26results about How to "Prevent permanent deformation" patented technology

The invention relates to the field of expansion joints, in particular to a synchronous adjusting type expansion joint which comprises an expansion joint piece, the expansion joint piece comprises a corrugated pipe, connecting rings are fixedly connected to the two ends of the corrugated pipe, a middle ring and an outlet end are fixedly connected to the ends, away from the corrugated pipe, of the connecting rings correspondingly, and an elastic pipe film is arranged on the inner side of the corrugated pipe; the two ends of the elastic pipe film are fixedly connected with the middle ring and the outlet end correspondingly, a lining pipe is arranged on the inner side of the elastic pipe film, the end, away from the connecting ring, of the middle ring is fixedly connected with a connecting section, and the end, away from the middle ring, of the connecting section is fixedly connected with the inlet end. The connecting section is connected with the outlet part of the steam generation kettle, so that overlarge pressure at the outlet part of the steam generation kettle due to pipe diameter change is avoided, and meanwhile, the lining pipe is prolonged, so that the welding part of the lining pipe is positioned in the middle of the connecting section, and additional impact on the sealing part of the connecting flange caused by turbulent flow and pressure difference at the position is avoided.

The utility model discloses a wear-resistant component of a shock-absorbing plunger pump, which comprises a shock-absorbing wear-resistant block made of high-wear-resistant hydrogenated nitrile rubber, and a first matching surface is arranged on the upper wall of the shock-absorbing wear-resistant block. By adopting the composite structure of the hydrogenated butadiene-acrylonitrile rubber and the three-dimensional net-shaped alloy framework, the fatigue resistance and the impact resistance of the rubber matrix are remarkably improved, the problem that a traditional rubber material is prone to cracking under high-frequency impact is fundamentally solved, the overall service life of the valve assembly is prolonged, and the service life of the valve assembly is prolonged. By optimizing a matching surface structure and introducing a multi-stage buffer mechanism, concentrated impact force generated when the valve seat is closed is effectively dispersed, the problems of breakage of the connecting rod and permanent deformation of the rubber block caused by stress concentration are avoided, and the operation stability of the valve assembly under the high-frequency working condition is improved.

The utility model relates to the technical fields of wheel, disclose a kind of baby carriage wheel, including axle, the outer surface of axle is fixedly installed with walking mechanism;The inner surface of walking mechanism includes mounting disc, and the outer surface of mounting disc is fixedly connected with the outer surface of axle, the outer surface of mounting disc is fixedly installed with support frame, and the outer surface of support frame is fixedly installed with reinforcing frame.The baby carriage wheel, by axle first transmission to two sides symmetrical distribution's mounting disc of stepped convex round spoke shape.This structure utilizes its stepped flange to effectively disperse and reduce the stress concentration of junction place.Subsequently, load is mainly transmitted by multiple outwardly convex triangular solid support frame;The inherent geometric stability of the triangular structure is fully utilized, and the radial load is efficiently converted into compressive stress and tensile stress in the support frame, and the force is transmitted to the vertical rim with very high structural efficiency.The straight rim avoids the lateral component force generated by the inner inclined structure.

The application discloses a no-bending moment multi-hoisting point static-to-dynamic hoisting method and system, and belongs to the technical field of large structure hoisting. The method combines static mechanical planning before hoisting with dynamic closed-loop control during hoisting. Firstly, the hoisting points are calculated and adjusted to initial optimal positions according to module parameters. After hoisting, the force of each hoisting point and the module posture are monitored in real time, and the crane action and the hoisting point position are dynamically adjusted through a cooperative control system to realize force balance and posture correction, and finally the module is shifted, turned over and precisely positioned. The system comprises a servo-controlled crane, an adaptive sling with an adjustable hoisting point unit, a real-time monitoring system and a multi-hoisting point cooperative control system. The application actively suppresses the bending moment of the module during the whole hoisting process, and significantly improves the operation safety, precision and automation level.

