1622results about How to "Easy height adjustment" patented technology

The invention discloses a lithium hexafluorophosphate crystallization and separation device, and relates to the technical field of lithium hexafluorophosphate crystallization and separation, the lithium hexafluorophosphate crystallization and separation device comprises a fixed seat and support legs symmetrically fixed on the periphery of the bottom of the fixed seat, the interior of the fixed seat is fixedly connected with an outer box body, and the lithium hexafluorophosphate crystallization and separation device further comprises an air inlet, an air outlet and an air outlet, an air outlet is formed in the other side of the top of the outer box body; the liquid outlet is formed in the middle of the bottom of the outer box body; the outer barrel body is installed in the outer box body, an inner barrel body is connected to the interior of the outer barrel body in a clamped mode, and a cleaning brush is installed on the lower portion of the partition plate; the swing mechanism is arranged on one side of the outer barrel; and the cleaning mechanism is arranged below the partition plate, and the problems that a lithium hexafluorophosphate solution in the device is in direct contact with the barrel for a long time, so that the barrel is easily corroded and damaged, and large lithium hexafluorophosphate crystals are still possibly contained in the device during discharging, so that the subsequent smooth discharging of the lithium hexafluorophosphate crystals is inconvenient are solved.

The invention relates to the technical field of three-dimensional surveying and mapping, and particularly discloses a laser scanning three-dimensional surveying and mapping device which comprises an assembly platform, one side of the top of the assembly platform is slidably connected with a sliding block, and one side of the top of the sliding block is fixedly connected with a fixing support; through the arrangement of the universal ball, the laser scanner, the negative pole magnet, the first arc-shaped iron core and the second arc-shaped iron core, the telescopic rod is kept in the shortest state through the connecting spring, the laser scanner is used for conducting three-dimensional surveying and mapping on an object below, and the first arc-shaped iron core is connected with a power source to form the positive pole magnet; the second arc-shaped iron core is connected with a power supply to form a positive pole magnet, so that the second arc-shaped iron core is connected with the negative pole magnet in an adsorption manner, and the longitudinal angle of the telescopic rod and the laser scanner at the bottom end can be adjusted; therefore, the effect of adjusting the angle of the laser scanner to scan an object is achieved.

The invention discloses a hardness testing device for cured resin for dental implant molding, and relates to the technical field of resin hardness testing. Comprising a test installation part, a driving butt joint part is installed on the test installation part, and a closed butt joint part is installed on the test installation part; the closed butt joint piece is used for driving the butt joint piece in a negative pressure suction mode. The interior of the driving butt joint piece is used for injecting resin; an adhesive force detection piece is mounted on the test mounting piece; the adhesive force detection piece is used for upwards moving and jacking the cured resin; a middle curing test piece is mounted on the adhesive force detection piece; the grinding control piece can be used for grinding the surface of the resin when the hardness of the resin is detected, so that the detection surface of the resin is vertical to the hardness detection ejector pin, and the accuracy of a detection value is ensured; the problem that an existing cured resin hardness testing device for tooth implantation forming is inconvenient to automatically control a hardness needle to be perpendicular to a resin detection surface during resin hardness detection is solved.

The utility model relates to the technical field of electric control cabinets, and discloses an electric control cabinet convenient for multi-person cooperation maintenance, which comprises a cabinet body, a pushing device and a suspension device, the pushing device is positioned inside the cabinet body, the suspension device is positioned on the inner wall of a cabinet door of the cabinet body and is used for suspending a maintenance tool, the pushing device comprises a motor, and the motor is connected with the cabinet door. A chain assembly is arranged at the output end of the motor, and long screws are arranged at the four corners of the chain assembly. According to the electrical control cabinet convenient to overhaul, the motor is started, the motor drives the long screw rod to rotate through the chain assembly, the long screw rod drives the mounting plate to push forwards, so that the mounting plate drives the mounted electrical components to move to the cabinet door of the electrical control cabinet for overhaul, the mounting panel can be moved to the front of the cabinet door, the space of personnel is sufficient, and blockage is avoided; multi-person cooperation maintenance is facilitated, and the maintenance efficiency is improved.

