122results about How to "Avoid dents" patented technology

The invention relates to the technical field of ship berthing, and discloses a ship unberthing and berthing device and a using method thereof.The ship unberthing and berthing device comprises a pressed mechanism, the pressed mechanism further comprises a mounting plate, a fixing support is fixedly connected to the side wall of the mounting plate, before use, the whole device is mounted on the outer wall of a ship, and a pressed sliding frame is influenced by pushing of a spring telescopic rod and is fixed to the outer wall of the ship; the angle between the rotating frame and the mounting plate is reduced along with the reduction of the distance between the port and the ship, and the force applied to the rotating wheel by the rotating frame is continuously increased along with the reduction of the angle of the rotating frame, so that the rotating wheel is forced to slide along the outer wall of the rotating frame; the rotating wheel drives the pressed sliding frame to slide along the inner wall of the mounting plate through the rotating column, in the process, the pressed sliding frame is pushed by the spring telescopic rod to force the rotating frame to expand outwards, the expanding force offsets the transverse force of the feet for the ship to get close to the port, and the situation that friction is too large, and the berthing efficiency of the ship is affected is avoided.

The invention belongs to the technical field of soil layer drilling, and particularly relates to a construction drilling device and a supporting structure construction method.The device comprises a control mechanism, a bearing mechanism, a drilling mechanism, a dustproof mechanism and a backflow mechanism; the drilling mechanism comprises a drilling machine and a connector; the connector is used for connecting a drill bit and an output shaft of the drilling machine; the bearing mechanism comprises a bearing plate and a mounting plate for mounting a drilling machine, and the mounting plate is movably arranged on the side wall of the bearing plate; the movement of the bearing plate and the mounting plate is controlled by a control mechanism; the dustproof mechanism comprises a water curtain nozzle and a cooling nozzle; the water curtain nozzle and the cooling nozzle are annularly and uniformly arranged on the mounting plate along the axis of the connector; nozzles of the water curtain sprayers are obliquely arranged; through the cooperation of the structure, a cylindrical water curtain can be formed when the device drills a soil layer, the generated water curtain makes contact with a rock wall in real time, and dust is prevented from flying out as much as possible. By means of the device, efficient construction is conducted on a soil layer or a rock wall, and installation of a follow-up supporting structure is facilitated.

The invention discloses a forming process and forming equipment of a disposable dinner plate. The forming process comprises the following steps: S01, material preparation: drying a sheet for 1-2 hours in a dehumidification environment at 125-130 DEG C; s02, preheating is conducted, specifically, the dried sheet is flatly laid and subjected to double-face preheating, and then the sheet is conveyed to heating equipment; s03, heating is conducted, specifically, the preheated sheet is heated and softened through double-face hot air and conveyed to a mold; and S04, shaping is conducted, specifically, the bearing mold is preheated in advance, and after preheating, the bearing mold and the gas conveying mold are closed to form a closed space. According to the plastic forming equipment, a sheet is preheated to reduce humidity, so that bubbles generated by water evaporation in the heating process are reduced, the situation that when fillets are attached and separated, tearing occurs due to the fact that the bubbles are weak is avoided, the sheet is softened through double-face hot air, the fillets are attached, and sinking is avoided.

The invention relates to the technical field of aero-engine welding, in particular to a welding device and method for a thick plate installation supporting point assembly. The welding device comprises a front face device and a back face device, and during front face welding and back face welding, when the flange edge is placed on the positioning assembly, the flange edge is in butt joint with a pre-placed to-be-welded supporting point welding seam to form an X groove. An X groove is subjected to pre-welding cleaning, positioned welding and backing welding through manual argon arc welding and wire filling through automatic argon arc welding, and the complete welding process is achieved. Compared with manual argon arc welding, the reasonable machining method and suitable welding parameters are adopted, the appearance quality of welding seams of automatic argon arc welding is remarkably improved, and the welding deformation control effect on the titanium alloy X-shaped groove assembly is good.