This utility model relates to a connecting wire for electronic products, comprising, from the inside out, a conductor, an insulation layer, a shielding layer, a reinforcing layer, and a sheath. The shielding layer consists of an inner shielding layer and an outer shielding layer. The inner shielding layer is a conductive metal foil layer wrapped around the wire, and the outer shielding layer is a woven tin-plated metal mesh layer. The conductive surface of the inner shielding layer is tightly attached to the outer surface of the insulation layer. The reinforcing layer is composed of multiple strands of synthetic fiber bundles and a braided layer tightly wrapped around the synthetic fiber bundles. The synthetic fiber bundles extend along the axial direction of the wire and are evenly distributed around the periphery of the shielding layer. The braided reinforcing layer is made of flexible fiber material cross-woven together, achieving effective complementarity of high and low frequency electromagnetic shielding, greatly improving the tensile strength of the wire, preventing breakage due to pulling during wiring or daily use, and giving the wire excellent anti-torsion, anti-compression, and anti-impact properties.

The utility model provides an angle steel guide material pressing unit, it aims at solving the problem of unstable clamping and low positioning accuracy of angle steel workpiece with deviation in geometric shape. The device comprises a guide material supporting mechanism and a material pressing mechanism, the guide material supporting mechanism comprises a material supporting element for contacting the lower side of the angle steel flange and a material supporting universal hinge mechanism connecting the material supporting element and a material supporting driving element; the material pressing mechanism comprises a material pressing element for contacting the upper side of the angle steel flange and a material pressing universal hinge mechanism connecting the material pressing element and a material pressing driving element, the material supporting universal hinge mechanism and the material pressing universal hinge mechanism both allow the respective contact elements to swing in multiple degrees of freedom, thereby being able to adaptively fit the angle steel flange profile with deviations in shape such as distortion and bending. Through the adaptive fitting in the upward and downward directions, stable and reliable clamping of irregular angle steel workpieces is realized, thereby ensuring the stability of the subsequent angle steel machining accuracy.

The invention relates to the technical field of knitted fabrics, and provides an antibacterial and anti-wrinkle knitted fabric and a production process thereof.The antibacterial and anti-wrinkle knitted fabric is woven into an antibacterial layer through a circular knitting machine by adopting mixed spinning threads formed by turning bamboo fibers and polyester fibers, and an elastic layer made of polyurethane fibers is further bonded to one side of the antibacterial layer. According to the technical scheme, the antibacterial activity and the anti-wrinkle performance of the knitted fabric are improved.

The utility model discloses a lithium battery material stirring structure capable of improving the stirring efficiency, which comprises a reaction tank body, a reaction stirring shaft is arranged in the reaction tank body, the reaction stirring shaft is hollow, a reversing pipe is inserted into the bottom of the reaction stirring shaft, a sealing piece is rotatably arranged between the reversing pipe and the reaction stirring shaft, and the sealing piece is connected with the reaction stirring shaft. A lifting structure is arranged at the bottom of the reversing pipe, a plurality of stirring handles are arranged on the reaction stirring shaft, the one-way circulation assembly comprises a plurality of liquid outlet holes formed in the stirring handles, and a closed structure capable of sliding in the stirring handles is arranged on the sides, close to the stirring handles, of the liquid outlet holes; the closed structure moves towards one side of the reaction stirring shaft when the air pump generates negative pressure, and moves towards one side far away from the reaction stirring shaft when the air pump generates positive pressure, so that thick slurry flowing back from the concentration tank can be uniformly distributed to other positions of the reaction tank, and the stirring efficiency of the stirring structure is improved.

The utility model relates to battery technology field, concretely relates to electric core cover plate subassembly, electric core and battery package. Electric core cover plate subassembly includes cover plate body, pole, first sealing washer and second sealing washer. Pole includes pole column body and pole bottom plate, along the length direction of cover plate body, pole column body is eccentric arrangement on pole bottom plate, pole column body is insulated with cover plate body, the surface of pole bottom plate is equipped with the annular sealing groove around pole column body to cover plate body, first sealing washer is set up on pole column body, second sealing washer is located in sealing groove and is sealed between cover plate body and pole bottom plate by compression, and the compression rate of second sealing washer satisfies preset condition. The utility model discloses through sealing groove and double sealing washer design, effectively solved the problem of poor sealing of eccentric pole because of the bottom plate warping, avoids the electrochemical corrosion or insulation aging between pole and cover plate body, reduces the short circuit risk.

