356 results about "Transverse axis" patented technology

The invention relates to the technical field of aero-engine quality inspection, and discloses an aero-engine part machining quality detection method based on data management. The method comprises the following steps: collecting multi-source machining data of a part, wherein the multi-source machining data comprises dimensional tolerance, surface roughness and material hardness data; key quality features are extracted according to a design drawing, and the key quality features and the multi-source processing data are subjected to time sequence alignment according to process stages; a three-dimensional mass space model with the process stage as the horizontal axis, the key quality features as the longitudinal axis and the multi-source machining data as the depth axis is constructed, and a mass distribution thermodynamic diagram is generated; identifying an abnormal process region based on the thermodynamic diagram, extracting a corresponding data subset, inputting the data subset into the dynamic convolution kernel quality analysis network, and outputting a process abnormal probability value; when the probability value exceeds a threshold value, triggering cross-process correlation analysis, and fusing upstream and downstream process data to generate a composite quality feature vector; and an abnormal type is judged through a cascade classifier, and a compensation strategy library is called to generate a machining parameter adjustment instruction set.

A fixing tool is used for fixing a drainage tank, and the horizontal axis coordinate of the drainage tank is adjusted by transversely moving a first fixing piece. The vertical axis coordinate of the drainage groove is adjusted by vertically moving the second fixing piece; the third fixing piece stretches out and draws back in the longitudinal direction to adjust the longitudinal axis coordinates of the drainage groove, the fixing tool can accurately adjust the coordinates of the drainage groove, it is ensured that the drainage groove is kept in the vertical state, and the measuring precision is improved. And meanwhile, compared with a manual fixing mode, a tool fixing mode is adopted, so that the position of the flexible shaft in the track of the drainage channel is relatively fixed, and the friction force measurement precision can be further improved.

An improved cap rudder and a boat. The cap rudder (1) comprises a rudder shaft (10) and a cap plate (11) fixed to a lower end (104) of the rudder shaft, wherein a rudder shaft sleeve (12) is axially located between the cap plate (11) and an upper end (101) of the rudder shaft, the rudder shaft (10) is radially supported in the rudder shaft sleeve (12) by means of a first bearing, and a pair of coaxially arranged transverse shafts (13) are perpendicular to an axis of the rudder shaft (10), with one end of each transverse shaft (13) being fixed to an outer wall of the rudder shaft sleeve (12), and the other end of each transverse shaft (13) being a bearing connection end (132) connected to a second bearing (133). The transverse shafts of a rudder anchor and the rudder shaft sleeve form a cross-shaped structure, and the rudder shaft sleeve can rotate around the transverse shafts, so that the rudder angle of the cap rudder is changed, thereby realizing the adjustment and control of the trim of a hull.

An impact barrier system (1) for deployment to a support structure for protection from an impact event, including a barrier (9) with an impact side and a shielded side. The barrier (9) is formed from at least one barrier portion (10), formed between the impact side and the shielded side of the barrier. The barrier portion (10) including a plurality of barrier layers (36), each being substantially aligned with a barrier system plane XY, and having two opposed faces, respectively facing the impact side and shielded side. The faces have a transverse axis Z, orientated substantially orthogonally to the barrier system plane Z having an outer perimeter forming an edge or edges. At least two of the plurality of barrier layers (36) are; a) at least partially overlapped about said transverse axis Z, and b) flexible.

An organizer assembly for a butt closure includes a bracket assembly, the bracket assembly including a plurality of hinge assemblies. An organizer tray is rotatably connectable to the bracket assembly at one of the plurality of hinge assemblies. The organizer tray is rotatable between a first position and a second position aligned along the transverse axis. A basket extends along the longitudinal axis between an open first end and a closed second end and extending along the lateral axis between a first side and a second side. The basket includes a curved portion forming a nadir between the first side and the second side. An interior volume is defined between the first side, the second side, the first end, and the second end. A wall extends from the curved portion substantially along the transverse axis along a distance corresponding to the organizer tray along the transverse axis.

