490results about How to "Good self-locking" patented technology

The invention relates to a driving mechanism of a dual-power automatic transfer switch. The driving mechanism mainly comprises a driving electromagnet assembly, a mounting bracket, a connecting plate, a push rod, a lever, an oscillating deck, a crank, a main switch rotating shaft, a connecting rod, a pin shaft, a rotating shaft, a first hinged shaft, a second hinged shaft, a connecting block, a shaft, a third hinged shaft and a fourth hinged shaft; the driving electromagnet assembly is composed of a magnet exciting coil, a dynamic iron core, a spring and a static iron core. The driving mechanism is characterized in that in the driving electromagnet assembly, linear motion in the horizontal direction of the dynamic iron core and the push rod is converted into linear motion of the pin shaft in the vertical direction through the oscillating deck, the lever, the connecting plate and the like, and linear motion of the pin shaft is converted into swing of the main switch rotating shaft around the axis through the connecting rod and the crank. Reciprocating swing of the main switch rotating shaft completes switching on and switching off actions of the whole switch. The oscillating deck plays a role in changing the motion direction. The lever plays a role in increasing thrust. A connecting rod crank mechanism plays a role in self-locking and preventing reversion.

The invention relates to an electric power plant condenser high pressure water shooting flow online washing robot technology that cleans the electric power plant condenser by high pressure water shooting flow. Setting the mechanism arm locating device and high pressure soft tube into the condenser by using the combination method and install structure of locating mechanism arm orientation device formed by extending mechanism arm and rotating mechanism arm, high pressure soft tube manage device, and high pressure spray head control device, locates the spray head on the rotating mechanism arm by computer control system, sends to the inner of the condenser copper pipe, and cleans the dirt in the inner of the condenser copper pipe by high pressure water shooting flow. The generating set needs not stop while cleaning. The invention has advantage of simple structure, no pollution and high reliability.

The invention discloses a device and a method for measuring static rigidity of a rolling linear guide rail pair. A servo motor is used for driving a ladder-shaped lead screw to drive a loading nut to load the rolling linear guide rail pair. Three loading methods of vertical loading, deflecting loading and pitching loading can be adopted on the guide rail pair by changing installation positions of the guide rail pair and the type of an upper clamp of the guide rail. Measurement points, which correspond to different loading methods respectively, are distributed on the upper clamp and a lower clamp of the guide rail, and are used for determining deformation displacement of the guide rail pair when the guide rail pair is loaded. According to the device and the method for measuring the static rigidity of the rolling linear guide rail pair, automatic measurements of vertical static rigidity, deflecting static rigidity and pitching static rigidity of the rolling linear guide rail pair are achieved, a loaded load is high, measurement accuracy is high, and needs for different loading methods of different guide rail series can be satisfied.

The invention discloses a lifting drying rack. The lifting drying rack comprises a lifting motor, a pull rope, a lifting rack and a drying rod, wherein the upper end of the stretchable lifting rack is fixed to a ceiling, and the drying rod is connected to the lower end of the lifting rack. The lifting drying rack further comprises a manual lifting mechanism provided with a rotatable second winding wheel, the lifting motor is arranged at the upper end of the lifting rack, an output shaft of the lifting motor is connected with a first winding wheel through a speed change mechanism, the lower end of the lifting rack is provided with a movable pulley, and the upper end of the lifting rack is provided with a fixed pulley; one end of the pull rope is fixedly wound on the first winding wheel in a stacked mode, the other end of the pull rope is sequentially wound around the movable pulley and the fixed pulley and then fixedly wound on the second winding wheel in a stacked mode. The lifting mechanism can be suitable for electrical operation and manual operation to ensure normal use of the drying rack in a power failure, saves labor for operation and is convenient to install.