The utility model discloses a terminal tray structure capable of preventing terminal deformation. The terminal tray structure comprises a leaf disc, a first disc hub, an inner ring piece and a tendon bar, the first disc hub is coaxially arranged on one side of the blade disc; the inner ring piece is arranged on the blade disc and located on the periphery of the first disc hub, and the outer side of the inner ring piece and the blade disc jointly define a containing space. The tendon latch is mounted on the first disk hub to enter or leave the slot. An inner ring piece is arranged on a blade disc and located on the periphery of a first disc hub, the inner ring piece is provided with an empty groove, the inner ring piece is matched with a tendon bar to be installed on the first disc hub in the mode that the tendon bar can enter or leave the empty groove, the tendon bar extends into the empty groove during material receiving, and the tendon bar leaves the empty groove after material receiving is completed; the existence of the empty groove can provide a stretching space for slight deformation caused by thermal expansion and cold contraction of the terminals, so that mutual extrusion and distortion between the terminals are effectively prevented, a large amount of deformation internal stress left on the terminals is avoided, and permanent deformation caused by mutual extrusion of the terminals is effectively prevented.

The utility model discloses a reaction tank with a good reaction effect. The reaction tank comprises a reaction tank body and a reaction stirring shaft, the inner guide assembly and the reaction stirring shaft are hollow, a rotating joint is arranged on the reaction stirring shaft, the rotating joint is connected to an air pump arranged at the top of the reaction tank body, the inner guide assembly comprises a reversing pipe connected with the thick slurry conveying pipe, and the tail end of the reversing pipe is inserted into the bottom of the reaction stirring shaft; a sealing piece is rotationally mounted between the reversing pipe and the reaction stirring shaft; a plurality of stirring handles are arranged on the reaction stirring shaft, the one-way circulation assembly comprises a plurality of liquid outlet holes formed in the stirring handles, a closed structure capable of sliding in the stirring handles is arranged on one side, close to the stirring handles, of each liquid outlet hole, and the sphericity degree of a product can be further improved.

This utility model relates to the field of automotive pulley technology, specifically to an automotive shock-absorbing pulley, comprising: an inner hub ring for fixed connection to a rotating shaft; an outer wheel ring coaxially surrounding the inner hub ring for connection to a drive belt; an elastic damping ring formed and fixed within an annular cavity between the inner hub and the outer wheel ring, allowing the inner hub ring and the outer wheel ring to be elastically coupled through the elastic damping ring; and a centrifugal adjusting sleeve evenly arranged around the middle of the inner side of the outer wheel ring. This utility model decouples high-torque and high-damping conditions, assigning these responsibilities to different structural components. The rigid connection structure ensures reliability during startup, preventing fatigue aging, tearing, or permanent deformation of the elastomer due to repeated exposure to extreme torque. It also enables automatic adjustment of the transmission path via centrifugal force to adapt to the operating requirements of the engine at different speeds.

An apparatus (100) for refrigeration and / or deep-freezing, comprising a housing (18) and a refrigeration system (19), the refrigeration system (19) comprising a compressor (1) with substantially horizontally acting pistons and at least two mounting legs (2), a vibration damper (4) being arranged between the respective mounting leg (2) of the compressor and a base (3), the vibration damper (4) comprising: an elastic member (5) configured as a flat tubular member (7) and having a bottom side (8), a top side (9) and lateral sides (11, 12) extending parallel to a longitudinal axis of the tubular elastic member (5) and connecting the bottom side (8) and the top side (9); a mounting part (6) being arranged centrally on the top side (9) of the elastic member and being a material-locked integral member therewith, wherein, during operation of the apparatus (100), the longitudinal axis of the flat tubular element (7) is perpendicular to the horizontal direction of the operating pistons of the compressor (1).

