39results about How to "Prevent deformation and cracking" patented technology

The application discloses a die-casting device for window sliding wheel machining, which comprises an operating machine table arranged on the ground, a die-casting base fixedly arranged at the middle of the bottom of the inner cavity of the operating machine table, and a limiting guide rod fixedly arranged at the top of each corner of the die-casting base, and belongs to the technical field of die-casting. The die-casting device for window sliding wheel machining is characterized in that the upper die, the hydraulic rod, the lower die mechanism and the electric telescopic rod are matched to realize efficient and stable die-casting. During die-casting, the structures are cooperatively driven to automatically circulate and flow the cooling liquid, the cooling and shaping are rapidly completed, the processing efficiency is effectively improved, the circulating cooling liquid can drive the inside of the lower die mechanism to generate high-frequency oscillation, the internal bubble defects of the casting are eliminated, the product structural strength and surface quality are improved, meanwhile, the cooling liquid is uniformly disturbed in the die to improve the heat exchange efficiency, the temperature of the cavity is rapidly and evenly balanced, the deformation and cracking of the casting are prevented, the forming precision and product qualification rate are ensured, and the overall structure is simple, stable and reliable in operation.

The utility model relates to a movable kiln top cover and a communication system. The movable kiln top cover comprises a top cover body, the sealing ring is arranged right above the kiln body and is suitable for abutting against the top of the kiln body so as to seal the kiln body; the upper cover is suitable for being connected with the top cover body; a plurality of supporting pieces are arranged on the side, facing the top cover body, of the upper cover and are suitable for supporting the upper cover and the top cover body on the upper cover. A driving part is arranged between the upper cover and the top cover body and is suitable for moving the top cover body towards the direction close to or away from the kiln body, the top cover body can be moved to any kiln for use, the application range is wider, meanwhile, the kiln bodies which are not used do not need to be independently provided with the top cover body, and the cost is reduced. Therefore, the cost is effectively reduced.

The invention provides a carbon fiber thermoplastic prepreg fabric laminated structure, a bending method and a box body, and relates to the technical field of box body forming. The laminated structure comprises a bottom intercalation alternate overlapping region, a middle interface transition reinforcing region and a top step transition region; the bottom intercalation alternate lap joint area comprises a plurality of layers of carbon fiber thermoplastic prepreg fabrics of which the edges are mutually lapped, and the lap joint areas of all the layers coincide in the thickness direction; the middle interface transition reinforcing area covers the lap joint area; the top step transition area comprises a plurality of layers of carbon fiber thermoplastic prepreg fabrics, wherein the edges of the carbon fiber thermoplastic prepreg fabrics are arranged at set distances, and cavity areas formed between the edges of all the layers coincide with the lap joint areas in the thickness direction. During bending, the middle interface transition reinforcing area is a neutral surface, the bottom intercalation alternate lap joint area generates tensile deformation, the lap joint structure generates interlayer slippage in the bending process, and deformation and cracking are prevented; the top step transition area generates compression deformation, and the cavity area is arranged in advance to prevent redundant materials from being extruded to generate wrinkles and interlayer separation.

The utility model relates to the technical field of geological sample sampling devices, and discloses a geological stratified sampling device for geological mining, which comprises a movable base provided with a central hole, and a limiting ring rotatably connected in the central hole; the sampling barrel selectively penetrates through the central hole; the telescopic sleeves are sequentially connected in a sliding mode from the outer side to the inner side in the vertical direction, the telescopic sleeve on the outermost side is connected with the inner side wall of the limiting ring in a sliding mode, the inner side wall of the telescopic sleeve on the innermost side is connected with the sampling barrel in a sliding mode, and the sampling barrel can drive the telescopic sleeve on the innermost side to synchronously move downwards. And then the multiple sections of telescopic sleeves from the inner side to the outer side are driven to be sequentially embedded in the drill hole. The sampling barrel can drive the telescopic sleeve on the innermost side to synchronously move downwards, then the multiple sections of telescopic sleeves are driven to be sequentially embedded in a drill hole, collapse of the drill hole is avoided, and layered multi-time sampling of stratums with different depths is achieved.