The utility model provides an electric pipeline cutting machine, and belongs to the technical field of pipeline cutting. The electric pipeline cutting machine comprises a main body, a cutting mechanism and a clamping mechanism, the main body comprises an L-shaped base, a box body is installed at the upper end of a vertical plate of the L-shaped base in an embedded mode, the inner wall of the box body is rotationally connected with an inner gear ring through a bearing, and a connecting ring is installed on the outer side of the inner gear ring; the end, away from the connecting ring, of the circular plate is rotationally connected with a first rotating shaft and a second rotating shaft, a second gear is installed outside the first rotating shaft, a support is installed on the side, away from the circular plate, of the second gear, a second motor is installed outside the support, and the output end of the second motor penetrates through the support and is sleeved with a saw blade. Transverse plates are movably inserted in the pair of mounting plates, the upper ends of the transverse plates are movably connected with a pair of U-shaped seats, and the upper ends of the pair of U-shaped seats are provided with pressing wheels, the practicability of the pipeline cutting machine can be effectively improved, and the pipeline cutting machine has high practical value.

The utility model is applicable to the technical field of injection molding machine moulds, and provides an injection molding machine mould capable of being quickly cooled, which comprises a support component, an upper backing plate and a lower backing plate, the support component comprises a base, a portal frame is mounted on the base, the upper backing plate is slidably connected with the portal frame, and a hydraulic push rod for pushing the upper backing plate to move is mounted on the portal frame. The height of the upper base plate is convenient to adjust, meanwhile, the lower base plate is fixedly installed on the portal frame, a plurality of cooling fins are arranged on the lower surface of the lower base plate, and the cooling efficiency of the lower base plate is improved through the cooling fins; a water storage tank for storing cooling water is arranged in the base, the cooling water is pumped through a first water pump and conveyed into a water inlet tank and a water drainage tank on the lower base plate, the lower die base on the lower base plate is cooled, and the cooling efficiency of plastic products in a cavity is improved. A plurality of air inlet fans are installed on the upper base plate, the plastic products are cooled through ventilation and air cooling, water stains on the upper die base and the lower die base are blown, and the water stains are prevented from remaining on the die.

The utility model relates to the technical field of wheel assembly and transportation, and discloses a transportation protection device for wheel assembly. The transportation protection device for wheel assembly comprises a protection box, an air bag seat is movably installed at the bottom of the inner surface of the protection box, grooves are fixedly formed in the upper portions of the two sides of the inner wall of the protection box, fixed rods are fixedly installed on the inner walls of the grooves, movable rods are movably connected to one sides of the fixed rods, and the movable rods are movably connected to the other sides of the movable rods. And a connecting rod is fixedly installed on one side of the movable rod, a supporting rod is movably connected to the lower portion of the connecting rod, pressing plates are fixedly installed on the two sides of the supporting rod, a partition plate is movably connected to the upper portion of the protection box, and an air bag cover is fixedly installed below the partition plate. The air bag structure is matched with the protection box for use, so that wheel assembly parts with different thicknesses and sizes are protected in the protection box for transportation and use, the wheel assembly protection practicability is improved conveniently, the application range of the transportation protection device is widened, and the wheel assembly working efficiency is improved conveniently.

The invention discloses a film surface defect detection device, and relates to the technical field of film surface defect detection. According to the film surface defect detection device, a collection device comprises a bottom plate, an adjusting assembly, a lifting assembly and a cleaning assembly, the adjusting assembly is arranged on the top surface of the bottom plate, the lifting assembly is arranged on the bottom surface of the adjusting assembly, the cleaning assembly is arranged on the bottom surface of the lifting assembly, and the adjusting assembly comprises a first concave plate fixed to the top surface of the bottom plate. A worker starts a first servo motor, the first servo motor drives a lead screw to rotate, and the lead screw can drive a nut seat and an annular plate to slide, so that the annular plate can drive an industrial CCD camera to slide, and rapid adjustment according to actual application is facilitated; and the lifting column slides, so that the lifting column can drive the fixed plate and the industrial CCD camera to slide, and the height of the industrial CCD camera is convenient to adjust.