The multi-degree-of-freedom bionic bird flapping-wing aircraft comprises a flight assembly and a fuselage, and a driving assembly and a direction control assembly are arranged on the fuselage; a motor of the driving assembly drives a rotating shaft through a gear transmission mechanism. The flying assembly comprises wing modules which are symmetrically arranged and a linkage driving mechanism, and the linkage driving mechanism converts the rotating motion of the rotating shaft into vertical flapping of the wing modules and different folding angles of the wing modules; the direction control assembly comprises an empennage connected with the fuselage, an empennage steering device, an empennage lifting device and a wing twisting device; the empennage steering device drives the empennage to deflect around the vertical axis of the fuselage to adjust the flight direction of the aircraft; the empennage lifting device drives the empennage to deflect around the transverse axis of the fuselage to adjust the flight height of the aircraft; the wing twisting device drives the wing module to rotate around the longitudinal axis of the wing to adjust the pitch angle of the wing module. According to the invention, flapping folding and twisting can be realized, and a flying function which is extremely similar to that of a real bird is provided.

Walk-behind floor treatment machine comprising: a base portion provided with and supported by at least one rotatable work head for treating the floor, a handle portion for steering or guiding the machine along a working direction of travel and adapted to be pivotable with respect to the base portion, drive means for rotating the work head with respect to the base portion, floor-engaging wheel means for supporting the handle portion, the wheel means having a substantially transverse axis of rotation so as to permit travel in the working direction, the wheel means being coupled to the base portion by a linkage which permits vertical travel of the base portion and associated work head or heads with respect to the wheel means, but which provides transverse constraint to limit or prevent yawing of the base portion with respect to the wheel means, wherein a lower region of the handle portion is pivotably connected to the wheel means so that the handle portion may pivot through a generally vertical arc, and wherein a handle pivot lock mechanism is provided in which the adoption of a predetermined handle portion orientation permits one or more locking feature to act on one or more corresponding constraint feature so as to prevent pivoting movement of the handle portion with respect to the linkage, whereby tilting back of the locked handle portion causes a corresponding rise of the linkage and base portion with work head so as to lift them from the floor surface, wherein a squeegee suction device is provided for collecting and entraining liquid lifted from a floor surface over which the machine travels, the squeegee suction device being attached to the wheel means via one or more trailing arm which is attached at one end region to the squeegee device and at the opposite end region is pivotably attached to the wheel means for pivoting co-axially about the said transverse axis of rotation, the arrangement being such that the trailing arm and squeegee may pivot up or down about the transverse axis as they trail behind the treatment machine.

The invention discloses an aircraft surface waviness measurement and analysis method and system, and the method comprises the steps: scanning the surface of an aircraft according to a planned path through employing a three-coordinate measuring machine and a scanning probe, obtaining scanning data, and obtaining the scanning data for evaluation through employing a segmented scanning and segment-to-segment direct splicing mode for a hole, a pin and other structural parts; fitting based on scanning data to obtain a point deviation data set, calculating corresponding point arc length data based on the point deviation data and the point coordinate data on this basis, and drawing a graph by taking a horizontal axis as the point arc length data and a longitudinal axis as the point deviation data; and determining the surface waviness of the airplane by combining the derivative at the intersection point of the point deviation data curve and the transverse axis and the distance between the wave crest and the wave trough, thereby realizing the efficient and accurate measurement of cavities, welding seams and other obstacle structures on the outer surface of a large-scale airplane part or the whole machine and the accurate calculation of the waviness.

A device (1) for guiding and adjusting the alignment of a tape of material in transit along a production line comprising an internally hollow rotating idler roller (2) and kinematic connection means to allow said rotating idler roller (2) to perform, in addition to a first rotation (Ri) around its axis (X- X), a second rotation (R2) by a limited angle (a), around a transverse axis (Z-Z) orthogonal to a plane P passing through said central axis (Y-Y), said kinematic connection means being advantageously housed inside the cavity (7) of said rotating idler roller (2) so as to be interposed between said support element (6) and said rotating idler roller (2).

