33630results about "Work holders" patented technology

The invention provides a cooperative measurement method and system for a laser tracker and a three-dimensional scanner, and the method comprises the following steps: designing a three-dimensional scanner clamp: designing the clamp, and placing a target ball; converting a measurement coordinate system of the three-dimensional scanner and a clamp coordinate system; calibrating a pose, namely a homogeneous transformation matrix, of the measurement coordinate system of the scanner relative to the measurement coordinate system of the laser tracker, and calibrating poses, namely homogeneous transformation matrixes, of the measurement coordinate system of the laser tracker and the clamp coordinate system; calibrating a pose, namely a homogeneous transformation matrix, of the scanner measurement coordinate system relative to the clamp coordinate system; a scanner clamp and equipment are installed, wherein the scanner clamp is installed, and a laser tracker and a laser scanner are installed; according to the working process, a laser tracker and three-dimensional scanner cooperative measurement method is used for carrying out high-precision measurement on a large-size cylinder section product. According to the technical scheme, the technical problems that in the prior art, a single measurement method has measurement limitation, and the measurement precision and the view field range are difficult to guarantee at the same time are solved.

The invention discloses an automatic air cylinder clamping system and method, and belongs to the technical field of air cylinder clamping, and the system comprises a map drawing module which is used for drawing a three-dimensional clamping force distribution map; the risk prediction module is used for synchronously predicting a deformation deviation risk value in the clamping process; the model calculation module is used for generating a dynamic attenuation coefficient; and the air cylinder adjusting module is used for dynamically adjusting the opening degree of a multi-stage cushion valve and the servo pressurization rate of the automatic air cylinder set through a self-adaptive control strategy till the clamping force error is stabilized within a preset threshold value. The technical problems that in the automatic air cylinder clamping process, due to environment interference and system errors, the clamping force is unstable, and the workpiece clamping precision is low are solved, and the technical effects that the clamping force stability is improved through dynamic compensation and self-adaptive adjustment, the deformation risk is reduced, and the clamping precision is improved are achieved.

The invention belongs to the technical field of automatic assembling, and particularly relates to an automatic angle valve assembling all-in-one machine and a working method thereof. Comprising an assembly table; an automatic assembler is arranged on the assembling table; the automatic assembler comprises an assembly line which is used for conveying valve bodies and assembling the valve bodies in the conveying process. The assembly line is mounted on the assembly table; the conveying base plates are all mounted on the transmission type assembly line; the valve body is placed on the conveying base plate; a table; the workbench is mounted on the assembly table; the gas-driven positioning unit is arranged on the workbench; the gas-driven positioning unit comprises two positioning clamping blocks; the mechanical arm only needs to complete the action of positioning and sleeving, so that the working strength and energy consumption of the mechanical arm are reduced, the screwing process is integrated on the clamping operation of the valve body, the limitation of a machine during assembly is reduced, and the assembly efficiency and effect of the machine are improved.

The invention discloses a curved surface stress detection method, which comprises the following steps of: 1, fixing a detected piece on an object placing table by using a self-adaptive clamp; step 2, scanning the measured piece to generate three-dimensional shape data of the measured piece; 3, calibrating the initial position of the measured piece by a displacement sensor, and establishing a coordinate system; step 4, adjusting the position of the measured piece by using a self-adaptive clamp, emitting X-rays to the measured piece by using an X-ray tube, and collecting diffraction signals by using a second detector; and step 5, the calculation module calculates the stress distribution state of the measured piece. According to the curved surface stress detection method, the problems of low irregular surface positioning precision and poor adaptability of traditional equipment are solved, and the detection efficiency and reliability are remarkably improved.