The utility model is suitable for the technical field of wafer packaging, and provides an anti-sinking type wafer packaging box which comprises a box body, a box cover is arranged at the top end of the box body, connecting columns are fixed to the two sides of the bottom end of the box cover, clamping grooves are formed in the two sides of the interior of the box body, reserved grooves are formed in the clamping blocks, and the reserved grooves are communicated with the box body. A compression-resistant piece is fixed to the outer side wall of the reserved groove, and a reinforcing piece is fixed to the outer side wall of the compression-resistant piece. Through the arrangement of the protection structure, a plurality of reserved grooves are fixed to one sides of the compression-resistant pieces at equal intervals, the reserved grooves are correspondingly limited in clamping blocks through the clamping structures of the clamping blocks and the reserved grooves, and the two sets of compression-resistant pieces can be symmetrically limited to the outer side wall of the box body; the reinforcing pieces can be symmetrically limited on the outer side wall of the box body, and the outer side wall of the box body is protected through the reinforcing pieces and the compression-resistant pieces, so that the packaging box is firmer during use, and recesses are avoided.

The application relates to a bag-in-bag-out filtering device, which relates to the technical field of biological safety and comprises the following: a ventilation duct is arranged in a box body; an air inlet and an air outlet are arranged on the box body and communicate with the ventilation duct; one or more filters are movably arranged in the ventilation duct; an opening is arranged on the box body and communicates with the ventilation duct; a sealing door is detachably arranged on the opening; a detection piece is arranged on one side of the box body close to the sealing door; and a frame body is arranged in the box body and abuts against the filter; the box body comprises a main body, an air inlet shell, an air outlet shell and a cover plate, and the ventilation duct is formed between the main body and the cover plate; the frame body and the main body are integrally bent and formed, one end of the frame body is embedded in the main body, and the other end of the frame body is bent and connected with the end of the main body. Compared with a traditional filtering box, the filtering device is integrally formed, welding leakage is avoided, the filtering device is not easy to deform, good sealing performance and pressure bearing strength are maintained, and the cost is reduced.

The present invention discloses a valve expansion device with a reinforcement and a valve expansion system. The valve expansion device with a reinforcement includes a stent and at least one reinforcement. The stent includes a proximal end and a distal end that are arranged opposite to each other in the axial direction, and at least two expansion arms connected between the proximal end and the distal end. Each expansion arm can be expanded or compressed along the radial direction of the stent, and at least one expansion arm is provided with a cutting portion on the side away from the other expansion arms. The reinforcement is fixedly connected between two adjacent expansion arms, and the reinforcement and the expansion arm are synchronously expanded or compressed along the radial direction of the stent. The valve expansion device with a reinforcement provided in an embodiment of the present invention connects the expansion arms in pairs by arranging reinforcements so that the expansion arms are indirectly fixedly connected together, which can prevent the expansion arms from being deformed by external forces and concave radially inward during radial expansion, so that the expansion arms can continue to expand outward to ensure the expansion effect.

The utility model relates to an air conditioner indoor unit and an air conditioner, and belongs to the technical field of air treatment equipment. The utility model provides an air conditioner indoor unit and an air conditioner. The air conditioner indoor unit comprises a front panel, a rear panel and a handle assembly. Mounting grooves are formed in the side walls of the two opposite sides of the front panel, and the handle assembly is rotationally arranged in the mounting grooves so that the handle assembly can be switched between the storage position and the operation position; the handle assembly is configured in the mode that when the handle assembly rotates to the storage position, the handle assembly is completely located in the installation groove, when the handle assembly rotates to the operation position, at least part of the handle assembly is located outside the installation groove, and the handle assembly located outside the installation groove is grabbed to drive the front panel to move so that the front panel can be connected with the rear panel in a clamped mode. An acting point is provided for moving the front panel through the handle assembly, the front panel is prevented from sinking, and the assembly difficulty is reduced.

