237 results about "Point contact" patented technology

The invention discloses a tooth-shaped structure of a bolt fixing tool. The tooth-shaped structure comprises a drive part, a looping part is concavely arranged inside the drive part; the inner periphery of the looping part is a hollow structure and is approximately a polygonal structure, the intersectional angle between edges of the polygonal structure of the looping part are respectively provided with an escape groove, the escape groove is a recessed arc structure, an opening of the escape groove and an opening of the adjacent escape groove take on a straight edge, the straight edge is a lank line section; a top surface is respectively arranged at the center of the straight edges between two adjacent escape grooves, the top surface is in a planar straight line section structure, the top surface is arranged at the straight edge between the two adjacent escape grooves and is superposed on the straight edge; a first groove and a second groove are respectively recessed between the escape groove and the top surface, the first groove is closer to the escape groove, the second groove is closer to the top surface, the first and the second grooves are arranged in line symmetry with another first and second grooves; based on the intermediate vertical line of the distance between the two side walls of the escape groove with the arc structure, the first and the second grooves are arranged in line symmetry with another first and second grooves by the central vertical line of the distance between the two side walls of the arc structure of the escape grooves. The tooth-shaped structure of a bolt fixation tool can not cause slipping and bruting of the bolt fixing part resulting from the stress concentration of point contact.

A method of recovering a master calibration state of a coordinate positioning machine has a first member that is moveable relative to a second member, wherein the geometry of the machine is characterised by a set of model parameters. The machine is controlled to make point contact between multiple reference surfaces of a tool mounted on the first member and multiple reference surfaces of an artefact mounted on the second member. The separations between these contacting surfaces that would be expected from the current model parameters are determined, and these separations are recorded as a set of master separations. The contacting step is subsequently performed again in respect of at least some of the contacts for which master separations were recorded. At least one of the model parameters is updated to provide a closer correspondence between the expected separations and the master separations.

The present disclosure relates to a bending and rotation mechanism that enables control of bending operations accompanied by rotational operations. The mechanism includes a bending and rotation object the can be subjected to bending operations and rotational operations, and a string-like object contacting the bending and rotation object at a first contact point and second contact point of the bending and rotation object. A straight line connecting the first contact point and the second contact point is on a skew line relative to the axis of the bending and rotation object. The bending state and rotation state of the bending and rotation object are controlled on the basis of the length of the string-like object between the first contact point and the second contact point. The present disclosure can be applied, for example, to a bending and rotation mechanism, an information processing device, an electronic apparatus, or an information processing method.

The utility model discloses a casting mould quick positioning connecting structure, including upper die and lower die, the die cavity surface clamping of upper die has lower die, still include three order positioning groove, fixed pin mechanism, mould spin hole and stop spin hole, the die cavity surface rectangle distribution of upper die is equipped with three order positioning groove, through setting three order positioning groove at upper die, and lower die place sets up mould spin hole and stop spin hole for assembling fixed pin mechanism, and the fixed pin mechanism of lower die place containing head fixed column, vice fixed platform, main fixed platform can cooperate three order positioning groove and form three point contact surface formula positioning connection, and the positioning butt joint level is increased significantly, can realize the positioning of upper die and lower die fast and accurately, and the composite installation mode of main fixed platform rear tail spin column cooperation inner hexagonal bolt at lower die, both solve the problem of single thread installation instability, and when the positioning part wears, through the convenient spin disassembly operation realizes the quick replacement of positioning structure.

The utility model relates to a prism driving device, camera module and electronic equipment, comprising a base and a movable frame which is driven by a first driving assembly to rotate around an incident optical axis relative to the base, the prism driving device also comprises a fixed-point moving part and a plurality of ball groups, each ball group comprises a plurality of balls, the fixed-point moving part and the plurality of ball groups are respectively distributed on a plane vertical to the incident optical axis, the fixed-point moving part is in movable contact with at least any one of the base and the movable frame, and the ball groups are in movable contact with at least any one of the base and the movable frame. The driving device has the advantages that the design of the fixed-point moving part and the multiple ball groups is adopted, the precision and stability of the driving device are remarkably improved through the design of multi-point contact of the ball groups, and vibration and abrasion are reduced. Smooth rotation and high-precision positioning of the prism are ensured, and meanwhile, the modular design of the fixed-point moving part and the ball group facilitates maintenance and replacement.