The invention discloses an impacting-sliding composite frictional wear testing device and a method thereof. The method comprises the following steps that a spherical upper test piece is clamped on an upper clamp and a planar lower test piece is clamped by using a lower clamp; the lower clamp is controlled to move up and down by a precise screw lifting platform so that the upper test piece and the lower test piece come into contact; a servo motor drives the upper test piece to do up-down reciprocating motion at set frequency f, times N and displacement S by an eccentric disc, an upper knuckle bearing, a lower knuckle bearing, an impacting shaft, a spring leaf and an upper clamp, and carries out reciprocating impact on the lower test piece; in the impacting process, the spring leaf is deformed under the action of stress, so that impacting-sliding composite frictional wear between the upper test piece and the lower test piece is realized; and simultaneously, the force borne by the lower test piece is tested by a three-dimensional dynamic piezoelectric sensor connected with the lower clamp and is transmitted to a data acquisition control system, and a friction coefficient-cycle time curve is obtained by analysis. The impacting-sliding composite frictional wear testing device and the method disclosed by the invention have the advantages that the material can conveniently generate rigidity-adjustable impacting-sliding composite frictional wear, the automation degree is high and the repeatability of experimental data is good.

The present invention discloses one kind of air cylinder or oil cylinder with self-locking device. The air cylinder or oil cylinder includes one cylinder body, one piston rod inside the cylinder body, one cylinder cap, one piston fixed to one end of the piston rod, one lock connected to the end of the piston rod stretched beyond the cylinder cap, and one clamping slot in the outer edge of the cylinder cap. The air cylinder or oil cylinder has self-locking device in simple structure and good self-locking effect, and may be operated only in the presence of driving force caused by air or oil pressure, reaching no malfunction.

The invention provides a convenient-to-adjust special bed for the department of gynaecology and obstetrics. The bed comprises a base, a ring platform and a telescopic adjusting rod locking nut; the tops of two lifting rods are connected with a bed body; three short guiding wheels are arranged on the parts, located on the inner sides of the front and rear end faces of a mattress, of leg parts; a sewage bucket clamping groove is formed in the right side of the bed body, and a sewage bucket is clamped in the sewage bucket clamping groove; each of both left and right sides of the right portion ofthe bed body is slidably connected with a translation sliding block; a rotary adjusting rod is axially connected with the outer side of each translation sliding block; a rotary adjusting rod fixing screw is in threaded connection with each translation sliding block. By adopting a double lifting and lowering rod structure, the height of the bed body can be lifted and lowered, the tilting angle of the bed body can be adjusted, the operation is convenient, the adjustment is simple, multiple functional adjustments can be achieved by adopting multiple kinds of adjusting mechanisms, the practicability is higher, and the adjusting effect is better.

An electromagnetic motor comprises a stator (11) and a rotor (12). One of the stator or the rotor has windings, or both have windings. At least one of the windings is made of a printed circuit (13). By using the printed circuit as a winding, not only the time and the copper material for winding a winding with copper wires could be saved, but also the accurate line design could be achieved, which is beneficial to miniaturize the electromagnetic motor.

The invention discloses a pressing-type self-locking pull head, which comprises a pull head main body, wherein the pull head main body is formed by integrally connecting a lower wing plate, a guide pillar and an upper wing plate; a connecting ring is arranged at the top of the upper wing plate; a self-locking hole is formed in the connecting ring; a pressing-type self-locking mechanism is arranged at the top of the connecting ring; the pressing-type self-locking mechanism is composed of a movable button, a reset spring and a fixed seat; an accommodating cavity is formed in the movable button; a self-locking ejector is arranged in the accommodating cavity; an accommodating groove is formed in the outer sidewall of the movable button, and an elastic clamping block is arranged in the accommodating groove; a mounting through hole is formed in the fixed seat; a first clamping groove, a second clamping groove and an elastic oscillating bar are arranged on the sidewall of the fixed seat; the bottom of the fixed seat is fixedly connected to the connecting ring; the movable button is arranged in the fixed seat; the reset spring is arranged in the accommodating cavity; the bottom of the self-locking ejector freely runs through the self-locking hole; and the bottom of the elastic clamping block is clamped in the first clamping groove. The pressing-type self-locking pull head provided by the invention is simple in structure, convenient to assemble and use and good in self-locking effect.

