2262 results about "Wedge shape" patented technology

The invention relates to the technical field of reinforcing steel bar performance detection, in particular to reinforcing steel bar tensile test detection equipment which comprises two sliding seats, the two sliding seats can move in opposite directions, each sliding seat is provided with a rotating gear, a sleeve replacing hole and two wedge-shaped blocks, and the rotating gear can rotate around the axis of the rotating gear; a pressing sleeve is spirally inserted into the rotating gear, a threaded sleeve is inserted into the pressing sleeve, and the threaded sleeve is configured to be capable of being in threaded sleeve connection with the deformed steel bar; the two wedge-shaped blocks on the same sliding seat are symmetrically arranged at an interval, and the wedge surfaces of the two wedge-shaped blocks are oppositely arranged and are of a splayed structure; each wedge-shaped block is provided with an auxiliary clamping block, the pressing sleeve is sleeved with the wedge-shaped blocks, and the wedge-shaped blocks can slide in the radial direction of the pressing sleeve, so that when the pressing sleeve moves in the axial direction, the auxiliary clamping blocks can slide along the wedge face and are used for assisting in clamping deformed steel bars; the sleeve replacing hole and the threaded sleeve are arranged correspondingly, so that the threaded sleeve can be replaced conveniently, and the test efficiency is improved.

The anchor rod comprises a hollow rod body, a grouting channel is formed in the hollow rod body, and multiple sets of through grooves are evenly distributed in the peripheral side of the hollow rod body; the driving unit comprises a top shaft movably arranged in the hollow rod body, the axis of the top shaft is overlapped with the axis of the hollow rod body, the clamping arms are movably arranged in the corresponding through grooves, a top plate is fixedly arranged at one end of the top shaft, and the end, away from the top shaft, of the top plate is located on the outer side of the end of the hollow rod body; wedge-shaped blocks with the number corresponding to that of the multiple sets of clamping arms are fixedly arranged on the peripheral side of the top shaft, and the multiple sets of clamping arms extend out of the hollow rod body under the action of the corresponding wedge-shaped blocks. The through grooves evenly distributed in the peripheral side of the hollow rod body are matched with the clamping arms, when the anchor rod is installed, the clamping arms extend out of the hollow rod body under the action of the wedge-shaped blocks, the clamping arms can disperse and resist external force from different angles, and compared with a traditional anchor rod with the single anchoring direction, pulling resistance can be more effectively provided, and the stability of the anchor rod under the complex stress condition is enhanced.

The present application provides an anti-icing sensor, which belongs to the technical field of detection equipment, and specifically includes a sensitive element, a mounting seat, and a sensor housing connected to the mounting seat. A temperature measuring end is provided on the side of the sensor housing away from the mounting seat, and an anti-icing structure is provided on the temperature measuring end. The sensitive element is connected to the sensor housing and is located on the leeward side of the temperature measuring end. The anti-icing structure is configured as a wedge-shaped structure, and the wedge-shaped structure includes a windward end and a leeward end. The cross-sections of the windward end and the leeward end parallel to the airflow direction are both isosceles triangles, and the first vertex angle of the isosceles triangle of the windward end faces the incoming flow direction, and the second vertex angle of the isosceles triangle of the leeward end faces away from the incoming flow direction, and the angle of the first vertex angle is greater than the angle of the second vertex angle. Through the processing scheme of the present application, the situation where the temperature measuring function of the sensor fails due to icing of the temperature measuring end can be effectively avoided, and the test stability can be improved.

The invention provides a rail transit environment vibration directional control method and system using a wedge-shaped tree array. According to the method, ground surface vertical vibration caused by passing of a train beside a certain ballast track is calculated by constructing a semi-analytical three-dimensional dynamic response model, simulation of the tree vibration reduction measure effect is achieved by coupling the wedge-shaped tree array into the model, and the tree vibration reduction measure effect is achieved by adjusting parameters of the wedge-shaped tree array. The wedge-shaped tree array with the expected vibration reduction effect is obtained, and then design parameters of wedge-shaped tree array vibration reduction measures are obtained. The wedge-shaped tree array is arranged between a track structure and a target vibration control area, and the selection and arrangement mode of tree characteristics such as tree species, tree height and tree diameter can be optimally designed according to a target vibration reduction frequency band and an expected vibration reduction effect. The invention overcomes the limitation of the traditional vibration isolation technology on cost and implementation, provides a wedge-shaped tree array vibration reduction measure which is low in cost and easy to arrange and meets the environmental protection requirement, and has good popularization and application potential.

