153 results about "Short axis" patented technology

The invention belongs to the field of cable eccentricity detection, and particularly relates to a cable eccentricity detection method and system based on X rays. The method comprises the following steps: calculating a gradient magnitude diagram and a gradient direction diagram through an X-ray image of a cable, screening a point with the local maximum gradient magnitude and low neighborhood divergence as a contour starting point, performing contour tracking to generate a contour point set, and selecting a next contour point based on a tangential prediction direction; performing ellipse fitting on the contour point set to obtain a geometric center, long and short axis parameters and a root-mean-square error of a fitting ellipse, dividing the fitting ellipse into an inner candidate ellipse and an outer candidate ellipse according to a long axis, and matching the inner candidate ellipse meeting the condition for each outer candidate ellipse; and screening out an outer candidate ellipse and an inner candidate ellipse which meet conditions from the candidate pairs, and calculating the eccentricity of the cable to be measured based on geometric center coordinates of the outer candidate ellipse and the inner candidate ellipse. According to the invention, the accuracy and reliability of cable eccentricity measurement results can be improved.

The invention provides an ICL postoperative arch height prediction and adjustment method and device, and the method comprises the steps: a data obtaining step: obtaining eye anatomical data of a patient, including the diameters of a short axis and a long axis of a ciliary sulcus; acquiring state data of the current implanted ICL, wherein the state data comprises a nominal size and a rotation angle in an eye; a geometric modeling and calculation step: establishing a two-dimensional geometric model of the ICL in the elliptical ciliary sulcus based on the nominal size of the ICL and the diameters of the long and short axes of the ciliary sulcus, calculating the diagonal length limited by four supporting leg points of the ICL on the model according to the rotation angle of the ICL in the eye, and further calculating the theoretical geometric arch height; and an adjustment scheme generation step: on the basis of the calculated theoretical geometric arch height, generating at least one secondary operation adjustment scheme for adjusting the actual postoperative arch height to be within a clinical ideal range, the adjustment scheme comprising rotating the current ICL to a new angle or replacing the current ICL with another ICL with a different size.

The utility model relates to the field of medical instruments, in particular to a jaw cyst windowing and pressure reducing device. The device comprises a guide part, a connecting part and a base which are sequentially arranged from top to bottom. And the small-diameter section of the guide part is positioned at the upper part. The connecting part is a cylinder, and the diameter of the connecting part is smaller than that of the bottom of the guide part. The short axis size of the base is larger than the diameter size of the bottom of the guide part. The bottom of the base is provided with a through hole penetrating to the position above the guide part, and a drainage channel is formed. The springback characteristic of soft tissue in the bag cavity is utilized, so that the guide part and the connecting part can be fixed in the bag cavity and cannot fall off; meanwhile, through the elliptic cylindrical base, the base is effectively prevented from entering the bag cavity, the shape of the vestibular groove is met, and the wearing is free of foreign body sensation and more comfortable.

The invention discloses a rock fracture closing simulation method, system and equipment and a storage medium, firstly, a two-dimensional equivalent model is established based on a fracture sample, a fracture in the two-dimensional equivalent model is equivalent to an ellipse-like section, then a plurality of sampling points are arranged on the upper boundary and the lower boundary of the fracture, a load is loaded, and then the fracture closing simulation model is established based on the displacement of the sampling points on the upper boundary and the lower boundary of the fracture before and after the load is loaded. The length change of the fracture under each load step length is calculated, the fracture area is calculated, finally, the average opening degree of short axes of all the fractures is calculated, and whether all the fractures are completely closed or not is judged; if not, crack equivalent parameters are calculated and updated, and the steps are repeatedly executed after loads are increased; on the basis of a numerical simulation method, the distribution and stress deformation conditions of the fracture in the rock are simulated, the length changes of the long axis and the short axis of the fracture are fully considered, the fracture region area is combined, the stress-strain process of the fracture is more accurately simulated, the fracture closing state is effectively evaluated, and the accuracy of a simulation result is improved.

