19results about How to "Guaranteed parallelism" patented technology

The utility model belongs to heat exchanger technical field, concretely relates to a heat exchanger double tube plate welding structural member. Heat exchanger double tube plate welding structural member includes: the tube side tube plate is provided with the boss at the right end part of the tube side board tube, is provided with the boss ring main part at the left end part of the shell side tube plate, is provided with the boss ring step at the left end part of the boss ring main part, the right end surface of the boss is with the left end surface of the boss ring main part coaxial contact, the inner side surface of the boss ring step is with the outer side surface of the boss adapts, the outer side surface of the boss ring step and the outer side surface of the boss are the welding position.

This utility model discloses a packaging mold for a suspended guide coil, relating to the field of mold packaging technology. The device includes a material carrier plate; the material carrier plate has a material-carrying cavity inside, and the top and bottom of the material-carrying cavity are respectively provided with a first mounting limiting groove and a second mounting limiting groove. The first and second mounting limiting grooves are respectively fitted with a first molding component and a second molding component, which support the top and bottom coils. A lead wire support assembly is provided below the bottom coil. The packaging mold for the suspended guide coil of this utility model, through the mutual cooperation of various structures / components in the lead wire support assembly, ensures the parallelism of the three lead wires during the packaging process, effectively avoiding deformation under external force and improving the packaging accuracy of the coil.

The utility model discloses a kind of inner measuring micrometer measuring surface parallelism assembly device, one side of its base is equipped with lock frame, the other side of the base of lock frame rear side is equipped with vertical plate, and left tight force screw and right tight force screw are equipped on vertical plate and are opposite;Lock frame clamps the scale sleeve of inner measuring micrometer to make the left measuring claw I and right measuring claw I of inner measuring micrometer be between left tight force screw and right tight force screw, and the top of each measuring claw is equipped with stick hole, and left measuring stick and right measuring stick are equipped with through clamp parallel clamping corresponding to left and right stick hole;Adjusting each tight force screw side portion of corresponding measuring claw is pressed to eliminate the fit gap between measuring screw and threaded shaft sleeve of inner measuring micrometer;Lower fixture and left measuring stick and right measuring stick are inserted in left and right stick hole, and each stick hole is removed clamp after firmly measuring stick is bonded with glue.Using the utility model, it is guaranteed that the parallelism of measuring surface generatrix when inner measuring micrometer is used meets the requirement of national standard.

The utility model discloses railway turnout switching equipment and a turnout hook-shaped external locking device thereof, which belong to the technical field of rail transit, and the turnout hook-shaped external locking device comprises a switch rail connecting iron component, a push-pull plate component, a connecting iron seat component and a lock hook, the push-pull plate assembly is connected with the switch rail connecting iron assembly and the connecting iron base assembly. The switch rail connecting iron assembly is connected with the connecting iron seat assembly; and the lock hook is connected with the connecting iron seat assembly. The turnout hook-type external locking device is simple in structure, convenient to install, reasonable in design, small in abrasion between parts, long in replacement period, small in later maintenance workload, high in adaptability to extension and retraction of a switch rail, beneficial to keeping parallelism between the external locking parts, capable of reducing frictional resistance during turnout switching, capable of improving reliability of turnout switching, and capable of being used for improving the reliability of turnout switching. And the workload of turnout maintenance is reduced.

The application belongs to the technical field of steam turbine rotor processing, in particular to a drill jig for steam turbine rotor steam balance hole processing, which comprises a drill jig body, a bushing, a quick-change drill sleeve, a cylindrical pin and a set screw; the drill jig body is provided with a rectangular groove in the thickness direction; both sides of the bottom of the drill jig body are provided with through holes; the bushing is fixedly connected to the inside of one side of the through hole; the inside of the bushing is provided with the quick-change drill sleeve. The drill jig body with a "door" type structure is matched with the rectangular groove, which can quickly realize the preliminary positioning of the drill jig at the edge of the impeller, the radially limiting of the outer circle of the impeller is matched with the symmetrical distribution of the cylindrical pin, the center of the quick-change drill sleeve is accurately aligned with the positioning line, and the hole position deviation problem caused by the positioning deviation in the traditional processing is avoided; at the same time, the set screw at the bottom is stably pressed against the surface of the impeller spoke through the threaded connection, so that the drill jig can remain stable during the drilling process and prevent displacement caused by vibration.

