247 results about "Radial compression" patented technology

The thrombectomy device comprises a thrombectomy support, a connecting pipe and a traction wire, an inner cavity is formed in the thrombectomy support with the traction wire, the thrombectomy support with the traction wire comprises a cutting part located at the near end, and an opening which is communicated with the inner cavity of the traction wire and is closed in the circumferential direction is formed in the cutting part of the traction wire. The traction wire cutting part comprises a far-end end part and a near-end end part which have an axial distance; the connecting rod is connected with the near-end end part of the traction wire thrombectomy bracket; the far end of the traction wire is connected with the traction wire thrombectomy support, and when the traction wire is subjected to traction action pointing to the near end, the traction wire applies radial compression force to the traction wire thrombectomy support. The thrombus extraction efficiency of the thrombus extraction device is high.

Disclosed is a rupture disc assembly for use in making a temporary seal in a vessel such as a casing string. The rupture disc assembly may include a rupture disc having a side surface that has a shallow angle taper inward towards a bottom surface of the rupture disc, and a mounting apparatus to support the rupture disc so that the rupture disc forms the temporary seal. When a disc working pressure is applied to a top surface of the rupture disc, engagement / force transmission between the rupture disc and the mounting apparatus produces enough radial compression in the rupture disc due to the shallow angle taper to significantly mitigate or cancel tensile stresses thereby avoiding the rupture disc from breaking. The rupture disc may be configured to break when the rupture disc is subjected to a disc working pressure that is greater than the disc rupture pressure, thereby removing the temporary seal. An axial abutment surface feature may be provided which is configured and operable to limit downward axial movement of the rupture disc relative to said disc support mechanism and thus be operable to restrict the amount of compression said tapered wall surface of said disc support mechanism can exert on said at least a portion of said rupture disc when the top surface of the rupture disc is subjected to said hydraulic pressure within the well.

The invention belongs to the technical field of deep sea equipment, and particularly relates to a deep sea plugging device and a floating base radial pressing force adjusting method thereof. The device is located in a water injection type pressurization cabin, and a driving sliding table mechanism and a floating base are sequentially arranged along the same axis; the driving sliding table mechanism comprises a sliding rail, a sliding rail cabin, a lead screw assembly, a driving motor, a tension and compression sensor and a displacement sensor, the motor drives a lead screw to enable the sliding rail to do reciprocating linear motion through sealing, the two ends of the sliding rail cabin are sealed, and plugging force and displacement data are collected through the sensor; the floating base is composed of a fixing plate, a floating positioning sleeve, a pressing disc and circumferentially distributed elastic adjusting assemblies, the connector female end is installed in the floating positioning sleeve, the elastic adjusting assemblies are distributed along the periphery of the floating positioning sleeve, when axial eccentricity exists in plugging of the connector male end and the connector female end, the floating positioning sleeve is automatically centered under the elastic effect, and interference of eccentric force is eliminated. According to the invention, high-precision, repeatable and controllable testing of the plugging performance of the connector in a high-pressure, high-salt and high-corrosion environment is realized.

The invention discloses a railway overhead cable inspection robot, and relates to the technical field of overhead line inspection, the railway overhead cable inspection robot comprises an inspection box, the upper surface of the inspection box is fixedly connected with a working plate, the upper surface of the working plate is fixedly connected with a motor, and the upper surface of the working plate is rotatably connected with a rotating shaft; the outer side of the rotating shaft is fixedly connected with a rotating plate, and the upper end of the rotating shaft is fixedly connected with the output end of a motor. According to the railway overhead cable inspection robot, when the device moves to a cable butt joint part, two groups of rotating plates synchronously release radial extrusion on a first airbag, the volume of a second airbag is synchronously reduced, displacement generated by deformation of the second airbag can drive a driving plate to reversely rotate, and at the moment, two groups of laser detectors can synchronously move outwards under the driving action of a pulling plate; in view of the fact that the width of the cable butt joint part is obviously larger than that of a single overhead cable, the laser detector achieves more accurate coverage detection of the butt joint area through the design of enlarging the distance between the detection modules.

