the lower end of the rubber seismic isolation column into the lower connecting hole; step 3, fixing the upper concrete column above the lower concrete column in a liftable manner; step 4, inserting the upper end of the rubber seismic isolation column into the upper connecting hole; step 5, overlapping lower fixing claws on a lower hole portion inner flange and overlapping upper fixing claws on an upper hole portion inner flange; step 6, pouring concrete in theupper connecting hole and pouring concrete in the lower connecting hole; and step 7, dismantling a support structure after the concrete in the upper connecting hole and the concrete in the lower connecting hole are solidified. By adopting the prefabricated concrete structure interlayer seismic isolation method provided by the invention, the problem of a poor seismic isolation effect between layers of the existing prefabricated concrete structure is solved.

The invention discloses an electric linear actuator with a sealed lubrication and overload protection structure. The electric linear actuator comprises a motor, a sliding sleeve, a screw mechanism, a ripple expansion pipe, a pull-pressure sensor and a controller, which are in electrical connection. A support device of the electric linear actuator is arranged in the front end of the sliding sleeve; the support device is simple in structure, small in size and light in weight; the manufacturing cost of an electric cylinder can be greatly reduced; a screw is sealed through the ripple expansion pipe; and the problem that the screw is corroded and damaged due to the contact of moisture and the screw can be solved. The pull-pressure sensor is arranged at the end part of the sliding sleeve; and when an object driven by the electric cylinder in the working process is blocked to increase a load of the electric cylinder and the pull-pressure sensor detects that the load of the electric cylinder is increased to an ultimate load, the controller controls the motor to stop working, so that the electric linear actuator can play an overload protection role in the electric cylinder; overload damage is avoided; and the lifetime of the electric cylinder is prolonged.

The invention discloses a tool rack for building construction. The tool rack comprises a supporting shelf and a base, hanging rods are distributed at the inner side of the supporting shelf at equal intervals, uniformly-distributed hanging hooks are arranged on the hanging rods, a slide rod is arranged at the inner side of the top of the supporting shelf, a slide block is slidably arranged on the slide rod, a telescopic lamp post is installed on the slide block, an illumination lamp is arranged at the top of the telescopic lamp post, cleanout fluid tanks and cleaning tables are arranged on theside walls of the supporting shelf, tool kits are connected to the top of the base through rotary shafts, and hot air blowers are arranged on the side walls of the tool kits. By means of the tool rackfor the building construction, tools are conveniently cleaned after being utilized, and cleanliness of the tools is maintained; through the hot air blowers arranged on the side walls of the tool kits, the cleaned tools can be effectively and cleanly dried, and it is prevented that the tools are rusted and damaged; meanwhile, the tool rack is simple in structure and flexible to move, the functionof rotating the tool kits can be achieved, and workers conveniently store and take the tools from different angles.

The invention discloses a dynamoelectric linear actuator with a sealing and lubricating, shock-absorbing and overload protection structure. The dynamoelectric linear actuator comprises a motor, a sliding sleeve, a screw rod and a threaded sleeve matched with the screw rod; a rubber buffer cushion is arranged between the sliding sleeve and the end plane of the threaded sleeve; and an electric cylinder also comprises a corrugated extension tube, a pull pressure sensor and a controller. According to the dynamoelectric linear actuator, the screw rod is sealed through the corrugated extension tube, so that the problem that the screw rod is rusted and damaged due to the contact between steam and the screw rod can be avoided; by setting the rubber buffer cushion between the sliding sleeve and the threaded sleeve, the axial impact force on a thread pair of a screw rod mechanism can be buffered so as to avoid the damage of the thread pair caused by the axial impact force; and by setting the pull pressure sensor in the end part of the sliding sleeve, when the pull pressure sensor detects that the load of the electric cylinder is increased to the ultimate load, the controller controls the motor to stop working so as to perform the overload protection on the electric cylinder to avoid the overload damage of the electric cylinder and to prolong the service life of the electric cylinder.