The utility model discloses deviation rectifying mechanism machine detection equipment which comprises a back roller assembly and a fixing plate, the back roller assembly comprises a first mounting seat and a second mounting seat, the first mounting seat is arranged on the fixing plate and comprises a first mounting plate and a second mounting plate, and the first mounting plate and the second mounting plate are arranged in a spaced mode in the Z direction; a first through hole and a second through hole are formed in the first mounting plate, a third through hole and a fourth through hole are formed in the second mounting plate, the first through hole and the third through hole are concentrically arranged, and the second through hole and the fourth through hole are concentrically arranged; the first roller and the second roller are arranged at intervals in the X direction, one end of the first roller is arranged in the first through hole, the other end of the first roller is arranged in the third through hole, and the first roller can rotate around the axis of the first roller; one end of the second roller is arranged in the second through hole, the other end of the second roller is arranged in the fourth through hole, and the second roller can rotate around the axis of the second roller.

A standard calibration frame for a crystal ingot bonding stage and a method for bonding 12-inch semiconductor crystal ingots are disclosed. The standard calibration frame includes a base that can be installed on the workpiece board station of the crystal ingot bonding stage and two calibration crossbars fixed on the base. The base is rectangular, and the two calibration crossbars are spaced apart along the length of the base. The distance from the end of any calibration crossbar to the longitudinal center line of the base is equal, and the line connecting the ends of the two calibration crossbars on the same side of the base's length direction is parallel to the length direction of the base. This invention can eliminate the influence of equipment wear and tear on the crystal ingot bonding accuracy, ensuring the quality of the final product.

The utility model provides a kind of compression tool, including bearing pedestal, compression mechanism, bearing pedestal has bearing surface;Compression mechanism includes support, pressure piece, driver, support is set on bearing pedestal, pressure piece is located in the side of bearing pedestal, pressure piece can be movably set on support along the direction perpendicular to bearing surface, driver is dynamically coupled with pressure piece connection.This utility model's compression tool can be used in the installation process of electrolytic cell lamination, after electrolytic cell lamination is placed on bearing pedestal, compression mechanism utilizes driver to promote pressure piece to the electrolytic cell lamination placed on bearing pedestal and is compressed, so that compression tool realizes the compression of electrolytic cell lamination by the thrust of driver, replace the original mode of gradually pre-tightening each screw rod using hydraulic wrench, to greatly improve work efficiency, while it is favorable to guarantee the parallelism of final electrolytic cell lamination, to improve the assembly quality after electrolytic cell lamination compression.

The application discloses a composite roller pressing mechanism and a composite roller pressing system, which comprise a roller pressing support, a driving roller rotatably supported on the roller pressing support, a driving roller driving device for driving the driving roller to rotate, a pressing assembly and a driven roller rotatably supported on an output end of the pressing assembly, the pressing assembly being used for driving the driven roller to move close to and away from the driving roller, and a parallelism adjusting device used for adjusting limit positions of two ends of the driven roller, which face one side of the driving roller. The parallelism adjusting device can adjust the limit positions of the two ends of the driven roller, so that when the driven roller cannot keep parallel with the driving roller, the parallelism adjusting device of one end of the driven roller is adjusted, the driven roller can keep parallel with the driving roller, different positions of the driving roller and the driven roller have the same composite pressure, and the composite degrees of different areas of an electrode sheet and a diaphragm are consistent.

