21results about How to "Eliminate installation errors" patented technology

The utility model belongs to the technical field of aluminum veneers, and particularly relates to a fluorine-carbon aluminum veneer which comprises a fluorine-carbon aluminum veneer body, connecting parts are symmetrically arranged on the two sides of the inner wall of the fluorine-carbon aluminum veneer body, and installation parts capable of being adjusted up and down are arranged on the connecting parts. The connecting component comprises two mounting seats fixedly connected to the inner wall of the fluorocarbon aluminum veneer body, an adjusting rod is fixedly connected between the two mounting seats, a plurality of annular clamping grooves used for clamping the mounting component are formed in the side wall of the adjusting rod, and the annular clamping grooves are distributed at equal intervals. When the fluorine-carbon aluminum veneer is installed, the fluorine-carbon aluminum veneer body is placed at a target position, and when an installation component does not coincide with a target installation point position, the position of the installation component is adjusted up and down to adapt to the reserved target installation point position, so that the installation error is eliminated, and the installation precision and speed of the fluorine-carbon aluminum veneer body are improved.

The utility model discloses a digital printing machine nozzle adjusting mechanism which comprises a bottom plate and a plurality of nozzles installed on the bottom plate, fixing blocks are fixedly connected to the positions, located on the two sides of the nozzles, of the top face of the bottom plate, the fixing blocks are in threaded connection with bolt rods, and conical heads are fixedly connected to the ends, facing the nozzles, of the bolt rods. A hole column is arranged on the spray head, a limiting square hole is formed in the spray head, the spray head is limited on the bottom plate through a limiting nail and a bolt, the limiting nail is fixedly connected with the bottom plate, the bolt is in threaded connection with the bottom plate, the bottom plate penetrates through the limiting square hole, and the bolt penetrates through the hole column. By controlling the distance between the conical head and the spray head, fine adjustment of the spray head in the left-right direction is successfully achieved, errors, caused by machining, transportation and the like, of installation of the spray head and the bottom plate are eliminated, the printing effect of the spray head is greatly improved, and the spray head is simple in structural arrangement, efficient and suitable for application and popularization.

The utility model discloses an anti-vibration stable automobile crank shaft. The anti-vibration stable automobile crank shaft comprises a main shaft, a crank arm, a brake mounting plate, a fixer and a fastener, the fastener comprises a fastening bolt and a fastening nut, non-return grooves are circumferentially distributed in one end face of the fastening nut at equal intervals, an installation groove is formed in the fixator, a sliding ring block is installed in the installation groove in a floating mode, non-return blocks are circumferentially distributed at the top end of the sliding ring block at equal intervals, and the non-return blocks extend out of the installation groove through groove openings and can be inserted into the non-return grooves. An unlocking piece is arranged on the fixer and is used for completely retracting the non-return block into the mounting groove; through the arrangement of the non-return block, the non-return groove and the sliding ring block, the non-return block can be driven by the inclined plane to enable a worker to normally rotate the fastening nut, and when the fastening nut is loosened, the fastening nut cannot reversely rotate to reset; and through the arrangement of a connecting block, a positioning straight groove and a second screw rod, the position of the mounting hole can be adjusted within a certain range, so that the mounting error is eliminated, and different requirements are better met.

The utility model discloses a multi-degree-of-freedom suspension bracket, and belongs to the technical field of medical instruments. A multi-degree-of-freedom suspension support comprises a supporting base, a telescopic rod, a rotating arm, a U-shaped clamp, a rotating disc connecting piece and a main machine connecting piece. The telescopic rod is installed on the supporting base, the rotating arm is horizontally and rotatably installed at the end of the telescopic rod, the U-shaped clamp is horizontally and rotatably installed at the end of the rotating arm, the rotating disc connecting piece is vertically and rotatably installed at the end of the U-shaped clamp, and the main machine connecting piece is fixedly connected with the rotating disc connecting piece. When a user adjusts the optical positioning system, the user only needs to push the optical positioning system. A complex positioning structure does not need to be used for fixing the suspension support, and a user can conveniently adjust the position of the optical positioning system.

This application relates to the field of tool measurement equipment technology, and in particular to a tool parameter measurement system and method. In use, a standard part is first clamped onto a tool pre-adjustment component. A moving assembly drives a first mounting component to move vertically and along a first direction, allowing the camera imaging device to focus on the zero-gauge surface of the standard part. A laser sensor is connected and installed on the first mounting component. Utilizing its rotational function around the first direction and its fine-tuning function along a second direction, combined with the mandrel surface of the standard part, the yaw angle and offset are calibrated to establish a unified linear laser measurement coordinate system. When the standard part is replaced with the part to be measured, the camera imaging device can be used to measure the projected dimensions of the part, or the laser sensor can be used to scan the spiral groove contour of the part and calculate the core diameter after coordinate transformation and filtering, or the laser sensor can be rotated to scan one revolution to obtain a point cloud and reconstruct a 3D model. The laser sensor can be disassembled and reassembled as needed, achieving integrated tool measurement and improving measurement accuracy.