The invention relates to the technical field of laser detection equipment, and discloses an edge contour laser detector with a rotary table, the edge contour laser detector comprises a lathe bed, a detection clamp, the rotary table and a laser detection head, the detection clamp is installed at the power output end of the rotary table, and a driving part of the rotary table is located in the lathe bed and is provided with a driving unit for driving the driving part to drive the detection clamp to rotate; the laser detection head and the rotary table are both connected to a control unit, and the control unit is configured to control the driving unit to drive the rotary table to rotate by a corresponding angle according to a set detection path and control the laser detection head to perform static or dynamic scanning on a to-be-detected part of a workpiece clamped by the detection clamp so as to measure edge contour data of the workpiece; and the workpiece edge contour data is sent to the data processing unit for processing to obtain a measurement error, and the measurement error is sent to the display terminal. According to the invention, the detection clamp is provided with the rotary table, and the laser measurement technology is integrated, so that the high-precision, high-efficiency and omnibearing measurement of the blade edge can be realized.

The invention relates to the technical field of quartz crucible tools, in particular to a quartz crucible outer contour dimension detection tool which comprises a base, a fixing mechanism and an adjusting mechanism, a laser detector is arranged on the base, a movable disc is movably arranged on the base, a fixing shaft is fixedly arranged on the movable disc, and the quartz crucible outer contour dimension detection tool further comprises the fixing mechanism and the adjusting mechanism. The quartz crucible is centered and fixed on the base through synchronous movement of the fixing mechanism, it is ensured that the crucible is kept at the center position in the detection process, deviation or rotation is reduced, and therefore the measurement error is reduced, the position of the abutting block is adjusted through the adjusting mechanism according to the size of the inner wall of the quartz crucible, and it is ensured that the detection tool can adapt to quartz crucibles of different specifications. When the size of the quartz crucible changes, the detection tool is ensured to be always in close contact with the inner wall of the quartz crucible, and effective fixing and supporting are realized.

The invention discloses a three-jaw self-adaptive clamping device for a special-shaped workpiece, and belongs to the technical field of machining auxiliary equipment. The three-jaw self-adaptive clamping device comprises a base, three clamping jaws and a driving structure, wherein the three clamping jaws are annularly distributed in the radial direction of the base, and the driving structure is arranged on the base and used for driving the three clamping jaws to move in the radial direction so as to clamp or loosen a workpiece. The three-jaw self-adaptive clamping device further comprises gas-driven self-adaptive structures which are arranged on the sides, close to the workpiece, of the three clamping jaws correspondingly and used for being matched with the surface of the special-shaped workpiece so as to achieve clamping. According to the three-jaw self-adaptive clamping device for the special-shaped workpiece, through an air-driven self-adaptive structure composed of the fixing block, the air cylinder, the telescopic rod, the piston assembly and the reset piece, the surface of the special-shaped workpiece can be efficiently adapted, the problem that a traditional clamping device is poor in adaptability to the special-shaped workpiece is solved, air pressure self-adjustment can be achieved, and the situation that local clamping force is too large is avoided; and deformation of the thin-wall workpiece due to uneven stress is prevented.

The invention relates to the field of nuclear fusion, and discloses a fixing device for a nuclear fusion preassembled assembly, and the fixing device comprises a magnet connecting assembly which comprises a first beam body and a magnet connecting part, the first beam body extends in a first direction, and the magnet connecting part is arranged on the first beam body; the vacuum chamber connecting assembly and the magnet connecting assembly are spaced in the second direction, the vacuum chamber connecting assembly comprises a second beam body and a vacuum chamber connecting part, the second beam body extends in the first direction, and the vacuum chamber connecting part is arranged on the second beam body; the beam body connecting assembly is arranged at the two ends of the second beam body in the first direction, is connected with the first beam body and comprises a first connecting piece, a second connecting piece and an elastic energy storage piece, the first connecting piece is movably connected with the second connecting piece and is detachably connected with the first beam body, and the second connecting piece is detachably connected with the second beam body; one end of the elastic energy storage piece is movably connected with the first connecting piece, and the other end is movably connected with the second connecting piece. The gap between the magnet and the vacuum chamber can be restrained, and the position precision between the magnet and the vacuum chamber is guaranteed.