The invention relates to the technical field of metal casting, and discloses an aluminum alloy wheel low-pressure casting mold and a casting method.The aluminum alloy wheel low-pressure casting mold comprises a top mold, a side mold and a bottom mold, the top mold is provided with a top mold core, the top mold core comprises a left mold core, a right mold core, a front mold core and a rear mold core which are alternately arranged in the circumferential direction, and the left mold core and the right mold core are in sliding connection; first wedge-shaped faces are arranged on the left-right mold core and the front-back mold core, dovetail grooves are formed in the first wedge-shaped faces in the vertical direction, a center sliding block used for adjusting the top mold core is further included, dovetail protruding blocks corresponding to the dovetail grooves are arranged on the center sliding block, and the dovetail protruding blocks and the dovetail grooves are matched in an inserted mode and connected in a sliding mode. According to the method, the shape of the wheel blank rim is thickened without considering the draft angle, the operation of removing the thickened part of the rim through subsequent machining turning to form the concave rim is omitted, the workload of the machining procedure is reduced, the production efficiency is guaranteed, and the metal utilization rate is increased; meanwhile, the problem that internal defects of the wheel blank are exposed is avoided, and the wheel quality is guaranteed.

The utility model discloses a printing ink blocking mechanism for preventing ink splashing, and relates to the technical field of gravure printing machines, including a base, an ink tank fixedly installed on the top of the base, a wedge-shaped mounting block fixedly installed on one side of the ink tank, and a sliding plate slidably installed in the wedge-shaped mounting block. The utility model inserts a spring steel sheet into the sliding plate, and then fixes it by bolts, and then inserts the sliding plate as a whole into the wedge-shaped mounting block, and limits the position by the block, because the spring steel sheet has elasticity, at this time, the upper end of the spring steel sheet contacts the scraper, and when the scraper needs to be adjusted, the spring steel sheet can always contact the lower end of the scraper, and the ink splashed from the ink transfer roller will be blocked by the guide slope of the spring steel sheet, and then flow back into the ink tank through the guide slope, and because the sliding plate is slidably installed on the wedge-shaped mounting block, when the gravure printing machine is stopped, the sliding plate can be slid out as a whole, and then the spring steel sheet can be wiped, and cleaning is also more convenient.

The invention discloses a fabricated strain insulator string device for an overhead transmission line, and relates to the technical field of electric power fittings, a plurality of disc-shaped insulating covers are hinged between a first U-shaped clamp and a second U-shaped clamp, and the first U-shaped clamp is hinged to the corner of a wedge-shaped strain clamp; a front end wedge-shaped groove and a tail end wedge-shaped groove are formed in the wedge-shaped strain clamp, a plurality of pairs of arc-shaped clamping plates are arranged on the inner bottom wall of the front end wedge-shaped groove, a plurality of U-shaped threaded rods are arranged on the wedge-shaped strain clamp in a sleeving mode, a plurality of fixed connecting plates are fixedly arranged on the wedge-shaped strain clamp, and the U-shaped threaded rods penetrate through the fixed connecting plates and are locked with a pair of self-locking nuts in a threaded mode. And a T-shaped seat is fixedly arranged in the middle of the U-shaped threaded rod, and a pressing mechanism is mounted on the T-shaped seat. The device can be transported in a split mode and is adaptive to complex terrains; the arc-shaped clamping plate and the downward pressing mechanism clamp the power transmission line in a dual mode, adapt to power transmission lines with different diameters and prevent looseness. Components are detachable, installation and maintenance are convenient, cost is reduced, and efficiency and power supply reliability are improved.

