47results about How to "Avoid dents" patented technology

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 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 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 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 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 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 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.

The utility model discloses a hanging shell and a tie provided with the same. The problems that when an existing tie is worn, tying of a tie knot is troublesome, and shaping is not easy are solved. The hanging belt comprises a hanging belt and a hanging shell, the hanging shell comprises a shell body, and a containing cavity is formed in the shell body. The first position is separated from the shell, and the second position is inserted into the shell, matched with the shell and used for limiting the hanging belt. The mounting piece can limit the hanging belt to form the tie, the knot root of the tie is prevented from sinking inwards to form a dimple, the tie can be shaped without tying a tie knot when the tie is worn, and the tie is convenient to wear and easy to operate. The installation part is detachably connected with the shell and can be matched with different hanging belts according to needs, diversification is achieved, and replacement is convenient and fast. The device also has the advantages of simple structure, simplicity and convenience in operation, long service life and the like.

The application discloses a reinforcing cage deflection control device and a thickness control method thereof, and particularly relates to the field of reinforcing cage deflection devices. The reinforcing cage deflection control device comprises a steel casing, a rotating support device is installed on the steel casing, the rotating support device is a first adjusting mechanism, the first adjusting mechanism comprises an adjusting outer limiting seat, an inner limiting seat is slidably arranged on the inner side of the outer limiting seat, a driving assembly one is installed on the outer limiting seat, the driving assembly one drives the inner limiting seat to rotate, and an abutting plate is installed on the inner wall of the inner limiting seat; a clamping groove is formed on the outer side of the outer limiting seat, and a sliding groove is formed on the inner side of the outer limiting seat. By rotating the inner limiting seat, the abutting plate can contact the reinforcing cage at different positions during the reinforcing cage deflection lowering process, so that the abutting plate is prevented from continuously contacting and rubbing against the same position of the reinforcing cage, the abutting plate is effectively prevented from swelling and deforming due to friction heating or being excessively worn and concave, and the limiting precision of the abutting plate is ensured.

This utility model relates to the field of plate pressing machine technology, and in particular to a detachable cleaning structure for a plate pressing machine, comprising: a plate pressing machine body, an installation component, and a cleaning component; the plate pressing machine body is connected to a main pressing plate and a buffer plate; the installation component is connected to the plate pressing machine body; the installation component includes an installation frame, installation block a, and a support member; the two ends of the installation frame are respectively connected to the installation block a, and the installation block a is connected to both sides of the plate pressing machine body and is detachably connected; and the cleaning component is connected to the installation component and connected to the plate pressing machine body; the cleaning component includes a fixing plate, connector a, and connector b; the fixing plate and the support member are connected and detachably connected, and connector a and connector b are connected to the fixing plate. This utility model avoids dents or impurities from being embedded on the surface of the pressed plate, conveniently improves the pressing quality of the plate, reduces the number of defective products in the pressing process, reduces the pressing cost, and conveniently improves the use structure of the plate pressing machine.

The utility model discloses a low -noise motorcycle engine cylinder cover belongs to cylinder cover technical field, it includes cylinder cover body, the inside wall of cylinder cover body is equipped with the noise reduction structure, the inside wall center place of cylinder cover body is equipped with cooling structure, the inside center upper place of cylinder cover body is equipped with support structure, the cooling structure includes cavity, the inside wall center place of cylinder cover body is equipped with the cavity, the inside center upper place of cavity is equipped with cooling pipe, in addition, the utility model discloses, can be targeted to attenuate valve knock, gas turbulence etc. high frequency noise, and the noise reduction amount reaches 10 15dB, solve the problem that high frequency noise penetrability is strong, simultaneously, absorb the vibration energy that cylinder body resonance and component low frequency impact produced, and the barrier efficiency improves 20 30%, solved the defect that low frequency noise suppression is insufficient, and, reduce gas leakage noise 8 12dB, also through the rigid vibration transmission of elastic contact reduction cylinder cover and cylinder, avoid resonance and produce additional noise.

The invention provides a semiconductor device and a preparation method thereof, and belongs to the technical field of semiconductors. The active region is positioned in the substrate and extends along a first direction; the gate structure is located on the surface of the substrate and crosses the active region along a second direction, and the second direction is orthogonal to the first direction; the trench isolation structure is located in the substrate and surrounds the active region, grooves are formed in the edges of the two sides, making contact with the active region, of the trench isolation structure, and the grooves are located below the gate structure; the groove is filled with the wide bandgap semiconductor material layer, the wide bandgap semiconductor material layer is in contact with the edge of the active region, the top of the wide bandgap semiconductor material layer is in contact with the bottom of the gate structure, and the bandgap width of the wide bandgap semiconductor material layer is larger than that of the substrate. The performance of the semiconductor device can be improved.