The utility model relates to the technical field of locks, in particular to a door lock for an inner end door of a high-speed passenger train. Comprising a lock body, a lock cylinder is arranged on the lock body, and a pin shaft is arranged on the lock cylinder; a through groove for containing the lock column is formed in the lock body, a pin groove matched with the pin shaft is formed in one end of the lock column, and the other end of the lock column extends out of the lock body. Two positioning grooves perpendicular to the lock column are further formed in the lock body, ball screws facing the lock column are arranged in the two positioning grooves, two limiting concave rings matched with the ball screws are arranged on the lock column, and the two limiting concave rings are located at the positions where the lock column is matched with the ball screws when the door lock is in the opened state and the closed state respectively and used for fixing the lock column. According to the door lock for the inner end door of the high-speed passenger train, matching of materials is achieved, and the movement direction of the lock column is adjusted by limiting the degree of freedom; the surface contact between the lock column and the lock body is changed into point contact, the fit clearance between the lock column and the lock body is as small as possible, the extension and retraction of the spring bolt are flexible and free, and the phenomena of clamping stagnation and shaking are avoided.

This invention relates to the field of medical devices and discloses an auxiliary tool for closed reduction of humeral fractures, comprising: a fixation body having a reduction channel formed inside, wherein at least two sides of the fixation body are respectively provided with openings communicating with the reduction channel; and a reduction module that can enter the reduction channel from any of the openings, wherein the reduction module can move and be positioned along a direction close to or away from the central axis of the reduction channel, wherein there are multiple reduction modules. This invention inserts multiple reduction modules from different openings to construct a customizable, multi-point contact and support structure within the reduction channel, and does not require manual positioning or additional trauma to the injured limb, thus achieving less trauma, higher stability, and more flexible operation in assisting closed reduction of humeral fractures.

Provided is a ball screw capable of reducing quadrant glitch error and torque resistance. Each of a thread groove of a nut (13) and a thread groove of a screw shaft (12) is formed to be a Gothic arch groove having two flank surfaces (13a1, 13a2) (or 12a1, 12a2). A preload causes the ball (14) to come into two-point contact with a flank surface (13a1) on the load side of the thread groove of the nut (13) and a flank surface (12a1) on the load side of the thread groove of the screw shaft (12). The thread groove of the nut (13) is formed so that the ball (14) does not come into contact with the flank surface (13a2) on the non-load side of the nut (13) even if the ball (14), during forward operation, moves toward biting into the flank surface (13a2) on the non-load side of the nut (13) in a direction perpendicular to the revolution direction. The thread groove of the screw shaft (12) is formed so that the ball (14) does not come into contact with the flank surface (12a2) on the non-load side of the screw shaft (12) even if the ball (14), during reverse operation, moves toward biting into the flank surface (12a2) on the non-load side of the screw shaft (12) in a direction perpendicular to the revolution direction.

The utility model discloses an inlaid ornament and ring, the ring comprises a ring body, the inlaid ornament is arranged on the ring body, the inlaid ornament comprises a main inlaying opening structure and a main diamond inlaid in the main inlaying opening structure, the main inlaying opening structure comprises a main inlaying seat and at least two limiting claws, and the limiting claws are arranged on the main inlaying seat. A cavity is formed in the main inlaying base, supporting parts are arranged on the two sides of the upper portion of the main inlaying base and make point contact with the pavilion portion of the main diamond, a gap is formed between the main diamond and the cavity, and the limiting claw is used for limiting the waist and the crown of the main diamond. A gap is formed between the inner side of the limiting claw and the main diamond, and the supporting part is matched with the limiting claw so that the main diamond can shake around two contact points. The diamond provided by the utility model can slightly shake around the connecting line between the two contact points, so that the main diamond is more shiny, and the dynamic visual effect of the ring is greatly improved.

The chamfering device comprises a conical grinding wheel, a clamping mechanism and a grinding wheel inclining mechanism, the grinding wheel inclining mechanism is used for clamping the grinding wheel and adjusting the inclined cutting angle of the grinding wheel towards the cylindrical lens, the clamping mechanism is used for clamping the cylindrical lens through the end, and meanwhile through the structural design of a guide base, a spring and the like, the cylindrical lens is clamped through the clamping mechanism. During chamfering, the end can abut against the side face of the grinding wheel; when the to-be-chamfered face is a concave face, the arc-shaped edge of the concave face abuts against the side face of the grinding wheel, the arc-shaped edge is ground at a time through rotation of the grinding wheel, and chamfering is achieved. When the to-be-chamfered face is a convex face or a plane, the arc-shaped edge of the convex face or the straight edge of the plane makes point contact with the side face of the grinding wheel and abuts against the side face of the grinding wheel through the spring, the cylindrical mirror translates from one end to the other end at a constant speed relative to the grinding wheel in the linear direction of the to-be-chamfered edge, and the chamfered edge is continuously ground through the rotation of the grinding wheel and the translation compound motion of the cylindrical mirror. And chamfering is achieved. Through the synergistic effect of the grinding wheel and the clamping mechanism, the precision of the chamfering width and angle of various curved surfaces is achieved, and the problem that the chamfering width and angle are not uniform due to an existing spherical mold is solved.