The utility model relates to the field of material transportation, and discloses a chain type automatic feeding machine which comprises a machine frame, a lifting mechanism installed on the machine frame, a stock bin and a sliding conveying channel installed at the side end of the machine frame, and the lifting mechanism comprises a chain; the stock bin comprises a surrounding plate, a sliding plate fixed to the bottom of the surrounding plate and a magnetic attraction baffle hinged to the sliding plate, the sliding plate is obliquely arranged, the surrounding plate is detachably connected with the chain, and a magnet is fixedly arranged on the face, close to the magnetic attraction baffle, of the surrounding plate; an upper wedge-shaped block used for opening the magnetic attraction baffle is fixedly arranged at the top of the machine frame, the bottom face of the upper wedge-shaped block is an inclined face inclining towards the side close to the stock bin, the bottom edge of the upper wedge-shaped block corresponds to the magnet, and a lower wedge-shaped block used for closing the magnetic attraction baffle is fixedly arranged at the bottom of the machine frame. The top face of the lower wedge-shaped block is an inclined face inclining towards the side away from the stock bin, and the top edge of the lower wedge-shaped block corresponds to the left 1 / 2 position of the magnetic attraction baffle. According to the scheme, the technical problem that materials are prone to being damaged in the feeding process can be solved.

A lightweight composite roofing support system comprises a longitudinally-extending core member comprising a longitudinally-extending first roof contact side comprising a first edge and opposed second edge, a longitudinally-extending second side comprising a second side working surface having a second width and a second length that is greater than the second width, the second side tapering toward the first edge at a first predetermined acute angle, and a longitudinally-extending third side comprising a third side working surface having a third width and a third length that is greater than the third width, the third side tapering toward the second edge at a second predetermined acute angle that is different than the first predetermined acute angle, a first end comprising an integral first recess defining a first handle, and an opposed second end comprising an integral second recess defining a second handle, the core member comprising a wedge-shaped lateral cross-section.

The utility model discloses a window breaking hammer for double-layer laminated glass, which relates to the field of automobile safety instruments, and comprises a grab handle and a hammer head, the hammer head is provided with a tapered wedge-shaped part, the end part of the hammer head is provided with a conical tip, one side facing the grab handle is provided with a cutting structure for cutting a glue film, the glass is broken and punctured through the conical tip, so that the front section of the hammer head enters, and the glass is broken through the cutting structure. And then, the grab handle is rotated by taking the non-penetrating part of the hammer head as a fulcrum, and the tough middle adhesive film is efficiently cut by the cutting structure according to the slope lever principle, so that the escape hole is quickly formed. In addition, an auxiliary sharp corner structure can be arranged at the tail part of the hammer head to cooperatively destroy the adhesive film; and a safety belt cutting device and an anti-falling flange are integrated on the grab handle or the hammer head, so that the multifunctionality and the operation safety are enhanced. The window breaking device solves the key problem that a traditional window breaking device cannot effectively process a laminated glass middle film, and is particularly suitable for automobile emergency window breaking escape.

The utility model discloses a precision spherical surface anti-vibration sizing block, which relates to the technical field of spherical surface sizing blocks, and comprises a sizing block shell and a spherical surface support table, the top of the sizing block shell is provided with a sizing block hole, a sliding wedge-shaped block is arranged in the sizing block shell, the top surface of the sliding wedge-shaped block is matched with a lifting wedge-shaped block, the top of the lifting wedge-shaped block is fixedly provided with a lifting column, and the lifting column is provided with a lifting hole. The lifting column penetrates out of the sizing block hole and is fixedly provided with a bearing plate, a column body is fixed to the bearing plate, a spherical concave face is formed in the top of the column body, a spherical convex face is formed at the bottom of the spherical supporting table and is matched with the interior of the spherical concave face, the column body comprises a fixed half-type column and a detachable half-type column, the fixed half-type column is fixed to the bearing plate, and the detachable half-type column is fixed to the bearing plate. The detachable half-type column is connected with the fixed half-type column through a bolt, and the spherical supporting table is matched with the column body through a spherical surface, so that the spherical supporting table has the fine adjustment freedom degree and can adapt to the uneven inclination angle of the bottom face of a machine tool, the contact area between the spherical supporting table and the machine tool is large, and therefore the supporting effect is improved.

