445results about How to "Big impact" patented technology

The utility model discloses a prefabricated pump tower base reinforcer which comprises a platform plate and a pump tower base body, a reinforcer body is arranged below the pump tower base body, and a mounting groove is formed in the upper surface of the platform plate; threaded holes are formed in the platform plates, a plurality of screws are connected into the reinforcer body in a penetrating mode, limiting grooves are formed in the side faces of the screws, and a through opening is formed in the middle of the reinforcer body. An elastic ball and a supporting piece are arranged in the reinforcing piece body. According to the prefabricated pump tower base reinforcer, the reinforcer body is arranged in the shape of the Chinese character'jing ', so that the reinforcer body does not need to be in circular butt joint with a lower opening of the pump tower base body, site construction is facilitated, and impact force can be effectively buffered through elastic force of the elastic balls when a pump tower runs; and meanwhile, the structural strength of the reinforcer can be improved by utilizing the supporting piece, so that the reinforcer can bear larger impact force.

The invention belongs to the technical field of automobile suspensions, and particularly relates to a gas damping independent air spring which comprises a base, an air bag, a piston and a protective cylinder. The open end of the piston is connected with the upper end of the air bag; the piston is provided with a partition plate dividing the gas containing cavity into a main gas chamber and an auxiliary gas chamber, the main gas chamber is located on the side, close to the gas bag, of the partition plate, and the auxiliary gas chamber is located in the piston cavity. A compression throttling hole and a stretching throttling hole which are communicated with the main air chamber and the auxiliary air chamber are formed in the partition plate; a first elastic valve plate for sealing the compression throttling hole is arranged in the auxiliary air chamber, and a second elastic valve plate for sealing the stretching throttling hole is arranged in the main air chamber. The pressure difference between the main air chamber and the auxiliary air chamber is used for controlling opening and closing of the compression throttling hole and the stretching throttling hole, so that effective air containing cavities of the air spring are rapidly switched, and the rigidity of the air spring is adjusted in time. The air flow is limited through the compression throttling hole and the stretching throttling hole, and damping force is provided for the telescopic movement of the air spring.

The utility model discloses a battery pack multi-layer protection structure, a battery pack protection plate, a battery pack and electric equipment. The battery pack multi-layer protection structure comprises a bottom protection plate; the tray bottom plate is arranged at one end of the bottom protection plate, and a mounting space is defined between the tray bottom plate and the bottom protection plate; the protection assembly is arranged in the installation space and comprises a buffering piece and an elastic piece, one end of the buffering piece is connected with the tray bottom plate, the other end of the buffering piece is connected with one end of the elastic piece, and the other end of the elastic piece is connected to the bottom protection plate. The elastic piece and the buffer piece are arranged between the bottom protection plate and the tray bottom plate, so that the elastic piece and the buffer piece can be used for buffering and absorbing impact force from the outside in sequence, the battery pack can bear larger impact force, the impact force borne by a battery cell can be reduced, the battery pack is further protected, and the service life of the battery pack is prolonged. And the battery pack can work normally.

The invention relates to the technical field of hardware machining, and discloses a drilling machine for precise hardware machining and a using method thereof.The drilling machine comprises a containing table, a connecting frame is fixedly connected to the top of the containing table, two clamping blocks are slidably connected to the top of the containing table, and an electric telescopic rod is started to push a sliding block to descend; when a workpiece is drilled, a rotating rod and a drill bit descend to be close to the workpiece, meanwhile, a motor is started to drive a second belt wheel to rotate, a transmission belt rotates, the rotating rod and the drill bit rotate to drill the workpiece, meanwhile, when the rotating rod rotates, a round ball rod can rotate around the center of a fixed circular ring, the round ball rod can incline, and a first connecting ring can be pulled by the round ball rod; the first connecting ring is moved downwards to descend, so that an extrusion ring descends, an extrusion plate descends, cooling liquid in a liquid storage tank is extruded, the extruded cooling liquid is sprayed out through a communicating hole to flush the surface of the drill bit, and therefore chippings attached to the surface of the drill bit are reduced, and the abrasion speed of the drill bit is effectively reduced.