The invention discloses a building connecting steel structure capable of being installed quickly. The building connecting steel structure comprises a main beam rod, a first cross beam rod and first connecting bolts, inserting pieces are installed on the outer side of the main beam rod, and first connecting holes are reserved on the inserting pieces; a second connecting hole and a third connectinghole are both reserved on the main beam rod, the first cross beam rod is arranged on the outer side of the main beam rod, the first cross beam rod is connected with a first installation plate, and fourth connecting holes are formed in the first cross beam rod; and a limiting hoop is connected with the main beam rod through a seventh connecting hole, the third connecting hole and a second connecting bolt, a second cross beam rod is installed on the outer side of the main beam rod, and the second cross beam rod is located below the first cross beam rod. According to the building connecting steelstructure capable of being installed quickly, traditional welding connection is avoided, slow construction process is avoided, and meanwhile, welding bubbles are prevented, thus the stability of connection of the steel structure is indirectly improved, and structural deformation of connecting points is avoided.

The invention relates to the technical field of auxiliary devices for school environmental protection management and in particular relates to a school canteen waste liquid treatment device. Leftoversin canteen waste liquid can be treated in advance and a metal filtering screen is prevented from being blocked; the treatment capability is improved and the practicability is improved; the metal filtering screen is convenient to detach and is convenient to clean and replace, and the utilization limitation is reduced; the school canteen waste liquid treatment device comprises a treatment box, wherein a treatment cavity is formed in the treatment box; the device further comprises a stirring box, a stirring motor, an upper driving gear, a lower driving gear, four groups of auxiliary shafts, fourgroups of upper driven gears, four groups of lower driven gears, an upper separation plate, a lower separation plate, a plurality of groups of first knife-shaped stirring paddles and a plurality of groups of second knife-shaped stirring paddles; the device further comprises a left mounting plate, a left thread pipe, a right thread pipe, a right mounting plate, a left thread rod, a right thread rod, a left supporting plate, a right stopping plate, a stopping door and a locking device; the left mounting plate and the right mounting plate are located above the metal filtering screen and the leftend of the left mounting plate is connected with a left-side inner wall of the treatment cavity.

The invention discloses a photoelectric corrective mechanism adopting a rust-proof electric cylinder for a coil slitting machine. The photoelectric corrective mechanism comprises an unreeling roller, a support, guide tracks, a photoelectric sensor, the electric cylinder and a controller, wherein the electric cylinder comprises a corrugated expansion pipe connecting a bearing pipe and a thread bushing; and the photoelectric sensor comprises a cover plate, tubular supporting columns and screws arranged inside the tubular supporting columns. According to the photoelectric corrective mechanism, the deviation conditions of edges of coils can be detected constantly through the photoelectric sensor, the correction is carried out in time, the correction accuracy is high, and the working efficiency of the correction is high; screw rods are sealed through the corrugated expansion pipe, so that water is prevented from contacting the screw rods and causing corrosion and damage of the screw rods, and the failure rate of a correction device is decreased; the photoelectric sensor supports the cover plate through the tubular supporting columns, during installation, both the cover plate and a circuit board share the same connecting screws, the number of the screws is small, and the working efficiency for installation is high; and the sealing cover plate is fixed on the tubular supporting columns through screws, during manufacturing, threaded holes are not required to be formed in the U-shaped casing, and the manufacturing cost is low.

The invention relates to the field of pipeline lifting, in particular to a conveniently buried pipeline lifting device, which comprises a sleeve, a shell, a lifting structure, an adjusting structure,an auxiliary structure and a protection structure, wherein the adjusting structure is pressed, so that the power for work of the adjusting structure drives the lifting structure to work, the lifting structure moves up to push a pipe to lift, and one pipeline is lifted to the same height of one end of the other pipeline to benefit fixed connection between the two pipelines for pipeline laying and burying; the adjusting structure blows gas to the lifting structure in a working process in order to cool the lifting structure, so that the lifting structure works to preform pipeline lifting; after the lifting structure works and moves up, the protection structure is intermittently pushed to work, so that the protection structure intermittently injects lubricating oil into the surface of the lifting structure, the lubricating protection is performed on the lifting structure, meanwhile, the lubricating oil is saved, and the excessive waste in a lubricating process of the lubricating oil is prevented.