The utility model provides a building material detection device, which belongs to the field of building material detection and comprises a detection structure capable of automatically clamping multiple positions of a building material; the detection structure comprises a mounting plate capable of moving up and down, two wedge-shaped plates are fixed at the bottom of the mounting plate, a wedge-shaped block and a clamping plate which are matched with the wedge-shaped plates for use and can reset are mounted on the detection table, the wedge-shaped plate moves downwards to move relative to the wedge-shaped block, and the clamping plate can be driven to clamp a detection material. A mounting plate is fixed at the bottom of the mounting plate, detection columns with adjustable positions and quantity are mounted on the mounting plate, and multi-position detection of the building material can be realized by adjusting the quantity and the positions of the detection columns. According to the building material detection device, building materials are automatically clamped through the hydraulic cylinder, meanwhile, the hardness and strength of the building materials can be detected, the detection columns convenient to disassemble and adjust are arranged, multi-point detection can be conducted on the building materials, and detection is more comprehensive.

The invention relates to the technical field of prefabricated part production, and discloses a concrete prefabricated part pouring production line for a tunnel. The stirring assembly and the stirring barrel are arranged in a penetrating manner; the driving assembly is arranged in the stirring barrel, the driving assembly is mounted on the inner wall of the stirring barrel, and the driving assembly is connected with the stirring assembly; and the tiny stirring part is arranged in the stirring barrel. Through arrangement of the stirring assembly, especially cooperative cooperation of a first wedge-shaped column, a second wedge-shaped column, a limiting sliding block and a first spring, when stirring is started, an auxiliary circular plate rotates to promote the first wedge-shaped column to rotate along with the first wedge-shaped column and extrude the inclined surface of the second wedge-shaped column, and the first wedge-shaped column slides in a limiting sliding groove in cooperation with the limiting sliding block and elastic buffering of the first spring; the auxiliary circular plate is successfully driven to transversely reciprocate, so that the stirring rod is driven to realize reciprocating transverse stirring; the dynamic stirring mode greatly improves the stirring flexibility.

The invention provides a box body interlocking structure which comprises a mounting groove, the mounting groove is located in one side of a box body and communicates with clamping grooves in one side of the box body, pushing blocks are slidably arranged at the positions, communicating with the clamping grooves, of the mounting groove, a movable rod is arranged in the mounting groove, and wedge-shaped blocks and movable movable rods are arranged at the positions, corresponding to the pushing blocks, of the movable rod. The wedge-shaped block can be driven to abut against the inclined face on the pushing block, so that the pushing block moves into the clamping groove, and the clamping block in the clamping groove is pushed out of the clamping groove; and the locking assembly is used for locking the position of the movable rod after the clamping block retreats from the clamping groove. According to the invention, by moving the movable rod, the pushing block moves into the clamping groove, and the clamping block located in the clamping groove is pushed out of the clamping groove, so that unlocking between the upper box body and the lower box body is completed; and through the arrangement of the locking assembly, the clamping block can be prevented from being automatically clamped in the clamping groove in the unlocking state. According to the scheme, during unlocking, one-man operation can be achieved, unlocking of the two box bodies can be completed only through one-time operation, and use is convenient.

The invention discloses a mechanical connection type precast pile for collapsible loess treatment, and relates to the technical field of precast pile connection, the mechanical connection type precast pile comprises a foundation pile and precast piles distributed at the top of the foundation pile, and a connection mechanism is arranged in each precast pile; a lower connecting mechanism is arranged at the bottom of the precast pile; an upper connecting mechanism is arranged at the top of the precast pile and the top of the foundation pile; the lower connecting mechanism at the lower end of the precast pile and the upper connecting mechanism at the upper end of the foundation pile are spliced and clamped and fixed through an arranged fixing mechanism, and the fixing mechanism comprises a plurality of wedge-shaped grooves formed in the side wall of the upper connecting plate and the side wall of the lower connecting plate. The mechanical connection type precast pile for collapsible loess treatment has the effects of being convenient to install, high in structural strength and high in stability.