The bearing device comprises a bearing 10, which is provided with a first ring 12 and a second ring 14, which are rotatable relative to each other. The device comprises at least one insulating sleeve 26, which is attached to the second ring 14 of the bearing and is provided with a bushing 28 and an insulating insert 30, which is formed on at least one of the outer and inner surfaces of the second ring 14 and on at least one outer or inner surface of the bushing 28, which limit its radial thickness. The device also includes at least one elastically deformable element 32, which lies radially between the second ring 14 and the bushing 28 and is in radial contact with at least one of the surfaces of the first ring and the surface of the bushing 28 by being compressed in the radial direction.

This invention provides a pump body assembly, a compressor, and a refrigeration device. The pump body assembly includes a crankshaft, a pump body, a bearing, a piston, and connecting members. The bearing is sleeved on the crankshaft and located on one axial side of the pump body, forming a compression chamber with the pump body. The piston is sleeved on the crankshaft and located within the compression chamber. Multiple connecting members are arranged circumferentially along the pump body, passing through the bearing and connected to the pump body. Each connecting member includes a first connecting member and at least one second connecting member. The first connecting member is closer to the exhaust position of the compression chamber than the second connecting member, and is further away from the crankshaft axis than the second connecting member. The greater distance between the first connecting member and the crankshaft axis corresponding to the exhaust position significantly reduces the radial compression force exerted by the first connecting member on the inner wall of the compression chamber at the exhaust position, thereby reducing the localized protrusions formed on the inner wall of the compression chamber due to the first connecting member locking the pump body.

Provided is a downhole tool, a well system, and a method for forming a well system. The downhole tool, in one aspect, includes a latch collet including a collet body, the collet body having a collet body opening extending through a thickness (tcb) thereof and a plurality of collet fingers, as well as a mandrel positioned within the collet body, the mandrel having a mandrel slot therein. The downhole tool, according to this aspect, further includes a bore sensor positioned within the collet body opening and the mandrel slot, the bore sensor configured remain in a radially extended state when the latch collet is in too large size casing and configured to be pushed to a radially compressed state when the latch collet is in the correct size casing and thereby not prevent the collet body and the mandrel from sliding relative to one another.

The invention relates to an electricity taking device for electric power measurement and a use method thereof, and belongs to the technical field of electric power measurement. According to the electricity taking equipment for electric power measurement and the using method thereof, the electricity taking equipment for electric power measurement comprises a three-phase electricity meter and an installation frame, the installation frame is fixedly connected to the surface of the three-phase electricity meter, a safety module and an electromagnetic switch are installed in the installation frame, and a protection module fixedly connected with the installation frame is installed on the surface of the safety module; the protection module is fixedly connected between the safety module and the mounting frame through the rubber frame, and high elasticity and damping characteristics of the protection module form a first shock absorption barrier, so that low-frequency vibration can be effectively absorbed. The capsule ring is sleeved on the surface of the connection position of the terminal of the fuse module, and the capsule ring is tightly attached to provide continuous radial pressing force, so that the terminal is prevented from loosening due to vibration, the stability of electrical connection is ensured, and the problem of connection failure caused by vibration is fundamentally solved.

Systems and methods which provide a bulkhead anchor configuration in which an anchor body includes flexure finger members and a radial bulkhead operable in cooperation to impart a radial compressive force to a corresponding lead body are described. A first portion of a bulkhead anchor body may comprise a plurality of flexure finger members disposed in a corolla configuration forming an anchor lumen through which a lead body may be inserted. A second portion of the bulkhead anchor body may comprise a radial bulkhead having a flexure profile configured to operatively engage the flexure finger members. A locking mechanism may be used to retain the first and second portions of the bulkhead anchor in their relative positions such that the radial compressive force is maintained upon the lead body indefinitely.