The invention provides a special-shaped test piece fatigue test loading device. The special-shaped test piece fatigue test loading device comprises an upper connector, a lower connector, a main shaft, a transverse shaft, a lower connector transverse shaft, a clamping plate, a bolt, a support and a clamping block. The test piece is connected through the main shaft and the two transverse shafts, and the support and the test piece are connected through the clamping plates and the bolts. The pull rods on the single-lug upper connector and the double-lug lower connector are clamped on an electro-hydraulic servo fatigue testing machine, and loading of a test piece is achieved through pulling and pressing of the testing machine on the lugs of the upper connector. The strain measuring device comprises a strain gauge and a signal transmission processing device, and the strain gauge is installed on a main examination part of the test piece according to test requirements. Through the fatigue test device, accurate load application of the special-shaped structural member is realized, and a fatigue test is completed.

The invention relates to an elevator, in particular for a motor vehicle, comprising at least one lane (2); two legs (4, 4 ') hinged to the at least one lane (2) and each leg (4, 4') consisting of a single arm; at least one actuator (18, 18 ') associated with each leg (4, 4') and configured to vary the inclination of each leg (4, 4 ') with respect to the horizontal so as to raise and lower the at least one lane (2); and a synchronous control unit of all the actuators (18, 18 '); characterized in that: the two legs (4, 4 ') hinged to the at least one lane (2) are arranged symmetrically with respect to the transverse median plane of the elevator; -the lower end of each leg (4, 4 ') is hinged to the base (8) in connection with a fixed transverse shaft (10) to be anchored to the floor; -the upper end of each leg (4, 4 ') is articulated to the respective lane (2) by connecting to a transverse axis (12, 12') which is connected to a trolley (14) sliding along the lane itself; the upper end of each supporting leg (4, 4 ') is hinged to two sliding frames (14); the two carriages (14) are connected to each other by a pair of flexible traction elements (22, 22 ', 22' '), each traction element being connected to the two carriages (14) at the ends and each traction element being returned by a respective transmission member (24, 24') idling mounted on the lane (2), all of which generally define a substantially closed ring-shaped structure such that, as the inclination of the legs (4, 4 ') varies, the traction elements (22, 22', 22 '') are driven by the respective transmission member (24, 24 '). Each lane (2) is translated longitudinally towards the legs that are at this time slightly inclined with respect to the horizontal plane.

The utility model belongs to the technical field of seats, and particularly relates to a vehicle seat headrest rotating and folding mechanism which comprises a headrest assembly, a supporting vertical pipe and a transverse shaft fixed at the upper end of the supporting vertical pipe, a box body is hinged on the transverse shaft, the headrest assembly is fixed on the box body, and a locking block with a locking groove is fixed on the transverse shaft in the box body. A middle shaft and a control shaft are sequentially arranged above the transverse shaft in the box body from bottom to top, the upper side of a cantilever hinged to the middle shaft is concave downwards to form a control groove, a locking block extending downwards is arranged on the lower side of the cantilever, an unlocking pawl is fixed to the control shaft, the locking block is clamped into the locking groove, and the unlocking pawl is clamped into the control groove. The rotating control shaft drives the unlocking pawl to rotate, the unlocking pawl drives the cantilever to rotate so as to enable the locking block to leave the locking groove to be unlocked, the headrest assembly is rotated to a set limiting angle, and the headrest assembly is turned to a reset position to be locked. The automobile seat has the advantages that after the headrest assembly is lowered, the sight of a driver is not affected, a seat is put down without mutual interference, and operation is convenient.

An absorbent article having a longitudinal axis and a transverse axis is provided. The article has a topsheet and backsheet, together forming a chassis that is symmetrical about the transverse axis. An absorbent core is disposed between the topsheet and the backsheet, with a perimeter of the chassis extending beyond the surface area of the core. The absorbent core is asymmetrical about the transverse axis. In one embodiment, less than 50% of the surface area of the absorbent article is mechanically compressed. In another embodiment, the absorbent article has an in-use flexibility of less than 170 mN, preferably less than 130 mN. In a further embodiment, the absorbent article has a stiffness measured in the core free area of less than 0.4 g*cm.