The present application belongs to the technical field of medical devices, and particularly relates to a TPLO animal special bone plate, which comprises a handle body extending vertically as a whole for connecting a tibia stem, the top end of the handle body is suspended to form an arm body extending transversely as a whole for connecting a bone cut, the plate body of the handle body and the arm body is respectively provided with a protruding unit, when the protruding unit is positioned against the tibia, the plate body of the handle body and the arm body is arranged in the gap between the tibia. The arm body extending transversely as a whole can reliably support the middle and lower part of the bone cut, while reducing the surface area of the bone plate head covering the bone cut, and can also ensure the effective fixation of the bone plate to the bone cut. The protruding unit arranged on the inner side of the bone plate and the tibia form a point contact, which can ensure the reliable positioning of the bone plate and the tibia, and also keep a gap between the bone plate and the tibia for blood delivery and circulation, which is beneficial to the blood circulation of the bone block covered by the bone plate.

The utility model discloses a long shaft part machining and positioning tool, and belongs to the technical field of long shaft part clamping and fixing. The multiple fastening assemblies slide on the base in the long edge direction of the base, each fastening assembly comprises a base plate and two clamping parts which are symmetrical with the center of the base plate as the reference, the two clamping parts in the same fastening assembly are matched with each other to clamp the long shaft from the left side and the right side of the long shaft, and the clamping parts clamp the long shaft from the upper side and the lower side of the long shaft; when the clamping device is used for clamping, four-point contact is formed between the clamping device and a part, clamping stress can be effectively dispersed, and deformation of a long shaft is avoided.

A hinged ladder for ascending to and descending from a cockpit of an aircraft and method of using the ladder for access to and egress from the cockpit. The ladder is suspended from an anchor which supports the combined weight of the ladder and a user. The ladder comprises a plurality of rung plates connected by hinges. The rung plates have respective holes to accept the foot of a user. In use, the ladder is suspended from an anchor in use, and extends longitudinally. The ladder has a standoff to provide single point contact against a fuselage of the aircraft, preventing damage during use. The standoff may articulate outwardly from a rung plate about an X axis. The standoff may be braced by paired struts which articulate about respective Y axes, preventing collapse of the standoff. Each strut may be locked in position by a respective latch which articulates about a respective Z axis.

The invention discloses a machining tool for a high-speed-level turning support of an intelligent fan, and relates to the technical field of turning support machining tools.The tool comprises a base plate and a suspended supporting mechanism, and the suspended supporting mechanism is composed of a bottom point location supporting structure and an end clamping structure; the bottom point location supporting structure comprises two first supporting seats and a second supporting seat, and supporting studs abutting against the bottom face of the support body are arranged at the top ends of the first supporting seats and the top ends of the second supporting seats. Through the arrangement of the bottom point position supporting structure, a stable bottom supporting reference can be provided for the bracket main body by virtue of the geometric stability of a triangle by virtue of triangular distribution formed by the supporting seat II and the two supporting seats I on the top surface of the base plate; meanwhile, the supporting studs at the top ends of the first supporting seat and the second supporting seat directly abut against the bottom face of the support body, point location type supporting of the support body is achieved through three-point contact, and the whole support body is erected above the base plate to be in a suspended state.

This utility model provides a stable support device for a high-angle running platform of a treadmill, comprising: a frame on which a running platform is mounted, thereby forming a treadmill; characterized in that: a stable support device is provided at the bottom rear side of the running platform, comprising: two longitudinal rods, each more than 15cm in length, connected in the middle by a transverse shaft, the two ends of the transverse shaft extending beyond the outer surfaces of the two longitudinal rods; two bearing seats, shaped like inverted U-shapes, fitted onto the two ends of the transverse shaft, the top surface of the bearing seats being higher than the two longitudinal rods, and having at least two engagement holes on the top surface, which are locked to the bottom of the running platform by two screws, thereby allowing the rear side of the running platform to pivot around the transverse shaft; and at least four feet, respectively installed on the bottom edge of the ends of the two longitudinal rods, forming a four-point contact with the ground. Accordingly, this utility model provides a stable grip on the ground with four points of contact, resulting in a stable and level surface, reducing frame wobbling and noise, and improving safety during exercise.