The utility model discloses a heat preservation air pipe which comprises a pipe body, a heat preservation mechanism is arranged on the pipe body, the heat preservation mechanism comprises an inserting plate and a fixing base, and a first heat preservation shell is inserted into the inserting plate. The heat preservation shell containing the heat preservation cotton is arranged on the outer wall of the pipe body, the heat preservation effect of the air pipe can be improved, due to the fact that the heat preservation cotton is arranged in the first heat preservation shell, the aging time of heat preservation materials can be shortened, and when the first heat preservation shell needs to be detached, a worker pushes the grip to enable the clamping rod to be separated from the groove in the clamping base, and the heat preservation effect is improved. Then the clamping rod is turned over with the connecting base as the axis, the clamping rod is made to be away from the clamping base, at the moment, the first heat preservation shell is not limited by the clamping rod and can be taken down from the pipe body, the first heat preservation shell can be rapidly detached and replaced, the air pipe can be protected through the first heat preservation shell, and the problem that the pipe body is sunken due to collision can be solved; and the service life of the air pipe is further prolonged.

The utility model relates to the technical field of detection tools, in particular to a box body detection tool. The box body detection tool comprises a workbench and a positioning frame. The positioning frame is arranged on the workbench; a positioning plate is arranged on the inner side of one border of the positioning frame; the positioning frame and the positioning plate are both provided with a plurality of positioning holes, and the first go-no go gauges can be inserted into the positioning holes. The plurality of supporting columns are arranged in the positioning frame; a plurality of first quick clamps are arranged on the outer side of the positioning frame, and the first quick clamps can press the box body on the positioning frame; the detection beam is arranged on the upper side of the positioning frame in an opening and closing manner, and the second go-no go gauge can penetrate through a gap between the detection beam and the box body. The box body is placed on the positioning frame, and the first rapid clamp tightly presses the box body on the positioning frame. The first go-no go gauge is inserted into each positioning hole to detect whether each aperture is qualified. The second go-no go gauge moves back and forth in the gap between the detection beam and the box body to detect whether the top of the box body is flat. The detection tool not only can detect each aperture, but also can detect the flatness, and the detection efficiency is higher.

The invention relates to the technical field of heat preservation pipes, in particular to a polyurethane heat preservation pipe heat preservation layer manufacturing process which comprises the following steps that S1, a conveying pipe penetrates through a protection pipe, the two ends of the protection pipe are connected with the conveying pipe through a support, and the protection pipe and the two ends of the conveying pipe are in a concentric state; the material injection opening is formed in the protection pipe, and then the fixing frame is arranged on the conveying pipe. The outer wall of the protection pipe is fixed after pipe penetrating, so that the problem that the thickness of a manufactured heat preservation layer is not uniform due to the fact that the protection pipe is eccentric due to the fact that the protection pipe collapses under the action of gravity is avoided, and therefore on the premise that the use of a wood block support is reduced, the concentricity of the protection pipe and the conveying pipe can still be guaranteed, and the uniformity of the heat preservation layer is guaranteed; in this way, the service life of the polyurethane thermal insulation pipe is prolonged, use of wood block supports is reduced, pipe penetrating can be more convenient, and the manufacturing efficiency of a thermal insulation layer of the polyurethane thermal insulation pipe is effectively improved.

The invention relates to the technical field of semiconductor manufacturing, and discloses a chemical mechanical planarization method and a chemical mechanical planarization device.The chemical mechanical planarization method comprises the steps that a to-be-planarized structure is provided, the to-be-planarized structure comprises a substrate layer and a sacrificial layer, a groove is formed in the substrate layer, the sacrificial layer is located on the surface of one side of the substrate layer, and the sacrificial layer is located on the surface of the other side of the substrate layer; the sacrificial layer fills the groove; performing a chemical mechanical planarization step on the surface of one side, deviating from the substrate layer, of the sacrificial layer according to the first process parameter; performing a chemical mechanical planarization step on the surface of one side, deviating from the substrate layer, of the sacrificial layer according to a second process parameter; and when the thickness of any area of the sacrificial layer located on the substrate layer is reduced to zero, the polishing head sets the pressure value applied to the corresponding area of the sacrificial layer to be zero. And when the thickness of any area of the sacrificial layer located on the substrate layer is reduced to zero, the polishing head sets the pressure value applied to the corresponding area of the sacrificial layer to be zero, and the situation that the polishing head continues to polish the area is avoided.