The utility model relates to a splicing type pneumatic conveying pipeline elbow which comprises an inlet flange, an inlet straight pipe, an inlet transition pipe, an impact elbow, a wear-resisting elbow, an outlet transition pipe, an outlet straight pipe and an outlet flange which are sequentially connected, and a fastening hoop assembly is arranged outside a connecting port of the impact elbow and the wear-resisting elbow. The section of each of the impact elbow and the wear-resistant elbow is a special-shaped surface consisting of a semicircular structure at the upper half part and a semi-elliptical structure at the lower half part, the radius of the semicircular structure is equal to half of the length of the short axis of the semi-elliptical structure, and the ratio of the length of the long axis of the semi-elliptical structure to the radius of the semicircular structure is greater than 1.6. By arranging the special-shaped section form of the elbow, a vortex is formed when gas flows through the inlet transition pipe, and the vortex can collide with incoming flow, so that the speed of fluid is reduced, the impact force of materials on the turning part of the elbow is relieved, and the abrasion degree of the inner wall of the elbow is reduced; and the pipe section can be partially replaced when being partially damaged, so that the comprehensive service life of the elbow pipe is prolonged.

The invention relates to the technical field of harmonic reducer wave generators, and discloses a harmonic reducer wave generator capable of bearing axial load, which comprises a rigid gear, a flexible gear and a wave generator, the wave generator is arranged in the flexible gear, the flexible gear is arranged in the rigid gear, the inner ring of the rigid gear is meshed with the outer ring of the flexible gear through teeth, and the inner ring of the rigid gear is meshed with the outer ring of the flexible gear. The long shaft part of the flexible gear is in contact with the rigid gear, the short shaft part of the flexible gear does not participate in action, the wave generator comprises an oval cam and a flexible bearing, and the oval cam is arranged in the flexible bearing; the flexible bearing comprises a bearing inner ring, a bearing outer ring and balls, the bearing inner ring and the bearing outer ring are each provided with two channels, the distance between the two channels of the inner ring is smaller than that between the two channels of the outer ring, and when the multiple balls are arranged in the corresponding channels in the bearing inner ring and the bearing outer ring, the contact points of the balls and the outer ring and the contact points of the balls and the inner ring are connected through the connecting line of the centers of the balls. And a certain included angle is formed between the bearing and the radial direction of the bearing and is generally about 15 degrees. The flexible bearing can bear a certain axial load, the bearing capacity of the speed reducer can be greatly improved, the precision service life of the speed reducer can be greatly prolonged, the application field and range of the speed reducer are expanded, and the flexible bearing is simple in structure and convenient to install.

The utility model discloses an ultra-short-axis composite bow which comprises a bow body, a bow piece, a tension adjusting assembly, a pulley block and a bow pushing indicating structure, and aims to solve the problem that in the prior art, a common shooting composite bow is difficult to carry on an original field competition field to be frequently transferred due to the fact that the size is large and the weight is heavy when the common shooting composite bow is used for an original field competition. Compared with a common composite bow with double-side bow pieces, the composite bow with the ultra-short shaft is designed, the design of the single-side bow pieces is adopted, the size of the whole bow is greatly reduced, the weight of the whole bow is reduced, the composite bow is particularly suitable for being carried and moved on an original field competition field, physical output is greatly reduced, and furthermore, by means of a pushing indication structure, the bow can be pushed conveniently and rapidly when pushed. When the pressures on the two sides of the bow handle are the same, corresponding indication is given, so that a green hand can be trained in the early stage conveniently, and the problem that bow pushing is not correct due to the fact that the pressures on the two sides are not uniform during bow pushing is solved.