The invention relates to a motor vehicle (1) with a motor vehicle body (2) and with an underbody (3), wherein the motor vehicle body (2) has a left-side wheel housing (6) and a right-side wheel housing (6) in a front area (4) and a rear area (5), and wherein at least one of the wheel housings (6) has an air guide element (8) formed in the direction of travel (F) in front of a wheel (7) received in the wheel housing (6). According to the invention, in order to influence an airflow (LS), the air guide element (8) has a first element section (12) extending substantially along a transverse axis (Y) of the vehicle body (2), which has a second element section (13) of the air guide element (8) at its end (11) facing away from the wheel (7), wherein the second element section (12) extends substantially along a longitudinal axis (X) of the vehicle body (2) from the end (11) in the direction of a front (15) of the vehicle body (2).

A wishbone for a wheel suspension comprising a front body-side pivot bearing (2) and a rear body-side pivot bearing (3) and a wheel-side connection point, wherein the pivot bearings (2, 3) define a body-side pivot axis (23), and wherein a front wheel-side pivot bearing (10) and a rear wheel-side pivot bearing (11) are provided at the wheel-side connection point, wherein the front and the rear wheel-side pivot bearings (10, 11) define a wheel-side pivot axis (24), wherein the body-side pivot axis (23) runs parallel to the wheel-side pivot axis (24), characterized in that a front pivot bearing axis (5) of the front body-side pivot bearing (2) and a rear pivot bearing axis (6) of the rear body-side pivot bearing (3) are inclined relative to the body-side pivot axis (23).wherein the front pivot bearing axis (5) is inclined relative to the body-side pivot axis (23) by a first angle (30) with respect to a front vertical axis (25) passing through the center of the front body-side pivot bearing (2) and perpendicular to a principal extension plane defined by the body-side pivot axis (23) and the wheel-side attachment point, and the rear pivot bearing axis (6) is inclined relative to the body-side pivot axis (23) by a second angle (31) with respect to a rear vertical axis (26) passing through the center of the rear body-side pivot bearing (3), wherein the first angle (30) and the second angle (31) have the same magnitude,and wherein the front pivot bearing axis (5) is inclined relative to the body-side pivot axis (23) by a third angle with respect to a front transverse axis (27) extending in the main extension plane and perpendicular to the body-side pivot axis (23) through the center of the front body-side pivot bearing (2), and the rear pivot bearing axis (6) is inclined relative to the body-side pivot axis (23) by a fourth angle with respect to a rear transverse axis (28) extending through the center of the rear body-side pivot bearing, and wherein the third angle and the fourth angle have the same magnitude.

The invention provides a carrier attitude measurement method and system and an aircraft, the carrier attitude measurement system is used, the carrier attitude measurement system comprises: a first antenna module comprising a first main antenna and a first auxiliary antenna, the first main antenna and the first auxiliary antenna having an interval in a longitudinal axis direction of a carrier; the second antenna module comprises a second main antenna and a second auxiliary antenna, and the second main antenna and the second auxiliary antenna are spaced in the transverse axis direction of the carrier; the processing module is in communication connection with the first main antenna, the first auxiliary antenna, the second main antenna and the second auxiliary antenna and is used for analyzing and processing navigation satellite signals received by the first main antenna, the first auxiliary antenna, the second main antenna and the second auxiliary antenna; the attitude measurement method comprises the following steps: the processing module corrects the measurement result of the motion attitude of the carrier based on the first baseline attitude of the first antenna module and the second baseline attitude of the second antenna module. According to the carrier attitude measurement method, the measurement precision of the carrier attitude can be improved.