The application discloses a battery clamp, which comprises a mounting frame, a plurality of layer plates, a guide rail and two push plates, the layer plates are movably arranged on the mounting frame along a first direction, the guide rail is arranged on the mounting frame and extends along the first direction, and the two push plates are arranged in parallel along the first direction and are arranged between the layer plates. The application can avoid the problem of rapid wear caused by point contact in the related art, can make the guide rail and the push plate have a better guiding cooperation effect, and is thus beneficial to preventing parallelism deviation between the push plates.

According to the semicircular tooth zipper, the first zipper teeth and the second zipper teeth are provided with the abutting parts and the limiting parts correspondingly, and the abutting parts and the limiting parts are continuously adjacent and complement each other in function; the abutting part is located on the side close to the chain belt, and meshing is guided through the abutting part. The limiting part is located on the side away from the chain belt, and rigid blocking is formed through the limiting face. The zipper teeth on the two sides are arranged in a staggered mode, when the zipper teeth are meshed, the first abutting parts are attached to the second limiting parts, the second abutting parts are attached to the first limiting parts, and the self-locking effect is formed through the guiding effect of the abutting parts and the rigid blocking effect of the limiting parts. The two pairs of abutting parts and the limiting parts are attached to form multi-point contact, gaps between the zipper teeth are eliminated, external force is evenly dispersed to the whole meshing face, and local stress concentration is avoided.

Embodiments of the present disclosure relate to coplanar bump contacts of different sizes. The present disclosure relates to a die including a first contact (e.g., a ring-shaped contact) having a first shape and a second contact (e.g., a post-shaped contact) having a second shape different from the first shape. The first contact has an opening extending through a central region of a surface of the first contact. A first solder portion is coupled to the surface of the first contact, and the first solder portion has the first shape. A second solder portion is coupled to the surface of the second contact, and the second solder portion has the second shape. The first solder portion and the second solder portion have respective points that are furthest from a substrate of the die. The respective points of the first solder portion and the second solder portion are coplanar with each other, such that a footprint height of the die remains consistent when coupled to a PCB or electronic assembly.

The utility model discloses a kind of rocker structure based on single roller, belong to engine rocker technical field, solve the problem that existing roller and cam are easy to form point contact, the contact stress caused by point contact is easy to cause the damage of part.The rocker structure includes rocker shaft, the rocker shaft is rotatably provided with rocker, one end of the rocker is provided with pin shaft, the pin shaft is rotatably provided with roller, there is at least one non-linear cylindrical surface between the outer surface of the pin shaft and the inner surface of the roller, the outer surface of the pin shaft and the inner surface of the roller are provided with movable gap, the roller is provided with camshaft below, the camshaft is provided with cam and is in contact with the roller, the outer surface of the cam and the roller is contacted, lubrication channel is opened on the pin shaft and the roller.The rocker structure based on single roller of the utility model greatly reduces the contact stress between roller and cam, greatly improves the contact reliability and durability between roller and cam.

The invention relates to the technical field of medical instruments, in particular to a positioning device special for pain department surgery, which comprises a lifting operating table and an abdomen camber adjuster, a supporting window is formed in the top of the abdomen camber adjuster, and a flexible cushion layer piece is arranged at the supporting window; an arc-shaped chain type arc sheet framework with adjustable camber is arranged in the supporting window; a plurality of contact type camber adjusting assemblies are arranged in the belly camber adjuster, the contact type camber adjusting assemblies are in single-point contact with the bottoms of the chain type arc sheet frameworks, and the contact type camber adjusting assemblies apply telescopic supporting force to the corresponding contact positions of the chain type arc sheet frameworks to adjust the local camber of the chain type arc sheet frameworks; the multi-point contact type camber adjusting mechanism is optimally designed aiming at the problem that traditional abdominal support camber adjustment is difficult to adapt to personalized requirements of patients with spine local segment camber abnormity, and the position adjusting adaptability to the spine form of the patients in the spine prone position operation is improved.