The invention relates to the technical field of hydraulic equipment and discloses a self-locking hydraulic cylinder which comprises an outer cylinder barrel, an inner cylinder barrel and a piston rod;the inner wall of the inner cylinder barrel is provided with a chute; the chute is internally provided with a self-locking pin; the piston rod is provided with a self-locking groove matched with theself-locking pin; the outer cylinder barrel is internally provided with a locking device; the locking device comprises a frame body, a sprocket-chain mechanism and rolling wheels; a clamping plate anda supporting rod are connected to the interior of the frame body in a sliding manner; one end, extending out of the frame body, of the supporting rod is provided with a rack; the rolling wheels are abutted to the piston rod and are coaxially connected with one sprocket of the sprocket-chain mechanism; and a gear is coaxially connected to the other sprocket of the sprocket-chain mechanism and is mutually engaged with the rack on a supporting rod. For the hydraulic cylinder, the piston rod can have the retraction action, a locking device starts self-locking protection, and the clamping plate performs radial clamping and fixing on the piston rod, so that the retraction action of the piston rod is overcome, and the piston rod keeps stable work at the current position.

The invention discloses a self-locking clamping manipulator. The self-locking clamping manipulator comprises a rack, a screw rod, two sliding tables, two clamping jaws and a driving mechanism, wherein the rack is provided with a transverse sliding groove; the screw rod is arranged in the transverse sliding groove in a rotating mode; the left side and the right side of the screw rod are each provided with a threaded part, and the threaded parts on the left side and the right side of the screw rod are opposite in thread turning direction; the two sliding tables are arranged in the transverse sliding groove in the mode that the two sliding tables can slide leftwards and rightwards; each sliding table is in engaged connection with one threaded part of the screw rod through a threaded hole; the rear ends of the two clamping jaws are arranged on the sliding tables respectively; the driving mechanism is used for driving the screw rod to rotate. The self-locking clamping manipulator is simple and compact in structure, the operation space for the two clamping jaws is large, actions are flexible, position locating is accurate, and reliability is high.

The invention relates to a hatch cover device capable of being automatically opened, closed and locked. The hatch cover device comprises a pressure withstanding shell taper section, the bottom of the pressure withstanding shell taper section is provided with a locking rotary ring through a surrounding wall, a rack base and a support are installed at one end of the pressure withstanding shell taper section, an opening-closing electric push rod is connected to the support, the head of the opening-closing electric push rod is connected with the top of a hatch cover through an opening-closing lever, and the opening-closing lever is hinged to the rack base. A sealing ring is arranged on the inner end face of the hatch cover, and a plurality of wedge-shaped lugs are evenly distributed on the outer end face of the hatch cover in the circumferential direction; protruding lugs are arranged on the inner circumferential face of the locking rotary ring and are divided into the upper layer protruding lugs and the lower layer protruding lugs; the lower layer protruding lugs are matched with the wedge-shaped lugs on the hatch cover; racks are further installed at the other end of the pressure withstanding shell taper section through rack supports, a locking electric push rod is installed through a push rod support, the head of the locking electric push rod is in butt joint with the racks, and gear rings meshed with the racks are installed at one end of the locking rotary ring. The hatch cover device is good in working reliability, has the site operability, and is good in opening-closing locking sealing effect and high in bearing capacity.

The invention discloses an excavator moving arm potential energy classified recovery and release device and a method thereof. The device comprises an engine, a pilot pump, a main pump, an operation handle, five pressure sensors, a moving arm locking control valve, a hydraulic control reverse valve, two shuttle valves, a moving arm locking main valve, two release valves, a moving arm locking pilot valve, two energy accumulators, two recovery valve moving arm oil cylinders, four one-way valves, a controller, a safety valve, a stop valve, a high-pressure release valve, a back pressure valve and an auxiliary motor. The device judges if a moving arm has a load through acquiring pressure signals in each point, so that the high-pressure energy accumulator is used for recovering the load when the moving arm is high in load, the low-pressure energy accumulator is used for recovering the load when the removing arm has no load, the potential energy of the moving arm under different working conditions can be totally recovered, and such defects as throttling loss caused by a traditional method or a proportional direction valve, a throttle valve and a speed adjusting valve, weak control characteristic by single energy accumulator and incapability of totally recovering the power reducing potential energy are prevented; and the device has such characteristics as high oil saving rate, good controllability and no influence on working efficiency of a traditional machine.