The utility model discloses a chlorine liquefier tube head welding structure which comprises a tube plate and a plurality of heat exchange tubes, and the heat exchange tubes are arranged on the tube plate in a penetrating mode. The length of the part, extending out of the tube plate, of the tube head of the heat exchange tube is 0-1mm; the tube plate is provided with a groove used for being connected with a heat exchange tube, and the angle of the groove ranges from 45 degrees to 60 degrees. The heat exchange tube is in interference fit with the hole wall of the tube plate through expanded connection, and the groove is filled with a welding seam to fixedly connect the heat exchange tube with the tube plate. According to the chlorine liquefier pipe head welding structure, the welding quality of the chlorine liquefier pipe head can be improved, the connection reliability is enhanced, and leakage is effectively prevented.

The utility model relates to PE film processing technical field, concretely is a kind of PE winding film cutting device, including machine plate, the side surface fixed mounting of machine plate has roll stock frame, feeding frame and shearing bin, by setting control distance screw rod, control distance plate, spring, shearing frame, cutting knife, utilize the synergies of these structures, control distance screw rod cooperation control distance slide bar, make control distance plate can accurate lift, to control the cutting depth of cutting knife, satisfy half cut or complete cut two kinds of needs, pressing plate provides pressure by spring, ensure the flatness of cutting edge, by the sliding connection of pressing plate side surface and shearing frame inner side, the movement trajectory of cutting knife is restricted, guarantee the perpendicularity of cutting process, when cutting knife cuts into film, the fitting structure of control distance plate and cutting knife seat provides additional rigid support, reduce the deformation risk of cutting knife, prolong tool life, realize the control of PE winding film cutting depth, stability and precision, improve the efficiency and quality of packaging operation.

The utility model discloses a piston type ship ballast water self -balancing device, including ship body, one side of the inside of ship body is equipped with ballast A, and its other side is equipped with ballast B, is equipped with the communicating pipe between ballast A and ballast B, and the inside of ballast A is provided with multiple groups of negative pressure passage, the inside of negative pressure passage is inserted with piston, and the piston end is fixed with the connecting column, the transmission plate is fixed to the connecting column end. The piston type ship ballast water self -balancing device, the output end of cylinder drives the fixed drive seat and does linear motion, the movement of piston changes the air pressure in ballast A, and then realizes the quick transfer of fluid in ballast A and ballast B by the connection effect of communicating pipe, adjusts the weight distribution of both sides of ship body to offset the inclination force, can respond to the inclination of ship body in real time, effectively avoids the risk of rollover, and the compact structure design, movement steady, guarantee the safety and the comfort of pleasure boat navigation.

The utility model relates to the technical field of oil cylinder, especially to an anti-deformation oil cylinder body. The anti-deformation oil cylinder body comprises an oil cylinder body, a cast carbon steel layer is fixedly embedded on a high manganese steel layer, and a hot strength steel layer is fixedly embedded on the cast carbon steel layer; a plurality of rotatingly connected steel balls are sleeved on the steel ring between adjacent middle connecting plates. When external falling objects hit the steel balls, the steel balls can rotate flexibly along the arc-shaped ball grooves, on the one hand, the falling objects can quickly roll along the surface of the steel balls, avoiding the impact force acting on the cylinder wall of the oil cylinder body for a long time, on the other hand, the curved surface structure of the arc-shaped ball grooves can disperse the concentrated impact force to a larger area of the oil cylinder body, reducing local stress concentration and avoiding cylinder wall depression or cracking.

The invention relates to the technical field of printing machines, in particular to a screen printing machine with positioning and drying functions, the screen printing machine comprises a base, a sealing cover, a lifting moving mechanism and a fixing seat, and the sealing cover and the lifting moving mechanism are oppositely arranged above the base; compared with an existing screen printing machine, the screen printing machine is provided with the sealing frame, so that the steps of pretreatment, printing, drying and the like can be synchronously carried out, and then the working efficiency is improved. By means of the suction holes, the area, close to the suction holes, of the materials can be prevented from being sunken, and therefore it is guaranteed that ink can be evenly and completely conveyed to the surfaces of the materials; the materials printed with the ink can be dried through the fixing bases on the basis that it is guaranteed that the materials do not make contact with the external environment; and hot air after the ink is dried and waste gas generated when the ink is dried are continuously exhausted.