The utility model discloses a wall waterproof structure which comprises a wall, a leveling layer is arranged on one side of the wall, a first cement mortar layer is arranged on the side, away from the wall, of the leveling layer, a heat preservation layer is arranged in the first cement mortar layer, and a second cement mortar layer is arranged on the side, away from the leveling layer, of the first cement mortar layer. A protective net layer is arranged in the second cement mortar layer, and a waterproof layer is arranged on the side, away from the first cement mortar layer, of the second cement mortar layer. According to the wall waterproof structure, the heat preservation layer is arranged in the first cement mortar layer, so that the strength and the bearing capacity of the heat preservation layer are improved, the first cement mortar layer and the second cement mortar layer are firmly bonded and are not prone to falling off through the arranged grasping protrusions, water is prevented from entering the whole wall structure through the arranged waterproof layer, and the waterproof performance of the wall structure is improved. By arranging the protective net layer, the strength of the second cement mortar layer is improved, the second cement mortar layer is not prone to deformation, and the waterproof layer is prevented from cracking and deforming.

The utility model discloses a polyurethane (PU) conveying belt with anti-shearing capability, which comprises a PU conveying belt main body, and the PU conveying belt main body comprises an anti-shearing PU layer, a polyurethane bottom edge layer and a tensile belt core layer distributed between the anti-shearing PU layer and the polyurethane bottom edge layer. The tensile belt core layer comprises a first glass fiber layer, an adhesive layer, a first polyester textile fabric layer, a second glass fiber layer and a second polyester textile fabric layer which are sequentially arranged from the anti-shearing PU layer to the polyurethane bottom edge layer, and the surface of the first glass fiber layer is provided with a tension strip extending and protruding into the adhesive layer; the tensile belt core layer in the PU conveying belt body is provided with the first glass fiber layer and the second glass fiber layer, glass fibers have the tensile capacity such as high strength and impact resistance, the tensile capacity of the tensile belt core layer between the anti-shearing PU layer and the polyurethane bottom edge layer is improved, the tension strips are stably bonded with the bonding glue layer in large-area contact, and the tensile strength of the tensile belt core layer is improved. And the tensile capacity of the anti-shearing PU layer on the PU conveying belt main body is improved.

The application discloses a multiple-reinforced steel-plastic composite pipe for low-pressure drainage and relates to the technical field of steel-plastic pipe fittings.The pipe body is internally lined with a support pipe;the outer side wall of the pipe body is provided with a reinforcing assembly;the middle part of the inner side wall of the pipe body is provided with an inner pipe;and a cavity is arranged between the pipe body and the outer side wall of the inner pipe;the inner side wall of the pipe body is provided with a clamping assembly at both ends;the clamping assembly is connected with a connecting piece;and a sealing ring is arranged between the clamping assembly and the connecting piece.The multiple-reinforced steel-plastic composite pipe for low-pressure drainage effectively improves the overall strength and deformation resistance of the pipe, avoids the separation of the steel and plastic layers, has high structural stability, simultaneously adopts a bidirectional clamping limiting and double-sealing structure, greatly improves the pipeline butt joint precision and sealing reliability, can effectively prevent interface leakage and silt backflow, is suitable for complex low-pressure drainage working conditions, has a longer service life, and can adapt to displacement and settlement.

The utility model discloses an elbow pipe with long service life, which comprises an elbow pipe main body, connecting threaded pipes are fixedly arranged at two ends of the elbow pipe main body, and sealing components are sleeved on the surfaces of the connecting threaded pipes; an outer protection assembly is fixedly arranged on the surface of the bent pipe body. A reinforcing assembly is fixedly arranged at the bent position of the bent pipe body, the surface of the reinforcing assembly is coated with a polyurethane coating, a cavity is formed in the inner wall of the bent pipe body, a reinforcing metal wire is fixedly arranged in the cavity, the sealing assembly comprises a silica gel ring and a rubber ring, and the silica gel ring is connected to the surface of a connecting threaded pipe in a sleeving mode. According to the elbow pipe with the long service life, the outer protection assembly and the reinforcing metal wires are arranged, the reinforcing metal wires are used for improving the tensile property of the elbow pipe body, the extrusion polyethylene layer and the polyurethane layer can protect the outer layer of the elbow pipe body, deformation and fracture caused by the temperature difference between the interior and the exterior of the elbow pipe body are avoided, and the service life of the elbow pipe body is prolonged.