The utility model discloses a module machine in the technical field of heat exchange. On the side where the water inlet pipe and the water outlet pipe are located, the module machine panel at least comprises a first panel body and a second panel body, and the first panel body and the second panel body are each provided with a water outlet pipe receding notch and a water inlet pipe receding notch. The water outlet pipe receding notch and the water inlet pipe receding notch are arc-shaped recesses formed in the side edge of the panel, the diameter of the water outlet pipe receding notch is matched with the outer diameter of the water outlet pipe, and the diameter of the water inlet pipe receding notch is matched with the outer diameter of the water inlet pipe. The first panel and the second panel are located on different sides of the axis connecting line of the water inlet pipe and the water outlet pipe, and the central angles corresponding to the water outlet pipe receding notch and the water inlet pipe receding notch are both smaller than 180 degrees. The water inlet pipe receding notches in the first panel and the second panel are used for allowing a water inlet pipe to penetrate through the panels, and the water outlet pipe receding notches in the first panel and the second panel are used for allowing a water outlet pipe to penetrate out of the panels. Due to the fact that the multiple panels are arranged, when the water outlet pipe, the water inlet pipe and the panels are matched, deformation of the panels can be reduced or avoided.

The present invention belongs to the technical field of current measurement, and specifically relates to a self-compensating button-type current detection device and a detection method thereof, wherein an upper end cover, a positioning plate and a package are fixed by bolts, and the upper end cover, the positioning plate and the package each have an arc-shaped groove to realize the positioning of a measured cable; a plurality of bosses with different heights are provided on the lower bottom surface inside the package, and each boss has a different distance from the inner wall surface of the package, a piezoelectric layer is fixed on the boss, a permanent magnet is fixed on the piezoelectric layer, all structures fixed on each boss are completely the same in size, and a single-chip microcomputer is fixed on the inner surface parallel to the central axis of a circular hole formed by four arc-shaped grooves; the present invention can measure direct current and alternating current, and can be self-powered, and has the characteristics of high linearity, high precision, simple structure, easy maintenance, wide application range, etc.

The utility model relates to the technical field of the repair and balance of aircraft APU, disclose a gear box oil separation gear balance fixture, including horizontal mechanism and setting at its top balance mechanism, both are connected through the lock catch, be equipped with battery main part and drive motor in horizontal mechanism, through the drive limit wheel and horizontal board bottom's rack structure meshing, drive horizontal board and balance mechanism to carry out automatic horizontal angle adjustment, and balance mechanism provides support through the rotation of connecting rod, utilize the clamping assembly fixed with the fixture mandrel of nut and is measured gear, and realizes axial locking through the cooperation of positioning rod and rotating rod. The utility model solves the problem that the existing dynamic balance measuring equipment relies on horizontal environment and the difficult problem of special-shaped gear clamping, can actively adapt to the non-horizontal operation environment, ensure that the balance mechanism is in the best measurement posture, and effectively eliminate the interference of the tool itself unbalance, significantly improve the precision and flexibility of dynamic balance measurement.

This invention relates to the field of process control technology in metal material forming, and discloses an optimized control method for a wheel hub liquid forging process. A punch displacement sensor and a liquid forging pressure sensor are set up to synchronously collect and calibrate displacement and pressure signals, and perform zero-point correction to obtain a displacement and pressure sampling sequence. The displacement change rate, pressure change rate, and effective compensation displacement increment are calculated, and the filling end and compensation evaluation termination intervals are obtained according to statistical thresholds. The effective compensation displacement is accumulated within the evaluation interval, and the pressure area is obtained by integrating the pressure to construct a smoothness index. The start time of secondary pressurization, platform pressure, and duration are discretized into a candidate set to generate a target pressure trajectory that meets the pressure change rate constraint and calculates the smoothness. Optimal parameters are screened and corrected, and the pressure command sequence is output and solidified for distribution to the hydraulic system, achieving quantifiable optimization and stable execution of parameters.

The invention provides a car window bracket mounting mechanism which is used for positioning a bracket on car window glass, the bracket is mounted at a preset position of the car window glass, the car window bracket mounting mechanism comprises a positioning table and an overturning component, the positioning table comprises a supporting piece and a positioning structure arranged on the supporting piece, and the positioning structure is used for positioning the car window glass; the overturning component comprises a reference part, a movable part and an alignment part, the reference part is connected to the supporting part, the movable part is movably connected to the reference part, the alignment part is connected to the movable part and can move along a preset path along with movement of the movable part, and the alignment part can align the bracket located at the preset position. And the bracket which is not in the preset position cannot be aligned. According to the car window bracket installation mechanism, alignment of the bracket can be achieved through the overturning component, the step of measuring car window glass is not needed, the assembly efficiency is improved, and installation errors are eliminated.