The invention relates to a continuous oscillatory flow crystallization device with a V-shaped connecting pipe structure. According to the technical scheme, the device specifically comprises a tubular crystallizer assembly of a V-shaped connecting pipe structure, an oscillatory flow pump driving mechanism, a feeding mechanism, a discharging mechanism, a circulating cooling mechanism and an intelligent control system. Through the structural design of the V-shaped connecting pipe, periodic circulation can be formed in the chamber, the radial mixing strength is remarkably enhanced, the impact force of fluid on the wall surface is increased, and a heat transfer boundary layer is thinned, so that the technical bottleneck of non-uniform crystal suspension at a high solid-to-liquid ratio is effectively solved, and heat transfer and mass transfer in the continuous crystallization process can be enhanced; no stirring paddle or moving mechanical part is arranged inside, so that suspended crystal particles are effectively prevented from being broken and nucleated; and in the nucleation dominant area, through alternate cooling crystallization and heating dissolution operation, crystal scales on the pipe wall and fine grains in the mother liquor can be dissolved, and the number of crystal nucleuses in the crystallization mother liquor can be regulated and controlled, so that controllable production of expected particle size distribution of a crystallization product is realized, and the problem of scaling on the pipe wall is effectively solved.

The invention relates to the technical field of laser welding, and discloses a laser welding machine for gas barbecue oven machining, which comprises a welding box, a first box door is hinged to the front surface of the welding box, a second box door is hinged to the back of the welding box, a welding platform is fixedly connected to the interior of the welding box, and a collecting groove is formed in the welding platform. A collecting box is slidably connected into the collecting groove, the front face of the welding platform is obliquely arranged in a slope mode, sweeps on the top of the barbecue oven can be blown away through an air blowing pipe so that the sweeps can slide to the slope of the welding platform, a brush can blow away the sweeps on the slope, and therefore cleaning of the welding sweeps is achieved. And the interior of the transverse groove is knocked through the knocking ball, so that falling of scraps on the inclined face of the welding platform can be accelerated, scrap cleaning is achieved, the probability of generation of welding defects such as air holes and slag inclusion can be reduced through scrap cleaning, welding seams are more uniform and compact, and the welding quality is guaranteed.

The invention discloses a spraying device for grassland ecological soil remediation in the technical field of ecological remediation. The spraying device comprises a vehicle body, a storage assembly is installed at the top end of the vehicle body, a lifting cavity is formed in the vehicle body, a lifting assembly is arranged in the lifting cavity, a supporting plate is fixedly connected to the bottom of the lifting assembly, and a plurality of spraying assemblies are linearly arrayed at the bottom of the supporting plate; a pump assembly is arranged in the vehicle body; the spraying assembly and the storage assembly are both communicated with the pump assembly; and each spraying assembly comprises a rotating hole column fixedly connected to the bottom of the supporting plate, a spraying ring is annularly arranged on the surface of each rotating hole column, a plurality of spraying openings communicating with the storage assembly are formed in the bottom of each spraying ring, and a plurality of injection assemblies are arranged in each rotating hole column. Through cooperative assistance of the lifting assembly, the spraying assembly and the injection assembly, when the grassland surface soil is hard, spraying remediation can be conducted on the grassland soil surface, meanwhile, injection of liquid medicine can be completed by going deep into the grassland soil, and the ecological remediation effect of the grassland soil is improved.

The invention discloses a synchronous automatic material pushing mechanism and method of a machine tool machining assembly line, and relates to the technical field of machine tool material pushing. Comprising a supporting platform, a material pushing platform is arranged at the upper end of the supporting platform, a material pushing mechanism used for materials of the machine tool machining assembly line is arranged on the material pushing platform, and the material pushing mechanism comprises the synchronous automatic material pushing mechanism for the machine tool machining assembly line and the method. The side wall of the supporting rod is driven forwards through the L-shaped rod connected with the mounting shaft, then the inclined groove in the L-shaped rod and the inclined rod inclining downwards slide, when the supporting rod clamps and pushes an object, the L-shaped rod is driven by the inclined rod to rotate along the connecting shaft, the clamping plate support slightly lifts the object after clamping the object, and then the object is clamped through the clamping plate support. The material pushing device is used for reducing friction force between materials and a machining platform when the materials are pushed, reducing pushing resistance and preventing the machining platform from being abraded by generated friction.