The invention relates to the technical field of electrics, in particular to an explosion-proof power supply and power supply equipment box for test equipment, which comprises an explosion-proof power supply body, an explosion-proof power supply box body is arranged on the outer wall of the explosion-proof power supply body, a buffer mechanism is arranged in the explosion-proof power supply box body, a voltage reduction mechanism is arranged on one side of the explosion-proof power supply box body, and the voltage reduction mechanism is arranged on the other side of the explosion-proof power supply box body. And the buffer mechanism. The explosion venting pipe is opened, so that the pressure in the explosion-proof power box body is released, the pressure level in the explosion-proof power box body is reduced, the damage of explosion to the surrounding environment and personnel is avoided, and correspondingly, along with the release of the pressure in the explosion-proof power box body, shock waves generated by explosion can be relieved to a certain extent; the explosion-proof power box is simple in structure and convenient to use, damage of explosion to the surrounding environment and personnel can be reduced, meanwhile, the explosion-proof power box body is prevented from being broken and deformed when the pressure in the explosion-proof power box body is too high, and the risk of breakage of the explosion-proof power box body is further reduced.

The utility model discloses an automatic drying device for iron oxide pigment production, which relates to the technical field of iron oxide pigment production and comprises a drying tank, a rotating motor is fixedly mounted in the middle of the upper end of the outer surface of the drying tank, and a moving mechanism is arranged at the lower end of the rotating motor. The moving mechanism is composed of a reciprocating screw rod, a transmission spring, a connecting rod, an inner threaded cylinder, a limiting sliding block, a fixing cylinder, a limiting sliding groove and a bearing ring, the lower end of the output end of the rotating motor penetrates through the drying tank to be fixedly provided with the reciprocating screw rod, and the transmission spring is fixedly installed at the upper end of the inner surface of the reciprocating screw rod; and a connecting rod is fixedly arranged at the lower end of the transmission spring. Compared with an existing automatic drying device for common iron oxide pigment production, the automatic drying device for iron oxide pigment production has the advantages that the rotating rod and the heating rod can rotate and stir in an up-down moving mode, materials on all stacking layers in the tank body can make full contact with the heating rod, uniform and efficient drying is conducted, and the drying efficiency is improved.

The utility model relates to a kind of high-strength integrated foam box, including box and lid, box and lid are made of high-density EPP material integrated molding, the outside of box is wrapped with glass fiber reinforced net, glass fiber reinforced net is fixedly connected with box by epoxy resin glue, and cover the outer wall of box, the bottom of lid is integrally formed with two symmetrical positioning plates, the top of box is provided with the positioning slot that is in accord with two positioning plates, lid is connected with box by being inserted in positioning slot with positioning plate. The utility model is integrally formed with box and lid by using high-density EPP material, and it is matched with glass fiber reinforced net outside box, which greatly enhances the impact resistance, tensile strength, avoids rupture deformation, realizes accurate positioning of lid through positioning plate and positioning slot, cooperates with anti-skid ridge to prevent loosening, forms collaborative protection through EVA cushioning layer inside box and bottom modified PP reinforcing plate, can disperse impact energy, improve bearing capacity, effectively protect precision fragile goods.

This utility model relates to a high-strength packaging carton in the field of cardboard boxes. It includes an outer shell, with a lid and a bottom plate respectively added to the upper and lower parts of the outer shell. The outer shell, lid, and bottom plate constitute the box body. The box body is made of multi-layer high-strength corrugated cardboard. Nylon fasteners are connected to the lid and outer shell at corresponding locations. The Nylon fasteners consist of a first rough surface and a first hook surface, which are respectively connected to the outer shell and the lid. The outer surface of the outer shell is coated with a waterproof and moisture-proof coating. The outer shell includes a composite reinforcement layer comprising a glass fiber reinforced mesh and a polyester film. The glass fiber reinforced mesh is disposed on the inner wall of the outer shell, and the polyester film is disposed on the outer side of the outer shell. A three-dimensional reinforcing frame is added to all four sides of the inner wall of the outer shell. The three-dimensional reinforcing frame is an overall "well"-shaped honeycomb paper core. The three-dimensional reinforcing frame is bonded to the inner wall of the outer shell using hot melt adhesive.

