50results about How to "High limit accuracy" patented technology

The invention relates to a patch type diode device structure. The patch type diode device structure comprises a first lead strip, a second lead strip, a connecting piece and a diode chip which are arranged in an epoxy packaging body, wherein a first bending position is arranged in an area between a support area of the first lead strip and a pin area, so that the support area of the first lead strip is lower than the pin area; a second bending position is arranged in an area between a welding area of the second lead strip and the pin area, so that the welding area of the second lead strip is lower than the pin area; a third bending position is arranged between a first welding end and a second welding end of the connecting piece, so that the first welding end is lower than the second welding end; a protrusion portion with thickness smaller than that of the pin area is arranged on the lower surface of the epoxy packaging body; and a plurality of through holes are arranged between the third bending position and the second welding end. The patch type diode device structure eliminates the possibility that a pin suspension degree is below a lower limit, so that product yield loss caused by an ultra lower limit of a suspension degree value in case of unit abnormality and product abnormality caused by miss-judging are avoided.

The invention relates to a single-motor three-station actuator and a mechanical locking protection device thereof. The single-motor three-station actuator comprises a limiting turntable and a limiting device; the limiting device comprises a switching-on stop block and a switching-off stop block which are used for performing one-way limiting on the limiting turntable; the switching-on stop block limits the rotation direction of the limiting turntable in isolation switching on and grounding switching off; the limiting direction of the switching-on stop block is opposite to the limiting direction of the switching-off stop block; the switching-on stop block and the switching-off stop block are both in transmission connection with an automatically resettable driving mechanism which makes the switching-on stop block or the switching-off stop block avoid the limiting turntable and an elastic resetting device which makes the switching-on stop block or the switching-off stop block automatically reset; the switching-on stop block is in transmission connection with a first travel switch which starts a driving motor after the switching-on stop block is triggered in isolation switching on and grounding switching off and turns off the driving motor after the limiting turntable drives the switching-on stop block to be triggered in isolation switching off and grounding switching on; and the switching-off stop block is in transmission connection with a second travel switch the functions of which are opposite to the functions of the first travel switch. With the single-motor three-station actuator and the mechanical locking protection device thereof of the invention adopted, the problem of complicated structure of the mechanical locking protection device of an existing single-motor three-station actuator can be solved.

The present disclosure relates to a method and device for managing application rights, wherein the method for managing application rights includes: monitoring the switching state of the current application program from the background to the foreground; Cancel the restrictions on the current application permissions; if it is detected that the current application is switched from the foreground to the background, when it is determined that the current application name is not in the obtained application list, record the behavior information of the current application, and according to the behavior information Restrict or unrestrict the current application permissions, wherein the application list contains the names of applications with unlimited permissions. The embodiment of the present disclosure greatly improves the restriction accuracy of the application program authority, thereby reducing the system load of the mobile terminal and improving the response speed and battery performance of the mobile terminal without affecting the normal use of the application program.

A reflow soldering sample-limiting device consists of a frame used for setting welded samples, a feed bolt and a locking nut which are used for positioning the samples and a chock. The structure of the frame is a rectangular frame, the inner space of the frame is provided with the limited sample and every two symmetric edge frames forming the frame respectively form corresponding screw holes along the plane direction; the through screw holes used for running through the edge frame by the feed bolt support the samples and is locked by locking the nut, and the chock is plugged into the gaps of the samples. The device also comprises an adjusting slider the end of which forms the through screw hole, an adjusting bolt which runs through the through screw hole on the adjusting slider, and an adjusting nut used for adjusting the adjusting bolt and the adjusting slider; the adjusting bolt is positioned on the upper part of the frame; and the adjusting slider which is sheathed on the adjusting bolt is positioned between the sample and a frame which is parallel with the sample through an adjusting card of the adjusting nut. The invention has the advantages of high limited precision, simple structure and easy adjustment with the precision of up to 0.02mm and can effectively eliminate the defects such as serious sample offset and the like during the process of welding.