The utility model relates to a valve frame and an artificial heart valve. The valve frame can be switched between a radial compression structure and a radial expansion structure; each of an inflow row grid, an outflow row grid and a middle row grid of the valve frame comprises two rows of wave rods which are oppositely arranged and connected with each other, each row of wave rods comprises a plurality of supporting rods, and the opposite ends of every two adjacent supporting rods are connected at a joint part; each joint part comprises a solid part and a vacant part radially penetrating through the solid part, the opposite ends of the two adjacent supporting rods are smoothly connected with the solid part on the two sides of the vacant part, the vacant part is also in a smooth shape, and an opening of the vacant part corresponding to the wave crest of the wave rod faces the wave trough in the axial direction; the opening of the vacant part corresponding to the wave trough of the wave rod faces the wave crest in the axial direction; the joint part is used for helping each grid to uniformly deform in the structure conversion process of the valve frame; the width of the solid part is larger than or equal to the sum of two times of the width of the supporting rod and the width of the vacant part. The heart valve prosthesis comprises the valve frame, a covering film and at least two artificial valve leaflets capable of being opened and closed oppositely.

This utility model relates to the field of rubber hose joint sealing technology, specifically a rubber hose joint sealing component, including a rubber sealing sleeve. A conical sealing sleeve is fixedly installed at one end of the rubber sealing sleeve, and a spiral compression ring is threadedly connected to the end of the conical sealing sleeve away from the rubber sealing sleeve. Multiple annular ridges are fixedly provided on the inner wall of the rubber sealing sleeve. When the spiral compression ring is rotated, the thread converts the axial displacement into radial compression. The conical surface of the conical sealing sleeve is compressed, generating an initial sealing force. When the fluid pressure inside the pipe increases, the rubber expands further under pressure, and the conical surface of the conical sealing sleeve engages more deeply with the thread of the spiral compression ring, forming a positive feedback seal. At the same time, the pipe and the annular ridges fit more tightly. Furthermore, when the spiral compression ring is rotated, its internal thread advances along the conical surface of the conical sealing sleeve, converting the axial force into radial compression force, forcing both the conical sealing sleeve and the rubber sealing sleeve to fit tightly against the pipe, thereby significantly improving the sealing performance of the rubber hose joint.

The utility model discloses a kind of paper sleeves for preventing metal coiled material from collapsing, comprising: main body cylinder, by multiple layers high-strength kraft paper adhesion;Radial reinforcement structure, is set to one end of the main body cylinder End, and it is distributed along circumference direction;Axial stiffener, along the axial extension of the main body cylinder, and it is set to the wall of the main body cylinder;Waterproof barrier layer, is set to the outer surface of the main body cylinder;Buffer layer, is set to the inner wall of the main body cylinder, the utility model relates to paper sleeve technical field.The paper sleeve for preventing metal coiled material from collapsing, radial compression strength is greatly promoted, can effectively resist the weight and external impact of heavy coiled material, the waterproof barrier layer of outer surface makes paper sleeve have waterproof capacity, effectively prevent inner circle indentation, scratch and other surface defects, improve the finished product quality of coiled material, embedded reinforcing ring or annular protruding portion is integrated with main body cylinder, stress is uniform, there is no risk of loosening and falling off.

A hose assembly includes an inner tube, a connector, a collar, and an outer metal conduit. The connector includes a stem portion inserted into a distal end of the inner tube and a body portion extending radially outward and axially rearward of the stem portion. The collar is substantially coaxial with and surrounds the distal end of the inner tube, with the collar being in radial compression against the inner tube. The outer metal conduit is substantially coaxial with and surrounds the inner tube and the collar, with the outer metal conduit terminating at a distal end welded to the body portion of the connector.

A delivery assembly constituted of: a prosthetic valve comprising a plurality of intersecting struts, and a delivery apparatus comprising: a handle; a delivery shaft extending distally from the handle; and a flex sensing assembly, comprising: at least one flex sensor coupled to at least one of the plurality of struts; and a control unit in communication with the at least one flex sensor, wherein the prosthetic valve is movable between a radially compressed configuration and a radially expanded configuration, and wherein, responsive to an output of the at least one flex sensor, the control unit is configured to generate a signal indicative of a diameter of the prosthetic valve.

When a spiral-wound gasket is fitted into the gasket housing groove and tightened, the sealing performance of the spiral-wound gasket is maintained even if there is a difference in compression in the radial direction. [Solution] The spiral gasket 30 comprises multiple types of hoop material, each consisting of a strip-shaped metal material wound in a spiral shape, and a filler material 33 made of a softer material than these hoop materials, interposed between the hoop materials in the radial direction. The multiple types of hoop material include a first hoop portion 31 made of a first metal material with a first Young's modulus and a second hoop portion 32 made of a second metal material with a second Young's modulus lower than the first Young's modulus. It is used in areas where the compression amount of the second hoop portion 32 is greater than the compression amount of the first hoop portion 31.

