65 results about "Contact pressure" patented technology

This invention discloses a grinding and polishing equipment and method for automotive parts, relating to the field of automotive parts processing. It includes a frame, a rotating fixture, a polisher, and a pusher. The frame is equipped with a pressing mechanism, which includes a transmission frame slidably mounted on the frame. One end of the transmission frame has a rotatable transmission screw, and the other end has a rotatable transmission wheel. A downward-moving sleeve is threaded onto the bottom of the transmission screw. This invention solves the problem of radial wobbling and wobble of the gear shaft during high-speed rotation polishing by stably pressing the top of the gear shaft with a positioning seat. This ensures uniform contact pressure between the gear shaft and the polishing wheel, significantly improving polishing quality and finished product yield, and reducing abnormal wear between parts and the polishing wheel. Furthermore, by adjusting the screw and the transmission screw in a synchronized manner, the height of the positioning seat can be quickly and stably adjusted according to gear shafts of different lengths and specifications, adapting to the processing of various types and sizes of gear shafts. The adjustment process is simple and efficient, greatly improving the equipment's versatility and changeover speed.

To generate contact pressure while minimizing the increase in the number of parts. [Solution] The male tab-shaped first busbar connection portion 12 of the first busbar 10 has a plurality of ribs 13 that bulge out from one plane 12a and extend in a direction perpendicular to the direction in which the second busbar 110 is fitted into the U-shaped second busbar connection portion 112. The second busbar connection portion has a notched portion 113 that is cut along the U shape into which the first busbar connection portion is fitted, a U-shaped first contact portion 114 that contacts the other plane 12b of the first busbar connection portion when the assembly of the first terminal block 1 and the second terminal block 101 is completed, and a U-shaped second contact portion 115 that contacts the plurality of ribs of the first busbar connection portion when the assembly is completed.

The utility model discloses a system (500) for monitoring a plurality of draft units (100) of a fabric spinning machine (1), which includes hoses, monitoring units and a control system. The hoses (L1, L2, L3, L4, R1, R2, R3, R4) are configured to receive an inert fluid in order to maintain a desired contact pressure between the top roller (9) and the bottom roller (10). The monitoring units (31, 32, 33, 34, 35, 36, 37, 38) are mounted on each hose and comprise a sensor (13), an identification tag storing the position of each sensor and a microcontroller. The sensor continuously senses the pressure of the fluid and generates a signal in real time. The monitoring unit detects the faulty hose based on the comparison of the sensed signal with predetermined limits. The control system is in electronic communication with each monitoring unit to identify and locate the faulty hose and to stop the operation of the top arm assembly (11) corresponding to the faulty hose.

This utility model provides a VOCs emission reduction device for a fully liquid-contact internal floating roof storage tank, belonging to the field of emission reduction technology. It includes a tank body, with a sealing assembly fixedly installed inside the tank body. A floating assembly is slidably installed on the inner side of the sealing assembly, located below the sealing assembly. The sealing assembly includes a sealing pressure plate that fits snugly against the inner wall of the tank body. In this utility model, the sealing pressure plate is fixed to the edge of the floating assembly by bolts. A stainless steel spring plate is installed in an arc shape inside the pressure plate, continuously applying elastic force outwards to push the entire sealing pressure plate tightly against the tank wall. Under the action of the spring force, the sealing pressure plate always fits against the tank wall. When encountering welds or depressions in the tank wall, the stainless steel spring plate automatically increases the thrust, causing the rubber tongue to tightly fill the uneven areas. In straight sections, it maintains uniform contact pressure. The elasticity of the stainless steel spring plate ensures a full-circumference seal without dead angles.