The utility model is suitable for semiconductor technical field provides a kind of fixed crystal swing arm device and fixed crystal machine, the above-mentioned fixed crystal swing arm device includes support seat, movable adjusting part, error correction structure and swing arm assembly, and fixed crystal machine includes the fixed crystal swing arm device of any one of the above-mentioned. The position of movable adjusting part in the first direction can be adjusted by error correction structure. When the accuracy of fixed crystal swing arm device appears error after installation, the position of movable adjusting part and swing arm assembly can be adjusted by error correction structure, so that the actual position of the part on swing arm assembly and the preset position of chip contact each other coincide, and then the purpose of eliminating installation error is realized. Compared with the fixed crystal swing arm device in prior art, when the error is corrected, the overall position of fixed crystal swing arm device does not need to be adjusted, only the movable adjusting part needs to be adjusted by error correction structure, so that the correction of error can be realized, and the correction adjustment of error is more convenient and fast.

The invention belongs to the field of aircraft structure fatigue tests, and particularly relates to a test piece displacement limiting device which comprises a test piece, a limiting device, a limiting switch and a limiting support. The limiting bracket is fixed on a supporting, loading or checking rack which is not changed relative to a test piece in position, the limiting device is adhered to the surface of the test piece, and the limiting switch is fixedly connected to the limiting bracket and is rotationally connected with the limiting device. The displacement of the test piece in any direction can be limited, and damage or destruction caused by excessive local deformation of the test piece structure is avoided; for the follow-up loading test, the relative displacement between the test piece and the loading structure can be limited, and the relative position between the test piece and the loading structure is kept unchanged; the limit switch bracket can ensure that the position of the limit switch can be adjusted in any direction, so that mounting and processing errors can be eliminated; the device is simple in structure and simple in manufacturing and mounting process.

The application relates to a detection method of a ball spline shaft raceway straightness detection instrument. First, a space relative coordinate system of a to-be-detected ball spline shaft is constructed through parameters of the to-be-detected spline shaft; a plane parallel to the head-tail frame center in the Y-axis direction is set as an X-Z plane, and an arbitrary point of the maximum outer circle of the ball spline shaft in the horizontal direction is taken as a coordinate system origin (0, 0); the spline shaft outer circle parameters are measured through a probe; the measured spline shaft is rotated, the probe is aligned with the raceway, and (x g0 , 0) is obtained; when the probe moves in the X-axis direction, n data points (x gi , z gi ) are obtained, and the real raceway (x i , z i ) is calculated; the data points (x i , z i ) are fitted through a least square method, a ball spline shaft raceway fitting straight line x=bz+a and specific deviation can be obtained. The application can detect the straightness deviation of the ball spline shaft raceway.

The present invention provides a non-contact coaxiality measurement method and system, the system includes a single-axis drive module, an industrial scanning device, a laser emitting device and a data processing module; the system is used to implement the following steps: obtaining structured light images of a measured part and a reference part; inputting the structured light images into an optimized three-dimensional reconstruction model, and extracting point cloud data of the measured part and the reference part using the optimized three-dimensional reconstruction model; according to the point cloud data of the measured part and the reference part, obtaining the cylindrical curve of the measured part and the cylindrical curve of the reference part, and using the common axis method to calculate the coaxiality of the two cylindrical curves as coaxiality measurement data. The laser scanning measurement form is adopted to realize non-contact measurement, simplify the measurement procedure, save measurement time, and the measurement process is simple and easy to implement.

The utility model belongs to the technical field of building decoration, and particularly relates to a decoration integrated plate assembly type integrated structure which comprises a base plate, a plurality of detachable decoration plates are arranged on one side of the base plate, and a buffering mechanism used for buffering the decoration plates is arranged in the base plate. An adjusting mechanism for adjusting four corners of the decorative plate is arranged on the outer wall of the decorative plate; elastic inserting pipes are fixed to the four corners of one side of the decorative plate, each elastic inserting pipe is formed by arranging a plurality of arc-shaped inserting plates in an equidistant array mode in the circumferential direction, first inserting grooves are formed in the positions, corresponding to the elastic inserting pipes, of the outer wall of the base plate, and first limiting grooves are formed in the inner sides of the first inserting grooves; according to the utility model, the decorative plate and the base plate can be quickly disassembled and assembled; external force impact energy can be absorbed, the impact resistance is improved, the service life is prolonged, the four corners of the decorative plate can be effectively adjusted, installation errors are eliminated, and the flatness of a decorative face is guaranteed.