The invention discloses fire-fighting equipment rapid assembling equipment, and belongs to the technical field of fire-fighting equipment assembly.According to the fire-fighting equipment rapid assembling equipment, a fire hydrant is put into a positioner through a robot, and then the fire hydrant is rotationally transferred through a rotary feeding assembly, so that the operation of continuously putting the fire hydrant can be achieved by changing the position of the positioner; when the clamping assembly walks on the first half-moon strip and the second half-moon strip to generate extrusion motion, the clamping assembly clamps the fire hydrant for positioning, when the moving wheels move out of the arc-shaped strip, a polygonal rod of the transmission assembly drives a buckle to be clamped with a valve of the fire hydrant downwards, then a gear walks to the position of an arc-shaped toothed rod for transmission, and the fire hydrant is clamped in the arc-shaped toothed rod. The transmission assembly drives the buckle to rotate to tighten the valve on the fire hydrant, so that the fire hydrant is continuously put through rotation, the fire hydrant can be continuously assembled, the robot is matched for feeding and discharging, the assembling efficiency can be improved, operation is easy, and the cost is low.

The utility model discloses a flaw detection probe for a wind power rotating shaft, which belongs to the technical field of flaw detection and comprises a supporting base, clamping plates are arranged on two sides of the upper end of the supporting base, a main shaft is clamped between the clamping plates on two sides, a clamping mechanism is mounted on the supporting base, and the clamping mechanism drives the clamping plates on two sides to move inwards simultaneously to clamp the main shaft. A first ring body capable of sliding is arranged at the upper end of the supporting base, an inserting block is inserted into the outer wall, close to the upper end, of the first ring body, a detection probe is detachably connected to the upper end of the inserting block, clamping plates on the two sides are driven by an arranged clamping mechanism to clamp a main shaft, and then the clamping plate on one side is driven to rotate through rotation of a first driving motor; the second ring body is matched to rotate along with the main shaft, the detection probe performs sufficient flaw detection on the same position of the main shaft along with the rotation of the main shaft, and then the detection probe moves left and right at the upper end of the main shaft, so that sufficient flaw detection can be performed on the main shaft.

The invention discloses a methanol generator flywheel assembling device and method, and relates to the technical field of generator flywheel assembling. The flywheel assembling device comprises a lifting seat, a clamping seat is mounted at the top of the lifting seat, a first oil tank is mounted below the outer side of the clamping seat, a clamping assembly is mounted at the top of a piston rod in the first oil tank, a first corrugated pipe and a second corrugated pipe are connected to the bottom of the first oil tank, and a hammering seat is mounted at the top of the lifting seat. A hammering block is longitudinally and slidably installed on the side edge of the top of the hammering base, a telescopic connecting rod is rotatably installed at the center position of the bottom of the hammering block, the bottom end of the telescopic connecting rod is rotatably connected with the bottom of the hammering base, a hammering assembly is installed on the side wall of the hammering base, and a moving assembly is installed on the inner wall of the bottom of the hammering base. A traditional manual hammering flywheel installation mode is replaced, the flywheel installation efficiency is improved, the labor cost is reduced, and the labor intensity of workers is relieved.

The invention relates to the field of sealing detection, in particular to a high-pressure stop valve body sealing performance detection device which comprises a detection box body used for placing a valve body for observation and comprising a water tank, the water tank is arranged to be a U-shaped groove with an upward opening, and the bottom of the side of the water tank is fixedly connected with a mounting plate. An outer electric push rod is mounted at the top of the mounting plate; and the supporting assembly is arranged in the water tank, is used for bearing the valve body and comprises a cross beam, and limiting sliding rails are arranged on the two sides of the cross beam. Through cooperation of the first plugging assembly, the second plugging assembly and the supporting assembly, external bubble interference can be effectively avoided, two-way pressure detection is supported, and the detection accuracy and automation level are improved, so that the problems that in the prior art, in the detection process, non-leakage bubbles are generated, judgment of detection personnel is interfered, and the detection efficiency is improved are solved. And false detection or missing detection is caused. And due to limitation of one-way detection, the sealing performance of the valve body in a two-way pressure-bearing state is difficult to comprehensively evaluate.