The present disclosure relates to a disposable sanitary article, which includes an absorbent core arranged between a top sheet and a back sheet, the top sheet and the back sheet providing an outer boundary region of the article surrounding the absorbent core, and the outer contour of the absorbent core is symmetrical about a longitudinal center line. The core includes a neck region, where the transverse width between left and right core edge lines is less than the transverse width of the core in front of the neck region and the transverse width behind the neck region. The article also includes at least one asymmetric wing viewed along any transverse axis, the asymmetric wing including an outer edge extending in an outward direction from the outer periphery of the absorbent sanitary article, and wherein the at least one asymmetric wing outer edge is connected to the outer periphery of the absorbent sanitary article at a wing joint line J w The outer edge of the at least one asymmetric wing includes a front wing distance point D f The distance between the rear wing and point D r , where the wing distance point is in the outer lateral direction from the joint line J w The lateral distance J1 is 3 mm, and the front wing is at a distance from point D. f A first longitudinal distance D1 of 5-30 mm is separated from the neck in the rearward longitudinal direction.

The invention relates to a construction crane (1) that is portable and movable when loaded, referred to as the crane (1), comprising a chassis (2, 3) on which four wheels (230, 240, 330, 340) are mounted, at least two of which are pivotable, a mast (4) whose base is pivotably mounted on the chassis, the mast being pivotable, in a median longitudinal plane of the crane, about a transverse axis, a boom (6) attached to the head of the mast, the boom being pivotable, relative to the head of the mast, about a transverse axis, and slidable, on the head of the mast along a sliding axis included in the median longitudinal plane of the crane, and which can be adjusted by pivoting the boom. The boom is suitable for receiving a gripping means (7) for gripping a load to be moved (16), or force transmission means (8) intended to support, at least in part, a load to be moved and / or a lifting means (9) for lifting the load to be moved. The crane comprises an actuator (10) arranged to pivot the mast so as to support a distal end of the boom in a cantilevered manner with respect to the chassis, a base of the actuator being pivotably mounted on the chassis so as to pivot about a transverse axis distinct from the transverse axis about which the mast is pivotable, a head of the actuator being pivotably mounted so as to pivot about a transverse axis on an upper quarter of the mast located on the same side of the mast as the head, the actuator being pivotable, relative to the mast and the chassis, in the median longitudinal plane of the crane.

The invention relates to a surface cleaning head (100) for a surface cleaning device (G1 to G9) for cleaning a surface (F), comprising a support structure (110) extending along a vertical axis (Z), a transverse axis (Y), and a longitudinal axis (L), a tool assembly (300) with at least one disc tool (311) which, during operation of the surface cleaning head (100), rests on the surface (F) to be cleaned along the vertical axis (Z) and is rotatably mounted on the support structure (110) to perform a rotary tool movement about a vertical axis of rotation (D1) extending along, preferably parallel to, the vertical axis (Z), and a gear assembly (1700) configured to transmit a drive movement of a drive motor (320) of the surface cleaning device (G1 to G9) to the disc tool (311), wherein the gear assembly (1700) includes a drive wheel (1710) connected to the drive motor (320). or is connectable,and has a driven wheel (1720) which is operatively connected to the drive wheel (1710) at least indirectly in a force- and motion-transmitting manner, and wherein the driven wheel (1720) is formed by a section (3111) of the disc tool (311).

The utility model discloses a mine cable laying support, and mainly relates to the field of mine electric power safety facilities. Comprising a rectangular opening frame, a top sealing frame edge is arranged at the opening position of the opening frame, two V-shaped side wheel shafts are fixed in the opening frame, the side wheel shafts are rotationally connected with side supporting wheels in a sleeved mode, a mounting beam is arranged below the opening frame, the two ends of the mounting beam are hinged to the bottoms of the two sides of the opening frame respectively, and the two ends of the mounting beam are provided with extending beams extending in the reverse direction respectively. A transverse shaft is rotationally connected to the outer end of the extension beam, a swing plate is fixed to the inner end of the transverse shaft, a positioning screw penetrates through the swing plate, the top end of the positioning screw is hinged to the same side of the middle of the opening frame, an adjusting knob in threaded connection with the positioning screw is arranged on the positioning screw, and the adjusting knob is rotationally connected with the swing plate. The beneficial effects of the utility model lie in that the cable supporting device adapts to the trend of a cable on a slope surface, not only meets laying requirements, but also has a supporting function, protects the cable in good condition, and improves electricity utilization safety.