The utility model belongs to the technical field of collecting pipes, and particularly relates to a collecting pipe capable of improving impact resistance, which comprises a main pipe, a branch pipe is connected to the outer side surface of the main pipe, a branch pipe flange is connected to the top surface of the branch pipe, a connecting flange is connected to the top surface of the branch pipe flange, and a connecting pipe is connected to the surface of the other end of the connecting flange. And a flow meter is arranged at the bottom end of the connecting pipe. According to the utility model, through the mutual matching among the connecting pipe, the rotating shaft, the fan blades and the bearing, the rotatable fan blades can be arranged at one end of the branch pipe, so that when fluid flows to the branch pipe, the fan blades are driven to rotate, the fluid is shunted, the impact force of the fluid during circulation is weakened, the fluid does not have larger impact force when flowing into the main pipe, and the service life of the main pipe is prolonged. And secondly, through mutual cooperation of the positioning blocks and the bolts, the fan blades in the connecting pipes can be separated and detached, an operator can maintain the fan blades, and the using effect of the fan blades is ensured.

The invention relates to the technical field of cleaning equipment, and discloses a wild jujube cleaning machine which comprises a treatment box which serves as a basic component of the whole device and is used for assembling and bearing all treatment mechanisms and subordinate structural parts of the treatment mechanisms. The partition seat is fixedly connected to the middle of the inner side of the treatment box and used for dividing the space of the upper and lower parts of the inner side of the treatment box into an arc-shaped cavity, a sorting cavity and a collecting cavity; and the attachment and separation mechanism is used for carrying out separation treatment on soil, dust and other impurities attached to the wild jujubes fed into the equipment. By adding and arranging the gas-liquid mixed washing mechanism, when the wild jujubes treated by the attachment and separation mechanism are washed, the wild jujubes are washed in a gas-liquid mixed mode, water resource consumption in the wild jujube washing process can be effectively reduced, and a large amount of water cost can be saved for enterprises; in addition, by reasonably controlling the switching frequency and pressure of water and air, a good cleaning effect can be achieved under low water pressure.

The utility model discloses a pull type road electric carrying train with multiple sections and multiple layers of carriages, which belongs to the technical field of heavy trucks and comprises a train head and a plurality of mounting rods with the same structure. The multiple sections of carriages are the same in structure; hubs are arranged on the carriages; hydraulic telescopic rods are arranged on the periphery of the bottom of the compartment, and supporting legs are arranged at the bottoms of piston rods of the hydraulic telescopic rods. Connecting female pieces are arranged at the left ends of the carriages, and connecting male pieces matched with the connecting female pieces are arranged at the right ends of the carriages and the right ends of the mounting rods; the mounting rods are connected with one another, and the bottom mounting rod is arranged on a vehicle head; the heavy truck is provided with at least two carriages, the multiple carriages can be folded and stored on the first carriage under the condition that cargoes are not loaded, the occupied area is reduced, parking is convenient, the multiple carriages are sequentially connected through the connecting female pieces and the connecting male pieces when the cargoes are loaded, the transportation capacity is further improved, and the transportation cost is reduced. And the ever-increasing large-piece transportation requirement is met.

The invention discloses a guiding type self-cleaning water pump and relates to the technical field of water pumps, the guiding type self-cleaning water pump comprises a water pump shell, an impeller cleaning assembly and a pipeline cleaning assembly.The water flow speed is changed through the gradually-decreased hole diameter of a conical speed change hole, a rapid water flow impact column is formed, and strong impact force is generated; impurities and sediments on the surfaces of the impeller blades and the impeller rear cover disc are impacted and cleaned, so that the impurities cannot stay and be attached to the impeller blades and the impeller rear cover disc, and water scale difficult to remove is prevented from being formed, a water source dispersedly flows into the water pump shell in a flow channel formed by every two adjacent impeller blades, and at the moment, water flow is guided through the flow guide blocks; water flow deflects to the surfaces of the impeller blades, so that impact force is increased, the side faces of the impeller blades are subjected to impact cleaning, the cleaning state of the surfaces of the impeller blades is kept through continuous water flow impact, the automatic cleaning function can reduce regular manual cleaning requirements, tedious manual operation is omitted, and the maintenance cost and labor input are reduced.