The utility model discloses a honing head coarse oil stone seat expanding structure which comprises a honing head, a connecting seat is installed on the honing head, an oil stone seat is installed on the honing head, an oil stone is assembled on the oil stone seat, the oil stone seat is movably connected with the honing head to conduct expanding operation, and an adjusting middle shaft capable of sliding up and down is installed in the honing head. A fine grinding push groove and a coarse grinding push groove are formed in the outer side of the adjusting middle shaft, and a fine grinding wedge-shaped body and a coarse grinding wedge-shaped body which extend into the fine grinding push groove and the coarse grinding push groove correspondingly are installed on the oilstone base. According to the expanding structure for the coarse grinding oilstone seat of the honing head, the middle shaft is adjusted to move downwards to push the fine grinding wedge-shaped body through the fine grinding push groove so that the corresponding oilstone seat can expand outwards, the middle shaft is adjusted to move upwards to push the coarse grinding wedge-shaped body through the coarse grinding push groove so that the corresponding oilstone seat can expand outwards, and compared with an oil cylinder driving mode, the expanding structure is more direct and simpler; and the oil leakage risk does not exist, maintenance and repair are very convenient, cost is low, and control is direct, simple and convenient.

The double-track stepping type conveying mechanism comprises a track beam and a double-track track, the double-track track is horizontally installed under the track beam, a walking gap is formed in the extending direction of the double-track track, a double-track pulley hook penetrates through the walking gap from bottom to top, and a walking wheel matched with the double-track track is installed at the top of the double-track pulley hook through a pulley yoke; a poke rod capable of directionally reciprocating in the horizontal direction is arranged in the track beam, a wedge-shaped poke block is connected to the bottom of the poke rod, when the poke rod directionally moves in the extending direction, the wedge-shaped poke block can poke the pulley yoke to directionally move in a stepping mode, and when the poke rod reversely moves, the wedge-shaped poke block can deflect and reversely move to cross the pulley yoke. According to the double-track stepping type conveying mechanism, the carcasses can be conveyed one by one in the pre-cooling room in a stepping mode, the distance between the different carcasses is ensured, the conveying work efficiency is high, the quality of the carcasses can be ensured, and cross contamination between the carcasses is reduced.

The invention relates to the technical field of wind power generation equipment, in particular to a wind driven generator foundation ring reinforcing device and method.The device comprises a reinforcing table arranged at the top of an original concrete foundation, a conical table is arranged in a conical cavity between the reinforcing table and a tower drum, and a pre-pressing component is arranged at the top of the reinforcing table; the connecting cylinder is connected with the first supporting seat; the pressing rod penetrates through the connecting cylinder, and the lower end of the pressing rod is provided with a pressing block for extruding the conical table; the pre-tightening spring is pressed between the connecting cylinder and the pressing block and is arranged on the pressing rod in a sleeving manner; the limiting column is arranged at the upper end of the pressing rod and provided with a plurality of tooth grooves in the axial direction, the lower sides of the tooth grooves are perpendicular to the axis of the limiting column, and the upper sides of the tooth grooves are of a wedge-shaped structure; a second supporting seat is fixedly arranged at the top of the reinforcing table, and the limiting block is elastically arranged on the second supporting seat and provided with limiting teeth matched with the tooth grooves so as to limit upward movement of the limiting column. The conical table is prevented from being abraded quickly, and the service life of the conical table is greatly prolonged.