The application discloses a pipeline inner wall cleaning robot and relates to the technical field of welding slag removing equipment.The pipeline inner wall cleaning robot comprises a hanging shaft, a removing assembly and an adjusting piece which are installed on the hanging shaft.Based on automatic operation, the pipeline inner wall cleaning robot can continuously and stably remove welding slag on the inner wall of a large steel cylinder according to a preset program, and the operation personnel do not need to repeatedly enter the steel cylinder, so that the operation time is greatly shortened.The polishing protrusions and the scraper which can be replaced are arranged, compared with the traditional rolling brush removing mode, the polishing protrusions and the scraper can effectively process welding slag with different forms and thicknesses.The elastic connecting structure which is composed of a supporting arm, an extending arm and a spring provides elastic contact for the scraper, the polishing protrusions, the rolling brush and the inner wall of the steel cylinder, damage caused by rigid connection to the inner wall of the steel cylinder is avoided, the contact pressure can be adaptively adjusted, the grinding amount is prevented from being too large, and the removing effect is improved.

The utility model relates to contact wire production technical field, concretely relates to a contact wire drawing production facility, including pay -off device, five mould giant drawing machine, straightening device and take -up, five mould giant drawing machine includes angle adjusting device between two adjacent moulds, angle adjusting device includes fixed base, adjusting pulley and lifting structure, lifting structure installs on fixed base, adjusting pulley rotates and installs on lifting structure, adjusting pulley is used for and contact wire rotary contact and pushes down contact wire, lifting structure is used for driving adjusting pulley to move up and down, through setting angle adjusting device between the adjacent mould of five mould giant drawing machine, can alleviate raw material line upper half portion plugging phenomenon, in addition raw material line downward inclination can reduce raw material line and mould upper half portion's contact pressure, thereby reduce raw material line upper half portion and mould's friction, alleviate the wear and tear to mould and reduce the frequency of polishing processing in unit time, improve contact wire's production efficiency.

This utility model relates to the field of micro switch technology and discloses a novel tension spring micro switch, including a base. A slot is provided in the middle of the base, which engages with the right side of a movable bracket. A movable contact component is located above the movable bracket and is connected to the upper part of the movable bracket via a tension spring. A sliding groove is provided on the upper left side of the base, through which a button that cooperates with the movable bracket is slidably connected. Normally closed and normally open contact components, respectively, are located on the upper and lower sides of the right end of the movable contact component and engage with the base. A support foot is provided at the bottom of the base, with one side of the support foot located inside the base and connected to the left side of the movable contact component. This utility model applies to a novel tension spring micro switch, using a tension spring to connect the movable bracket and the movable contact component. The fulcrum of the movable bracket is located on the right side of the base, significantly increasing the switch lever arm length and ensuring contact pressure at the switch contacts while achieving the light pressure requirement of the overall switch.

The utility model relates to the field of water conservancy project and environmental protection engineering, concretely relates to a suction dredging bucket, the suction dredging bucket takes the shell welded with high strength wear -resisting steel sheet as the main body, and the bottom opening is equipped with the arched grating bar of vault downwardly inclined, and the top suction mouth is connected with centrifugal pump. The internal reamer is driven by servo motor to cut the soil into suspension slurry, and the tail roller realizes free rotation. The roller of the application can make the suction dredging bucket pass over small uneven places more easily, reduce the blockage and severe impact load, and the friction mode with the ground is rolling friction, which can greatly reduce the friction and wear. At the same time, the roller can provide certain buoyancy, which can partially offset its own weight and the downward pressure applied by the equipment, reduce the contact pressure of the roller on the riverbed, further reduce the rolling resistance, and reduce the depth of the roller sinking into the soft mud, so that the roller can more smoothly fit the terrain and reduce the risk of blockage.

The application provides a kind of simulation design method of integral mud pump piston based on multi-physical field coupling, on the basis of completely retaining the original integral mud pump piston structure, coupling structure field, flow field and wear field for the first time, a complete simulation system including Ogden super-elastic constitutive model, sealing contact pressure model, Archard wear model and coupling control equation is established. Through finite element simulation, the minimum contact pressure, maximum wear depth, predicted service life and leakage rate and other key design indicators can be quantitatively output, and the rubber hardness, arc curvature radius and interference amount and other parameters can be iteratively optimized accordingly. This method can accurately simulate the sealing performance degradation and wear process of the piston under different working conditions in a virtual environment without repeated trial production of physical objects, significantly shortening the design cycle, improving the design quality and reliability of the piston, and having a clear mathematical model and reproducible calculation process, facilitating industry application.