The invention discloses an overline transportation mobile type lifting appliance with four car doors. The overline transportation mobile type lifting appliance with the four car doors comprises a main framework, car door mobile frameworks and car door fixtures. The upper end of the main framework is provided with a support beam. The car door frameworks are hinged to the main framework. The car door fixture is connected to the car door mobile frameworks. The upper end of the main framework is further provided with a longitudinal beam. The car door mobile framework is provided with a start-stop device and a car door clamping self-lock device. The distance between two clamping components of the car door fixtures can be adjusted. The overline transportation mobile type lifting appliance with the four car doors has the advantages that by adding the longitudinal beam, the start-stop device and the car door clamping self-lock device on the framework of the lifting appliance, the lifting appliance is the overline transportation mobile type lifting appliance capable of transporting and actively running in the length direction of the car doors and the second direction of the thickness, and at the same time, the problems that loading and unloading the car doors are inconvenient, the universality is bad and repair and maintenance are inconvenient are solved; at the same time, the structure is simple, the operation is convenient, the labor intensity of constructors can be effectively reduced, and the safety of car door transporting and active running is improved.

The invention discloses a parking locking mechanism for an automobile speed changer. The parking locking mechanism for the automobile speed changer is characterized in that the parking locking mechanism comprises a locking mechanism body and a manual unlocking mechanism; the locking mechanism body is composed of a conical surface intermediate shaft, a friction ring, a conical surface locking ring, a lead screw, a guide rod and a motor; the shaft end of the conical surface intermediate shaft is in a conical surface shape, and the periphery of the conical surface intermediate shaft comprises multiple rows of oil discharge grooves which are connected with a through hole in the shaft center; an inner hole of the conical surface locking ring is conical and comprises multiple oil return grooves; the motor is controlled to rotate to drive the conical surface locking ring, the friction ring and the conical surface intermediate shaft for combination so as to achieve braking of the speed changer; the concentricity of three conical surfaces of the conical surface intermediate shaft, the friction ring and the conical surface locking ring can be guaranteed during mounting of the parking locking mechanism, so that braking accuracy is guaranteed and automobile sliding is avoided. Power-off self-locking and power-on unlocking are achieved; the control operation is simple; the structure is compact; comprehensive functions are achieved; the reliability and the stability of parking braking are effectively improved.

The invention discloses a mechanical micro-feeding knife rest for a KDP crystal ultra-precise flying cutting machining machine tool, relates to the mechanical micro-feeding knife rest, and aims to solve the problems that a micro-feeding device of an existing KDP crystal ultra-precise flying cutting machining machine tool knife rest is insufficient in resolution, the feed rate can not be accurately adjusted, and then machining accuracy is affected, and other mechanical micro-feeding devices are not suitable for the KDP crystal ultra-precise flying cutting machining machine tool. A coarse adjusting part and a fine adjusting part are arranged in series, a feed screw nut mechanism is adopted for the coarse adjusting part, and a differential head driving slope mechanism is adopted for the fine adjusting part. A small end of a feed shaft is assembled by a precise external thread and a coarse adjusting nut. A driving wedge and a driven wedge are arranged in a large end through groove and a blind hole respectively, the driving wedge is compressed by a differential head and a reset spring at the two ends of the driving wedge, the driven wedge is fixedly connected with a knife clamping block, and a supporting spring is sleeved outside the knife clamping block, arranged in the large end blind hole with the knife clamping block and compressed by an end cover. The mechanical micro-feeding knife rest for the KDP crystal ultra-precise flying cutting machining machine tool is used for achieving micro-feeding of the KDP crystal ultra-precise flying cutting machining machine tool knife rest.

The invention belongs to the field of underwater recovery devices. The purpose is to provide a six-degree-of-freedom underwater recovery device, which can automatically control the conical guide coverto achieve six-degree-of-freedom movement in space, thereby changing the position and attitude of the conical guide cover, thereby increasing the permissible angle of the AUV entering the conical guide cover in disguise. The technical scheme is as follows: a six-degree-of-freedom underwater recovery device is characterized in that the device comprises an upper platform, a lower platform, a docking device fixed on the upper platform for recovering AUV and six telescopic rods sequentially arranged in a W-shape between the upper platform and the lower platform to adjust the position of the docking device; the six telescopic rods have the same structure and the included angle between two adjacent telescopic rods is the same; the lower end of the expansion rod is rotatably connected with the lower platform through a first Hooke hinge, and the upper end of the expansion rod is rotatably connected with the upper platform through a second Hooke hinge.