Disclosed are a method and apparatus devices for an acrylic display case wherein the two panels (walls or ceiling or even floor) are adjoined using substantially wedge-shaped (trapezoidal) fittings capable of easily snapping into slot cut-outs / notches in the acrylic panel walls (or ceiling or floor) before final screw-tightening. The wedge-shaped fittings are easily positioned (inserted by sliding-insertion, then push-snapped) into their receiving slots in their respective panel slots (before being screw-tightened from a screw coming from the perpendicular panel). The wedge-shaped fitting promotes “one direction insertion” and then ‘snaps into place’ in its panel slot due to the fitting's “substantially three layer (3-structure)” style shape. Each fitting has an inner (anchors inside the box) face section with a surface area slightly larger than its panel notch. This inner section is ultimately positioned inside the case, acting as an inner anchoring lip against the acrylic panel's inside wall (wall herein interchangeable with “panel, whether ceiling or side or floor). The fitting further comprises a tapered middle section that allows for easy sliding-insertion into the panel notch-slot, and then allows gentle pressing / pushing into place (until friction gives to the “snap” positioning). This seamless positioning is made possible due to the fitting's middle-section tapering. After insertion (smaller end of the wedge fitting is initially inserted into the wider end of the dovetail shaped slot), as the fitting is then pressed into its slot, the tapered middle structure is what allows the fitting to gently slide against the panel notch's edge until the fitting “snaps” into place when this friction is overcome. The fitting further comprises an outer face section which is substantially larger than its panel-slot. This fitting “outer face section” has the largest surface area of the fitting's three sections. Both the innermost and outermost “layers / structures” of the fitting function as “lip-rim anchors” to keep the fitting firmly in its panel-slot, while the trapezoidal “wedge shape” of the fitting allows efficient insertion and ultimately secure snap-placement.The remainder of the system comprises modular panels with optional cut-out slots, tabs, indentations and screw holes to build a wide variety of display cases.

The invention belongs to the field of airplane structure strength tests, and relates to an adjustable composite material single rib plate bending loading pressure head. The loading pressure head comprises a pressure head support (2), a wedge-shaped cushion block (3), a skin pressure roller (5) and a stringer pressure roller (7), the pressure head support (2) is provided with a stand column (21) and a track plate (22), the side edge, above the track plate (22), of the stand column (21) is provided with a notch for installing the wedge-shaped cushion block (3), the skin pressure roller (5) and the stringer pressure roller (7) are arranged in a containing groove of the track plate, and the skin pressure roller (5) penetrates through the track plate and then makes contact with the wedge-shaped cushion block (3). According to the application, the stringer flanges on the two sides of the web and the skin are separately pressed, so that accurate loading of bending pressure on the single rib plate with the stringer flanges and the skin inconsistent in thickness is realized.

The utility model discloses a safety protective fence for building construction. The fence has the advantages that when the fence is used, after the two stand columns are fixed, only the inserting blocks on the two sides of the fence plate need to be placed in the inserting plates, the inserting plates can move downwards under the self-weight effect of the fence plate, and when the inserting plates move downwards, the pressing plates can be driven to move downwards by means of the sliding strips and the connecting columns; when the pressing plate moves downwards, the wedge-shaped block on the linkage plate is inserted into the wedge-shaped groove in the inserting block through the groove by means of the connecting rod so as to limit the enclosure plate, and when the enclosure plate needs to be disassembled, the enclosure plate only needs to be lifted to enable the wedge-shaped block to be separated from the wedge-shaped groove, so that the enclosure plate can be conveniently disassembled. Limiting of the enclosure plate is achieved through the dead weight of the enclosure plate, the tedious operation of manually screwing bolts for limiting is omitted, and therefore the installation efficiency of the enclosure plate is higher, and the construction progress cannot be delayed.

The invention discloses a ring lock type scaffold and an erecting method, and relates to the technical field of scaffold engineering construction. In order to ensure that the scaffold can be continuously erected upwards under the condition that a vertical rod at the lower part of the scaffold is broken, the following scheme is provided: the scaffold comprises a conventional vertical rod, a plurality of groups of horizontal rods and a plurality of groups of disc buckle vertical rods, the bottom of the conventional vertical rod is fixed on the ground, the side end of the conventional vertical rod is fixed on a building structure, and a base is arranged at the bottom of the disc buckle vertical rod; a U-shaped clamping groove for mounting the horizontal rod is formed in the outer end part of the base; and the U-shaped clamping groove is provided with an opening side and an arc-shaped inner surface matched with the outer wall of the horizontal rod. A horizontal rod U-shaped end is arranged at the end of the horizontal rod, a lock pin inserting pin opening penetrating through the interior of the base is formed in the base, a wedge-shaped lock pin is slidably arranged in the lock pin inserting pin opening in a penetrating mode, and the wedge-shaped lock pin is in radial extrusion fit with the U-shaped end of the horizontal rod and the inner wall of the base. According to the scaffold, under the condition that the vertical rods on the lower portion of the scaffold are broken, the scaffold body can be continuously erected upwards, and the stability of the scaffold is ensured.