The application provides a chuck assembly and a measuring device. The chuck assembly comprises a chuck, a plurality of support columns for supporting a wafer are arranged on one side of the chuck facing the wafer, and a plurality of air nozzles capable of forming an air cushion are arranged on the side of the chuck. The plurality of support columns form a plurality of concentric support rings with the rotation center of the chuck as the center. The plurality of air nozzles form a plurality of concentric air nozzle rings with the rotation center as the center. At least one support ring is arranged between any two adjacent air nozzle rings. In the embodiment of the application, the chuck assembly can effectively improve the anti-interference ability, the test stability, and the measurement accuracy.

The utility model discloses an injection mold frame system for preparing a small multi-cavity thin-wall plastic part, which relates to the technical field of injection molds, and comprises a movable mold seat, a fixed mold seat matched with each other for use is arranged at the upper part of the movable mold seat, a plurality of thimbles are mounted in the middle of the movable mold seat through bolts, and adjusting mechanisms are arranged at the end parts of the plurality of thimbles. After the positioning rod at the bottom end of the connecting piece is embedded into the groove body, the threaded sleeve is rotated to drive the threaded piece to get close to the connecting piece and be tightly attached to the connecting piece, so that fixing of the ejector pin end assembly is completed, when replacement is needed, the threaded sleeve is rotated reversely to enable the threaded piece to be separated from the connecting piece, and the ejector pin end assembly is replaced. By means of the design, abrasion or shape adaptation adjustment of the end of the ejector pin does not need to be integrally disassembled, only the end of the ejector pin needs to be locally disassembled and assembled, the maintenance time is remarkably shortened, the ejector pin structure is particularly suitable for the scene that an ejection end structure needs to be frequently replaced in a multi-cavity mold, and the production efficiency is improved.

This utility model discloses an anti-collision plastic oil drum, belonging to the technical field of plastic oil drums. The utility model includes an outer drum and reinforcing members. An inner drum is located at the center of the outer drum, forming an annular cavity between the outer and inner drums. A honeycomb skeleton is fitted within the annular cavity; the honeycomb skeleton is a ring-shaped cylindrical hexagonal honeycomb array skeleton. Through the structural design of the outer drum, inner drum, and honeycomb skeleton, this utility model can effectively disperse and weaken the impact force on the plastic oil drum, effectively preventing the drum body from denting or cracking due to impact, thus solving the problem of plastic oil drums easily denting or cracking when subjected to impact.

This utility model belongs to the field of automotive parts manufacturing technology, specifically relating to a positioning clamp for an automotive fuel pipe. It includes a connecting column fixedly installed on the top left side of a base plate; an assembly pipe fixedly installed on the top right side of the connecting column, with a closed structure at the right end; four support mechanisms are arranged in a cross shape around the assembly pipe; each support mechanism includes several connecting pipes arranged laterally around the assembly pipe; each connecting pipe has a slidingly sealed push rod inside; an arc-shaped plate is fixedly installed at the end of each push rod away from the assembly pipe; the assembly pipe and the connecting pipes are filled with hydraulic oil; a push-pull mechanism is located on the top left side of the connecting column, with its telescopic end extending into the assembly pipe. This utility model has a simple and reasonable structure, employing an inside-out support method during use, avoiding the sagging of the fuel pipe periphery caused by traditional outside-in clamping, thus protecting the structural integrity of the fuel pipe.

This invention discloses a low-floor all-aluminum vehicle chassis, consisting of a front axle, a central battery compartment, and a rear axle module connected sequentially. The central section is low, while the sides are higher, with a height difference of 240–250 mm. The load-bearing frame of the central battery compartment connects the crossbeams and longitudinal beams via mortise and tenon joints, forming a grid-like inner frame and three battery compartments, upon which the floor is mounted. The front and rear axle modules are connected to the frame and crossbeams via mortise and tenon joints, supplemented by mechanical reinforcement. This invention employs a three-segment all-aluminum height-difference structure, achieving lightweight, high rigidity, and high battery capacity synergistically for a 6-meter-class Class I low-floor minibus. The grid-like inner frame formed by the central grid-like mortise and tenon joints enhances rigidity and optimizes force transmission, while also forming three battery compartments, increasing battery capacity from 71 kWh to 105 kWh, significantly extending range. The all-aluminum design reduces weight by over 1 / 3, lowering energy consumption. The modular design improves assembly precision and efficiency, overcoming the technical bottleneck of adapting all-aluminum structures to Class I low-floor designs, providing an accessible, low-carbon, and highly reliable microbus chassis solution.

This utility model discloses a novel hydraulic damper. Key technical features include a housing with an oil cavity inside. A rotating shaft is rotatably connected to the housing, extending into the oil cavity and symmetrically arranged with blades. Each blade has a notch. A flexible paddle covering the notch is positioned on one side of the blade. A limiting element is positioned on the side of the flexible paddle away from the notch. When the flexible paddle deforms away from the notch, an oil passage gap is formed between it and the notch, and it abuts against the limiting element. This utility model achieves dynamic adjustment of the damping force by allowing the flexible paddle to deform with changes in hydraulic oil pressure, adapting to different speeds and loads. Furthermore, by setting a limiting element to restrict its maximum bending angle, it avoids plastic damage or breakage due to excessive deformation, significantly extending the service life of the damper.