The utility model provides a stub bar pushing-in and collecting device for a cut-off machine, which comprises a support body, one side of the upper part of the support body is connected with transmission wheels, one side of the support body is connected with a cut-off piece, workpieces are connected among the plurality of transmission wheels, one side of the support body is connected with a classification mechanism, the classification mechanism comprises a chute channel, and the chute channel is connected with the cut-off piece. The sliding groove channel is formed in one side of the supporting body, a discharging channel is formed in the middle of the sliding groove channel, a fixing plate is connected to one side of the discharging channel, and a motor is fixed to one side of the fixing plate. Due to the arrangement of the sorting mechanism, after the third collecting box is filled with the workpieces, a transmission plate can slide downwards in a second sliding groove, a protection plate at the lower end of the third collecting box is made to make contact with the ground, then a handle is used for pulling a baffle to slide upwards in a first sliding groove, and the workpieces can roll out of the third collecting box.

The invention discloses a submerged sliding door cover assembly and projection equipment with the submerged sliding door cover assembly. The submerged sliding door cover assembly comprises an upper cover, a bearing seat and a door cover. The upper cover comprises an opening. And the bearing seat is arranged below the upper cover. And the bearing seat and the upper cover form a storage groove. And the door cover is positioned between the upper cover and the bearing seat. The upper cover, the door cover and the bearing seat are arranged in the first direction. The door cover is movably clamped to the opening hole in the first direction. The door cover slidably covers the open hole or is contained in the containing groove in the second direction. The second direction is perpendicular to the first direction.

The present disclosure provides a semiconductor device manufacturing method and a semiconductor device, belonging to the field of semiconductor technology. The method includes: providing a semiconductor substrate, including a first region and a second region, the upper surface of the first region is a dielectric layer; using a first mask layer to form a first conductive layer on the upper surface of the second region; using a second mask layer to selectively etch the dielectric layer and the first conductive layer to form a bit line contact hole in the first region and a gate electrode in the second region; forming a barrier layer; forming a second conductive layer to fill the gap between the bit line contact hole and the gate electrode, and cover the upper surface of the gate electrode; using a third mask layer to selectively etch the second conductive layer and the barrier layer to form a bit line structure in the first region and a gate structure in the second region. The present disclosure can improve the bit line contact, reduce the RC delay of the capacitor, and improve the poor contour depression of the peripheral gate structure, thereby improving device performance.

The invention discloses a flat steel wire forming die, and relates to the technical field of flat steel wire machining. The device comprises a device body, a motor is arranged in the device body, a base is arranged at the bottom of the device body, a heat preservation frame is arranged at the top of the base, an L-shaped plate is arranged on the inner wall of the heat preservation frame, and a collecting roller is arranged on the front face of the L-shaped plate; an anti-crack device is arranged on the front face of the device body, an anti-abrasion device is arranged on the right side of the anti-crack device, and an anti-bending device is arranged in the anti-abrasion device. Free adjustment of the forming width size of the raw materials is achieved, tedious steps caused by part replacement are omitted, and therefore the equipment practicability and the forming efficiency of the flat steel wires are improved, meanwhile, the extrusion die is preheated through heating equipment, stress concentration caused by direct cold start extrusion of the raw materials is prevented, and the product quality is improved. The use strength reduction caused by cold cracks on the surface of the formed flat steel wire is prevented.

The invention provides an asphalt pavement coring hole repairing structure, which comprises an asphalt pavement body, the asphalt pavement body comprises a pavement surface layer, and the pavement surface layer is provided with a surface layer coring hole; the repairing body is fixedly arranged in the surface layer coring hole through an auxiliary repairing mechanism, the repairing body comprises a repairing body, the repairing body comprises a core filling precast block and an expansion filling body, the core filling precast block is arranged in the center of the surface layer coring hole, and the expansion filling body is arranged on the periphery of the core filling precast block. The invention further provides an asphalt pavement coring hole repairing method. By means of the expansion characteristic of the expansion filling body, the compaction effect of the core filling prefabricated block and the side wall of the coring hole is enhanced; and meanwhile, by means of the characteristics of low-temperature shrinkage and high-temperature softening of the asphalt pavement material, the filling compaction degree in the coring hole and the interface bonding firmness strength of the coring hole are further improved.