The utility model discloses an operation platform suitable for drilling and blasting of an extra-small section tunnel, which comprises an operation bedplate, a first support plate and a second support plate, the bottom of the operation bedplate is fixedly connected with a lifting device, the bottom of the lifting device is fixedly connected with a base, the first support plate is fixedly connected with a first electric push rod and a support rod, and the second support plate is fixedly connected with a second electric push rod. The top end of the first electric push rod is rotatably connected to the side, close to the center of the working platen, of the bottom face of the second supporting plate, the top end of the supporting rod is rotatably connected to the middle of the bottom face of the second supporting plate, and a drilling and blasting mechanism is arranged at the top of the second supporting plate. The position height of the pneumatic hammer drilling machine can be conveniently adjusted, the drilling direction of the pneumatic hammer drilling machine can be conveniently adjusted, the workload of workers is relieved, and the construction efficiency is improved.

The utility model provides natural gas leakage real-time monitoring equipment which comprises an L-shaped plate, a mounting plate is arranged on the front side of the L-shaped plate, a monitoring equipment body is arranged on the front side of the mounting plate, a mounting block is fixedly mounted on the rear side of the monitoring equipment body, insertion holes are formed in the upper side, the lower side, the left side and the right side of the mounting block, and the left side and the right side of the mounting block are fixedly connected with the L-shaped plate. A fixing mechanism is arranged on the front side of the mounting plate, the fixing mechanism comprises a box body, a lifting mechanism is arranged at the bottom of the L-shaped plate, the periphery of the monitoring equipment body can be synchronously fixed through the fixing mechanism, and when being influenced by external force factors, the monitoring equipment body cannot fall off from the unfixed side; compared with the mode that only the upper side and the lower side are fixed, the mode that the periphery is fixed synchronously can improve the stability of the monitoring equipment body in the installation process to a large extent, and by arranging the lifting mechanism, the height of the monitoring equipment body can be conveniently adjusted, and meanwhile the convenience in the installation process is improved.

The utility model discloses a carrying device based on glassware, and relates to the technical field of glassware production, the carrying device comprises a device main body, a first connecting block, a tray, a supporting plate and a screw rod, one side of the device main body is welded with a handrail, and one side of the top of the device main body is rotatably connected with two ends of the first connecting block; when the device is used for transferring the glassware, the glassware is placed in the grooves in the trays, so that the glassware bodies are distributed among the air bags, after all the trays are placed, air is pumped into the air bags through the air pump, and then the glassware is transferred through the air pump. According to the device, the air bag can be expanded, then all vessels can be rapidly fixed, the use convenience of the device is improved, carrying can be conducted through the universal wheels, stability can be kept in the carrying process, and the vessels cannot be collided and damaged.

The utility model provides a sealing structure of a rotary air preheater, and belongs to the technical field of air preheaters. The rotary air preheater sealing structure comprises an air preheater body and a lifting structure, the air preheater body comprises a shell, a main shaft, a connecting plate, an upper sector plate, a lower sector plate, a rotor and a sealing piece, the main shaft is connected with the shell, the connecting plate is connected with the main shaft, the upper sector plate is hinged to the connecting plate, the lower sector plate is hinged to the rotor, and the lifting structure is connected with the shell. The lower sector plate is connected with the main shaft, and the rotor is connected with the main shaft. According to the sealing structure of the rotary air preheater, the height of the upper sector plate can be conveniently adjusted, the problem that the area of a triangular air leakage area is increased after the sealing piece is continuously abraded is solved, the area of the triangular air leakage area is kept in a stable interval, then it is guaranteed that the air leakage amount is kept in a stable area, and the energy consumption utilization efficiency is improved.