An inkjet printer is described. The inkjet printer has a substrate holder assembly that includes a base member having a long axis in a first direction and a short axis in a second direction perpendicular to the first direction; a contact member coupled to the base member, the contact member having a long axis in the first direction and a short axis in the second direction; a holder carriage coupled to the base member; a linear extender coupled between the base member and the contact member and extending in a third direction intersecting with the first direction and the second direction from the base member toward the contact member; and a flex member coupled to the base member, extending in the second direction between the linear extender and the contact member, and having a flex direction in a direction perpendicular to the first direction and the second direction.

An illumination optical system is configured to convert an intensity distribution of incident light in a long axis direction from a Gaussian distribution, to thereby bring an intensity distribution of a shaped beam on a modulation surface of an optical modulator in the long axis direction into a top hat distribution, and to guide the incident light to the optical modulator as parallel light in the long axis direction and as convergent light in the short axis direction. A short axis side light shielding part is disposed at a condensing position on a short axis side of a modulated beam which is emitted from the optical modulator and is convergent light on a short axis side and blocks a non-zero-order diffracted beam on the short axis side of the modulated beam.

The invention relates to the field of mechanical connecting pieces, and discloses a self-locking screw capable of quantifying pre-tightening force and a using method thereof.The self-locking screw capable of quantifying the pre-tightening force comprises a mounting base, strip-shaped holes are symmetrically formed in one side of the mounting base, a screw body is in threaded connection with the interior of the mounting base, a mounting hole is formed in one side of the screw body, and the mounting hole is in threaded connection with the mounting base. A mounting hole is formed in one side of the screw body, a through hole is formed in the other side of the screw body, a spring pin is mounted in the mounting hole of the screw body, a chamfer is arranged at the end of the spring pin, and the through hole is in an oval shape when the screw body is not locked. When the screw body is screwed into the mounting seat and a certain pre-tightening force is achieved, the original oval through hole is changed into a round through hole, the end of the spring pin can penetrate through the round through hole under the action of elastic potential energy of the spring pin, the screw body is prevented from loosening, and therefore the screw body can be screwed into the mounting seat by adjusting the sizes of long and short axes of the spring pin and the through hole. Therefore, the device can adapt to application occasions with different pre-tightening forces.

The invention relates to the technical field of tapping equipment, and particularly discloses tapping equipment for a blast furnace coal gun external thread connecting piece, which comprises a rack, a processing bin is fixedly connected to the left side of the top of the rack, a tapping threading die is mounted on the side surface of the processing bin, a workpiece frame is arranged on the right side of the top of the rack, and a blanking frame is inserted into the top of the workpiece frame; the tapping equipment for the external thread connecting piece further comprises a clamping assembly arranged on the inner side of the workpiece frame, the clamping assembly comprises a mounting frame fixedly connected to the inner side of the workpiece frame, a clamping part is arranged on the left side of the mounting frame, and the supporting assembly is arranged on the inner side of the workpiece frame. And the deformation of the round pipe part with a thin pipe wall is prevented, so that the out-of-round of the pipe caused by overlarge radial force during clamping, tooth missing of a sleeved thread in the long axis direction of an ellipse and over-shallow in the short axis direction are avoided, and the machining quality of the round pipe part is improved.

The purpose of the present invention is to provide a composite film having a high coverage of a nanocrystalline plate and a high amount of light absorption per unit thickness. A composite film (10) including a nanocrystalline plate (11) having a composite layer structure in which a first layer containing a cation A to which ligands coordinate and a second layer containing a cation B and an anion X are alternately stacked, wherein the aspect ratio (L / S or S / L) that is a rectangular shape feature amount in a direction intersecting the stacking direction of the composite layer structure is 0.2-5, when the thickness of the nanocrystalline plate is denoted by t and the length of the short axis intersecting the stacking direction of the nanocrystalline plate is denoted by S, t and S satisfies S / t ≥ 3, and a variance σn of the number of stacked layers in the nanocrystalline plate is 0.7 or less.