This utility model relates to the field of profile technology and discloses a multi-layer anti-damage profile for refrigerated boxes, comprising a first aluminum plate; a second aluminum plate disposed at the bottom end of the first aluminum plate; an anti-damage component disposed between the first and second aluminum plates to improve the wear resistance of the first and second aluminum plates; the anti-damage component, in combination with a reinforcing plate and polyurethane foam, can efficiently absorb and disperse external impact forces, preventing dents and cracks in the first and second aluminum plates, extending the service life of the profile; the design of rubber pads, connecting boxes, and arc plates not only improves the impact resistance of the profile ends but also provides reliable support for the connection between the profile and the refrigerated box, enhancing the stability of the overall structure; a protective layer composed of fluorocarbon coating, polycarbonate, and aluminum foil moisture-proof layer provides all-round protection against external environmental erosion, preventing the profile from being corroded and damp, and reducing maintenance costs.

The utility model relates to PVC pipe technical field discloses a PVC pipe with reinforcing rib structure, including inner tube, the inside fixedly connected with six groups of fixed seat of inner tube, six groups of inner groove are seted up in the inside of six groups of fixed seat, six groups of inner groove are provided with six groups of stainless steel bar in the inside, the outside of inner tube is provided with outer tube, the outside fixedly connected with multiple groups of convex rib of outer tube, when using, through setting up stainless steel bar in the inside of inner groove, the tensile strength of stainless steel bar is far higher than PVC pipe, and stainless steel bar sets up along the pipe length direction, equivalent to forming longitudinal reinforcing framework in the inside of PVC pipe, when the pipe material is bent, stainless steel bar will directly bear the tensile stress, thereby prevent PVC pipe from breaking due to excessive stretching, through the outside fixedly connected with multiple groups of convex rib of outer tube, when the pipe material is subjected to lateral pressure, convex rib will contact external force first, and the pressure is transmitted to the whole outer tube wall, and then avoid local stress concentration and lead to pipe wall indentation or rupture.

The utility model discloses a steel lining Teflon storage tank with a leakproof function, which relates to the technical field of steel lining Teflon storage tanks and comprises a storage tank body, a top cover is mounted at the top of the storage tank body, a leakproof exhaust component is mounted at the top of the top cover, and the leakproof exhaust component comprises a pressure relief opening, a mounting pipe, an electromagnetic valve and a pressure gauge. The pressure relief opening is formed in the top of the top cover in a penetrating mode, an installation pipe is installed at the top of the pressure relief opening in a threaded sealing mode, the electromagnetic valve is installed at the top end of the installation pipe, and the pressure gauge is installed at the top of the top cover in a penetrating mode and electrically connected with the electromagnetic valve. When internal pressure gathers, the pressure gauge can detect and display the internal pressure and control the electromagnetic valve to be opened at the same time, so that the pressure gathered in the storage tank body passes through the pressure relief opening, the mounting pipe and the electromagnetic valve and is finally discharged through the pressure relief pipe, and leakage of the storage tank body caused by internal pressure gathering is avoided.

The utility model discloses a shell assembly machining punching device which comprises a bottom plate, a T-shaped support is fixedly connected to the middle of the rear side of the bottom plate, an embedding seat is fixedly embedded in the top end of the rear side of the T-shaped support, a discharging hole is formed in the middle front side of the top of the embedding seat, a material collecting groove is formed in the center of the front side of the embedding seat, and a punching hole is formed in the middle of the embedding seat. A rectangular shell is arranged on the outer side of the front end of the embedding base in a front-back sliding fit mode, electric push rods are fixedly connected to the rear portions of the left side and the right side of the embedding base, push plates are fixedly connected to the output ends of the front sides of the electric push rods, and the front sides of the push plates are attached to the rectangular shell in an extrusion mode. The top face of the embedded base can be attached to and assist in supporting the stamping part of the rectangular shell, horizontal stability of the stamping periphery of the rectangular shell is kept, the sinking problem is avoided, meanwhile, the rectangular shell can be supported upwards, the compressive strength of the two sides of the rectangular shell is reduced, and the bending deformation problem is avoided.