The utility model discloses a kind of propaganda leaflets with wear-resistant structure, it is related to propaganda leaflet field.The utility model includes leaflet main part, the back side of leaflet main part is rotatably installed with propaganda rotating plate by rotating buckle, a plurality of single information printing plate are provided on the propaganda rotating plate, the surface of leaflet main part is provided with through slot, any single information printing plate is opposite with through slot position, the utility model is connected by rotating buckle with leaflet main part hinged, the rotation switching of information plate is realized instead of traditional folding, avoid structure tear, simultaneously, single information printing plate is protected in the interlayer space formed by leaflet main part and propaganda rotating plate, reduce the wear and tear of printing surface caused by physical contact, first, annular arrangement single information printing plate and through slot linkage, ensure that the rotation process is balanced and stable and simplify operation, simultaneously, information printing surface is designed to the inside of leaflet main part, isolated external pollution, prolong content clarity.

The utility model provides a kind of solid wood ecological board moisture content intelligent regulation and control drying equipment, it is related to solid wood ecological board processing equipment technical field, including support and box, the side surface hinged connection of box has box door.The utility model is by heating tube, heating fan, humidifier, dehumidification fan and moisture content sensor being arranged inside box, and by temperature controller and electric control panel centralized regulation and control, form intelligent temperature and humidity closed loop system, can according to solid wood ecological board moisture content real-time adjustment heating power, wind speed and humidity compensation, realize accurate drying;While placing frame is connected by shaft and worm gear mechanism, is rotated by motor drive, so that board is evenly heated in drying process, effectively avoid local overheating or uneven drying caused by deformation cracking, significantly improve drying quality and efficiency, while the adjusting rod rotation of adjusting mechanism, moving block slides along guide rod and drives placing plate to move up and down, it is convenient to adjust board spacing to adapt to different specifications.

This invention discloses a magnesium-lithium alloy cabin structure component and its forming method, belonging to the field of magnesium-lithium alloy forming technology. The method includes the following steps: S1. Pre-treatment of the magnesium-lithium alloy ingot, followed by free forging or extrusion to obtain a billet; S2. Die forging the billet and air-cooling it to room temperature to obtain a forging; S3. Holding the forging at 270~290℃ for 4~6 hours, then quenching it in cold water and performing T5 heat treatment; finally, aging strengthening by holding it at 180~220℃ for 8~12 hours. The forming method of this invention improves product uniformity through pre-treatment and enhances product strength and toughness through heat treatment. This forming method has broad application prospects and is expected to be industrialized.

The utility model relates to the technical field of gypsum lines, in particular to a gypsum line fixing device which comprises a fixing plate and a mounting plate, the fixing plate is connected with a fixing screw, an inserting plate, a first gypsum line and a second gypsum line; the mounting plate is connected with a limiting plate I, a connecting plate and a limiting plate II, and the mounting plate is connected with an internal thread cylinder; the device has the beneficial effects that a connecting plate, a first limiting plate and a second limiting plate on a mounting plate are inserted into inserting holes and limiting groove holes in a first gypsum line and a second gypsum line correspondingly, meanwhile, an inner threaded cylinder is inserted into a through hole, preliminary limiting is conducted, then an inserting plate is inserted into a butt joint groove, and the inner threaded cylinder is inserted into the through hole; and then fixing screws penetrate through the fixing plates to be in threaded connection with the inner threaded cylinders, and finally the fixing screws penetrate through the butt joint holes to be fixedly connected with the corresponding wall surfaces, so that the first gypsum line and the second gypsum line are fixed, the structure is simple and stable, the connecting strength is high, firmness is improved, and cracking deformation is avoided.

The invention relates to the technical field of electroplating equipment, in particular to an annular high-purity copper phosphorus anode for an integrated circuit and a preparation method of the annular high-purity copper phosphorus anode. The preparation method comprises the following steps: firstly, smelting to prepare a copper-phosphorus cast ingot, then carrying out homogenization heat treatment on the cast ingot, then carrying out reverse extrusion deformation to obtain a tube blank, then carrying out low-temperature stress relief annealing treatment on the tube blank, and finally, cutting, machining and forming, cleaning, drying and packaging the tube blank to obtain the annular high-purity copper-phosphorus anode. According to the preparation method disclosed by the invention, the grain size and the component uniformity are controlled by carrying out homogenization treatment, adjusting the extrusion temperature and the extrusion ratio and carrying out low-temperature annealing treatment on a cast ingot, and meanwhile, a plurality of copper-phosphorus target blanks can be obtained at one time by cutting a copper-phosphorus alloy pipe; by means of the preparation method, it can be guaranteed that crystal grains are evenly distributed, segregation of the P element is avoided, residual stress of the material is eliminated, deformation and cracking of follow-up machining blanks are prevented, meanwhile, the technological process can be remarkably shortened, the production efficiency is improved, and the production cost is reduced.