The invention discloses a composite material with longitudinally distributed basalt fibers as well as a preparation method and application of the composite material. The composite material comprises at least one layer of base plate, wherein the base plate is formed by closely paving a plurality of prismatic unit bodies which are consistent in thickness and have regular polygonal cross sections; the unit bodies in the composite material are fixed into a whole through an adhesive; the unit body is composed of a plurality of basalt fibers which are longitudinally arranged; the fiber direction of the basalt fibers in the unit bodies is the same as the axis direction of the unit bodies and is perpendicular to the plate face of the base plate obtained by tiling the unit bodies. The core of the bulletproof armor plate is that the distribution direction of basalt fibers is changed from the radial direction to the axial direction, so that the problem that the radial pressure resistance is insufficient when traditional fibers are transversely distributed is solved, and the prepared bulletproof armor plate can convert impact force of bullets into pressure on the axial direction of the fibers; the extremely high axial compressive strength of the basalt fibers is fully utilized, so that the bulletproof efficiency is remarkably improved, and the light weight of the armor is achieved.

Bearing damper systems for gas turbine engines include a bearing structure and, a housing arranged outward from the bearing structure and defining a plurality of axially extending recesses arranged circumferentially about the axis. A set of energy dissipating elements are arranged within the recesses and are axially constrained therein. The energy dissipating elements are arranged to receive a radial outward force from the bearing structure. Each energy dissipating element may be radially compressed while being axially constrained in response to a radial movement of the bearing structure and enter a loaded state with energy associated with the compression is absorbed into the material of the energy dissipating element. Each energy dissipating element is configured to convert at least a portion of the absorbed energy to heat and is configured to return to an unloaded state after removal of the load from the bearing structure.

A device is provided for securing a prosthetic valve at a native valve. The docking device can include a coil comprising a plurality of helical turns when in a deployed orientation. The docking device can include a compressible plug attached to the coil by being coupled to at least a portion of a helical turn thereof. The compressible plug is movable between a radially compressed state in a delivery orientation and a radially expanded state in the deployed orientation. The compressible plug includes: a compressible scaffold formed from a shape-memory material; and a plugging component operably coupled with the compressible scaffold to provide a liquid plugging function to the compressible plug.

The invention discloses a laser welding strong co-processing method and tool for a stranded conductor. The method sequentially executes five working procedures that radial compression force and axial pretension are applied to the stranded conductor to construct quasi-materialization constraint, and preheating is conducted; laser welding is executed in the local inert gas microenvironment, and the temperature of a molten pool is monitored; a sacrificial absorption layer is arranged, a deionized water restraint layer is injected, and a flexible anvil block loaded with liquid metal-based magnetorheological fluid is arranged on the back of a conductor; the magnetic field intensity is dynamically adjusted according to the material of a processing area, reflection is inhibited by using carrier liquid acoustic impedance matching in a low-impedance metal section, a backing is in a quasi-solidified state to absorb shock wave residual energy through magnetic particle chaining in a high-impedance metal section, and laser shock peening is executed; and after strengthening, the compression force is unloaded to recover micro-pores among the strands, so that the through-layer drying of stranding gaps is realized. According to the invention, multi-physical field cooperation of machinery, fluid, acoustics and thermodynamics is realized, and the process stability and service reliability of the joint are improved.