The invention relates to the technical field of sewage treatment, in particular to a polymeric ferric sulfate processing and feeding device and method for sewage treatment. Comprising a sewage tank, a rotating motor is arranged at the end of the sewage tank, a lead screw is arranged at the output end of the rotating motor, a moving seat is arranged on the surface of the lead screw, pressing rods are arranged on the two sides of the moving seat, the ends of the pressing rods extend to the outer wall of the sewage tank, and a mixing assembly is arranged below the pressing rods. When the moving seat moves, the pressing rod is driven to press the top of the pressing head, the pressing head pushes the sliding rod to slide on the inner wall of the column casing and extrude water in the column casing, the water is sprayed out through the top of the spraying disc, and the nearby water is impacted while the water is sprayed; and when the spraying discs sequentially impact sewage in the sewage tank, increased impact force exists between the wastewater, so that the sewage is mixed, and the mixing efficiency of the sewage and the polymeric ferric sulfate medicament is improved.

The invention discloses a power plant on-site boosting transformer substation with a protection function, and particularly relates to the technical field of transformer substations, the power plant on-site boosting transformer substation comprises a transformer substation body, a protection device is arranged on one side of the transformer substation body, a cooling device is arranged on one side of the transformer substation body, and the protection device comprises a collection frame; the device comprises a transformer substation body, a collecting frame is fixedly connected with the transformer substation body, a motor is fixedly connected to one side of the collecting frame, a first screw rod is fixedly connected to the output end of the motor, and the first screw rod is located in the collecting frame. Meanwhile, a certain sunshade and heat insulation effect can be provided for the transformer substation body, the situation that hail or sundries fall on the transformer substation body and generate large impact force, consequently, the transformer substation body is damaged due to impact, and normal use of internal electrical components is affected is reduced, the use safety of the transformer substation body is improved, and the service life of the transformer substation body is prolonged.

The invention provides an all-electric measurement and control instrumented tensile impact fatigue experiment system, and mainly solves the problems that stress wave pulses are transmitted back and forth in a rod, and a cyclic loading test and an automatic test cannot be repeated. According to the invention, the Hopkinson pull rod system, the stress wave riveting gun module, the lead screw dragging device and the comprehensive detection and control device are utilized to realize single-time repeated impact loading of a test piece, control the launching and recovery of a projectile body, realize closed-loop control of loading force, and improve the reliability of the test piece. According to the invention, a single loading impact fatigue function of continuous tensile impact on a sample is realized through the energy absorption and limiting device and the screw rod dragging device, and instrumentation and full automation of an impact tensile fatigue experiment are realized.

The invention relates to a road engineering roadbed and pavement compactness detection device, and belongs to the technical field of road infrastructure construction. The vibrating wheel is rotationally arranged on the rack, and a rotating shaft of the vibrating wheel is horizontally arranged; the engine is fixedly arranged on the rack and used for providing power for rotation of the vibrating wheel; the first eccentric assembly is arranged in the vibrating wheel and used for generating eccentric force; the first linkage assembly is arranged in the vibrating wheel and used for forming synchronous rotation between the first eccentric rod and a rotating shaft of the vibrating wheel; the compaction degree sensor is fixed on the rack and is positioned close to the center line of the vibrating wheel; an information collecting device and a displayer are fixed to the rack, the information collecting device is used for being matched with the compaction degree sensor to collect information, the displayer is used for being matched with the information collecting device to display the information, and the roadbed compaction degree detection device has the effect of fully detecting the compaction degree of a roadbed.

The invention provides a lithium carbonate production dust treatment device, and belongs to the technical field of dust separation devices.The lithium carbonate production dust treatment device comprises a filter tower and a placement box, a fixed frame is arranged at the top of the filter tower, a back flushing mechanism is installed on the fixed frame, and a plurality of rotating assemblies are arranged on the back flushing mechanism and used for driving the rotating assemblies to rotate; the rotating assembly comprises a first rotating plate, a rotating rod and a second rotating plate, the two ends of the rotating rod are connected with the first rotating plate and the second rotating plate correspondingly, the first rotating plate, the rotating rod and the second rotating plate are coaxially arranged, an auxiliary circular ring is fixedly installed on the fixed frame, the auxiliary circular ring and the rotating rod are coaxially arranged, and a steel reinforcement framework is arranged between the auxiliary circular ring and the second rotating plate; a filter cloth bag is fixedly mounted on the steel reinforcement framework; the filtering cloth bag can be driven to rotate through rotation of the steel reinforcement framework, shaking of the filtering cloth bag is increased, and therefore dust at wrinkles of the filtering cloth bag is shaken off.