The utility model relates to the technical field of battery anode and cathode material production and preparation devices, in particular to a spliced graphite sagger which comprises a frame body and a bottom plate which can be mutually connected to form a cavity, the frame body comprises a plurality of column feet and a plurality of side plates, and the adjacent column feet are connected through the side plates. The spliced graphite sagger is simple in structure, few in core parts and consistent in specification, if the same graphite sagger adopts column feet of the same specification and side plates of the same specification, the production efficiency of the spliced graphite sagger can be greatly improved, meanwhile, splicing is easy, firmness is high, the parts can be directly replaced under the condition that the parts are damaged, and the production cost is reduced. And the maintenance cost can be effectively reduced.

The utility model discloses a kind of high-gloss abrasion-resistant terrazzo slab of aggregate directional arrangement, including slab body, the slab body is composed of surface layer and base layer;The surface layer is arranged above base layer, the surface layer includes the aggregate of directional arrangement, the aggregate includes one or more of marble aggregate or quartz sand aggregate, the surface of the aggregate is provided with wear layer, the wear layer is the mixed coating of nanometer ceramic particle and resin, the wear layer covers on the surface of aggregate.This device can form unique, beautiful pattern and texture by setting the aggregate of directional arrangement, greatly improve the decorative of terrazzo slab, meet the demand of different architectural decoration style, the setting of wear layer, utilize the high hardness and wear resistance of nanometer ceramic particle and resin mixed coating, effectively reduce the wear and tear and scratch on the surface of slab, the setting of high-gloss coating, make the surface of slab have high gloss, the reinforcing rib of grid distribution in base layer, enhance the structural strength of base layer.

The utility model discloses a scaffold wall connecting piece which is used for connecting a bare concrete wall and a scaffold and comprises a tie screw rod installed on an original screw hole of the bare concrete wall, a locking piece is arranged at the end, facing the scaffold, of the tie screw rod in a penetrating mode, and the locking piece and the tie screw rod are fastened through threads. Connecting steel pipes are arranged between the locking pieces and the bare concrete wall body, and the connecting steel pipes are arranged on the two sides of the tie screws and fastened to the bare concrete wall body through the locking pieces. The connecting steel pipe is fixedly connected with a wall connecting steel pipe used for being connected with a scaffold in a pulling mode. Battens for protecting the fair-faced concrete wall are further arranged between the connecting steel pipes and the fair-faced concrete wall, and the wall connecting steel pipes and the battens are symmetrically arranged on the two sides of the tie screws. According to the utility model, only one tie screw is matched with the locking piece, the connecting steel pipe and the wall connecting steel pipe, so that stable tie of the scaffold can be realized, the damage to a wall body caused by eccentric stress of the tie screw is avoided, the safety is high, and the mounting and the dismounting are convenient.

This utility model discloses a cable tractor and cable towing device. The cable tractor includes a track, a connector, and a vehicle body. The vehicle body is slidably connected to the track. One end of the connector is connected to the vehicle body, and the other end is detachably connected to the track. When the cable tractor passes near a gradient change point, the connector is connected to the track, fixing the vehicle body relative to the track and preventing the vehicle body from sliding off the track. In use, by setting the connector on the vehicle body, when encountering a gradient change point, the end of the connector away from the vehicle body is connected to the track, preventing the vehicle body from sliding on the track and exerting a large force on the pushing frame, avoiding cracking and deformation of the pushing frame, and ensuring the safety of the cable towing operation.