This invention relates to the field of robotic arms and discloses a flexible clamping and tightening industrial robotic arm for sleeves and short sections. It includes a flexible arm device, a gripper device, and a connecting frame. The gripper device includes a rotation mechanism, a sliding mechanism, and a clamping mechanism. The clamping mechanism includes a support block, two sets of clamping components, and three sets of locking components. The support block is fixedly installed on the bottom side of the sliding mechanism. The two sets of clamping components are symmetrically arranged on both sides of the support block. Each clamping component includes a clamping plate, two sliders, a rotating shaft, and two swing rods. Sliding grooves are provided on both ends of the plates. Both clamping plates are semi-circular structures, and their tops are hinged by pins. The three sets of locking components are horizontally arranged within the two clamping plates. An opening and closing mechanism is provided within the support block, a driving mechanism is provided at the top of the two clamping plates, and a pushing mechanism is provided on the side of the connecting frame. This invention solves the problems of the gripper's inability to adapt to sleeves or short sections with various surfaces, small point contact area, weak clamping, and low tightening efficiency.

The MEMS probe comprises a probe head, a probe body and the probe tail, the probe head comprises a probe head body and a probe head end part, and the cross section of the probe head end part is of an inverted trapezoidal structure; the needle body is in a vertical shape and has elasticity; the needle tail comprises a needle tail body and a needle tail end portion, the needle tail body is provided with a needle tail protruding portion and a needle tail groove, the needle tail end portion is of a protruding pointed rectangular pyramid structure, the front side face view and the rear side face view of the needle tail end portion are of an isosceles triangle structure, and the left side face view and the right side face view of the needle tail end portion are of a triangular structure. According to the invention, the breakdown phenomenon in the contact process of the needle tail and the gold-plated point on the signal converter is reduced.

The utility model discloses a relay contact bridge welding silver layer contact point, including contact bridge, the inside installation of contact bridge has hard sheet, the inside of hard sheet is provided with the pusher assembly for pushing contact bridge and is moved, the top surface of contact bridge is installed with silver layer contact point, is equipped with the heat dissipation groove to the outside of silver layer contact point. The utility model discloses through setting up heat dissipation groove, can promote silver layer contact point whole and air contact area, has guaranteed the heat dissipation capacity of silver layer contact point, pusher assembly acts on contact bridge, can push contact bridge and take place certain and move, thereby make silver layer contact point more close to static contact point, make when silver layer contact point and static contact point contact, the contact pressure between silver layer contact point and static contact point promotes, is used for responding to the pressure attenuation of the contact abrasion, deformation in long -term use, guarantees the service life of relay.

The punching device for machining the sealing gasket comprises a bottom plate, limiting grooves are formed in the two side walls of the bottom plate, the punching device further comprises a drilling mechanism, a fixed plate, a movable plate and an adjusting and positioning mechanism, the fixed plate is fixedly connected to one side of the upper wall of the bottom plate, the movable plate is arranged on the upper wall of the bottom plate in a sliding mode, and the adjusting and positioning mechanism is arranged in the fixed plate in a sliding mode. The movable plate is driven by the adjusting and positioning mechanism to move and adjust in the length direction of the bottom plate, a positioning groove is formed between the fixed plate and the movable plate, and the drilling mechanism is arranged above the adjusting and positioning mechanism in a sliding mode along the limiting groove. The utility model belongs to the technical field of sealing gasket machining, and particularly relates to a punching device for sealing gasket machining, which is in multi-point contact, clamps a sealing gasket, improves punching stability and is suitable for positioning and punching sealing gaskets in different shapes.

The gold ornament laser engraving machine comprises a machine frame and a moving mechanism, the machine frame is provided with a bearing face used for loading workpieces, and the moving mechanism comprises a first translation structure and a second translation structure which slide in the length direction and the width direction of the machine frame respectively. The first translation structure clamps the first slide rail group through rollers, the second translation structure clamps the second slide rail group through rollers, and the first translation structure and the second translation structure are orthogonally distributed to form two-dimensional planar motion. A laser engraving device is arranged on the second translation structure, directly faces the bearing surface and is used for engraving a workpiece, and according to the design, a sliding rail set is clamped through rollers, sliding friction is replaced with rolling friction, and moving resistance is reduced; the orthogonally-distributed sliding rail sets prevent a single sliding rail from bearing multidirectional loads, and movement shaking is reduced. The multi-point contact between the roller and the slide rail enhances the rigidity, and ensures that the laser engraving device keeps a stable track at a high speed or in fine adjustment. The design is suitable for high-precision engraving scenes such as gold ornaments.