The invention relates to an adapter for connecting a actuator to a manually operable shut-off valve, in particular a ball valve, with a flange, with a fastening section formed on the flange for fastening the actuator and with a square adapter for transmitting a torque from the actuator to the control shaft of the shut-off valve. The flange has a flange ring and an insert arranged in the flange ring, the flange ring and the insert being arranged along the axis of the control shaft, in that the insert has an internal opening with an internal cross-section adapted to an external dimension of the shut-off valve, in that the insert is designed as a ring which is open in the azimuthal direction and can be compressed radially, that the flange ring and the insert have conical contact surfaces corresponding to one another and that screw means are provided for tightening the flange ring and the insert in the axial direction relative to one another in order to reduce the internal diameter of the internal opening. This solves the problem of specifying an adapter and a system of the type mentioned above, which extends existing installations and, in particular, is easy to position and assemble,

An integral motor pump (IMP) or turbine (IMT) applicable to a low temperature process liquid, such as liquid hydrogen, includes an impeller having an annular ring of permanent magnets attached thereto passing in axial proximity to a plurality of stator coils. The magnet ring is radially bounded by inner and outer compression sleeves having coefficients of expansion (CTEs) respectively less than and greater than the CTE of the magnets. Unequal thermal contraction of the compression sleeves, when cooled by the process liquid, applies radial compression to the magnet ring, overcoming centrifugal forces and maintains the magnets in radial compression, thereby preventing fracturing or pulverizing of the magnets. The magnet ring can be a monolithic ring with alternating magnetic regions, a ring of closely abutting magnets, or a ring of discrete magnets surrounded by a barrier material having a CTE equal to the magnet CTE.

The invention provides an interventional instrument adopting friction to assist positioning, the interventional instrument comprises a stent, the stent is of a frame structure with a hollow area, the stent has a loading state of radial compression and a release state of radial expansion, the interventional instrument further comprises a friction increasing component, an outer sealing film is arranged on the periphery of the stent, and the friction increasing component is arranged on the outer sealing film. The outer sealing film is a flexible skirt edge; in a loading state, the outer sealing film axially extends to shield the friction increasing component; and in the release state, the outer sealing film is axially stacked, and the friction increasing component is exposed. According to the interventional instrument, by arranging the friction increasing component and improving the mounting position of the friction increasing component, on one hand, a friction positioning mode is provided, on the other hand, adverse effects on loading are avoided, and potential safety hazards are eliminated as much as possible.

The utility model relates to the technical field of medical instruments, in particular to an artificial valve clamping piece and a conveying system. The artificial valve clamping piece comprises a clamping piece body, a connecting wire and a traction structure, the clamping piece body comprises a pipe body and a plurality of through holes formed in the pipe body, the pipe body is in a wave shape, and the two ends of the pipe body are closed to form a ring shape; the connecting wire penetrates into the tube body, and the end part of the connecting wire penetrates through the through hole in the tube body and then is suitable for being connected with the artificial valve; the traction structure comprises a traction wire, the traction wire is arranged in the pipe body in a penetrating mode through a through hole in the pipe body, and the traction wire is suitable for being connected with a conveying system. The clamping piece is of a periodic wave-shaped or fluctuating annular structure, can be fixed to the periphery of the outer surface of the artificial valve, can be radially compressed and expanded according to the size of the internal artificial valve, and is matched with the artificial valve to clamp the autologous valve leaflet, so that the artificial valve can be stably anchored at an accurate position without displacement, and meanwhile, the clamping piece can be used for clamping the autologous valve leaflet. The clamping device can reduce the occurrence risk of perivalvular leakage.

A hot line clamp for use in 15, 25 and 36 kV electrical power distribution networks is disclosed. The clamp includes an eyebolt receiver body configured to receive a cable or stirrup and a branch connection. In one embodiment, torque applied to a nut causes radial compression of a conductor against the body, distributing force uniformly. In another embodiment, torque applied to a screw produces axial compression, and the screw includes a fracture region that breaks at a predetermined torque threshold, indicating proper tightening and preventing over-torque. Both embodiments include a compression system that maintains electrical and mechanical integrity under thermal cycling.

A seal arrangement for a liner hanger, including a seal ring, a lock ring adjacent the seal ring, the lock ring including a body configured to limit radial compression of the seal ring, a wing extending from the body in an axial direction of the body, and a shoulder defined by the body, the shoulder complementary to a lock member. A method for assembling a seal arrangement, including positioning a lock ring on a tubular, positioning a seal ring on the tubular, repeating the positioning of a lock ring and the positioning of the seal ring until a selected number of lock rings and seal rings are alternatingly disposed on the tubular, and feeding a lock wire through a lock wire window to engage the tubular and the lock ring to retain the lock ring axially to the tubular.