The utility model provides a multipurpose nodular cast iron well lid, and belongs to the technical field of well lids. Comprising a cover body which is arranged in a hollow column shape; the cover plate is rotationally connected to the upper part of the surface of the cover body through a hinge seat and is sealed with the cover body; the lower end face, located in the cover body, of the cover plate is provided with an expansion mechanism, and the expansion mechanism is configured to move outwards in the horizontal direction and make contact with the inner side of the cover body when the cover plate bears downward pressure in the vertical direction. The expansion mechanism, the reset mechanism and the guide mechanism are matched, when the well lid generates downward pressure due to external factors, the pressure acts on the guide mechanism, so that the guide mechanism can transmit the vertically downward pressure to the position of the expansion mechanism, and the well lid is expanded. Therefore, the expansion piece in the expansion mechanism can abut against the cover body, the well lid can be stabilized, the connection strength between the cover plate and the cover body is improved, the well lid is prevented from being loosened under external factors, and stability is improved.

The utility model discloses oil pump noise detection equipment, which belongs to the field of noise detection equipment and comprises an oil tank, and the top of the oil tank is provided with a fixing structure for installing an oil pump. The oil tank further comprises an input port and an output port. The input port is used for being connected with an oil inlet formed in an oil pump, and the output port is used for being connected with an oil outlet formed in the oil pump; the multiple detection assemblies are arranged above the oil tank and located around the fixing structure; the detection assembly comprises a supporting rod and a sound receiver; the supporting rod is vertically arranged relative to the top surface of the oil tank; a sound receiver is detachably mounted at the upper end of the supporting rod; the supporting rods are located on the same straight line. The distances between the multiple supporting rods are gradually increased in the direction away from the fixing structure. The heights of the supporting rods are gradually increased in the direction away from the fixing structure. And the controller is electrically connected with the plurality of sound receivers. According to the utility model, the detection is convenient, and the detection efficiency can be improved while the data reliability is ensured.

The utility model relates to the technical field of photovoltaic power generation, in particular to a photovoltaic module support for PHC pipe piles with different heights, which comprises a PHC pipe pile and a photovoltaic power generation panel group, and is characterized by comprising a hoop detachably connected to the PHC pipe pile, an adjusting frame detachably connected to the hoop, and an oblique beam arranged at the top end of the adjusting frame, the photovoltaic power generation panel group is installed on the oblique beam, a plurality of adjusting holes are formed in the adjusting frame at equal intervals in the length direction of the adjusting frame, and the hoops are detachably connected with the adjusting holes through first bolts; according to the utility model, when the PHC pipe pile descends along with underground settlement or frost heaving, the height of the support on the PHC pipe pile can be adjusted, so that the photovoltaic power generation panel group is prevented from being in a concave or convex state due to bearing stress of different heights, and the safe and stable operation of the photovoltaic power generation panel group is ensured.

The utility model discloses a thermoplastic polypropylene (PP) cellular board, which relates to the technical field of cellular boards and comprises an upper surface layer, a lower surface layer and a cellular structure layer, the upper surface layer and the lower surface layer are respectively adhered to the upper surface and the lower surface of the cellular structure layer in a hot melting manner, and the cellular structure layer comprises an upper cellular layer and a lower cellular layer which are arranged in parallel. The upper honeycomb layer comprises a plurality of round tube core materials, the round tube core materials are arranged in a honeycomb shape along the same plane, energy absorption inner cylinders are fixedly bonded to the inner walls of the round tube core materials, and trumpet-shaped pressure dispersing holes are formed in the upper ends and the lower ends of the energy absorption inner cylinders. The energy-absorbing inner cylinder is arranged in the circular tube core material, the energy-absorbing effect of the energy-absorbing inner cylinder can be improved through the trumpet-shaped pressure dispersing holes in the energy-absorbing inner cylinder, sudden breakage of the circular tube core material is avoided, the supporting force of the circular tube core material can be enhanced through the cooperation of the reinforcing ribs, and therefore the overall pressure resistance of the cellular board can be improved, and the breakage probability can be reduced.