The invention relates to the technical field of polishing, transfer printing, labeling and code scanning machining equipment, and discloses integrated polishing, transfer printing, labeling and code scanning automatic machining equipment and a machining method.The integrated polishing, transfer printing, labeling and code scanning automatic machining equipment comprises a rack; a grinding assembly, a pad printing machine, a labeling assembly and a code scanning assembly are sequentially arranged at the top of the rack, the grinding assembly comprises a first fixing frame, the bottom of the first fixing frame is fixedly connected to the top of the rack, a first air cylinder is installed at the top of the first fixing frame, and the output end of the first air cylinder is fixedly connected with a first push rod. The bottom end of the first push rod is fixedly connected with a frame. According to the grinding and dust removing device, dust and chippings generated by grinding can be collected while grinding is conducted, synchronous operation of grinding and dust removing is achieved, the dust and chippings are effectively prevented from drifting away, the production operation environment is optimized, the body health of operators is protected, dust is prevented from being attached to the surfaces of workpieces, and the machining quality of follow-up transfer printing and labeling is guaranteed.

The present application relates to a kind of end point clamping mechanism and straightening device for correcting after aluminum alloy profile extrusion molding, belong to aluminum alloy profile processing equipment field.For the problem that existing inner expansion type clamping mechanism is easy to slip when traction straightening, the present application sets up split type anti-slip self-locking structure outside movable block: support block is connected with movable block by inclined surface sliding, and support block clamping surface is provided with anti-slip structure.Support block is abutted to profile inner wall after initial expansion;When traction force, the large friction force of support block and profile drives it to slide along inclined surface and further expands outward, and forms self-locking clamping that is more and more tight.Moreover, universal transmission joint can be arranged in driving shaft, so that clamping mechanism is self-adaptive to the direction of special-shaped end face.The present application realizes the self-locking mechanism that clamping force is strengthened with pulling force during traction, completely solves the problem of slipping, and can adapt to the change of end face orientation, applicable to the efficient straightening of multi-cavity thin-walled aluminum alloy profile.

This invention provides a sterile pipe-connecting machine, including a base plate with two slide rails mounted on it. A first clamping unit and a second clamping unit are mounted on the slide rails. A rotating unit is mounted on the first clamping unit. A thermal cutting unit, an outward expansion unit, and a clamping unit are mounted on the base plate. This invention uses a driving component C to drive a rotating rod to rotate, causing an arc-shaped pressure plate to rotate outward away from the pipe's flared end. This drives the first and second clamping units to move inward, bringing the flared ends of the two pipes into contact. Simultaneously, it drives the two unfolded arc-shaped pressure plates to move outward. Then, the driving component C drives the rotating rod to rotate, causing the arc-shaped pressure plates to rotate inward to a closed state. The inward movement of the two arc-shaped pressure plates compresses the flared ends of the two pipes, fusing them together to achieve the pipe-connecting process. The large contact area at the pipe connection point results in a good connection effect and high connection strength.

The utility model relates to the technical field of hydrogen storage material transfer, and discloses a solid hydrogen storage material transfer device which comprises a supporting bottom plate, a transfer damping fixing part and a transfer barrel protection clamping part, and a supporting cushion block is fixedly installed on the outer wall of the bottom of the supporting bottom plate. The combination of the buffer sliding barrel, the buffer sliding rod and the buffer spring plays a key role when the transfer device is impacted in the vertical direction, the impact force from the road surface can be absorbed and dispersed, and the vibration amplitude transmitted to the solid hydrogen storage material transfer barrel is effectively reduced; springs are matched with damping telescopic rods to further enhance the damping effect and control the buffering process, a vacuum adsorption system composed of a vacuum pump, a communicating block, a vacuum air pipe and a vacuum suction cup provides strong fixing force in the horizontal direction, the supporting bottom plate is tightly adsorbed to a bearing plane through atmospheric pressure, and therefore the supporting effect is improved. The horizontal sliding of the transfer device caused by the conditions of vehicle acceleration, deceleration, turning and the like in the transportation process can be effectively prevented.

The utility model relates to a wear-resistant and compression-resistant plastic track which comprises a base layer, a first buffer layer, a damping reinforcing layer, a second buffer layer and a wear-resistant layer are sequentially arranged above the base layer from bottom to top; a plurality of concave cushioning grooves are formed in the upper surface of the damping reinforcing layer; a plurality of shock transfer bumps protruding downwards are formed on the bottom surface of the second buffer layer, and the plurality of shock transfer bumps and the plurality of cushioning grooves are arranged in a one-to-one correspondence manner; the interior of the damping reinforcing layer is composed of a plurality of damping supporting bodies and hydrophobic filling bodies arranged among the damping supporting bodies in a filling mode. The damping support body is in a trapezoid shape with a narrow upper part and a wide lower part, and is arranged below the bottoms of the plurality of cushioning grooves; and hydrophobic pores are formed in the hydrophobic filling body. The runway disclosed by the utility model has the advantages of better shock absorption and capability of preventing the runway from sinking due to stress, and is better in movement comfort and longer in service life.