The invention provides a spreading system for scattered stacked metal smelting blank ingots, and relates to the field of spreading of scattered stacked metal smelting blank ingots, the spreading system comprises a supporting mechanism, the supporting mechanism comprises a first supporting frame, a connecting frame, an adjusting roller and a driving part, one side of the supporting mechanism is provided with a tipping bucket stock bin, and the other side of the supporting mechanism is provided with a second supporting frame; and a baffle assembly is arranged on one side of the tipping bucket stock bin and comprises a bearing frame, a tipping bucket baffle and a baffle telescopic oil cylinder, one side of the tipping bucket stock bin is fixedly connected with one side of the top end of the tipping bucket jacking oil cylinder, and a second supporting frame is arranged at the bottom of the tipping bucket stock bin. According to the tipper hopper, materials in the hopper can slide to the position close to the tipper hopper baffle along with continuous rising of the tipper hopper jacking oil cylinder, the adjusting roller rotates to be matched with the baffle telescopic oil cylinder to control the opening and closing angle of the tipper hopper baffle, and therefore the materials are slowly released, the materials stacked in a scattered mode are spread, a traditional manual operation mode is avoided, and the tipper hopper is convenient to use. And the phenomenon that workers are injured is reduced.

The utility model relates to the technical field of sweepers, and discloses a sweeper anti-collision bidirectional obstacle avoidance device which comprises a sweeper body, a clamping groove is formed in the center of the outer side wall of the sweeper body, two base plates are fixedly connected in the clamping groove, and the two base plates are located at the front end and the rear end of the sweeper body respectively. Storage grooves are formed in the positions, close to the two sides, of the center of the front end face of the base plate close to the front portion and the positions, close to the two sides, of the center of the rear end face of the base plate close to the rear portion correspondingly, and connecting structures are arranged in the four storage grooves correspondingly; grooves are formed in the two sides of the center of the rear end face of the protective plate close to the front and the two sides of the center of the front end face of the protective plate close to the front. According to the obstacle avoidance detection device, the four connecting structures are fixed on the four base blocks, and the four limiting bolts are used for limiting the four base blocks, so that the two protection plates can be conveniently mounted, and the two obstacle avoidance detection devices can be conveniently dismounted and maintained by dismounting the four limiting bolts.

The invention relates to the technical field of magnesium powder transportation, in particular to a magnesium powder conveying device which comprises a material distributing tank and a conveying pipe, the conveying pipe is a turbulent flow double-sleeve pipe and comprises an outer sleeve pipe and an inner sleeve pipe connected to the top of the inner wall of the outer sleeve pipe, and openings evenly distributed in the conveying direction at intervals are formed in the bottom of the inner sleeve pipe; a ring set is fixedly connected into the inner sleeve and comprises a drainage ring and a stop ring, a mounting ring is elastically connected to the side, away from the conveying direction, of the stop ring, an iris mechanism is arranged in the mounting ring, and a flow guide plate is rotationally connected to the side, away from the conveying direction, of the mounting ring. A driving assembly I for driving the iris mechanism to change the size of the through hole and a driving assembly II for driving the flow guide plate to rotate are arranged on the inner sleeve. According to the magnesium powder conveying device, magnesium powder is not prone to being accumulated and agglomerated in the conveying pipe, and when the accumulation and blocking phenomena occur, the magnesium powder can be rapidly dispersed, the conveying pipe can be dredged, and normal conveying of powder is guaranteed.

The utility model discloses an efficient irrigation spray gun capable of spraying evenly, the spray gun is provided with two steering wheels, each steering wheel comprises a circular wheel body, a blade fixedly arranged on one side of the wheel body and a hub vertically and fixedly arranged in the center of the wheel body, and the hubs of the two steering wheels are coaxial and fixedly connected with each other. The number of steering water spraying pipes of the spray gun is two, the two water spraying pipes are both connected with an upper base of the spray gun, water outlets of the two steering water spraying pipes face the corresponding steering wheels respectively, and hubs of the two steering wheels are both fixedly connected with a worm of a driving device on the spray gun. According to the utility model, the impact force of water flow is increased, so that the rotating speed of the steering wheel is higher, the force borne by the steering wheel is larger, the sprayed water flow quickly sweeps surrounding soil, and the situation that the sprayed water is locally accumulated to influence the irrigation effect is avoided. After the two steering water spraying pipes and the two steering wheels are arranged, even if the water pressure is low, enough impact force can be generated, and therefore normal rotation of the steering wheels is guaranteed.