An automatic tightening apparatus for a suction cup assembly. The apparatus comprises a suction cup assembly tightening apparatus bench and at least one tightening station, the tightening stations including a first automatic tightening station, a second automatic tightening station, a third automatic tightening station, a fourth automatic tightening station, and a fifth automatic tightening station which are sequentially mounted above the suction cup assembly tightening apparatus bench; and a tightening structure and moving module and a human-machine interface are provided above the suction cup assembly tightening apparatus bench. The beneficial effects are: by providing the tightening stations on the suction cup assembly tightening apparatus bench, sequentially arranging the tightening stations, and disposing the tightening structure and moving module horizontally, switching between the tightening stations can be achieved; the suction cup assembly tightening and assembly process is concentrated on the suction cup assembly tightening apparatus bench, the apparatus has a simple structure and a reasonable layout, and the area occupied by the tightening apparatus is reduced.

The invention discloses a decorative plate detection device for building decoration, and belongs to the field of building decoration, the decorative plate detection device for building decoration comprises a workbench, the bottom of the workbench is fixedly connected with four supporting legs, and the upper end of the workbench is provided with a flatness detection device. The flatness detection device is arranged to be in contact with the rollers through chain driving, so that tiny unevenness on the surface of the decorative plate can be accurately detected, especially in convex and concave areas. Clear and accurate detection results are ensured through automatic adjustment and marking of the marking pen, errors caused by manual operation are reduced through the automatic marking function, marking accuracy is higher, follow-up finishing and machining are facilitated, stability of the device is kept in the movement process through adjustment of the spring A and cooperation of the movable plate and the rolling wheels, and reliability of the detection results is ensured.

The invention relates to a detection system and method for a differential assembly, and the system comprises a detection platform which is provided with a clamp; the detection seat is arranged on the detection table in a lifting manner, and two vertically arranged detection rods are arranged on the detection seat; the detection needle is hinged to the bottom end of the detection rod, the lower end of the detection needle is in contact with the half axle gear end face, and the upper end extends to the detection seat; the displacement detection assembly is used for detecting the swing displacement of the upper end of the detection needle so as to represent the axial clearance and meshing jumping state of the half axle gear; the adjusting mechanism is used for driving the two detection rods to be far away from each other in the clamp when the detection seat presses the differential to be detected, so that the lower end of the detection needle is in contact with the end surface of the half axle gear; and the driving mechanism is used for driving one half axle gear in the differential mechanism to be tested to rotate. The axial clearance between the two half axle gears and the meshing run-out of the half axle gears can be detected through one-time installation, the detection function diversity is high, and the detection efficiency is also remarkably improved.

The invention discloses a large workpiece strain measuring point auxiliary positioning system and method, and the system comprises a professional software and automatic control system, and an industrial photogrammetry system, a car lifting system, a laser projection system and a three-dimensional scanning quantitative analysis system which are connected with the professional software and automatic control system. And a positioning target is arranged on the surface of the large workpiece product. According to the system, strain contact auxiliary lineation and laser guide assembly work of a large workpiece and quantitative analysis work of strain gauge pasting are achieved, the system takes a target arranged on a product as a positioning reference, the outline of a product model is extracted in a photogrammetry mode, the product model and a real object are matched and unified to the same coordinate system, and the product model and the real object are obtained. The position contour of the strain gauge needing to be pasted and auxiliary information are projected to the surface of a product through the laser projection technology, the current pasting position information can be efficiently and accurately reflected, and high-efficiency and high-precision assembly of the strain gauge is facilitated.

Disclosed is a retainer (10) for processing an optical workpiece. The retainer comprises a holding arrangement (72) and a support assembly (73) for the workpiece. A rubber-elastic membrane (75) mounted on a housing (74) has a retaining section (76), on the outer side (77) of which one surface of the workpiece can be placed to lie flat. The membrane, together with the housing defines a chamber (78) in which a plurality of separately longitudinally movable pins (79) of the support assembly are retained. A pin end (80) of each pin can be brought to bear against an inner side (81) of the retaining portion of the membrane and can be fixed relative to one another by a clamping mechanism (82) against longitudinal movement with respect to the housing. The holding arrangement for the workpiece is provided in or on the retaining section of the membrane.