The utility model discloses a rockfall protection shed frame which comprises an oval skirt edge beam, a vertebra beam is arranged in the long axis direction of a top cover, the middle of the vertebra beam protrudes upwards, and the two ends of the vertebra beam are fixedly connected with the skirt edge beam. A plurality of rib beams are arranged in the short axis direction of the top cover, the middle of each rib beam is fixedly connected with the vertebra beam, and the two ends of each rib beam are fixedly connected with the skirt beams; the skirt edge beams, the vertebra beams and the multiple sets of rib beams form a plurality of arc-shaped installation faces, and each arc-shaped installation face is fixedly provided with a shield plate. A plurality of stand columns are fixed to the bottoms of the skirt beams. First force unloading is achieved through the shield plate, second force unloading is achieved through deformation of the reinforcing mesh and the bubble concrete layer of the shield plate, third force unloading is achieved through cooperation of the rib beams and the insertion bolts, fourth force unloading is achieved through cooperation of the rib beams, the vertebra beams and the skirt edges, and fifth force unloading is achieved through the stand columns. The utility model has the advantages of better structural strength, capability of realizing multi-time grading unloading and stronger impact resistance.

The invention discloses a clamp head mechanism and a bipolar electric treatment device. The bipolar electric treatment device comprises the clamp head mechanism (10), a conductive traction part (30), an electric connection part and an operation part, the clamp head mechanism (10) comprises a clamp cup assembly (1) and a clamp head assembly (2), wherein the clamp cup assembly (1) comprises a first clamp cup (11) and a second clamp cup (12) which are oppositely arranged; the clamp cup seat (2) is configured to support the clamp cup assembly (1); the insulation supporting piece (3) is arranged between the first clamp cup (11) and the second clamp cup (12), and when the first clamp cup (11) and the second clamp cup (12) execute closing operation, the insulation supporting piece (3) separates the first clamp cup (11) from the second clamp cup (12). Wherein, on the same projection plane, the projection part of the insulating support member (3) along the first direction covers the projection of the first clamp cup (11) and / or the second clamp cup (12) along the first direction, and the first direction is perpendicular to the short axis direction and the long axis direction of the first clamp cup (11) and / or the second clamp cup (12).

The utility model provides an MEMS (Micro Electro Mechanical System) micromirror structure and an MEMS micromirror integrated product. The MEMS micromirror structure comprises a reflecting mirror; the frame is used for bearing the reflecting mirror and comprises a fixed structure and a movable frame; the first rotating shaft structure is used for connecting the reflecting mirror and the movable frame and supporting the reflecting mirror to perform torsional motion by taking the first rotating shaft structure as an axis; the second rotating shaft structure is used for connecting the movable frame and the fixed structure and supporting the movable frame to drive the reflecting mirror to perform twisting motion by taking the second rotating shaft structure as an axis; wherein the first rotating shaft structure comprises a beam part main body and a transition connecting end connected between the beam part main body and the reflecting mirror, the width of the transition connecting end is not smaller than one half of the short axis length of the reflecting mirror, and the width of the beam part main body is not smaller than the width of the transition connecting end; and the reinforcing structure is positioned on the back surfaces of the reflecting mirror and the transition structure and is a closed structure formed by connecting a straight-line section and a curved-line section end to end.

The invention relates to an industrial CT scanning geometric structure detection result evaluation and process parameter setting method. The detection result evaluation method comprises the steps that a uniform blank is adopted to manufacture a test block with the diameter being D; the test block and the detected sample are both placed on a rotary table, the test block is located on the extension of the long edge of the scanning section face of the detected sample, an X-ray machine is started to conduct CT scanning on the detected sample and the test block, and a CT image is obtained; in a CT image, an image of an area where a test block is located is intercepted, a gray threshold is set, threshold segmentation processing is carried out on the intercepted image, edge contour lines of the threshold segmentation image of the test block are extracted, ellipse fitting is carried out on position information of all the contour lines, an optimal fitting result is calculated, and the lengths of a long axis and a short axis of an ellipse are obtained. Dividing the length of the long axis of the ellipse by the length of the short axis to obtain the shape degree value of the ellipse; if the shape degree value of the ellipse is smaller than a set shape degree threshold value, it is judged that the geometric structure precision of the current CT detection result meets the requirement.