The invention relates to the field of vehicle production, in particular to a feeding mechanism for vehicle cold stamping. The feeding mechanism comprises a supporting plate, a lifting device, a limiting device and a cleaning device. A conveying belt is arranged on the supporting plate, the right end face of the supporting plate is fixedly connected with a controller, and the lifting device comprises first landing legs and scales. In the feeding mechanism, through the arranged lifting device, when the feeding mechanism is used, second bevel gears are driven by rotate by rotating first handles,the second bevel gears drive first bevel gears to rotate, the first bevel gears drive first threaded shafts to rotate, the first threaded shafts drive second landing legs to move, the second landing legs stretch out of the first landing legs, the height of the feeding mechanism is adjusted to correspond to the height of a cold stamping device, thus, the height of the feeding mechanism can be adjusted, the feeding mechanism can be suitable for the cold stamping device at different heights, and the use range is widened.

The invention relates to a control method and a control device for an air compressor for a vehicle. When an automobile is started, or the air pressure of an air bag is detected in an operating processof the automobile, the air compressor operates for a period of time continuously, so that the temperature of lubricating oil of the air compressor is improved, and water accumulated in the lubricating oil is discharged, and accordingly the condition that the inner structure of the air compressor is corroded and damaged as the lubricating oil is emulsified is avoided, a body and a bearing are lubricated reliably, and the service life of the air compressor is prolonged.

The invention proposes a portable depth measuring device for water level of a dam. The depth measuring device includes a ball breaker piece, a measuring tape and a receiving system, wherein the measuring tape is a measuring tape which is flexible and capable of curling; the ball breaker piece is fixed to the end of the measuring tape; a needle cavity with a fixed needle is installed in the ball breaker piece; the needle cavity is provided with an inlet hole and a water vent hole; one end of the needle is located in the needle cavity, and the other end of the needle is electrically connected with a cable in the measuring tape; the cable is electrically connected with the receiving system; when a sounding operation is carried out, the measuring tape moves to a water surface under the traction of the ball breaker piece, and the receiving system is electrified to the needle through the cable, if the ball breaker piece is immersed in water to make the needle in the needle cavity contactingthe water, the receiving system sends out a notification message of contacting the water surface. The portable depth measuring device for the water level of the dam has the advantages of being good inprotective ability to adapt to a fast measuring and using environment, not easy to be wound, fast in measuring speed and good in precision.

The invention belongs to the field of shoemaking technologies and particularly discloses a shoe-making refrigerating machine. The shoemaking refrigerating machine comprises a top cover and a supporting framework arranged on the lower surface of the top cover, wherein cold air output heads are uniformly installed on the top cover and extend to the lower side of the top cover, a conveying belt mechanism is fixedly connected to the lower surface of the top cover through screws, hook components are arranged on the conveying belt mechanism, and a shoe supporting frame is hung on each hook component. According to the shoe-making refrigerating machine, through cooperative use of a condensed water collection trough and a condensed water discharging port, condensed water in the supporting frameworkcan be collected and discharged through the condensed water discharging port, and the situation that the condensed water causes corrosive damage to the internal conveying belt mechanism is avoided; and through cooperative use of a guide plate and a guide wind wheel, blown cold air can be guided, so that the cold air flows in the installation framework and can be uniformly dispersed to all positions in the installation framework, and the refrigerating function on shoes is good.

The invention provides an external thread protector with a flat-top back cover, which is used for protecting a thread at the end of a steel pipe. The thread protector comprises a steel jacket and a plastic inner lining arranged outside the steel jacket, wherein the top of the steel jacket is provided with an inwards drawn arc, a circular bead is arranged between the arc and the plastic inner lining, the upper part of the plastic inner lining is provided with a seal top, the inwards and excessively concave back cover is arranged at the downward bottom of the back cover, and a transition platform is arranged between the back cover and the top of the steel jacket near to the circular bead; a contact part between the inner part of the plastic inner lining and the outer wall of the steel pipe is provided with the thread; and a disassembly hole is arranged on the seal top. The thread protector has the beneficial effects that due to the hermetic seal top, the steel pipe can be well sealed by the protector, so that not only can the steel pipe thread be protected, but also the corrosion damage of water in the steel pipe to the thread can be avoided.

The invention discloses an adjustable profile steel hanging basket. The adjustable profile steel hanging basket solves the technical problems that in the prior art, during equipment mounting or adjustment on profile steel, for operating personnel, the safety performance is low, and moving is inconvenient. The adjustable profile steel hanging basket comprises a hanging basket main body and hangingmechanisms, each hanging mechanism comprises a mounting frame mounted on the hanging basket main body and a bearing mounted on the corresponding mounting frame, the hanging mechanisms are arranged inpairs, and the same pair of hanging mechanisms are hung on the profile steel in a matched mode. According to the adjustable profile steel hanging basket, the structure is simple, the design is scientific and reasonable, the use is convenient, and the safety performance and the convenience performance of the operating personnel during equipment mounting or adjustment on the profile steel can be effectively improved.