The invention relates to the field of contact lens manufacturing, in particular to contact lens automatic filling mold closing equipment which comprises a positioning carrier plate, a mold splitting assembly, a liquid injection assembly and a mold closing assembly, and the mold splitting assembly, the liquid injection assembly and the mold closing assembly are arranged above the positioning carrier plate. The first transfer device can drive the positioning carrier plate to move right below the mold splitting assembly, the liquid injection assembly and the mold closing assembly; the die splitting assembly comprises a plurality of groups of stripping clamping jaws, and each group of stripping clamping jaws are symmetrically arranged and can be close to or far away from each other; the sides, close to each other, of the two stripping clamping jaws in each set extend oppositely to form wedge-shaped protrusions, and a first inclined face and a second inclined face are formed above and below the extending direction of the protrusions respectively. And during stripping, the bulge is inserted between the upper die and the lower die. Die splitting of the upper die and the lower die of the die is divided into two independent actions of stripping and separation, so that the situation that the upper die deviates or falls off at the moment of separation in one-time die splitting is avoided.

The invention belongs to the technical field of aviation composite material component manufacturing, and relates to a honeycomb sandwich composite material wedge-shaped trailing edge part manufacturing method. Comprising the following steps: 1) manufacturing a skin and a rear beam; 2) preforming the honeycomb core; 3) gluing the honeycomb core and the skin; (4) the rear beam and the rear beam male die are fixed to a rear beam forming platform; (5) a limiting block is installed on the rear beam forming platform; (6) an adhesive film is pasted on the surface of the rear beam, and polystyrene foam is coated; (7) the skin honeycomb core assembly and the rear beam are glued and positioned to form a wedge-shaped trailing edge; 8) packaging the vacuum bag and installing a fixed clamping plate; (9) removing the vacuum bag for detection after vacuumizing and pre-compacting, and reassembling the skin honeycomb core assembly if the detection is not qualified; and (10) the step (8) is repeated for vacuum compaction and curing.

The invention discloses a test device for measuring the compression strength of a composite material plate, which comprises an upper box body and a lower box body, a guide column is arranged between the upper box body and the lower box body, an upper clamping assembly is arranged at the lower end of the upper box body, a lower clamping assembly is arranged at the upper end of the lower box body, and the upper clamping assembly and the lower clamping assembly have the same structure and opposite installation directions. The upper clamping assembly or the lower clamping assembly comprises two wedge-shaped clamping block units which are oppositely arranged, and the end part of the test piece is clamped between the two wedge-shaped clamping block units. The invention also discloses a test method for measuring the compression strength of the composite material plate. The test device can stably work for a long time in high and low temperature environments, meets the test requirements of a compression test, adopts a split design, is rapid in clamping, can effectively resist bending and torsional deformation, improves the test efficiency and accuracy, keeps reliable clamping all the time in the test process, and is simple in structure and convenient to operate. And the problem of clamping failure caused by thermal expansion and cold contraction is effectively solved.

The invention discloses a composite beam capable of enhancing the ultimate strength of an ultimate concrete structure. The span of the beam is measured, a bending moment graph of the beam is drawn, according to analysis of the bending moment graph, UHPC is selected for a pure bending section (the middle of the span) above a neutral axis of the beam, the upper half part of the beam is covered, and common concrete is used for the rest parts; half of the beam height is selected to use UHPC on the upper portion, and the structural ultimate strength of the composite beam can be improved; the FRP rib is used on the lower portion of the beam, the tensile property and ductility of the lower portion can be improved, a sleeve grouting anchorage device (the inner wall of a metal sleeve is provided with threads) and a wedge-shaped anchorage device (the clamping section is wrapped with a copper sleeve) are adopted, the anchoring reliability is ensured through the double effects of chemical bonding and mechanical meshing, and due to the fact that the FRP rib can be subjected to brittle failure and is preset to be in a super rib failure mode, the tensile strength and ductility of the lower portion can be improved. The problem of brittle failure of the FRP rib is solved. The beam is simple in design, convenient to construct, reasonable in stress, high in structural ultimate strength, high in reliability, wide in application range and material-saving.