The invention provides a point contact measuring rod adaptive to a water-cooled magnet, and relates to the technical field of low-temperature measurement. The point contact measuring rod adapted to the water-cooled magnet comprises a measuring head provided with a driving assembly, and the driving assembly is used for driving a sample to be measured and / or a probe to move at least in a three-dimensional space. The point contact measuring rod can be matched with a water-cooled magnet device to measure the superconducting energy gap of a superconducting material, the contact position between the tip of the metal probe and a sample can be changed through movement of the driving assembly, measurement of multiple positions of the same sample can be achieved without frequent insertion and extraction of the measuring rod, and the problems that the probe insertion distance is uncontrollable, and the measurement accuracy is high are solved. Tunnel junction control is unstable, and single measurement contact position is single.

To provide a pipe joint capable of reducing external force required for securing desired pipe holding force.SOLUTION: A pipe joint includes a cylindrical body, a first annular member provided in an internal passage of the body, and a second annular member provided between the first annular member in the internal passage and one end opening of the body into which an external pipe is inserted, and into which the external pipe can be inserted. The main body inner peripheral surface has a facing surface located between the second annular member and the one end opening. The second annular member includes a first contact portion that is in contact with the outer pipe and a second contact portion that can be in line contact or point contact with the facing surface. The first annular member is configured to push the second annular member when being pushed toward the one end opening. The second annular member is configured such that, when the second annular member is pressed by the first annular member in a state in which the first contact portion is in contact with the outer pipe, the first contact portion bites into the outer pipe and the second contact portion is deformed so as to move radially outward while being in contact with the facing surface.SELECTED DRAWING: Figure 5

The application discloses a clamping auxiliary device for welding, which comprises a first clamping part for clamping a Venturi cone pipe and a second clamping part for clamping a circular pipe. The first, second and third sliding blocks are annular or arc-shaped. The annular inner wall of the sliding block matches and is attached to the conical surface / cylindrical surface to be clamped. Compared with the three-point contact of the three-jaw chuck in the prior art, the conical surface / cylindrical surface of the annular inner wall of the sliding block is in contact with the curved surface of the clamped workpiece, the contact area is larger, the circular conical surface and cylindrical surface can uniformly distribute stress, when force is applied at one point, the force will be transmitted to both sides along the tangent direction of the circle, and finally dispersed to the whole structure. The pressure distribution of the clamped workpiece is more uniform, the clamping stability is better, the risk of local cracking is smaller, the finished product quality of the Venturi pipe is better, and the service life is longer.

The application relates to the technical field of clamps, in particular to a metal special-shaped workpiece clamp suitable for lathe machining, which comprises a guide rail fixed on a bottom plate, a machining table for placing an elliptical pipe is fixed on the guide rail, adjusting blocks are arranged on the two sides of the machining table and are slidably clamped on the guide rail, the adjusting blocks can synchronously move towards each other or away from each other through a driving mechanism arranged on the guide rail; the driving mechanism comprises a bidirectional screw rod rotatably arranged on the guide rail and first and second limiting rods fixed above the guide rail, the adjusting blocks are threadedly connected with the bidirectional screw rod, the first and second limiting rods pass through the adjusting blocks and are arranged, a movable frame is movably clamped on the adjusting blocks through a clamping assembly, the application realizes multi-point contact and stress dispersion of the arc-shaped clamping plate when the arc-shaped clamping plate clamps the elliptical pipe, solves the problem that local stress concentration caused by few stress clamping points leads to pipe deformation or loosening, meanwhile, the arc-shaped clamping plate can rotate and can be used for clamping and using elliptical pipes with different profiles, and the adaptability is wide.

The utility model relates to the technical field of sock stretching detection, and particularly discloses a sock stretching performance detection device which comprises a sock stretching instrument, a fixing plate is installed on the front end face of the sock stretching instrument, a fixing mechanism is installed on the fixing plate, and a stretching mechanism is installed in the sock stretching instrument. One end of a sock can be located between a clamping plate and a second vertical plate, then a handle drives a sleeve to rotate, the sleeve drives a first screw to move, and the first screw is matched with a sliding rod and a rectangular block to drive the clamping plate to move until the clamping plate is matched with the second vertical plate to clamp the sock. And similarly, the other end of the sock is clamped and fixed with the fixing mechanism on the movable fixing plate, and the two ends of the sock are fixed in a surface contact manner instead of a point contact manner, so that the stretching force can better act on the sock, and the stretching detection structure is more accurate.