This invention provides a seismic-resistant cable tray hanger, relating to the field of cable tray hangers, including an anchoring mechanism fixed to a building, a load-bearing mechanism for supporting the cable tray, a variable damping energy dissipation component, an anti-sway mechanism, and an indicating mechanism. The variable damping energy dissipation component includes a cylinder and a piston rod. The cylinder is connected to the anchoring mechanism and has an internal chamber. The lower end of the piston rod is connected to the load-bearing mechanism, and the upper end extends movably into the chamber. The anti-sway mechanism is located on the side of the load-bearing mechanism and connected to the anchoring mechanism, including a strut and a cable strap. One end of the strut is hinged to the anchoring mechanism, and the other end is connected to the side of the load-bearing mechanism via the cable strap. The indicating mechanism includes a ruler and a pointer. This invention achieves adaptive energy dissipation and automatic reset through the variable damping energy dissipation component, suppresses swaying and provides adjustable flexible constraints, the indicating mechanism visually monitors displacement, and the load-bearing mechanism strengthens the structure and prevents cable tray slippage, thus improving overall seismic reliability and ease of maintenance.

The invention belongs to the technical field of polyolefin preparation, and discloses a modified polyolefin elastomer and a preparation method thereof, and the modified polyolefin elastomer comprises the following components: ethylene, alpha-olefin, a main catalyst, a cocatalyst, a chemical cross-linking agent and a biodegradable additive. The preparation method comprises the following steps: uniformly mixing ethylene, alpha-olefin, a main catalyst, a cocatalyst, a chemical cross-linking agent and a biodegradable additive according to the proportion, transferring the mixed raw materials into a polymerization reaction kettle, and carrying out polymerization reaction at proper temperature and pressure. After the ethylene, the alpha-olefin, the main catalyst, the cocatalyst, the chemical cross-linking agent and the biodegradable additive are proportioned according to corresponding numerical values, the elasticity, the heat resistance and the solvent resistance of the modified polyolefin elastomer can be improved, and the permanent deformation of the material in the use process is avoided; the performance of the polyolefin elastomer is prevented from being reduced in a high-temperature environment, the resistance of the modified polyolefin elastomer to an organic solvent is enhanced, and the risk of swelling or dissolving is reduced.

This utility model relates to the field of automotive parts technology, and more particularly to an internal water-blocking structure. The internal water-blocking structure includes an internal water-blocking component and several brackets. The internal water-blocking component includes a frame and several lips, which are spaced apart along the width direction of the frame. The frame has several mounting grooves spaced apart along its length direction, and each mounting groove corresponds to one of the brackets. The brackets can be inserted into the mounting grooves, and the outer surface of the brackets abuts against the inner surface of the mounting grooves. Compared to existing technologies, this internal water-blocking structure, by providing brackets that correspond one-to-one with the mounting grooves, improves the strength of the frame at the mounting grooves. This prevents permanent deformation of the internal water-blocking component during transportation and installation, improves the sealing between the internal water-blocking component and the window sheet metal, and prevents window leakage.

The utility model provides an elastic insulation and heat insulation composite board. The elastic insulation and heat insulation composite board comprises a first foam layer, a first bonding layer, a vacuum nanometer heat insulation board layer, a second bonding layer and a second foam layer which are sequentially arranged in a stacked mode. The elastic insulation and heat insulation composite board has excellent compression resilience, heat insulation, high temperature resistance and high temperature insulation performance, and can effectively avoid the problem of permanent deformation caused by long-time extrusion in the use process; and the preparation method is simple in process flow and low in cost, and has a good industrial application prospect.

The invention belongs to the technical field of connectors, and particularly relates to a contact element capable of realizing high-current transmission, a connector and a connector assembly, a plurality of jack petals are formed on a plug-in part of the contact element, and the outer side wall of each jack petal is provided with an inclined surface bulge which can abut against the inner wall of a plug-in cavity of the connector so as to enable the jack petals to apply radial pressure to the adaptive contact element. The contact element is arranged on the connector, and the connector is inserted into the adaptive connector, so that the contact element is inserted into the adaptive contact element. The jack petals of the contact member are provided with the inclined plane projections, and after the contact member and the adaptive contact member are plugged in place, the contact member continues to move in the plugging cavity of the connector and abuts against the inner wall of the plugging cavity, so that the contact member compresses the adaptive contact member, the contact resistance is reduced, and the contact performance is improved. As the inner wall of the insertion cavity tightly presses the jack petals only after the contact element and the adaptive contact element are inserted, abrasion caused by overlarge pressure between the contact element and the adaptive contact element is avoided, abrasion is avoided after the connector is repeatedly inserted and pulled, and contact resistance can be reduced.