The invention discloses a measuring instrument for measuring the roundness of an inner ring and an outer ring of an automobile hub bearing, and particularly relates to the field of bearing roundness measurement, the measuring instrument comprises a working table, a rotating disc is arranged on the upper surface of the middle of the working table, an adsorption cavity is embedded in the surface of the middle of the working table, and air holes are formed in the surface of the rotating disc; a driving gear is fixedly connected to the outer wall of the middle of the driving shaft, a blade fan shaft is arranged on one side of the inner wall of the adsorption cavity through a bearing, a blade fan gear is fixedly connected to the outer wall of the middle of the blade fan shaft, a spiral blade fan is fixedly connected to the outer wall of the top of the blade fan shaft, and a measurement supporting assembly is arranged on one side of the rotating disc. An auxiliary adjusting assembly is arranged on the side, away from the measurement supporting assembly, of the rotating disc. According to the device, the spiral blade fan can be automatically driven to rotate through the rotation of the rotating disc, so that the workpiece is adsorbed, no mechanical clamping trace exists, the hub bearing workpiece is fixed through the assistance of adsorption force, and the detection stability is improved.

The invention belongs to the technical field of flange detection, and particularly relates to a flange forge piece defect detection device and method.The flange forge piece defect detection device comprises a rotary clamping mechanism, a defect detection module, a force control executing mechanism, a marking mechanism and a control module, the defect detection module comprises an eddy current sensor and an ultrasonic probe, and the force control executing mechanism and the marking mechanism are also integrated on a shell; the control module is mounted in the electric control box; the eddy current sensor is used for monitoring a voltage fluctuation value in real time and generating a surface crack density coefficient through the control module; and the ultrasonic probe is used for monitoring an echo amplitude value in real time and generating an internal defect attenuation coefficient through the control module. By integrating the eddy current sensor and the ultrasonic probe, detection of surface cracks (voltage fluctuation monitoring) and internal defects (echo amplitude analysis) of the flange forge piece is synchronously achieved, the problem that the surface quality and the internal quality cannot be considered in a traditional single detection mode is solved, and the safety risk caused by missing detection of the defects is reduced.

The invention discloses a glass defect detection device based on machine vision, which comprises a bottom plate and a cross beam fixedly arranged on the top surface of the bottom plate through a support frame, a visual detection mechanism is arranged above the cross beam, glass is subjected to defect detection through the visual detection mechanism, and a storage mechanism is arranged on the top surface of the bottom plate. Glass detected to be qualified is placed through the storage mechanism, and vertical plates are arranged on the two sides of the top face of the bottom plate in a front-back sliding mode. According to the glass defect detection device based on machine vision, through the arrangement of the clamping mechanism, glass can be clamped and fixed, the purpose of double-sided defect detection is achieved by automatically controlling the glass to turn over, and the clamping mechanism can automatically discharge the glass into the storage mechanism after the glass detection is completed; therefore, the purpose of unified storage of qualified glass is achieved, manual blanking is not needed, and the working intensity and potential safety hazards are reduced.

The invention relates to the technical field of torque calibration, in particular to a torque calibration device which comprises a workbench, a calibration base is arranged at the top of the workbench, a calibration piece is installed in the calibration base, a waste collecting mechanism is arranged outside the calibration base, a side plate is arranged on one side of the workbench, and a transverse moving lead screw sliding table is arranged on the side plate. Two sliding tables are arranged on the transverse moving lead screw sliding table, a horizontally-arranged suspension frame is arranged on the sliding tables, lifting electric push rods are arranged on the suspension frame, a first mounting plate and a second mounting plate are mounted at the output ends of the two lifting electric push rods correspondingly, and four arc-shaped clamping blocks and a driving mechanism are mounted on the first mounting plate; a sweeping mechanism is mounted on the second mounting plate, transmission parts are arranged at the bottom of the first mounting plate and the bottom of the second mounting plate, and a control screen is further arranged on the workbench. The four arc-shaped clamping blocks are used for clamping the calibration piece, the stability of clamping the calibration piece is improved, and the accuracy of torque calibration is improved.