The invention relates to a clamping fixture and particularly relates to a bi-directional positioning clamping fixture. The fixture comprises a fixture body, a left clamping jaw and a right clamping jaw which are hinged with the fixture body, a push rod fixedly connected with the left clamping jaw, a strong spring sleeved on the push rod, a sleeve arranged at a transmission end of the thrust rod, a cam used as a force application device, and a linkage pin which has the driving function, wherein the fixture body is provided with a horizontal through hole and an inclined through hole; the push rod penetrates through the horizontal through hole, and the transmission end of the push rod extends to a rectangular groove correspondingly formed at a drive end of the lower part of the left clamping jaw; the linkage pin penetrates through the inclined through hole, and two ends of the linkage pin extend to grooves which are correspondingly formed on the left clamping jaw and the right clamping jaw respectively; the drive end of the left clamping jaw is also provided with a roller; the roller is pressed against the cam; and moreover, one end of the strong spring is connected with the push rod, and the other end of the strong spring is connected with the sleeve; By using the bi-directional positioning clamping fixture in the technical scheme, a workpiece can be positioned accurately and is convenient to assemble and disassemble; and the bi-directional positioning clamping fixture is strong in self-locking performance and low in using cost.

The invention relates to the field of three-dimensional scanning, in particular to a three-dimensional optical scanner which comprises a scanning table body, a driving mechanism, a lifting support, arotary adjusting mechanism, a clamping mechanism and a scanning head, the scanning table body is of a circular truncated cone structure, the driving mechanism is installed on the edge of the top of the scanning table body, and the lifting support is fixedly installed on the top of the driving mechanism. A mounting base is fixedly mounted at the end, away from the driving mechanism, of the liftingtype support, a bearing plate is fixedly mounted at the top of the mounting base, a rotary adjusting mechanism is fixedly mounted at the top of the bearing plate, and a scanning head is rotatably mounted on the rotary adjusting mechanism; the driving mechanism is of an annular structure; and a clamping mechanism is fixedly mounted on the scanning table body on the inner side of the driving mechanism; according to the rotation adjusting mechanism, the scanning head is adjusted through the worm and gear, due to the fact that the worm and gear has good self-locking performance, the stability andreliability of the scanning head are better, the stability of an object is guaranteed through the clamping mechanism, and the scanning precision is improved.

The invention discloses a rapid-positioning and pneumatic-compressing universal fixture capable of slightly adjustable inclination angle, which comprises a bracket mounted on a workbench, wherein a box body is rotationally connected with the bracket; a flat fixture is fixed on a top plate of the box body and used for mounting a workpiece; the box body is provided with a pneumatic compressing mechanism for compressing the workpiece; and a box body angle adjustment device is arranged between the box body and the bracket. The universal fixture can rapidly position and press the workpiece when medium and small parts are machined; the inclination angle of the fixture can be adjusted; and the universal fixture has the advantages of good universality, high positioning accuracy, good self-locking property, and the like.

The invention relates to an electromagnetism movement stacking method and a device of electromagnetism movement stacking and belongs to the technical field of devices special for plate material stacking. The electromagnetism movement stacking method and the device of the electromagnetism movement stacking solves the problem of stacking of fetching and movement of contour plates. The electromagnetism movement stacking method is characterized by including the steps of picking up proximate matter by adopting a suction electromagnet, moving the contour plates on a transmission line to a stacking platform, and stacking the contour plates in order. The invention further provides the electromagnetism movement stacking device according to the electromagnetism movement stacking method. The electromagnetism movement stacking device comprises a pick device provided with the suction electromagnet and a movement device connected with a sliding block. The electromagnetism movement stacking device is capable of moving and stacking the contour plates. Horizontal reciprocation of the movement device is achieved through change of corotation and reversal of a motor. The electromagnetism movement stacking method and the electromagnetism movement stacking device has the advantages of being capable of moving the contour plates on the transmission line to the stacking platform and stacking in order, flexible and simple in an adjustment mode, and capable of reducing labor force needed by stacking plates, and effectively improving production efficiency.