The present invention belongs to the field of tire technology. In view of the problems of poor shock absorption performance and high noise in existing airless tires, the present invention provides a bionic airless tire, which includes a tread, a connecting layer, a bionic buffer structure and a mounting body from the outside to the inside, wherein the bionic buffer structure includes a Z-shaped buffer plate imitating the hind limbs of a feline, a honeycomb elastomer, a first outer ring and a first inner ring, and the area between the Z-shaped buffer plate, the first outer ring and the first inner ring is filled with a honeycomb elastomer, and the holes of the honeycomb elastomer gradually increase from small to large from the first inner ring to the first outer ring. Through the Z-shaped buffer structure and the diamond honeycomb structure, the tire can effectively buffer both large vibrations and small vibrations, break the wind noise frequency, reduce the wind noise of the airless tire, and avoid the problem of permanent deformation of the single structure itself due to insufficient strength.

The invention discloses an interactive electronic blackboard and teaching all-in-one machine, and relates to the technical field of electronic blackboards, the interactive electronic blackboard and teaching all-in-one machine comprises a frame body, two fixed blackboards are arranged on the surface of one side of the frame body, an electronic whiteboard and a cleaning mechanism are arranged between the two fixed blackboards, and the cleaning mechanism is composed of a wiping assembly and a dust removal assembly; the two mounting plates are fixedly mounted on the two sides of the center of the interior of the frame body, a limiting bin and a cleaning bin which are matched with the cleaning roller are arranged on the upper surface and the lower surface of the electronic whiteboard correspondingly, the dust removal assembly comprises an air outlet box, the air outlet box is fixedly mounted on the upper surface of the frame body, and a dust suction box and a pressing prevention mechanism are further fixedly mounted on the bottom surface of the frame body; the anti-pressing mechanism comprises a pen storage box, a point touch pen is placed in the pen storage box, and in the scheme, the cleaning mechanism and the anti-pressing mechanism are arranged, so that the situation that the projection effect and the touch precision are affected by scratches and blurring phenomena generated after long-time use is avoided.

The invention relates to the technical field of plate machining, and discloses an assembly type building production plate cutting machine which comprises a machining base, a supporting frame and a hydraulic cylinder, the supporting frame is fixedly connected to the outer wall of the machining base, the hydraulic cylinder is slidably connected to the interior of the supporting frame, and a fixing plate is fixedly connected to the bottom end of a telescopic shaft of the hydraulic cylinder; a driving motor is fixedly connected to the upper surface of the fixing plate, an output shaft of the driving motor is fixedly connected with a mounting head, and a cutting rod is mounted in the mounting head; through cooperation of an overload protection assembly, the situation that the cutting rod is broken and damaged due to pressure overload can be avoided, due to the fact that the positions of a second micro electric gas rod and a second connecting plate are both in a fixed state, when a stop control button triggers a driving motor to be closed, teeth of the second connecting plate achieve the blocking effect on a fluted disc, and the cutting efficiency is improved. Therefore, the mounting head and the cutting rod can quickly stop moving, the risk that the cutting rod is damaged and broken is reduced, and effective overload protection is provided for the cutting rod.

The invention belongs to the technical field of medical materials, and relates to an artificial ligament which is of a round bar structure, the round bar structure forms a first bone tunnel weaving part, an intra-articular free silk part and a second bone tunnel weaving part which are sequentially connected in the axial direction, the round bar structure comprises warp and weft, the warp extends in the axial direction of the round bar structure, and the weft extends in the axial direction of the round bar structure. The warp yarns extend in the circumferential direction of the round bar structure, the weft yarns extend in the circumferential direction of the round bar structure, the first bone tunnel weaving part and the second bone tunnel weaving part both comprise the warp yarns and the weft yarns, and the intra-joint free silk part only comprises the warp yarns; the first bone tunnel weaving part and the second bone tunnel weaving part are provided with penetrating channels perpendicular to the axial direction, the warp yarns are divided into two types, namely sewing threads and multifilaments, and the channels are communicated through through holes formed by breaking the multifilaments. The artificial ligament has mechanical uniformity, flexibility and biocompatibility, is easy to process, and can resist fatigue and stabilize joints under physiological load.