The utility model discloses a longitudinal stretcher which is characterized in that a drying oven, a plurality of groups of stretching roller groups and a plurality of groups of driven roller groups are arranged on a rack, and speed differences exist among the stretching roller groups; at least one stretching roller set is arranged behind the drying oven in the advancing direction of the thin film; at least one stretching roller set and a plurality of driven roller sets are arranged in the drying oven, a preheating area and a heating area are arranged in the drying oven, the preheating area and the heating area are respectively provided with a heating module, the preheating area is provided with at least one driven roller set and at least one stretching roller set in the advancing direction of a film in a front-back mode, and the heating area is provided with a plurality of driven roller sets. According to the heating module, temperature compensation can be carried out on the end part of the main heating piece through the compensation heating piece, so that the temperature field distribution is more uniform, the temperature of the diaphragm in the width direction is consistent, the heating uniformity and the temperature uniformity are improved, local overheating or supercooling of the diaphragm is avoided, and the temperature control precision is high.

The utility model relates to the field of panel door, especially a double-panel fluorine-lined panel door with sealing air, which comprises a main body mechanism, an anticorrosion mechanism arranged around the main body mechanism, a guide mechanism arranged inside the main body mechanism, a transmission mechanism arranged at the upper end of the main body mechanism, and a sealing mechanism arranged at the upper end of the main body mechanism. The utility model prolongs the service life of the anticorrosion mechanism and the sealing mechanism extension device, solves the problem that the existing device adopts a single anticorrosion measure of corrosion-resistant metal material, which is expensive and may cause great economic loss due to the expansion of point corrosion to large-area corrosion perforation of duplex stainless steel or high-nickel-based alloy material over time.

The application relates to the technical field of atomic interference, and provides an atomic interference gravity measurement method with optical cavity assistance and a device thereof, so as to solve the problem that existing atomic interferometers face laser power consumption limitation no matter whether the atomic interferometers are commercialized or the precision of the atomic interferometers is continuously improved. The method comprises the following steps: constructing an optical cavity, wherein the optical cavity comprises a first cavity mirror for coupling Raman light, a second cavity mirror for focusing Raman light and a third cavity mirror for reflecting Raman light which are sequentially spaced, a first waist spot exists between the first cavity mirror and the second cavity mirror, a second waist spot exists at a position after the second cavity mirror focuses, the second waist spot is used for detecting a cavity field mode of the optical cavity through transmission light of the third cavity mirror, and the first cavity mirror, the second cavity mirror and the third cavity mirror are coaxial and constitute a standing wave loop of the optical cavity; and a vacuum cavity is arranged between the first cavity mirror and the second cavity mirror, and cold atom groups are prepared at the first waist spot where the vacuum cavity is located.

The application discloses a preparation method of a running trolley for a semi-circular-arc girder shore-to-ship crane, which comprises the following steps: dividing the running trolley into a plurality of module assemblies; assembling and manufacturing the module assemblies by adopting a forward jacking mode; processing the wheel holes in the module assemblies by adopting a one-time scribing processing mode; and controlling the vertical line precision of the inner opening of the wheel main plate and the lifting sheave main plate after the module assemblies are assembled with the large-angle inclined suspension beam by adopting a detachable adjustable support mode. The application reduces the additional workload caused by the size deviation in high altitude, and reduces the construction difficulty and safety risk.

The utility model provides a high-precision digital display depth gauge, which comprises a base, a shell, a gauge body, a movable gate, a fixed gate, a measuring rod and a display module, and is characterized in that the gauge body is longitudinally and fixedly connected to the top of the base, and the fixed gate is arranged on the gauge body; the upper end of the measuring rod is fixedly connected to the shell, and the lower end passes through a longitudinal measuring rod through hole formed in the base; the front end of the shell is provided with a movable grid mounting groove, at least two positioning columns arranged in the front-back direction are mounted in the movable grid mounting groove, and the movable grid is slidably connected to the positioning columns through mounting holes and connected and positioned with the movable grid mounting groove through structural adhesive. According to the high-precision digital display depth gauge provided by the utility model, the gap between the movable gate and the fixed gate can be adjusted, and the measurement precision of the digital display depth gauge can be effectively improved.