The invention belongs to the technical field of ship propulsion system bearing structure design and vibration control, and discloses an isobaric expansion type stern bearing based on a negative Poisson's ratio topological lining structure, and a negative Poisson's ratio topological layer is composed of geometric topological units and generates tangential expansion deformation under the action of radial load. Through the negative Poisson's ratio effect, the radial compression load of the shaft system is converted into circumferential expansion response, isobaric expansion of a shaft-lining contact area is achieved, the effective bearing area is increased, and contact pressure distribution is homogenized. The topology lining is divided into a head end topology area, a transition area, a middle topology area, a transition area and a stern end topology area in the axial direction, and all the areas are matched with non-uniform distribution of shaft system bending, unbalance loading and lubricating states under the low-speed and heavy-load working conditions by regulating and controlling topological unit geometric parameters, equivalent Poisson ratios and negative Poisson ratio topological layer thicknesses. According to the invention, edge high pressure and local wear can be obviously reduced, water film stability is improved, bearing capacity and vibration and noise reduction performance of the stern bearing are improved, and service life is prolonged.

The utility model discloses a body outside prestress structure for reinforcing masonry structure house, including masonry mechanism and tightening mechanism, the masonry mechanism includes building block, multiple steel strand bundles transversely throughout the both ends of building block, tightening mechanism, the tightening mechanism includes multiple fixed line cover of the movable sleeve joint in multiple steel strand bundles both ends. In the utility model, after steel strand bundle transversely throughout building block, the fixed line cover is sleeved in the outside end part of steel strand bundle, passes through the rotation screw rod, drives two pressure blocks and inserts the inside of fixed line cover and moves back to, then the vertical embedding of axle is inserted in the stranding gap of steel strand bundle, and the radial compression of steel strand bundle line body is realized to pressure block simultaneously, and this double fixed structure effectively promotes the combination intensity of fixed line cover and steel strand bundle, can prevent both from separating in hydraulic tensioning operation, can also ensure the uniform transmission of load in the tensioning process, thereby guaranteeing the stable implementation of hydraulic system operation.

This utility model discloses a double-sealed sterile sealing cap and a burlap sack, including an inner cap, an outer cap, and a sealing assembly between them. A first annular sealing ridge on the edge of the inner cap and a first annular sealing groove on the outer cap are press-fitted to form an inner cavity, and a sealing ring enhances the sealing performance. A second annular sealing ridge is provided on the edge of the outer cap, on which an annular airbag is embedded. Inflated through the air inlet, it forms a radial compression sealing structure, achieving an outer layer seal. The sealing assembly also includes a vacuum valve penetrating the outer cap, allowing vacuum evacuation of the container through the air vents in the inner cap. A locking assembly consisting of a pressing block, an elastic connecting strip, and a latch is provided on the top of the outer cap to further strengthen the seal. This sealing cap, through its double-sealing structure and the synergistic effect of vacuum sealing and airbag sealing, effectively ensures the sterility of the burlap sack, prevents contamination, and improves ease of use and stability, making it suitable for the stringent requirements of sterile packaging in the medical field.

The invention, which relates to the technical field of lens detection, discloses a spherical lens multi-angle compression resistance detection device comprising a main body, a lateral sliding clamping mechanism, a connection driving frame and a descending mechanism. Three groups of lateral sliding clamping mechanisms are triangularly distributed, a lateral sensor module is combined to accurately detect the radial compression resistance of the side surface of a lens and simulate the stress environment when the lens and a lens frame are assembled, a driving mechanism and a descending mechanism are linked through a connecting mechanism, and an annular electromagnet controls an inserting block to be separated from an inserting hole after lateral detection reaches the standard. The axial pressure head independently carries out axial compression resistance detection under the condition of keeping a lateral clamping state, multi-angle detection is completed through one-time clamping, the positioning error caused by multiple times of clamping is avoided, the detection efficiency and the data consistency are improved, the axial sensor module and the lateral sensor module work cooperatively, the pressure value is accurately recorded, and the detection precision is improved. A reliable basis is provided for lens quality judgment, and the requirements for accuracy and high efficiency of batch detection of optical lenses are met.