The utility model provides a pulling device for automobile maintenance, and belongs to the technical field of automobile maintenance. The pulling device for automobile maintenance comprises a pulling structure and a clamping structure, the pulling structure comprises a first screw rod, a fixing frame, a supporting assembly and a clamping assembly, the first screw rod is in threaded connection with the fixing frame, the supporting assembly is in sliding connection with the fixing frame, the supporting assembly is connected with the fixing frame through the clamping assembly, and the clamping assembly is connected with the first screw rod. The clamping structure comprises a fixing frame, a clamping assembly, an L-shaped connecting plate, a clamping block, a bolt and an arc-shaped groove, the first screw rod is rotationally connected with the fixing frame, the clamping assembly is arranged in the fixing frame, and the L-shaped connecting plate is connected with the clamping assembly. According to the pulling device for automobile maintenance, square or cylindrical automobile parts can be conveniently pulled, and the practicability of the device is improved.

The utility model discloses a clothes hanger capable of being contracted and lifted. Comprising a frame body which is integrally square, clothes rods symmetrically arranged at the two ends of the width direction of the frame body, a quilt rod parallel to the clothes rods, a folding and unfolding assembly used for folding and unfolding the quilt rod, a longitudinally-arranged lifting assembly and a pair of telescopic assemblies stretching out and drawing back the clothes rods and the quilt rod in the length direction. The airing rod assemblies are used for assisting in airing clothes and blankets; the airing rod assemblies are arranged between the pair of telescopic assemblies and are arranged side by side in the length direction of the telescopic assemblies, and the lifting assemblies are arranged at the two ends of the rack body in the width direction. According to the folding and unfolding assembly, the quilt rod can be folded to the position above the clothes rod, and folding and unfolding actions are simple and convenient; the lifting assembly achieves lifting of the whole clothes hanger, and the clothes hanger can be conveniently adjusted to the needed height. The telescopic assembly can extend the clothes rod and the quilt rod, and the airing positions are increased through the multiple airing rod assemblies.

The tower crane spraying system comprises a water pipe, a water pump, a swivel joint and an adjustable nozzle device, the water pipe comprises a lower transverse pipe section, a vertical pipe section and an upper transverse pipe section; one end of the lower transverse pipe section is connected with a water tank or a water supply pipe; the water pump is arranged on the lower transverse pipe section; the lower end of the vertical pipe section is connected with the lower transverse pipe section; the upper transverse pipe section is horizontally mounted at the top of a transverse arm of the tower crane; a vertical joint is arranged at one end, close to a tower body, of the upper transverse pipe section; an electromagnetic valve is arranged on one side, close to the vertical joint, of the upper transverse pipe section; the swivel joint is arranged between the vertical pipe section and the vertical joint; flange compensators are respectively arranged between the swivel joint and the vertical pipe section and between the swivel joint and the vertical joint; the adjustable nozzle devices are connected to the upper transverse pipe section at intervals; the adjustable nozzle device comprises an upper connecting plate, a lower connecting plate and a nozzle; the water pump, the electromagnetic valve and the hydraulic supporting rod are all in telecommunication connection with the computer. The tower crane spraying device solves the technical problems that a traditional tower crane spraying device wastes materials and construction period, the reliability of the tower crane spraying device is poor, and the spraying direction and the spraying water drop size are difficult to adjust.

The angle-adjustable wall lamp comprises a mounting plate, a protective shell is fixedly connected to the right side of the mounting plate, and a protective cover is arranged at the bottom end of the right side of the protective shell. According to the angle-adjustable wall lamp, a servo motor and a tooth groove are arranged, the servo motor drives a mounting frame to rotate through a connecting shaft, the mounting frame can drive a protective cover to rotate front and back through rotation of the mounting frame, and therefore the direction of an illuminating lamp in the protective cover can be adjusted, and a handle is pulled; the handle drives the connecting rod to move, so that the tooth block outside the fluted disc is separated from the interior of the tooth groove, the connecting rod is not fixed, then the connecting rod is rotated, the connecting rod drives the adjusting rod and the protective cover to rotate left and right through the fixing sleeve, and therefore the lighting angle of the lighting lamp can be adjusted according to the requirement of a user. And then the handle is pushed to enable the tooth block to be embedded in the tooth groove to fix the tooth disc, so that the problems that the illumination angle is inconvenient to adjust according to the self requirement, and the use is easily influenced are solved.