The utility model discloses a filter stick launching pipeline switching device of a comprehensive test board. The filter stick launching pipeline switching device comprises a double-acting air cylinder, a base and a sliding block. A sliding groove is formed in the base, a bottom plate is fixed to the bottom face of the sliding groove, and a filter stick inlet connected with a filter stick launching device is formed in the bottom plate. The double-acting air cylinder is arranged on one side of the sliding groove, a piston rod of the double-acting air cylinder is connected with the sliding block, the sliding block is connected into the sliding groove in a sliding mode, two threaded holes are formed in the sliding block in the direction of the sliding groove, and launching tubes are connected into the threaded holes through hollow bolts. The double-acting air cylinder can drive the sliding block to do reciprocating motion along the sliding groove so that the filter stick inlet can be communicated with any transmitting pipe. According to the utility model, the filter sticks emitted by the sampling device can be shunted to two different comprehensive test benches. When different launching tubes are switched, positioning is accurate, and the situation that a filter stick is scraped and broken in the filter stick launching process is avoided.

The utility model relates to the technical field of display screen installation, and discloses an adjustable installation support of an LED display screen, which comprises a transverse slide rail, a longitudinal slide rail and a deflection support, the transverse slide rail is fixedly installed, the longitudinal slide rail is slidably installed on the transverse slide rail, and the longitudinal slide rail has a degree of freedom of moving along the length direction of the transverse slide rail. A mounting base is slidably arranged on the longitudinal sliding rail, the mounting base has the degree of freedom of moving in the length direction of the longitudinal sliding rail, one end of the deflection support is rotationally connected to the mounting base through a deflection shaft, the deflection axis of the deflection shaft is vertically arranged, and the other end of the deflection support is used for mounting an LED display screen. The installation position of the display screen can be adjusted within a certain range, the position of the LED display screen can be adjusted in the later period after installation is completed, installation errors can be eliminated, and the LED display screen can adapt to changes of use requirements.

The invention belongs to the technical field of helicopter horizontal measurement, and particularly relates to a helicopter fuselage horizontal measurement point installation error elimination method. Eight horizontal measurement points of the fuselage are symmetrically located on the two sides of the fuselage, and the other three horizontal measurement points of the fuselage are located on the Y0 axis of the bottom of the fuselage. Calibrating two determined horizontal measuring points on the electronic level meter and the subassembly fixture to obtain the positions of the other six horizontal measuring points; s2, bolt holes in the two Y0 axes of the bottom of the fuselage are determined on the subassembly fixture and marked as a mark point A and a mark point B, and a mark point C is obtained through fuselage calibration; through the method for eliminating the installation error of the horizontal measurement point, the installation precision of the horizontal measurement point on the fuselage is greatly improved, the installation error is eliminated, the precision of the measurement result of the horizontal measurement item is improved, and the reliability of the horizontal measurement result is ensured.

The invention relates to the field of valve structures, and discloses an electric gate valve which comprises a transmission component, a gate valve element and an abutting structure, and the transmission component is connected to a valve body; the gate valve element is connected to the inner side of the valve body in a sliding mode, and the output end of the transmission component is connected with the gate valve element. The abutting structure is hinged to the gate valve element and the transmission component so that the gate valve element can abut against the sealing valve port. The gate valve has the beneficial effects that when the transmission component moves the gate valve element to the bottom of the valve body, force is applied to the gate valve element through the abutting structure, and the gate valve element abuts against the sealing valve port; when the gate valve is opened and closed, only the abutting structure needs to be swung to relieve the abutting force on the gate valve element, so that the friction resistance when the gate valve is opened and closed is reduced, the abutting structure and the gate valve element are prevented from being seriously abraded after being used for a long time, the sealing effect is ensured, and the service life of the gate valve is prolonged.

The utility model provides a bedstead mounting structure, and belongs to the technical field of bedstead mounting. The installation structure comprises a supporting piece and a pin, the supporting piece is fixedly connected to the foot pipe, a plurality of inserting openings are formed in the supporting piece, a plurality of pin holes are formed in the transverse pipe, the transverse pipe is connected to the supporting piece in an inserted mode, the pin holes correspond to the inserting openings, and the pin penetrates through the pin holes to be connected into the inserting openings in an inserted mode. When the bed frame needs to be installed, the pins only need to be aligned with the pin holes and inserted into the insertion openings, rapid installation of the bed frame is achieved, when the bed frame needs to be disassembled, the pins only need to be taken out of the insertion openings and the pin holes, the operation is simple and rapid, the bed frame disassembling and assembling efficiency is greatly improved, and the left-right swinging direction can be limited after the pins are fixed; therefore, the bed frame is effectively prevented from shaking during use.