The invention belongs to the technical field of elastic fiber materials, and discloses a high-modulus high-resilience composite latex thread and a preparation method thereof.The high-modulus high-resilience composite latex thread comprises natural latex, a polysiloxane modified polyurethane elastomer, a reversible imine bond-containing bio-based dynamic cross-linking agent and an antibacterial agent, by constructing a multi-stage elastic network with the synergistic effect of dynamic crosslinking and soft and hard interpenetration, high modulus, high resilience and excellent wrinkle resistance are achieved. In the preparation process, low-temperature pre-crosslinking, directional drafting and secondary dynamic crosslinking processes are adopted, so that molecular chains are arranged in order in the stress direction, the network structure is stable, and the elastic recovery performance is high. The prepared latex threads have good mechanical properties and antibacterial functions, and are suitable for the fields of high-performance textile, medical and functional wearable materials.

The invention provides a vibration reduction assembly which comprises a shell, a dot matrix support and a plurality of composite balls, the shell comprises an inner cavity, the dot matrix support is fixed in the inner cavity and comprises a plurality of unit cell units, a hollow area comprises a gap between the dot matrix support and the shell and internal pores of the dot matrix support, and the hollow area is filled with the composite balls. Comprising a vibration reduction shell and an energy dissipation core. According to the vibration reduction assembly, the dot matrix support is fixed in the inner cavity of the shell, the hollow area is filled with the multiple composite balls, a hydraulic vibration damper does not need to be adopted, and therefore the vibration reduction assembly does not depend on a liquid medium, and the liquid leakage risk is avoided. Besides, the composite ball is arranged in the shell and is not in direct contact with an external vibration source in the working process, and the vibration reduction shell generates elastic deformation instead of bearing continuous high-pressure load when colliding with other composite balls or dot matrix supports, so that permanent deformation or failure caused by long-term compression is avoided.

The application relates to the technical field of paper corner guards, and discloses a compression-resistant and shock-resistant green and environment-friendly paper corner guard which comprises a bottom plate and a paper corner guard body, the paper corner guard body is arranged above the bottom plate, first buffer mechanisms are arranged between the edges of the paper corner guard body and the edges of the bottom plate, first U-shaped blocks are fixedly arranged on the two sides of the upper surface of the bottom plate, first rotating rods are rotatably arranged in the first U-shaped blocks, rotating strips are fixedly sleeved with the rod walls of the first rotating rods, second buffer mechanisms are arranged between the upper ends of the rotating strips and the bottoms of the paper corner guard bodies, and a plurality of arc-shaped elastic plates are sequentially arranged on the two side outer walls of the paper corner guard body from left to right. The compression-resistant and shock-resistant green and environment-friendly paper corner guard adopts multiple multi-direction buffer mechanisms, can greatly improve the compression-resistant and shock-resistant performance of the corner guard, effectively avoids the deformation of the corner guard due to vibration and extrusion, and can maintain good protection effect.

This invention relates to the field of machining technology, specifically to a multi-stage buffering fixture for clamping the shaft of a heavy workpiece. The fixture includes a support plate and two clamping jaws. The two jaws jointly clamp the main shaft of the workpiece. A first support point is located near the center of each jaw, and a second support point is located between the first support point and the rotating shaft. A limiting groove is formed on the support plate, and the shaft is movably disposed within the limiting groove. Hydraulic rods providing hydraulic support are connected to both ends of the shaft. A buffering mechanism is provided on the outer wall of the support plate, with its elastic movable end abutting against the second support point of the clamping jaws. Through the coordinated operation of the hydraulic rods and the buffering mechanism on the support plate, when the heavy workpiece falls, its deceleration and stopping time is greatly extended, thereby transforming the instantaneous rigid impact into a controllable buffering process, fundamentally avoiding permanent deformation or damage to the fixture structure caused by the enormous impact force.