The utility model relates to the technical field of municipal landscape flower stands, and discloses a novel adjustable municipal landscape flower stand which comprises a main body mechanism and an adjusting mechanism, the adjusting mechanism is located above the main body mechanism, and the main body mechanism comprises a water storage tank body, a water pump, a water pumping pipe, a water conveying telescopic hose, a spraying pipe body and an atomizing nozzle. The water pump is fixedly installed at the upper end of the inner end of the water storage tank body, the water pumping pipe is fixedly installed at the lower end of the water pump, and the water conveying telescopic hose is fixedly installed at the upper end of the water pump and extends to the upper end of the water storage tank body. According to the novel adjustable municipal landscape flower stand, the main body mechanism is installed, so that the spraying capacity of the adjustable municipal landscape flower stand is improved, in the actual use process, the planted landscape flowers and plants can be conveniently sprayed and watered according to use requirements, the manual labor amount is reduced, and the work efficiency is improved. And the market competitiveness of the novel adjustable municipal landscape flower stand is improved.

The utility model relates to the technical field of pearl wool processing, in particular to a material pressing structure for pearl wool rolling, which comprises a material pressing frame, a material pressing table arranged on the inner bottom wall of the material pressing frame, a first material pressing roller arranged at the top end of the material pressing table, and a second material pressing roller arranged at the top of the first material pressing roller. Two flow guide openings are symmetrically formed in one side of the first pressing roller; dust and sundries attached to the two faces of the pearl wool can be cleaned under the action of a cleaning block through two flow guide openings symmetrically formed in one side of a first material pressing roller, the cleaned dust and sundries can be conveniently collected and treated through a dust extractor and a collecting box which are connected with one ends of the two flow guide openings correspondingly, and the production quality of the pearl wool is prevented from being reduced; and through an outer spring arranged outside a sleeve in a sleeving mode, damage to the pearl wool during material pressing is reduced conveniently, through an electric push rod at the top end of a lifting plate, the height of a second material pressing roller is adjusted conveniently, then the pearl wool with different thicknesses is pressed conveniently, and the application range of the device is widened advantageously.

The invention relates to the technical field of iron core production, in particular to a self-adhesive riveting-point-free iron core and a production process thereof, and the production process comprises the following steps: pre-determining the position of a silicon steel sheet on a steel strip with a self-adhesive coating; stamping the outer sides of the silicon steel sheets to form the silicon steel sheets and two frames; performing semi-shearing stamping on the joints between the silicon steel sheets and the frame to enable the silicon steel sheets to be punched out of the frame by a certain distance; shaping to enable the silicon steel sheets and the frame to be in the same plane; cutting off the steel belt to enable the silicon steel sheets and the frame to form independent sheet bodies; a plurality of sheet bodies are stacked together, buckling points are punched on the frame, and the sheet bodies are stacked and riveted into a whole through the buckling points; heating the plurality of sheet bodies to melt the self-adhesive coatings, cooling the sheet bodies, and curing the self-adhesive coatings to fix the plurality of stacked silicon steel sheets together; fixing the silicon steel sheets, and separating the frame from the silicon steel sheets to obtain iron core units; the multiple iron core units are arranged in the circumferential direction, the adjacent iron core units are connected in a clamped mode, and a complete iron core is formed.

The utility model relates to the field of monitoring devices, and discloses a landslide ground deformation monitoring device applying an InSAR technology, which comprises a base. A monitoring device main body is arranged on the upper side of the base; a micro antenna and a solar cell panel are arranged at the top of the monitoring device main body; a supporting plate is arranged below the base, a lifting device connected with the base is installed on the supporting plate, and a moving device and a fixing device are installed below the supporting plate; according to the utility model, on the premise that the equipment has the moving capability through the moving device and the fixing device, the equipment can be kept in a stable fixed state during actual monitoring and use, displacement is not easy to occur, and in addition, the height of the monitoring equipment main body and the height of the miniature antenna are convenient to adjust through the arrangement of the lifting device.