The present application belongs to the field of cable eccentricity detection, and particularly relates to a cable eccentricity detection method and system based on X-ray. The method calculates gradient amplitude graph and gradient direction graph through X-ray image of the cable, screens points with local maximum gradient amplitude and low neighborhood divergence as contour starting points, generates contour point set through contour tracking, and selects next contour point based on tangent prediction direction. Then, the contour point set is subjected to ellipse fitting, the geometric center, long and short axis parameters and root mean square error of the fitted ellipse are obtained, the fitted ellipse is divided into inner and outer candidate ellipses according to the long axis, and each outer candidate ellipse is paired with the inner candidate ellipse meeting the condition. The outer candidate ellipse and the inner candidate ellipse meeting the condition are screened from the candidate pair, and the eccentricity of the cable to be measured is calculated based on the geometric center coordinates of the two. The present application can improve the accuracy and reliability of the cable eccentricity measurement result.

To provide a toothbrush capable of cleaning both a tooth surface and a space (dental neck, interdental part) by being bent in both directions of a long axis direction and a short axis direction of a head part.SOLUTION: A head part 10 of a toothbrush 100 includes: a first region R1 disposed with a plurality of first bristle bundles 13A comprising first bristles whose tips have a first tip diameter; and a second region R2 disposed with a plurality of second bristle bundles 13B comprising second bristles whose tips have a second tip diameter. The first region has a cross shape extending along both directions of a long axis direction and a short axis direction of the head part, and the second region is divided into four or more regions by the cross-shaped first region.SELECTED DRAWING: Figure 9

The utility model discloses a loudspeaker digital beam array module, and belongs to the technical field of loudspeakers. The loudspeaker comprises a plurality of loudspeaker digital wave beam dot matrix modules which are arranged in an array along the long axis and the short axis of the loudspeaker digital wave beam dot matrix modules; each loudspeaker digital beam dot matrix module at least comprises a sound post; the top and the bottom of the sound post are respectively provided with at least three grooves, and the side wall of the sound post is provided with hole sites matched with the grooves; the plug-in assembly is arranged in the groove, and the connecting assembly is connected with the loudspeaker digital beam dot matrix modules which are arranged in an array mode. The loudspeaker digital beam dot matrix modules are arranged in the long axis direction and the short axis direction in an array mode, and therefore multi-dimensional sound coverage and directivity control can be achieved. And the plug-in component and the connecting component improve the flexibility and expandability of the device. The connecting strips are arranged in an array mode in the short-axis direction, and stability and firmness in the short-axis direction are guaranteed.

The present invention discloses a method for processing pathological specimens. The method includes: fixedly arranging an image acquisition camera above the specimen placement table, and when a specimen to be processed is placed on the specimen placement table, acquiring a first image of the specimen to be processed captured by the image acquisition camera. Then, based on the morphology of the specimen to be processed in the first image, determining the long axis and short axis of the specimen to be processed, and controlling a spray gun to spray pigments of different colors through the specimen placement table onto both sides of the long axis. Determining a plurality of equally spaced cutting lines according to the short axis, and controlling a cutting knife to cut along each cutting line to obtain a plurality of cut specimens. Finally, numbering all the cut specimens along the direction of the long axis according to the cutting lines. It can be seen that the present invention can realize the standardized processing of pathological specimens, greatly reduce the subjective error rate of pathological specimen processing, and reduce the working difficulty of manual pathological sampling. In addition, a pathological specimen processing device, equipment, and storage medium are also proposed.