Valve assembly (10) comprising a one-piece first housing part (30) with a first and a second flat contact surface (31; 32), wherein the first and the second contact surfaces (31; 32) are arranged parallel to each other at a distance from each other by a disk width (33), pointing away from each other and oriented perpendicular to a transverse axis (12), wherein a main valve (70) is linearly movably received in the first housing part (30) parallel to a longitudinal axis (11), the longitudinal axis (11) being oriented perpendicular to the transverse axis (12), wherein the first housing part (30) has two first, two second, one third and one fourth connection point (21; 22; 23; 24), wherein the first to fourth connection points (21; 22; 23; 24) are fluidically connectable to each other depending on the position of the main valve (70), wherein the first and the second connection points (21; 22) are each two mouth openings (35;36) are formed, which are arranged parallel to the transverse axis (12) in alignment in the first and second contact surfaces (31; 32), wherein a quick-coupling device (140) is received in the first housing part (30) at the third and fourth connection points (23; 24), wherein the quick-coupling devices (140) each have a separate coupling bushing (141) which is movable parallel to a vertical axis (13), wherein the vertical axis (13) is aligned perpendicular to the longitudinal and transverse axes (11; 12), wherein the coupling bushings (141) are located between the first and second contact surfaces (31;32) are arranged, characterized in that the first housing part (30) has at least one actuation chamber (37) extending parallel to the longitudinal axis (11), in which at least one actuation axis (143) is rotatably received, wherein the at least one actuation axis (143) is each provided with at least one actuation cam (144), wherein both coupling bushings (141) can be brought into contact with an associated actuation cam (144), wherein the at least one actuation chamber (37) is arranged off-center between the first and the second contact surfaces (31; 32) in the direction of the transverse axis (12) to the first contact surface (31).

A motor vehicle wheel suspension system comprising, on each side of a vehicle chassis (2), a suspension arm (8) arranged substantially along the longitudinal direction of the vehicle, comprising at one end a pivot (6) connected to the chassis having a transverse axis, at the other end (10) a suspension spring (12) connected to this chassis, and comprising between the two ends a wheel hub support (28) equipped with a brake (34), the suspension arm (8) comprising two parts (20, 22) connected to each other by a joint (24) having a transverse axis, and a locking mechanism (26) for this joint (24) in several angular positions, the wheel hub (28) being on the part of the arm (22) which, during braking of the wheel (30), applies a reaction torque to it which tends to lower the joint (24). Figure 1

Front unit (10) for a touring binding, comprising: two lateral bearing sections (16a, 16b) which are arranged on a ski transverse axis running substantially orthogonal to a ski longitudinal axis and parallel to a ski plane and which are designed to engage lateral counter bearing sections (110) of a ski boot (100) in a closed position of the front unit (10) in order to hold the ski boot (100) pivotably about the ski transverse axis on the front unit (10), and a longitudinal positioning section (40) on which the ski boot (100) can be supported in an entry position such that the counter bearing sections (110) are positioned in an engagement position relative to the bearing sections (16a, 16b) with respect to their position along the longitudinal axis of the ski, and an actuating arrangement (26, 28) which is designed to move the front unit (10) from the open position to the closed position when actuated by a user and thereby move the bearing sections (16a, 16b) towards each other, wherein the front unit (10) is adjustable between an open position in which the bearing sections (16a, 16b) and the counter bearing sections (110) are disengaged, and the closed position in which the bearing sections (16a, 16b) and the counter bearing sections (110) are engaged, and wherein the longitudinal positioning section (40) is fixed in the open position of the front unit (10) relative to the bearing sections (16a, 16b) and is movable in the closed position of the front unit (10) relative to the bearing sections (16a, 16b), characterized by the fact that The actuating arrangement (26, 28) comprises an actuating lever (26) on which a detent pin (27) is arranged, which is designed to engage in a corresponding detent notch (48) arranged on the longitudinal positioning section (40) in the open position of the front unit (10) in order to lock the longitudinal positioning section (40) in the first position in the open position of the front unit (10).