The utility model relates to the technical field of planting instruments, and provides a grassland planting device which comprises a device assembly, a mounting bracket is rotatably mounted at the front end of the device assembly, and the mounting bracket is provided with a loosening mechanism for loosening soil; the mounting bracket is rotationally connected with a connecting arm plate, the connecting arm plate is provided with a plurality of positioning holes, and all the positioning holes are arranged at intervals along the length direction of the connecting arm plate; a positioning column is fixed to the side face of the device assembly and matched with the positioning hole in an inserted mode, and a limiting part used for limiting the connecting arm plate to be separated from the positioning column is detachably installed at the end of the positioning column. On the basis, the height of the loosening mechanism can be conveniently adjusted by changing the positioning holes matched with the positioning columns in an inserted mode, and then loosening operation can be conveniently conducted on deeper soil, so that smooth germination and growth of grass seeds after sowing are guaranteed.

The utility model discloses an office chair which comprises a seat cushion, armrests detachably arranged on two sides of the seat cushion, a backrest detachably arranged on the back of the seat cushion, a waist cushion detachably arranged at the lower end of the front side of the backrest, a headrest detachably arranged at the upper end of the backrest and a bracket assembly detachably arranged at the bottom of the seat cushion, a mounting frame used for connecting the backrest and the seat cushion is arranged on the rear side of the seat cushion, the mounting frame and the waist cushion are detachably connected through a clamping assembly, the clamping assembly comprises a splicing block arranged on the back face of the waist cushion, and a fixing block corresponding to the splicing block is arranged on the front side of the mounting frame; splicing protrusions are arranged on the edges of the two sides of the fixing block. According to the office chair, the waist cushion is detachably arranged at the lower end of the front side of the backrest through the clamping assembly, installation is convenient and fast, efficiency is improved, the installation frame, the seat cushion, the support assembly, the headrest and the backrest are detachably connected, the packaging size of the office chair is greatly reduced, and cavities in packaging are greatly reduced.

The utility model relates to the field of experiment auxiliary devices. A glass slide cleaning and drying device comprises a cleaning tank, the cleaning tank comprises an upper cover body and a lower cover body which are arranged up and down, and the upper cover body is in longitudinal sliding connection with the lower cover body through a lifting mechanism; a draining plate is installed in the lower cover body, glass slide placing positions which are distributed in the circumferential direction are arranged on the draining plate, each glass slide placing position is provided with an inner fixing column and an outer fixing column which are used for obliquely placing a glass slide and are arranged inside and outside, and a gap between the inner fixing column and the outer fixing column is used for inserting the bottom of the glass slide; a discharge port is formed in the bottom of the lower cover body; a longitudinally-arranged pipeline is installed in the center of the upper cover body, the pipeline is longitudinally connected with the upper cover body in a sliding mode, a spraying head is installed on the pipeline, the top of the pipeline is communicated with a cleaning water pipeline and a hot air conveying pipeline in a butt joint mode, and valves are installed on the cleaning water pipeline and the hot air conveying pipeline. And the spraying heads are mounted on the pipelines, so that cleaning spraying water or drying hot air can be conveniently switched and guided out.

The invention relates to a deviation rectifying device and method applied to amorphous strips and relates to the technical field of amorphous strip deviation rectifying, the deviation rectifying device comprises a workbench, an unwinding frame is arranged on one side of the top of the workbench, an unwinding roller is arranged on the top of the unwinding frame, and a winding frame is arranged on the side, away from the unwinding frame, of the workbench; a winding roller is arranged at the top of the winding frame, an adjusting mechanism is arranged between the unwinding frame and the winding frame, and the adjusting mechanism comprises a fixed frame, a movable connector, an adjusting frame, an electric telescopic rod and a guide roller shaft; the servo motor drives the two-way threaded rod to rotate, the two-way threaded rod rotates to drive the two moving blocks to rotate in the opposite directions, and the moving blocks move to drive the connecting rings to do synchronous translational motion so as to drive the adjusting cylinders on the two sides to do translational motion in the opposite directions; therefore, the overall width of the center roller and the adjusting cylinder is adjusted so as to conduct amorphous strips with different widths.