The water outlet nozzle comprises a water outlet nozzle body, a cavity for water to flow out is formed in the water outlet nozzle body, the water outlet nozzle body is provided with a water inlet end and a water outlet end, more than two water outlet through holes are formed in the water outlet end, a gap penetrating through the interior and the exterior of the water outlet nozzle body is formed between the water outlet through holes, and the water outlet through holes are communicated with the water outlet nozzle body. The two ends of the gap are communicated with the water outlet through hole, and the water outlet nozzle body is made of elastic materials. More than two water outlet through holes are formed in the water outlet end of the water outlet nozzle, the water outlet through holes are connected through gaps, and the water outlet nozzle can change the water outlet area and adjust the water outlet impact force within a certain water pressure range according to the water pressure change.

The invention discloses a movable building construction waste treatment device which comprises a frame, rollers are rotatably mounted on the lower surface of the frame, a brake mechanism is rotatably mounted on one side of the frame, a first U-shaped frame and a second U-shaped frame are fixedly mounted on the two sides of the frame respectively, and a dust collection mechanism is fixedly mounted in the first U-shaped frame; the dust collection end of the dust collection mechanism is installed on the upper surface of the crushing bin, and a feeding mechanism is rotationally installed in the second U-shaped frame. Through the design of the dust collection mechanism and the feeding mechanism, the dust collection mechanism pushes or pulls the vehicle frame to a construction waste accumulation position, so that the equipment can quickly reach a waste generation place, the carrying distance of the construction waste can be reduced through the flexible moving mode, the treatment efficiency is improved, and through the folding design of the feeding mechanism, the construction waste can be conveniently and rapidly transported. In the construction waste treatment process at different places, the construction waste treatment device can be quickly converted from a transportation state to a working state through the folding and unfolding functions.

The invention relates to the technical field of intelligent welding, in particular to a vehicle-mounted intelligent welding robot which comprises a movable guide rail, a rail tackle is arranged at the top of the movable guide rail, and a welding robot body is arranged at the top of the rail tackle; the transmission assembly is used for driving the welding robot body to move horizontally, and the transmission assembly is connected with the moving guide rail; and the connecting assembly is used for rapid disassembly, assembly and maintenance of the welding robot body, and the connecting assembly is connected with the rail tackle. Through the design of the connecting assembly, rapid disassembly and assembly of the welding robot body and the rail tackle are achieved, and through the structures such as a deformation cavity, a weakening groove, a reset piece and a telescopic piece in the connecting assembly, connection and separation can be easily completed without complex tools and steps in the disassembly and assembly process, so that the maintenance difficulty and the time cost are greatly reduced, and the disassembly and assembly efficiency is improved. And the production efficiency is improved.

The pelletizer comprises a machine base, a motor is installed on one side of the machine base, the output end of the motor is connected with a rotating shaft through a coupler, the rotating shaft is rotationally connected with the machine base through a bearing, one end of the rotating shaft is connected with a pelletizing roller, a fixing rod is fixedly installed on the other side of the machine base, and the fixing rod is fixedly connected with the output end of the motor. One end of the fixing rod extends into the inner wall of the granulation roller, the fixing rod is movably connected with the inner wall of the granulation roller through a bearing, forming grooves are evenly formed in the outer wall of the granulation roller, a feeding groove is formed in the top of the machine base, a discharging groove is formed in the bottom of the machine base, and a push block is slidably installed on the inner wall of the discharging groove. A sliding rod is fixedly installed on one side of the pushing block, the outer wall of the sliding rod is slidably connected with a connecting rod in a sleeving mode, the granulation roller is of a hollow structure, guide holes are evenly formed in the inner wall of the granulation roller, and the problem that the current practicability is poor is solved.