The invention discloses a limiting device for a prefabricated stair sliding support, and is used for limiting the relative sliding movement between a prefabricated concrete stair and a stair beam. Thelimiting device comprises a pull linkage rod (1) and an embedded steel pipe (2), wherein the embedded steel pipe (2) is pre-embedded in the lower part of a stair section platform of the prefabricatedconcrete stair, one end of the pull linkage rod (1) is anchored in the stair beam, the other end of the pull linkage rod (1) is sleeved in the embedded steel pipe (2), and the inner wall of the embedded steel pipe (2) is provided with a contraction-limiting mechanism (21) for limiting the longitudinal contraction of the pull linkage rod (1). According to the limiting device for the prefabricatedstair sliding support, the component stress design is consistent with the deformation direction, the stress is reasonable, and the strength is high; main components are internally arranged, so that appearance of a building is not affected, the durability is good, and the space occupation is small; and the device is easy to construct and install, and the construction connection is reliable.

The invention relates to the field of modern equipment for the agricultural livestock breeding industry, and discloses a feces removal device for agricultural livestock breeding. The feces removal device comprises a main device body, and a feeding bin opening is formed in the outer surface of the upper end of the lower part of the main device body. According to the feces removal device for agricultural livestock breeding, through the cooperation of a screw and a liquid outlet, solid feces and liquid feces can be effectively separated, and subsequent treatment is facilitated; meanwhile, throughmoving idler wheels and a dragging handle, the device can be conveniently dragged and moved; through a supporting structure, the device can be well fixed and supported to work stably, the feces removal device can penetrate through a clapboard to directly remove feces out of a compartment, and the cleanliness of the feeding and living environment of livestock is guaranteed; through a motor base and a protection cover, a motor and other equipment are protected, the device cannot be corroded or damaged by a humid environment, the screw in the device can be conveniently washed to facilitate worknext time, the surrounding environment can be disinfected and sterilized, and foul smell can be removed.

The invention discloses an inner hexagon bolt used on an automobile hub. The inner hexagon bolt comprises a bolt head mechanism, an elastic ring, a flange face and a screw mechanism. The bolt head mechanism comprises a hexagon bolt head and a waterproof tabletop. An inner hexagon bolt hole is formed in the middle portion of the hexagon bolt head. The screw mechanism comprises an installation section, a smooth-surface screw section, a threaded section and a guide polished rod section. Multiple tooth ripple grooves are formed in the lower surface of the flange face. According to the inner hexagon bolt, by arranging the elastic ring, certain tensile force can be kept between two connected parts all the time by the inner hexagon bolt through deformation of the elastic ring, and connection stability is ensured; the guide polished rod conducts perpendicular guiding before the bolt and a threaded hole are engaged, perpendicular stress of the bolt is ensured, and the probability of thread sliding is lowered; by arranging the waterproof tabletop above the flange face, it is avoided that because of erosion of rainwater, the bolt rusts and is damaged; and by forming the tooth ripple grooves in the lower surface of the flange face, the connection stability between the two connected parts is further ensured.

The invention provides a printing machine suitable for kitchens. The printing machine comprises a housing, a power switch, a printing machine control circuit and an automatic drying and humidifying device. The power switch is arranged on the housing. The printing machine control circuit is arranged in the housing. The automatic drying and humidifying device is electrically connected with the printing machine control circuit, and comprises a box body for accommodating drying agents. A ventilation component, which is switched to be closed when the printing machine operates, is arranged on the box body. The printing machine for the kitchens, provided by the invention, is provided with the automatic drying and humidifying device, the automatic drying and humidifying device comprises the box body used for accommodating the drying agents, and the ventilation component switched to be closed when the printing machine operates is arranged on the box body. When the printing machine is in the operation state, the ventilation component positioned on the box body is closed, and after the operation of the printing machine is completed, the ventilation component is automatically opened, and air and parts in the printing machine are dried and humidified with the drying agents in the box body, so that the printing machine is prevented from being damaged due to rusting.