The utility model relates to the technical field of quantitative fertilization, and discloses a soil quantitative fertilization device which comprises a material storage tank, the top of the material storage tank is in threaded connection with a tank cover, a quantitative fertilization mechanism is arranged at the bottom of the material storage tank, the quantitative fertilization mechanism comprises a material guide seat, and the bottom of the material storage tank is fixedly connected to the top of the material guide seat. The soil quantitative fertilization device can be operated by one person for fertilization, manpower resources are saved, through arrangement of the storage tank, the discharging port and the feeding port, fertilizer can be conveniently discharged between the material pushing plate and the positioning block in the material guiding seat, through arrangement of the first electric telescopic rod, the material pushing plate, the connecting rod and the positioning block can be conveniently driven to move in a reciprocating mode, and the fertilizer applying efficiency is improved. When the material pushing plate, the connecting rod and the positioning block reciprocate each time, the same amount of fertilizer can be pushed to the discharging opening and discharged into soil through the material guiding pipe, the through groove and the discharging barrel, quantitative fertilization is facilitated, and the fertilizer can be fully and effectively utilized.

The invention discloses an intensive care medicine breathing machine pipeline support fixing device, and relates to the technical field of breathing machine pipeline supports, the intensive care medicine breathing machine pipeline support fixing device comprises a mounting seat, the mounting seat is fixedly connected with elastic clamping pieces symmetrically distributed along the mounting seat, the mounting seat is fixedly connected with a supporting rod, the supporting rod is rotatably connected with a rotating rod, and the rotating rod is fixedly connected with the elastic clamping pieces. And the rotating rod is rotationally connected with at least two connecting rods which are distributed in series, the rotating rod and the connecting rods are fixedly connected with clamping frames, and the connecting rods on the side away from the mounting base are connected with placing ring frames in an inserted mode. By easily rotating the rotating rod and the connecting rods, the supporting position and angle of the rotating rod or the connecting rods can be rapidly adjusted, stable stretching and supporting of a pipeline are facilitated, the stability and safety of the pipeline in the treatment process are ensured, the operation time is shortened, the operation difficulty is reduced, and the convenience of multiple times of adjustment is improved.

The utility model discloses a rice seedling raising water planting device which comprises a base, supporting plates which play a role in bearing are fixedly connected to the upper end of the base in a bilateral symmetry mode, and a water tank is arranged on the upper side of the base. Water tanks are fixedly connected to the inner wall of the supporting plate at equal intervals, a limiting structure and a height adjusting structure are arranged on the inner side and the outer side of the supporting plate correspondingly, and the limiting structure comprises a positioning strip, a supporting block, a limiting rod, a mounting strip and a waterproof spring; the height adjusting structure comprises a connecting lug, a threaded rod, a first motor, a first connecting piece, a belt and a second connecting piece; the upper left end of the water tank is integrally connected with a water inlet, and the interior of the water tank is rotationally connected with a connecting shaft. According to the rice seedling raising hydroponic device, the height of the heating lamp tube is convenient to adjust, the height adjusting structure is simple, the cost is reduced, nutrient elements can be conveniently and fully mixed in clear water, different liquid concentrations are prevented, and meanwhile the position of the seedling raising tray is easily limited.

The utility model discloses a safety warning board for building construction, and relates to the technical field of safety warning boards. The building construction safety warning board comprises a mounting frame, the interior of the mounting frame is rotationally connected with a warning board body, a folding mechanism is arranged at the bottom of the mounting frame, and a supporting mechanism is arranged at the bottom of the mounting frame. According to the safety warning board for building construction, by arranging the main leg, when the height of the mounting frame needs to be adjusted, firstly, a positioning rod is rotated, so that an auxiliary leg and a clamping block rotate in the main leg, after the height is adjusted to a proper height, the positioning rod is reversely rotated again, so that the clamping block is clamped into a nearby clamping groove, and the height of the mounting frame is conveniently adjusted through the device.