This invention discloses a casting briquetting machine, comprising a base with columns at each of the four corners, a top plate on each column, a hydraulic cylinder on the top plate, the output end of the hydraulic cylinder slidably mounted inside the top plate, a connecting plate on the output end of the hydraulic cylinder, the connecting plate slidably mounted on the columns, and a pressure block at the bottom of the connecting plate. In this invention, the downward pressure of the hydraulic cylinder drives the connecting plate and the pressure block downwards, and through the connection of a compression spring, pushes a buffer plate downwards, causing a moving frame to lower a trapezoidal clamping block. When the moving frame is in contact with the base, the hydraulic cylinder pushes the connecting plate, causing the buffer plate to continue to descend, and driving an inclined guide post to insert into the trapezoidal clamping block, thereby causing several trapezoidal clamping blocks to move closer to each other synchronously, thus forming a rectangular forming groove. The bottom of the forming groove is shielded by the base, and the top of the forming groove is pressed in by the continuously pressing pressure block, thereby achieving the purpose of casting briquetting.

This invention relates to the field of architectural decoration construction technology, specifically a type of HPC panel for exterior decorative styling with a steel truss back. The panel includes an HPC board, connecting components, embedded components, and several truss risers. A steel truss structure, consisting of truss risers and combined beams, is installed on the back of the HPC board via the connecting components and embedded components. This avoids the later construction problems associated with splitting the HPC board into multiple pieces. The embedded components are then connected to the steel truss through a designed structure, improving the stability of the support connection. For example, the segmented arrangement of long angle steel provides stress relief gaps for the HPC board, preventing cracking and deformation. Distributed first short angle steel, long angle steel, second short angle steel, and supporting square tubes improve the multi-point stress support of irregularly shaped HPC boards, enhancing support stability. Furthermore, the assembled steel truss structure, combined with the building's main structure connectors, allows for the installation of various shaped HPC boards in a unified manner with the building structure.

The utility model relates to the technical field of sealing ring processing, and discloses a drying device for rubber sealing ring processing and production, which comprises a drying placing box, a movable box door is movably mounted on the right side of the front surface of the drying placing box through a hinge, and fixed support legs are fixedly mounted at the bottom of the drying placing box. A drying hot air device is arranged at the middle end of the bottom of the drying containing box, a ventilation opening is formed in the top of the drying containing box, and the uniform drying rotating mechanism is arranged and can conduct mutual staggered reverse rotation on rubber sealing ring bodies on the first sealing ring rotating frame assembly and the second sealing ring rotating frame assembly; and hot air generated by the hot air drying device evenly passes through the rubber sealing ring body, it is ensured that the rubber sealing ring body can be dried more evenly, deformation and cracking of the rubber sealing ring are avoided, the drying effect of the whole device is improved, and meanwhile the drying efficiency of the whole device is improved.

This utility model belongs to the field of metallurgical engineering, specifically a rapid cooling sintering structure, including a machine body. A cooling mechanism is installed inside the machine body, and a transmission frame is fixedly installed inside the machine body. Several first rotating shafts are rotatably connected inside the transmission frame, and a transmission belt is mounted on the surface of the several first rotating shafts. By setting up the cooling mechanism, a high-efficiency heat exchange channel is formed by symmetrically penetrating the sintered ore layer with dual airflows, thereby increasing the cooling intensity. Furthermore, the symmetrical airflow coverage eliminates the temperature gradient caused by unilateral cooling, achieving uniform heat dissipation of the workpiece cross-section and avoiding deformation and cracking caused by thermal stress concentration. By setting up a transmission component, a single power source drives two cooling spiral blades to operate synchronously, while rigid transmission ensures that the speeds of the two fans are completely consistent, improving the uniformity of airflow coverage and eliminating cooling blind spots caused by asynchronous airflow.

The present invention belongs to the technical field of aero-engine manufacturing, and relates to a flame tube manufacturing method based on laser powder bed melting additive manufacturing technology; the method first pre-processes the established three-dimensional digital model of the flame tube: when processing the three-dimensional digital model of the flame tube, support is added to the digital model of the flame tube, and the contact position between the support structure and the surface of the flame tube is the position of the outer surface of the cooling hole; and an allowance is added to the cooling hole position on the outer surface of the three-dimensional digital model of the flame tube that is not covered by the support structure, and the support and the allowance are both cylindrical structures with a height of 1 to 5 mm; then the digital model is sliced, and the flame tube is prepared by laser powder bed melting additive manufacturing; finally, the support is removed, and the cooling hole is processed based on the position of the support and the allowance to complete the flame tube manufacturing. The unique support and allowance addition scheme ensures the position accuracy of the small-sized cooling holes on the flame tube, and meets the high-quality, high-precision and high-efficiency manufacturing of complex thin-walled structures and small-sized cooling holes.