The utility model discloses a novel conveying roller way, which relates to the technical field of cogging machine components and comprises a roller and end covers arranged at two ends of the roller. The long shaft is arranged in a through groove formed in the roller, the length of the long shaft is larger than that of the roller, so that the two ends of the long shaft exceed the through groove to form end shafts, the long shaft and the end shafts of the long shaft are coaxial with the roller, first inner holes allowing the end shafts to stretch out are formed in the surfaces of the end covers, and therefore the long shaft and the roller are fixedly connected through the two end covers. The through groove is formed in the roller, the long shaft can be inserted into the through groove to be fixed to the roller, the end covers are welded to the two ends of the through groove, the end covers and the long shaft are welded and fixed, and therefore the high-strength conveying roller way is formed, and an original short shaft with the two sides fixed through the end covers is changed into the long shaft penetrating through the roller. The impact resistance of the roller way is improved, and the problem that the roller way breaks down frequently due to the fact that an original roller way shaft is prone to desoldering and a roller cylinder deforms is solved.

The present invention is provided with a vibration plate (110), at least one case (120), at least one ultrasonic vibrator (130), and at least one resonator (140). The at least one case (120) extends in the longitudinal direction and is joined to the diaphragm (110). The at least one ultrasonic transducer (130) is attached to each of the at least one housing (120) and faces the vibrating plate (110) with a gap therebetween. The at least one resonating plate (140) faces the vibrating plate (110) on the opposite side of the vibrating plate (110) from the at least one housing (120) with a gap therebetween, and extends in the long axis direction. The vibrating plate (110) resonates and vibrates in a direction orthogonal to the vibrating plate (110) at a phase opposite to that of the at least one ultrasonic vibrator (130). The dimension of the inner side of the at least one housing (120) in the long-axis direction is larger than the dimension of the inner side of the at least one housing (120) in the short-axis direction orthogonal to the long-axis direction. If the wavelength converted from the drive frequency of the at least one ultrasonic transducer (130) is lambda, lambda / 2 air resonance can be generated in the gap in the minor axis direction.

Embodiments of the present application disclose an ultrasonic transducing assembly and an ultrasonic transducing array, which can improve the working bandwidth of the ultrasonic transducing assembly. The ultrasonic transducing assembly comprises a substrate, at least one first PMUT unit and at least one second PMUT unit, and the first PMUT unit and the second PMUT unit are located on the substrate. The cross-sectional shape of the first PMUT unit has a long axis and a short axis, and the cross-sectional shape of the second PMUT unit has a long axis and a short axis, and the cross sections are parallel to the substrate. The size of the first PMUT unit is different from the size of the second PMUT unit. The difference between the frequency corresponding to the wave peak position on the sensitivity curve of the first PMUT unit and the frequency corresponding to the wave trough position on the sensitivity curve of the second PMUT unit is less than a preset value, and / or the difference between the frequency corresponding to the wave trough position on the sensitivity curve of the first PMUT unit and the frequency corresponding to the wave peak position on the sensitivity curve of the second PMUT unit is less than a preset value.

The invention discloses a receiving system, a laser radar, a detection device and a vehicle. The system comprises a lens group; the optical filter is positioned on the image side of the lens group; the detector is located on the image side of the optical filter, and the detector is provided with a long axis and a short axis; wherein the focal length of the receiving system in the first direction is different from the focal length of the receiving system in the second direction, the first direction and the second direction are perpendicular to each other in a plane perpendicular to the optical axis, the first direction penetrates through the optical axis, the first direction is parallel to the long axis, and the second direction is parallel to the short axis. Therefore, by arranging the receiving system, a high-harness and high-resolution detection effect can be realized in the first direction, and light in a larger range can be received in the second direction, so that signal crosstalk of the receiving system in a receiving process is reduced, and the signal-to-noise ratio and the dynamic range of a received signal are further improved. And the receiving system is short in length, small in occupied space and low in cost.