This invention discloses a micro-thrust measurement device and method. The micro-thrust measurement device includes a working base plate, a pivot and fixing module, a three-axis displacement stage, a torsion beam, a linear guide rail, a displacement sensor, a micro-thrust generator, and a counterweight. The linear guide rail is mounted on the working base plate and consists of a long guide rail and a short guide rail. The torsion beam is positioned between the long and short guide rails. Slider blocks are installed at the ends of both the long and short guide rails furthest from the torsion beam. The slider of the long guide rail houses a micro-thrust motor for measuring the micro-thrust, while the slider of the short guide rail houses a counterweight. The displacement sensor and the micro-thrust generator are respectively located on both sides of the long guide rail. The three-axis displacement stage is mounted on the torsion beam via the pivot and fixing module. This invention enables sub-millinewton-level micro-thrust testing of micro- and nano-satellite micro-propulsion systems. It is easy to operate, improves measurement accuracy, increases the measurement range of the testing system, and reduces costs.

A wide-temperature, high-precision optical acceleration sensing chip and acceleration sensor based on the principle of a microcavity interferometer are disclosed. The acceleration sensing chip includes a first substrate, a second substrate, and a third substrate. An optical fiber mounting base and a light-transmitting hole are formed on the first substrate. The chip is characterized by a single-mode optical fiber assembly fixed on the optical fiber mounting base. The end face of the single-mode optical fiber assembly is precision ground and perpendicular to the axis of the optical fiber core. The optical fiber mounting base is a stepped hole with a first stepped portion and a second stepped portion. The single-mode optical fiber assembly includes a glass sleeve disposed on the outer layer and a single-mode optical fiber disposed in the core. The first stepped portion, the second stepped portion, the end face of the glass sleeve, and the end face of the single-mode optical fiber are all perpendicular to the core axis of the single-mode optical fiber. The first stepped portion forms a first fit with the end face of the glass sleeve, and the second stepped portion forms a second fit with the end face of the single-mode optical fiber.

The utility model provides a device for controlling the parallelism of a workpiece, the workpiece comprises a pipe fitting and sealing plates to be welded on the two sides of the pipe fitting, the device comprises a bottom plate, fixing plates, positioning columns, a lower clamping plate and an upper clamping plate, the fixing plates are arranged on the two sides of the bottom plate in parallel, and the positioning columns are arranged on the fixing plates. The positioning column is arranged on the inner side of the fixing plate and used for positioning the position of a sealing plate, the upper clamping plate and the lower clamping plate are detachably connected to the upper position and the lower position of the inner side of the fixing plate respectively, and the lower clamping plate and the upper clamping plate are matched to act on positioning the pipe fitting. The positioning device is simple in structure and convenient to use, the upper clamping plate and the lower clamping plate are detachably connected with the fixing plate, the sealing plates can be clamped and locked, the pipe fitting can be positioned, the parallelism of the sealing plates on the two sides of the pipe fitting is guaranteed, the welding precision is improved, the manual positioning method in the prior art can be effectively replaced, the rejection rate is reduced, and the productivity is improved.

The invention provides heliostat cleaning equipment and a heliostat cleaning control method thereof, and is characterized in that the method comprises the following steps: (1) adjusting the cleaning equipment to a working posture; (2) a cleaning frame of cleaning equipment is adjusted to be parallel to the mirror surface of the heliostat in the horizontal direction; (3) adjusting the relative position of a cleaning frame of the cleaning equipment and the mirror surface of the heliostat in the vertical direction, and meanwhile, adjusting the cleaning frame of the cleaning equipment and the mirror surface of the heliostat to be parallel in the vertical direction; and (4) cleaning the heliostat by the cleaning equipment. Compared with the prior art, the heliostat cleaning device has the following advantages that when the cleaning device enters the range of the mirror surface and during subsequent cleaning, the parallelism and distance between the cleaning device and the heliostat mirror surface in the vertical direction and the horizontal direction can be guaranteed at the same time, and the heliostat is better protected in the cleaning process; 2, the height of the cleaning device is adjusted by stretching and retracting the vertical inner arm, the angle is not influenced when the height is adjusted, the cleaning device is not linked with other mechanisms, the control algorithm is simpler, the system response is faster, and the heliostat can be protected.