A movable contact (20) is proposed for an electrical current interruption device (50), comprising: - a first conducting knife (1) and a second conducting knife (2), extending from parallel planes (P1,P2) separated by a distance between them, the conducting knives (1,2) being rotationally linked about a common axis of rotation (R), - a first and second spacer (3,4) configured to maintain a minimum distance between the first knife (1) and the second knife (2), wherein a cross-section (S1,S2) of each knife (1,2) is shaped to: - have an area equal to the area of ​​a reference rectangular cross-section (S1',S2') of the same length (a), and - have a second moment of area greater than the second moment of area of ​​the reference cross-section (S1',S2'), the second moment of area being determined with respect to an axis parallel to the transverse axis (T1,T2) of the knives (1,2). Figure of the abstract: Figure 3

The present invention relates to the technical field of steam seal body processing equipment, and discloses a steam seal body bevel processing tool, including a fixing mechanism, a tilting mechanism and a rotating mechanism; the fixing mechanism includes a chassis, a positioning key is provided at the bottom of the chassis, a column one is welded to one end of the top of the chassis, a pressure cover one is fixed to the top of the column one by screws, a tensioning frame is provided at the end of the top of the chassis away from the column one, the tilting mechanism includes a tray, a transverse axis three, a transverse axis two and a transverse axis one are respectively welded on the tray, a threaded jack is provided at the bottom of the transverse axis three, a threaded rod is provided between the tensioning frame and the transverse axis two, and a turntable is provided on the top of the tray. The steam seal body bevel processing tool can be installed to process exhaust grooves for steam seal bodies within the size range of the turntable, and has strong versatility, solving the problem of "annular bevel processing that is not perpendicular to any three-dimensional vector axis" that cannot be achieved by general-purpose machine tools on the market, and can replace extremely expensive large five-axis machine tools.

A fin (10) for a water sports device (30), in particular for a kiteboard, is described, comprising a mounting section (11) aligned in a longitudinal axis (x) of the fin (10), with which the fin (10) can be attached to the water sports device (30), a free end section (12) spaced apart from the mounting section (11) in a vertical axis (z) of the fin (10), and a fin body (13) extending between the mounting section (11) and the free end section (12), which includes a leading edge (14) and a trailing edge (15) as well as a curved wall section (20) extending in the direction of a transverse axis (y), wherein a flank inclination angle (α, α1, α2) exists between a plane (z') extending parallel to the vertical axis (z) through a lower end (21) of the curved wall section (20) and the facing free end section. (12) is spanned.The invention was based on the objective of developing a fin (10) that could have a particularly large influence on the handling characteristics of the water sports equipment (30). This objective is achieved by dimensioning a front flank angle (α1) adjacent to the leading edge (14) differently from a rear flank angle (α2) adjacent to the trailing edge (15).

The present invention relates to a fluid energy extraction device, comprising a base member, a rudder plate, a cross frame, a first plate, a second plate and an impeller; the rudder plates are arranged on both sides of the base member; the first plate and the second plate are arranged between the rudder plates to form a trumpet-shaped structure; the second plate is pivotally connected to the base member, and the first plate is pivotally connected to the cross frame; the impeller comprises a transverse axis and blades, and the blades comprise a first surface and a second surface; the impeller is transversely arranged between the two rudder plates, and its two ends respectively extend out of the corresponding rudder plates; the impeller part is located in the small mouth side of the trumpet-shaped structure, and the surfaces of the blades located therein facing the large mouth side of the trumpet-shaped structure are all the first surfaces; the device adopts a structure of two seesaws, which can increase the flow velocity of the fluid, gather its energy, and improve the efficiency of energy extraction; at the same time, when the fluid flow velocity is relatively large, the two seesaw structures will undergo pivoting motion, reducing the impact of the high-flow velocity fluid on the entire structure, thereby improving the service life and safety of the device.