The present invention relates to a coffee table, and provides a lifting coffee table, comprising a desktop, a bottom support frame, a lifting device and a switch; the lifting device comprises two pairs of cross-hinged support rods, comprising a first support rod and a second support rod, the upper part of the first support rod is rotatably connected with a first pulley, the bottom of the desktop is provided with a first slide rail matching the first pulley, the first pulley can slide along the length direction of the first slide rail, the lower part of the second support rod is rotatably connected with a second pulley, the bottom support frame is provided with a second slide rail matching the second pulley, the second pulley can slide along the length direction of the second slide rail, the lifting device is used to control the lifting of the desktop, and the switch is connected to the lifting device and is used to control the start and stop of the lifting device. The lifting coffee table of the present invention has the advantages of small footprint, convenient lifting, and height adjustable.

The present invention provides a tunnel boring machine equipped with a high-pressure water jet cutting system and a combined excavation method, including a tunnel boring machine body, a flow pump group is arranged on the tunnel boring machine body, and a high-pressure water jet cutting system is arranged at the front end of the tunnel boring machine; the high-pressure water jet cutting system includes a water jet-mechanical combined cutter disc, a water jet-shell knife combined tool, a high-pressure water transmission pipeline, a multi-media rotation center and a water jet diverter valve block, wherein one end of the high-pressure water transmission pipeline is connected to the flow pump group, and the other end is connected to the multi-media rotation center, and the multi-media rotation center is connected to the water jet diverter valve block, and the high-pressure water is divided into multiple paths, which are respectively supplied to each water jet-shell knife combined tool on the water jet-mechanical combined cutter disc. The present invention provides practical suggestions and references for the overall design, optimization and spatial layout of the high-pressure water jet system.

This utility model relates to the field of vehicle radar technology, and in particular to a nozzle for cleaning lidar, comprising a bracket and an insert. The bracket is mounted across the lidar, and the bracket has a distribution cavity and multiple mounting slots. The distribution cavity is connected to a cleaning source. The multiple mounting slots are arranged in a fan shape along the length of the bracket, and the mounting slots are connected to the distribution cavity, with the slot openings facing the lidar surface. The insert is inserted into the mounting slot and sprays fluid to clean the lidar surface. This utility model provides a lidar cleaning nozzle with a simple structural design, a small number of mounting slots, and excellent cleaning effect.

The utility model relates to the field of unmanned aerial vehicles, and discloses a chemical defense rotor unmanned aerial vehicle mounting mechanism which comprises an unmanned aerial vehicle body, a dismounting assembly is arranged on the lower surface of the unmanned aerial vehicle body, a buffer assembly is arranged at the right end of the unmanned aerial vehicle body, the dismounting assembly comprises a fixing shell, and the fixing shell is fixedly connected to the lower surface of the unmanned aerial vehicle body. A clamping jaw is in contact with the inner wall of the fixing shell, a first rectangular groove is formed in the right surface of the top end of the clamping jaw, a sliding plate is slidably connected to the rear surface of the fixing shell in a penetrating mode, the buffering assembly comprises a hinge block, and the hinge block is fixedly connected to the outer wall of the right end of the unmanned aerial vehicle body. According to the clamping jaw device, the clamping jaw can be fixed only by inserting the clamping jaw into the inner wall of the fixing shell and then starting the motor, the mode of rotating multiple sets of bolts is not needed, the clamping jaw device is rapid and convenient to use, the working efficiency is improved, meanwhile, when the clamping jaw loses efficacy and cannot throw objects, the clamping jaw can be limited through contact of the motor, the objects can be thrown, and practicability is improved.

The utility model belongs to the field of packaging boxes, and provides a convenient-to-stack steel edge packaging box which comprises a bottom plate, a surrounding plate, steel ladle edges, bottom feet and a cover plate. Wherein the coaming is annularly provided with a plurality of accommodating spaces on the outer side of the bottom plate, and the accommodating spaces are matched with the bottom plate to form an opening; the steel ladle edge is connected to the turning position of the adjacent coamings and matched with the height of the coamings. The bottom feet are connected to the side, away from the surrounding plate, of the bottom plate and distributed in the extending direction of the bottom plate. The cover plate is detachably connected to the coaming and used for sealing the containing space, and a protruding block corresponding to the bottom foot is formed on the side, away from the coaming, of the cover plate.