The invention relates to a variable-spacing battery cell taking and placing device. The device comprises a mounting bracket; a lifting frame; a sliding rail which is arranged on the lifting frame and slides along with lifting of the lifting frame; battery cell clamping jaws which are used for grabbing battery cells and comprise two middle battery cell clamping jaws arranged in the center of the sliding rail in a sliding mode and side battery cell clamping jaws arranged on the two sides of the middle battery cell clamping jaws; a short variable-pitch driving source which is arranged in the center of the two middle battery cell clamping jaws and pushes the two middle battery cell clamping jaws to move on the sliding rail; first limiting pieces which are arranged on the two sides of each middle battery cell clamping jaw to limit the moving position of the middle battery cell clamping jaws; long variable-pitch driving source which is arranged between the middle battery cell clamping jaw and the side battery cell clamping jaw and pushes the side battery cell clamping jaw to move on the sliding rail; and second limiting pieces which are arranged on the two sides of each side cell clamping jaw to limit the moving position of the side cell clamping jaw. According to the invention, the accurate and synchronous variable-pitch action of a plurality of pick-and-place units between determined distances can be realized.

The invention discloses a longitudinal connecting structure of an assembled sleeper slab-type or a track slab-type ballastless track structure and a ballastless track structure including the longitudinal connecting structure. Two embedded longitudinal steel bars are longitudinally connected through an extrusion sleeve, the butting ends of the two longitudinal steel bars are separately inserted into the two ends of the extrusion sleeve, and the extrusion sleeve deforms and is locked under the extrusion of a portable extruder. According to the longitudinal connecting structure of the assembled sleeper slab-type or the track slab-type ballastless track structure and the ballastless track structure including the longitudinal connecting structure, the accuracy during site laying construction can be improved, disassembly and installation are convenient, the construction difficulty is reduced, the speed of site construction is increased, the structure is simple, and positioning of a sleeper slab or a track slab is convenient.

The invention relates to an atomic-scale surface and structure ultra-short pulsed light efficient processing method. Photon energy is used to cut off chemical bonds between atoms on the surface of a material to remove an atomic layer magnitude controllable material in the depth direction. The transverse size precision and the processing uniformity of a to-be-processed structure are guaranteed by aligning a mask with a light beam energy center; and meanwhile, multi-path beam splitting parallel processing is adopted to meet the high-efficiency requirement of large-scale mass production. According to the atomic-scale structure surface processing method based on the optical ultra-short pulse, the light source wavelength is selected in a targeted mode according to physicochemical properties ofthe material to be processed, the limit precision of atomic layer removal is improved, and lattice damage caused by a thermal process is avoided.

The invention discloses a limiting operation device for a ditching machine., and relates to the technical field of ditching machines. The limiting operation device comprises a limiting frame, a ditching pile and a connecting plate. Movable boxes are movably mounted on the two sides of the interior of the limiting frame. A groove is arranged in one side of each movable box; a sliding rail is fixedly mounted in the groove; the connecting plate is connected with the sliding rail in a sliding mode, a through opening is formed in the center of the connecting plate, the ditching pile is inserted into the through opening, the length and the width of the ditching pile are matched with those of the through opening, two fixing plates are movably connected to the top of the ditching pile, and first sliding ways are formed in the bottom of the fixing plates. According to the limiting operation device for the ditching machine, the required ditching depth can be adjusted, potential safety hazards inthe equipment operation process can be avoided, the protection function is realized, the structure is simple, disassembling, assembling and maintenance are convenient, operation is stable, effectivelimiting can be performed, energy save and environment protection can be realized, the device can be connected with the clamping groove in a clamped mode and movement is convenient and the limiting precision is high.

The invention discloses a multi-channel automatic purification device which comprises a piston driving device and a plurality of purification columns, each purification column comprises a piston assembly, a purification cylinder and a purification layer; the piston assembly comprises a first end and a second end which are oppositely arranged, the first end is arranged in the purification cylinder,and the second end extends out of the purification cylinder and is connected with the piston driving device; the piston driving device is used for driving the piston assembly to do reciprocating motion in the purification cylinder so as to suck the sample extracting solution into or discharge the sample extracting solution out of the purification cylinder through the liquid inlet/outlet of the purification cylinder; the purification layer is arranged in the purification cylinder, located between the first end of the piston assembly and the liquid inlet and outlet of the purification cylinderand used for purifying the sample extracting solution passing through the purification layer. According to the multi-channel automatic purification device, a centrifugal machine is not needed for separating the sample extracting solution from the purification filler, the device is simple, and the production cost is low. And meanwhile, multi-channel efficient purification can be achieved, and the purification efficiency is greatly improved.