The utility model relates to the technical field of sealing element discloses a kind of anti-drop rubber sealing ring, including rubber ring body, rubber ring body further includes lower sealing body, and multiple upper sealing bodies are fixedly connected on lower sealing body, and first installation cavity is opened in lower sealing body, and tensile spring is connected with being inserted in first installation cavity, and second installation cavity is opened in lower sealing body in the position above first installation cavity, and support is movably connected in second installation cavity. Annular tensile spring in first installation cavity, can apply restraint force towards center point to lower sealing body, greatly promote the contact pressure of lower sealing body and shaft workpiece, effectively avoid sealing ring deviation, fall off, solve the problem that traditional rubber ring is easy to drop, simultaneously, the support in second installation cavity, rely on annular center plate and arc support piece, continuously provide support expansion force to upper sealing body and lower sealing body, slow down the elastic loss caused by rubber aging.

This invention discloses an adaptive wear calculation method and system for heavy-duty sliding bearings. The method includes: reading input parameters (bearing properties, initial state, current wear parameters); initializing relevant variables (roughness, wear depth array, time step array); calculating combined roughness; calculating contact pressure; adaptively calculating the maximum sliding distance; adaptively calculating the maximum time step; calculating the real-time wear coefficient; calculating the current wear depth based on the Archard model; determining whether the maximum wear depth or time step is greater than the planned depth or time step; determining the final wear depth, film thickness, contact pressure, temperature, and roughness; and outputting the results. The system includes a reading module, an initialization module, a calculation module, a judgment module, an update module, and an output module. This invention has the advantages of simplicity and efficiency, eliminating tedious calculation steps and making it more efficient.

The application belongs to the technical field of bearing structure design and vibration control of ship propulsion system, and discloses an isobaric expansion stern bearing based on a negative Poisson's ratio topological inner lining structure, wherein the negative Poisson's ratio topological layer is composed of geometric topological units and produces tangential expansion deformation under the action of a radial load. Through the negative Poisson's ratio effect, the radial compression load of the shaft system is converted into a circumferential expansion response, the isobaric expansion of the shaft-lining contact area is realized, the effective bearing area is increased, and the contact pressure distribution is homogenized. The topological inner lining is divided into a head end topological region, a transition region, a middle topological region, a transition region and a stern end topological region in the axial direction, and the geometric parameters of the topological units, the equivalent Poisson's ratio and the thickness of the negative Poisson's ratio topological layer are adjusted in each region to adapt to the non-uniform distribution of shaft bending, partial load and lubrication state under low-speed heavy-load conditions. The application can significantly reduce edge high pressure and local wear, improve water film stability, and improve the carrying capacity, vibration reduction and noise reduction performance and service life of the stern bearing.

The utility model provides a kind of atomizing pipe and base fixed structure, including base, main cylinder, upper sleeve, the top of the base is fixedly connected with main cylinder, the main cylinder is used to contain liquid, the top of the main cylinder is fixedly connected with upper sleeve, the top of the main cylinder is fixedly connected with atomizing pipe, the bottom of the atomizing pipe is fixedly connected with connector. The utility model has the advantages that the fixed structure realizes dynamic sealing compensation: the elastic deformation of outer ring can compensate 0.1mm assembly error, and the contact pressure is stable when temperature changes. Anti-loosening protection: the friction damping effect of fastening ring improves the stability of threaded connection by 40%, especially suitable for electronic cigarette environment with high-frequency vibration. The structure realizes high-reliability fixation of electronic cigarette atomizer core component through the mechanical optimization layout of atomizing pipe, sub connector, bridge, tight head, and the composite sealing scheme of outer ring and fastening ring, greatly reduces leakage rate, and greatly prolongs service life.