To solve problems held by conventional technology, namely, to provide an obstacle removal device with a lighter weight in comparison with the conventional technology and which can remove various obstacles.SOLUTION: An obstacle removal device of the present invention comprises a connected body formed by connecting a plurality of link members in a longitudinal direction. The link members comprise: center engagement bodies; left engagement bodies; and right engagement bodies, and housing spaces are formed between the left engagement bodies and the right engagement bodies aligned in a short axis direction. A part of the link members is a projection link member and a projection projecting in the short axis direction is formed in the projection link member. Then, an obstacle can be removed from overhead wire while capturing the obstacle by hanging the projection of the projection link member on the obstacle held on the overhead wire.SELECTED DRAWING: Figure 3

The application discloses a method and device for determining static friction of a surface bubble of a femtosecond laser modified sample and a storage medium. The method comprises the following steps: placing the femtosecond laser modified sample as a heating surface in a test channel arranged vertically to the ground, and controlling a working medium in the test channel to flow in a direction upwardly perpendicular to the ground; applying a heating power to the femtosecond laser modified sample to generate a bubble on a heating surface of the femtosecond laser modified sample; determining a long axis length and a short axis length of the bubble in a preset state, and a bubble movement speed of the bubble; the preset state represents a shape and a movement state of the bubble when the bubble is close to separating from the heating surface; and determining the static friction of the bubble in the preset state according to the long axis length, the short axis length and the bubble movement speed.

The magnetic sensor of the invention has an element portion that is elongate, that exhibits magnetoresistive effect and that has a magnetically sensitive axis in a direction of a short axis thereof. The element portion is non-oval and can be arranged in an imaginary ellipse, wherein the imaginary ellipse has a major axis that connects both ends of the element portion with regard to a direction of a long axis thereof to each other and a minor axis that connects both ends of the element portion with regard to a direction of the short axis thereof to each other, as viewed in a direction that is perpendicular both to the short axis and to the long axis of the element portion.

The reduction forceps for treating the rotational dislocation type tibial plateau fracture comprise a first forceps leg and a second forceps leg which are oppositely arranged, finger rings are integrated at the near ends of the first forceps leg and the second forceps leg, and a first forceps shoulder and a second forceps shoulder are integrated at the far ends of the first forceps leg and the second forceps leg respectively. A movable hole for the first forceps shoulder to rotate penetrates through the second forceps shoulder, the first forceps shoulder penetrates through the second forceps shoulder through the movable hole, a short shaft is fixed to the first forceps shoulder, and the second forceps shoulder rotates around the short shaft. When one clamp arm rotates to contact with the rotary dislocation tibial plateau, the other clamp arm rotates to contact with the rotary dislocation tibial plateau, at the moment, the heights of the ends of the two clamp arms are inconsistent, but when the two clamp arms are close to each other for resetting, the pressure direction of the ends of the two clamp arms is perpendicular to the resetting direction of the rotary dislocation tibial plateau, and the resetting stability is improved.

The invention discloses a two-dimensional scanning micromirror with high reliability and high stability, which is characterized in that a second driving unit is arranged at the center position in a frame, and driving beams on the left side and the right side of the second driving unit are rotatably connected with the frame through two slow shafts; the first driving unit is arranged at the center position in the second driving unit in the ring inner circumference direction of the second driving unit, and the upper side and the lower side of the first driving unit are rotationally connected with a driving beam of the second driving unit through two short shafts. The rotating mirror is arranged in the center of the first driving unit, and the upper side and the lower side of the rotating mirror are rotationally connected with a driving beam of the first driving unit through two long shafts. On the premise of ensuring the reliability of the slow axis, the y-direction scanning FOV can be improved, the stress of a high-stress alternating region is reduced by optimizing the distribution of the reinforcing ribs, the reliability of an electrical circuit is improved, the overall fatigue life of the micro-mirror is prolonged, the vibration crosstalk of the fast and slow axes is reduced through the short-axis design and the layout of the reinforcing ribs, and the working stability is improved.