The invention provides a limiting device which is applied to a double-layer shock isolation device and comprises a body and two movable seat plates, the two movable seat plates are transversely arranged on the body in parallel, and the distance between the two movable seat plates is adjustable; and the two fastening bolts are respectively inserted into the same sides of the two movable seat plates, are vertical to the movable seat plates and are oppositely arranged. According to the limiting device and the double-layer vibration isolation device, the technical problem that an existing double-layer vibration isolation device is long in maintenance time is solved, the reinstallation process of the double-layer vibration isolation device is simplified, the reinstallation time of the double-layer vibration isolation device is shortened, and the working efficiency is improved.

The invention provides a lens mechanism, wherein the lens mechanism comprises a sleeve assembly,a first rotating ring and a second rotating ring; the sleeve assembly is provided with a sleeve main body, a first machine part and a second machine part; the first rotating ring is provided with a third machine part and the second rotating ring is provided with a fourth ring; the third machine part is connected to the first machine part in a sliding manner and is limited in the first machine part; and the second machine part is connected to the fourth machine part and is limited in the fourth machine part.

The invention relates to the technical field of cleaning, in particular to a cleaning mechanism and cleaning equipment, and aims at solving the problems that in the cleaning process, a cutter is low in controllability and prone to damage. The cleaning mechanism comprises a driving part, a rotating part connected with the driving part, and a cleaning part arranged on the rotating part. A transparent cover covers the rotating part, so that the use condition of the cleaning mechanism and the cleaning state of the cutter can be observed in time when the cutter is cleaned, the cutter can be effectively controlled in time in the cleaning process, the controllability of the cutter in the cleaning process is improved, and the damage probability of the cutter is reduced; and cutting chips can be prevented from splashing in the cleaning process to accidentally injure operators. A containing cavity used for containing the cleaning part is formed between the transparent cover and the rotating part, and the interval is formed between the cleaning part and the inner wall face of the transparent cover, so that collection of the cutting chips generated by cleaning is facilitated, and reduction or elimination of frictional wear between the cleaning part and the transparent cover is facilitated.

The invention provides an adjustable mechanical stroke limiting contact and device and an adjustment method of the contact. The contact comprises a striking rod (1), a sleeving connection body (2) anda rotating arm (3), wherein the outer side surface of the rotating arm (3) is provided with an outer gear (31), the sleeving connection body (2) is provided with a sleeving connection hole (21), theinner side surface of the sleeving connection hole (21) is provided with an inner gear (22) engaged with the outer gear (31), and the sleeving connection body (2) can be connected with the rotating arm (3) in a sleeving manner through the engagement of the inner gear (22) and the outer gear (31). According to the invention, the axial or radial position of the contact can be adjusted flexibly and effectively through adjusting the engagement of the outer gear (31) and the inner gear (22), and the limiting accuracy is improved. In addition, the contact can be disassembled easily, the operation issimple, the maintenance time can be effectively reduced, the production efficiency is greatly improved, the adjustable range is great, and the applicability is extensive.

The present invention discloses an optical assembly and an optical module. The optical assembly comprises an optical platform, a wavelength division multiplexing de-multiplexing optical assembly and an optical power monitoring device; the optical platform is provided with a plurality of optical ports and a reflecting portion; the optical power monitoring device is matched with the reflecting portion; the wavelength division multiplexing de-multiplexing optical assembly is located on the optical platform between the optical ports and the reflecting portion; the optical platform is provided with a limiting mechanism; and the wavelength division multiplexing de-multiplexing optical assembly is fixedly mounted on the optical platform through the limiting mechanism. According to the optical assembly and the optical module of the invention, an optical component on the optical platform is installed through adopting a passive installation mode and by means of the limiting mechanism, and therefore, debugging and positioning steps after an active installation mode are omitted, and assembling is simple; the optical platform is made by using integrated molding and has high limiting accuracy; the optical assembly is integrated with the optical power monitoring device, and therefore, the optical assembly can realize an optical power monitoring function; and the integration degree of the optical assembly and the optical module is high.