The embodiment of the present specification provides an elastic component applied to a carrier for transporting wafers, comprising: an inlay part for being inlaid in a mounting groove of the carrier; and a supporting part for supporting the wafer, the supporting part being fixedly connected with the inlay part, a side of the supporting part facing the wafer being provided in a planar shape, and a side of the supporting part facing the mounting groove being protruded out of the inlay part so that the supporting part is supported on a surface of the carrier. The elastic component contains a wafer supporting surface with a larger area, which can reduce wafer damage caused by changes in contact pressure and is less likely to slide sideways. The side of the supporting part facing the mounting groove is protruded out of the inlay part, which can inhibit torsion of the elastic component itself in the mounting groove and improve the stability of transportation. Using the above-mentioned elastic component, lossless transportation of wafer products can be achieved, and transportation efficiency can be improved.

The application discloses a composite material hot-press forming die and a stress release control method thereof. The die is mainly provided with a lateral constraint mechanism on at least one side of a cavity. The lateral constraint mechanism comprises a lateral slider capable of moving laterally and reciprocally, and the lateral slider constitutes a side wall of the cavity. The control method comprises the following steps: before entering the cooling stage of the die, reading a contact pressure, setting the pressure value as a constant-pressure following target value, and setting an allowable fluctuation range; and actively releasing residual stress by allowing the controller to drive the lateral slider to perform multiple retreat actions, so as to always maintain the contact pressure in the allowable fluctuation range of the constant-pressure following target value, and realize a stress-free accumulation state of the composite material component product in the cooling process. Therefore, the product deformation can be effectively reduced, and the product quality can be ensured.

The present invention provides a connector that can suppress variations in the contact pressure of each spring segment. [Solution] The main body 31 of the terminal 11 comprises a cylindrical base 32 centered on the central axis L1 of the main body 31 along the first direction D1, and a plurality of spring pieces 33 extending from the base 32. Each of the plurality of spring pieces 33 is arc-shaped centered on the central axis L1 and is arranged in parallel with spacing between them along the circumferential direction centered on the central axis L1. Each of the plurality of spring pieces 33 comprises a base end 41 connected to the base 32, a reduced diameter portion 42 extending from the base end 41 toward the central axis L1 toward the first direction D1, and a contact portion 43 provided at the tip of the reduced diameter portion 42 toward the first direction D1 and in contact with the mating terminal T. The reduced diameter portion 42 of each of the plurality of spring pieces 33 comprises an outer peripheral projection 44 that protrudes radially outward from the outer peripheral surface of the reduced diameter portion 42 between the base end 41 and the contact portion 43 and abuts against the inner surface of the cavity 23.

This application belongs to the field of welding equipment and discloses an argon arc welding device and method for complex sheet metal parts. The device includes a base, a welding guide rail, a support assembly, a welding assembly, and a welding control assembly. One end of the welding guide rail is connected to the base, and the top is supported by the support assembly mounted on the base. The welding assembly includes a sliding seat, a drive assembly, a welding head, and two lateral force detection heads. The sliding seat is slidably fitted onto the welding guide rail, and the guide rail guides the sliding seat along the seam to be welded. The welding head is mounted on the sliding seat for welding. The two lateral force detection heads are located on both sides of the welding head, with their ends abutting against the workpiece surfaces on both sides of the seam to be welded, and can detect the corresponding contact pressure. The welding head and the drive assembly are electrically connected to the welding control assembly. The control assembly uses the pressure difference between the two lateral force detection heads as the surface tracking deviation value. When this value is greater than or equal to a preset threshold, the drive assembly stops moving, and the welding head stops welding, which can improve the welding efficiency of complex sheet metal parts.