The invention belongs to the technical field of aviation aircrafts, and particularly relates to a pre-cooling heat exchange device and an aircraft. The device comprises a base and a plurality of rotating modules, wherein a fixing piece is arranged in the transverse axis direction of the base; each rotating module comprises a supporting outer ring, a supporting inner ring and a plurality of pre-cooling heat exchange pieces arranged between the supporting outer ring and the supporting inner ring, the supporting inner ring is arranged on the fixing piece in a sleeving mode, and the width of the section, in the radial direction of the supporting inner ring, of each pre-cooling heat exchange piece is smaller than the distance between every two adjacent pre-cooling heat exchange pieces; a fluid channel is arranged in the supporting outer ring, the supporting inner ring and the pre-cooling heat exchange piece, an opening for cooling fluid to flow in and / or flow out is formed in the supporting outer ring, and the opening is communicated with the fluid channel; when the pre-cooling heat exchange device is in an initial mode, the included angle between the corresponding single pre-cooling heat exchange pieces in every two adjacent rotating modules is 0 degree. The supporting outer ring is driven by external force to rotate so as to drive the pre-cooling heat exchange piece to rotate, and the pre-cooling heat exchange device is adjusted to be in different modes from the initial mode. Therefore, the device is simple in structure, the heat exchange mode can be matched with the flight speed with low machining cost, and the pressure loss can be close to zero.

The invention relates to the field of unmanned aerial vehicle nest mounting brackets suitable for iron towers, and discloses an unmanned aerial vehicle nest windproof stabilizing bracket suitable for iron towers, which comprises a nest top plate and a bottom frame plate which are distributed up and down in parallel at intervals, and the bottom frame plate is used for being connected to the iron tower; the elastic buffering windproof structure is arranged between the machine nest top plate and the bottom frame plate; the bottom frame plate is in a hollow shape, two sets of parallel and spaced bidirectional threaded lead screws are rotationally installed in the bottom frame plate, each set of bidirectional threaded lead screw is sleeved with two sets of displacement blocks in a threaded mode, and the two sets of displacement blocks can transversely move in the opposite direction along transverse shafts of the bidirectional threaded lead screws; the hoop structures are arranged at the bottom ends of the displacement blocks; the unmanned aerial vehicle nest windproof stabilizing support suitable for the iron tower is provided.

The present invention relates to a picking device (1) for picking at least one object (4), comprising a support structure, a movable load handling manipulator (2) arranged on the support structure, a handling element (3) arranged on the load handling manipulator (2) for handling the object (4), and a control unit (5) for controlling the load handling manipulator (2) and the handling element (3), wherein the handling element (3) has a vertically displaceable contact element (6) which can be applied to a front side (4-1) of an object (4) facing the handling element (3) and is configured to displace the front side (4-1) of the object (4) along a vertical object axis (8) in order to create a gap (9) below the front side (4-1) of the object (4), wherein the handling element (3) has two displaceable support elements (10, 10-1, 10-2).which are displaceable along a longitudinal axis (11) and along a transverse axis (12), wherein the displaceable support elements (10, 10-1, 10-2) can be attached to a bottom surface (4-2) of the object (4) through the gap (9) created below the front surface (4-1) of the object (4) in order to receive the object (4). The support elements (10, 10-1, 10-2) each have at least two spaced-apart fixing elements (13, 13-1, 13-2, 13-3, 13-4) that can be switched between a fixed state and a non-fixed state. The control (5) is configured to switch one fixing element (13, 13-1, 13-2, 13-3, 13-4) of the two support elements (10, 10-1, 10-2) into the fixed state during a rotation step and to cause a synchronous displacement of the two support elements (10, 10-1, 10-2) along the longitudinal axis (11) and transverse axis (12) in order to achieve a rotation of the object (4) about the vertical object axis (8).