A casing hanger apparatus includes an upper ring, a lower ring, and a packing element positioned between the upper ring and the lower ring. The packing element has an annular body with a wedge-shaped cross-sectional geometry. Bi-directional pressure intensification (BPI) pins are arranged around the casing hanger in an angularly spaced apart configuration, where the BPI pins extend axially from the upper ring through holes in the packing element to the lower ring. In some casing hanger apparatuses, a bushing member is positioned axially between the upper ring and the lower ring, where the BPI pins also extend axially through the bushing member.

The invention relates to a recoverable unlocking bracket for a large-aperture space remote sensing camera, which is characterized in that in a locking state, two explosive bolts respectively penetrate through central holes of an upper pressing block and a conical block and then are connected with an upper section and a lower section of a threaded connecting cylinder, and four wedge blocks are uniformly distributed along the periphery of the threaded connecting cylinder; two wedge-shaped grooves in the wedge block are matched with a first conical boss of the upper support and a second conical boss of the lower support respectively, an annular spring is arranged in a rectangular groove, a plate spring penetrates through a through hole of the wedge block and a rectangular hole of the upper pressing block, then the lower end of the plate spring is hooked on the annular groove of the lower support, and the upper end of the plate spring is fixed to the upper pressing block. And the explosive bolt is detonated and unlocked, the wedge-shaped groove is separated from the conical boss, the conical block is withdrawn, and the four wedge blocks are recovered together and clamp the threaded connecting cylinder. After unlocking, all the free structural parts in the support are restrained and recycled, the risk that the support is stuck due to irregular movement of the free structural parts or the free structural parts move to the outside of the support to become redundant objects is eliminated, and meanwhile the requirement for the large movement distance after the support is unlocked can be met.

The utility model discloses a sample tube fixing assembly of a flow cytometer, and relates to the technical field of structures of sample tube fixing assemblies, a vertical plate and a right holding block are fixedly arranged on the top surface of a machine table, an arc-shaped groove is formed in the left end face of the right holding block, a square rod penetrates through the vertical plate in a sliding manner, a left holding block is fixedly arranged at the right end part of the square rod, and the right end part of the left holding block is provided with an arc-shaped groove; an arc-shaped groove is formed in the right end face of the left enclasping block, the arc-shaped groove of the left enclasping block and the arc-shaped groove of the right enclasping block are opposite in the left-right direction, and a horizontal spring is fixedly arranged between the left end face of the left enclasping block and the vertical plate. The rod piece is sleeved with a vertical spring, the top end of the vertical spring is fixedly arranged on the bottom surface of the iron plate, the bottom end of the vertical spring is fixedly arranged on the top surface of the lifting plate, a wedge-shaped plate is fixedly arranged at the top of the rod piece, and the wedge-shaped face of the wedge-shaped plate makes contact with the inclined face of the square rod. The sample tube fixing device has the beneficial effects that the sample tube fixing time can be shortened, and the sample tube fixing efficiency is improved.

According to the precise displacement platform, due to the fact that the objective table is placed on the wedge-shaped table, and the length direction of the hinge shaft is in the second horizontal direction, the objective table slides on the wedge-shaped table when the linear driving mechanism drives the adjusting assembly to horizontally move in the first horizontal direction, and therefore the lifting function is achieved, due to the fact that the wedge-shaped table is hinged to the adjusting assembly through the hinge shaft, the inclination of the wedge-shaped table relative to the adjusting assembly can be changed, switching between a high transmission speed mode and a high precision mode can be achieved according to the inclination, and the high transmission speed mode and the high precision mode can be achieved through the device. The precise displacement platform is simpler in structure and convenient to operate.