This utility model discloses a contactor contact mechanism, relating to the field of contactor technology. It includes a base, with a mounting seat fixedly connected to the top of the base. A rotating shaft is rotatably mounted on the mounting seat, and a gear is fixedly fitted onto the rotating shaft. Two fixed seats are fixedly connected to both sides of the mounting seat, and the interior of each fixed seat has a T-shaped through slot. A contact assembly includes movable columns and two bases. The two movable columns movably pass through the through slots inside the two sets of fixed seats. A transmission plate is provided on one side of the front of each movable column, passing through the through slot. Multiple transmission teeth are provided on the opposite sides of the two transmission plates. This utility model effectively avoids localized overheating, material softening, and even adhesion of the contacts, and is less prone to uneven contact pressure distribution due to angular deviations or mechanical vibrations. It significantly improves the overall service life and safety of the contact mechanism, and has high practicality.

This utility model discloses a cooling device for the production of large-diameter thick-walled seamless steel pipes. This utility model relates to the field of seamless steel pipe production technology. The utility model includes: a housing, with a fixing device rotatably connected to the outer wall of the housing. The fixing device fixes the workpiece by rotation. By setting up the fixing device, the rotational connection between the rotating frame and the sliding frame, combined with the circumferentially arrayed sliding frame structure, allows for flexible adjustment of the clamping range according to the outer diameter of the large-diameter thick-walled steel pipe. The sliding and rotating cooperation between the passive rod and the rotating wheel allows for adaptive contact with the outer wall of the steel pipe through contact pressure when it is placed. Combined with the thread adjustment of the unidirectional screw, this ensures stable fixing of the steel pipe during cooling and also drives the steel pipe to rotate synchronously through the overall rotation of the rotating frame, eliminating the problem of blind spots in the cooling of support points in traditional fixing methods, thus laying the foundation for uniform cooling.

The application discloses a tapered roller bearing entity simulation method and device, equipment and medium, and relates to the technical field of wind power generation. According to the scheme, a TRB entity model is constructed, and a frictional contact is set between a large-end spherical base surface of a tapered roller and a large flange of an inner ring, so that the contact pressure of the large flange and the roller posture are truly reflected. The central region of the large-end spherical base surface is connected to the corresponding position of the large flange of the inner ring only through a spring unit, and the included angle between the axis of the spring unit and the vertical central section of the tapered roller is less than a preset threshold value, so that the constraint direction is concentrated on the local limiting direction of the spherical base surface and the large flange, and the non-physical rigid body drift in the frictional contact establishment process is inhibited. The spring counterforce is less than the contact force of the corresponding tapered roller, and the spring unit is not connected to the outer ring of the bearing, so that it is only used for numerical stability and does not participate in the main load transmission, and does not interfere with the main bearing contact between the roller and the raceway, so that the convergence stability of the finite element calculation is significantly improved while the contact authenticity is ensured.

The application provides a kind of detection method and device for high-temperature compression resistance of asbestic-free composite material sealing gasket.The detection method is executed using the detection device, and the detection method comprises the following steps: preheating the pressing plate assembly;obtain the system elastic deformation of the device under different pressure loads as background compensation data;load the sealing gasket to be tested, when the initial contact pressure is monitored by the pressure sensor, mark the reading of the displacement sensor as zero or initial thickness;apply a step-by-step increasing pressure load to the sealing gasket to be tested, and hold pressure at each pressure level;monitor the pressure value fed back by the pressure sensor in real time;when the sealing gasket to be tested creeps and causes the pressure value to drop, the control driving part automatically executes the feeding action to compensate for the pressure loss until the pressure value returns to the target set value;real-time collection of total displacement data detected by the displacement sensor, and calculation of the actual thickness change of the sealing gasket to be tested during the stress process based on the background compensation data.

This invention relates to a method for anti-scratch roll forming of strip-shaped fasteners, belonging to the field of metal sheet processing technology. It solves the fundamental setting problem caused by raw material thickness tolerance by determining the reference forming gap G0 through inlet thickness measurement. Furthermore, the roll forming process is divided into three forming areas and three roll forming units: pre-bending, main body sidewall or flanging, and final forming of the fastening structure. To address the differences in contact pressure and friction slip conditions caused by work hardening, springback, and equivalent thickness changes at each stage, compensation is introduced to establish a correlated gap adjustment relationship. This allows the same section of sheet material to be formed under more matched roll gap conditions at different stages. Without blindly increasing the overall gap, it reduces surface scratches or abrasions caused by excessive local compression and relative slippage, maintaining stable bending angles and fastening structure dimensions. Essentially, it resolves the contradiction of simultaneously achieving both surface quality and forming accuracy.