The invention provides electrical equipment. The electrical equipment comprises a circuit board, a main conductive bar and a fixed bracket, binding posts are fixed on the board surface of the circuit board; a circuit board lap joint hole is formed in the rear end of the main conductive bar, a terminal wiring hole is formed in the front end of the main conductive bar, and the main conductive bar is fixedly connected with the binding post through a fastener penetrating through the circuit board lap joint hole; a wiring isolation space is formed in the fixing support, the main conductive bar is fixed in the wiring isolation space, the fixing support is fixed on the board surface of the circuit board in a lap joint mode, and the binding posts and the fixing support jointly form support between the main conductive bar and the circuit board. According to the invention, the installation process is simplified, and the internal electric connection structure of the equipment is simpler and more beautiful; the hard connection between the circuit board and the main conductive bar also enhances the bonding strength between the circuit board and the main conductive bar, and the problem of connection failure is not easy to occur; a modular installation mode is adopted, so that higher installation efficiency can be obtained; the assembly difficulty is lower, and the use reliability is higher.

The utility model discloses a kind of movable arm crossbeam and loaders in the engineering machinery technical field, wherein the loader includes fuselage, movable arm is equipped on the fuselage, movable arm drives movable arm crossbeam to move.Movable arm crossbeam includes including beam body and support plate.The beam body is long box structure with internal hollow.Multiple support plates are evenly spaced along the length direction of beam body, and positioning hole for beam body is equipped on support plate and support plate is fixedly connected with beam body.When movable arm drives movable arm crossbeam to move, support plate is evenly applied to beam body by positioning hole on external force, so that stress does not overly concentrate in the partial of beam body and cause movable arm crossbeam partial cracking failure.The beam body is complete long box structure, with good anti-deformation ability.Effectively improve the service life of movable arm crossbeam.

The air-cooled pressure cooker comprises an inner container and a heat preservation cover located on the outer side of the inner container, a cooling cavity is formed between the side wall of the inner container and the side wall of the heat preservation cover, an annular air channel which extends in the circumferential direction of the inner container and is enlarged in the radial size is formed in the cooling cavity, and the heat preservation cover is provided with an air passing opening opposite to the annular air channel in position. The pressure cooker further comprises an air cooling unit for exhausting and / or supplying air to the cooling cavity through the air passing opening so as to cool the inner container. According to the air-cooled pressure cooker, the probability that airflow collides with the inner container and escapes into multiple strands of airflow, the multiple strands of airflow collide with one another to bear the kinetic energy loss phenomenon is reduced, the kinetic energy loss of the airflow in the movement process is reduced, the airflow can smoothly move in the annular air channel, the heat dissipation efficiency of the air-cooled unit can be improved, and the service life of the air-cooled pressure cooker is prolonged. The probability of whistling caused by rapid collision between the airflow and the inner pot or the heat preservation cover in the high-pressure state is reduced, and the use experience of a user is improved.

The utility model discloses a kind of high-strength pressure-resistant CPVC cable protection pipe, belong to cable protection facility technical field, its technical scheme main points include pipe body, the both ends of the pipe body are respectively provided with flange end and recess end, the flange end and recess end cooperation form socket-and-spigot type connecting structure, the inside of the pipe body is provided with center pressure-bearing column, and the surface of center pressure-bearing column is annularly provided with a plurality of pressure-bearing plate integrated with it, cable placing cavity is formed between adjacent pressure-bearing plate, by the multilayer composite structure of pipe body and inside center pressure-bearing column, pressure-bearing plate form inside and outside collaborative support, greatly improve overall extrusion resistance, can resist underground buried depth pressure or ground heavy object rolling pressure, avoid pipe body deformation rupture, and buffering heat insulation layer absorbs external impact energy through closed-cell bubble, reduce construction collision, stone impact damage to pipe body, and inner wall anticorrosive layer and CPVC outer pipe layer cooperate to resist corrosion and wear, adapt to complex soil environment.