This invention discloses a micro-geometry design method for cam rollers that integrates the full-cycle alternating characteristics of an internal curve hydraulic motor. First, a thermo-elasto-hydrodynamic lubrication model is established, incorporating micro-surface morphology and considering the full-cycle alternating characteristics of the cam roller-cam ring contact pair. These alternating characteristics include alternating entrainment velocity, alternating external load, and alternating equivalent radius of curvature. Second, based on a three-segment micro-geometry design equation, sensitivity and independence analyses are used to determine the roller convexity, micro-geometry design length, and fillet length as the core design variables. Furthermore, a comprehensive optimization objective function is constructed that simultaneously considers robustness under multiple operating conditions and machining accuracy constraints. Finally, a multi-strategy adaptive optimization algorithm is used to iteratively optimize the above variables, obtaining a cam roller micro-geometry profile that significantly homogenizes contact pressure, improves oil film thickness distribution uniformity, and enhances load-bearing capacity. The cam rollers designed using this method can effectively improve lubrication under high pressure and extend the service life of the hydraulic motor.

The application is a three power source transfer switch contact assembly, which comprises a base, a cover, a first power source static contact, a second power source static contact, a third power source static contact, a load static contact and a moving contact assembly. The moving contact assembly can rotate 360 degrees clockwise and counterclockwise between the base and the cover. When the moving contact assembly rotates, there are six positions, three of which have static contacts and moving contacts in contact, corresponding to three closed positions, and three of which have no static contacts, corresponding to three open positions. The moving contact assembly is based on a rotating shaft and a moving contact shell, and two moving contacts are installed on the moving contact shell. The two moving contacts are sleeved on the moving contact shell through a spring frame, and a main spring is arranged in the middle to provide contact pressure.

The utility model relates to the technical field of engineering machinery discloses a kind of shovel and engineering machinery.The shovel includes main blade plate and multiple bucket teeth, main blade plate has the mounting surface for installing bucket tooth, mounting surface is set as middle high both sides low along the length direction of main blade plate;Multiple bucket teeth are perpendicularly installed to mounting surface along the length direction of mounting surface with mutual spacing.The mounting surface of main blade plate is middle high both sides low, increase the length of mounting surface, when multiple bucket teeth are perpendicular to mounting surface, it can increase the spacing between two adjacent bucket teeth, and further increase the installation and disassembly space of bucket tooth, improve the replacement efficiency of bucket tooth and the operation efficiency of shovel;Multiple bucket teeth are located at different positions of mounting surface, since mounting surface is middle high both sides low, the bucket tooth in middle is contacted with working surface earlier than the bucket tooth on both sides, reduce the initial contact area of shovel and working surface, increase the contact pressure of working surface, thereby improve the cutting ability of shovel.

The present application belongs to the technical field of polishing robots, and particularly relates to a self-adaptive sand belt polishing robot for cylindrical tanks and a polishing method. The sand belt polishing robot comprises a moving base, a coarse adjustment mechanism fixedly arranged on the moving base, a fine adjustment mechanism installed at the output end of the coarse adjustment mechanism, and a polishing execution mechanism installed at the output end of the fine adjustment mechanism; when polishing, the polishing sand belt located between the second polishing pulley and the third polishing pulley is self-adaptively attached to and pressed against the outer surface of the cylindrical tank to be polished under the action of the elastic hinged assembly and the spring mechanism. When the polishing sand belt contacts the tank arc surface, the elastic hinged assembly passively adjusts the distance between the second polishing pulley and the third polishing pulley according to the curvature variation of the tank surface, so that the polishing sand belt located between the second polishing pulley and the third polishing pulley is always attached to the outer surface of the tank with constant contact pressure, thereby overcoming the defects of uneven force and unstable angle in manual polishing.