The invention relates to the technical field of vibration measurement, and particularly discloses a guide plate online dynamic amplitude anti-deviation laser monitoring device which comprises a fixing frame, a mounting groove is formed in the outer surface of the upper end of the fixing frame, a movable rod used for supporting a guide plate is fixedly connected to the inner side of the mounting groove, and a limiting assembly is arranged on the outer side of the movable rod. The limiting assembly comprises a notch formed in the outer surface of the guide plate, a limiting sleeve is fixedly connected to the outer surface of the movable rod, a pressing crack is formed in the outer surface of the limiting sleeve, and the limiting sleeve penetrates into the notch. By arranging the limiting assembly, when the position of the guide plate deviates, a limiting sleeve can play a role in correcting the deviation of the guide plate, so that the position of the guide plate is always in a proper position, and the influence of the position deviation of the guide plate on the measurement precision of the vibration amplitude of the guide plate can be reduced to a certain extent; and the monitoring error can be reduced to improve the monitoring precision.

The invention relates to the field of corrugated pipe connection, in particular to a corrugated pipe mechanical sealing device which comprises a mounting frame and a smearing mechanism arranged on the mounting frame, the smearing mechanism comprises a first arc plate and a second arc plate which are arranged below the mounting frame, and the first arc plate and the second arc plate can form a circular ring; a first arc-shaped toothed plate is slidably mounted on the first arc plate, a second arc-shaped toothed plate is slidably mounted on the second arc plate, the first arc-shaped toothed plate and the second arc-shaped toothed plate can form a toothed ring, the axis of the circular ring is the same as that of the toothed ring, the toothed ring can rotate on the circular ring, and a spraying head facing the corrugated pipe is mounted on the first arc-shaped toothed plate. The mounting frame is fixedly connected with a sealant storage box, the sealant storage box is connected with the spraying head through a conveying pipe, the conveying pipe is provided with a conveying pump, and the mounting frame is provided with a driving part used for driving the first arc plate and the second arc plate to be close to each other or away from each other. The problem that the connecting efficiency of the corrugated pipe is low is solved.

The invention discloses a positioning and clamping device for automobile part machining, and relates to the technical field of clamping equipment.The positioning and clamping device comprises clamping mechanisms, the clamping mechanisms are distributed and installed on a positioning disc, multiple sets of centering clamping grooves are annularly distributed in the positioning disc, two sets of parallel clamping grooves are further formed in the positioning disc in a penetrating mode, and each clamping mechanism comprises a rotating screw rod; the rotating screw is connected with the driving assembly, a first matching block and a second matching block are arranged at the two ends of the rotating screw respectively, a threaded sleeve is installed on the rotating screw in a meshed mode, a lifting frame is arranged on the threaded sleeve, and a telescopic air cylinder and a clamping assembly are installed on the lifting frame. The rotating screw is controlled to rotate through the telescopic rotating motor and the lifting frame, so that a centering clamping mode and a parallel clamping mode are switched, rapid power switching before and after clamping mode switching is achieved in combination with the power switching mechanism, power system arrangement is optimized, and clamping and positioning of parts of different shapes and different sizes are achieved.

The invention discloses an external thermal insulation and heat transfer testing device for a thermal insulation and decoration integrated plate, and relates to the technical field of thermal insulation and decoration integrated plate heat transfer testing. By arranging the longitudinal position adjusting assembly and the transverse position adjusting assembly, the positions of the first temperature measuring unit and the second temperature measuring unit are adjusted at the same time, that is, when the transverse position adjusting assembly adjusts the transverse positions of the first temperature measuring assembly and the second temperature measuring assembly, the first temperature measuring unit and the second temperature measuring unit are adjusted; the longitudinal position adjusting assembly longitudinally adjusts the positions of the first temperature measuring unit and the second temperature measuring unit at the corresponding positions at the same time, so that the first temperature measuring unit and the second temperature measuring unit are located at a plurality of temperature measuring points in the testing time period, and then temperature values in different areas of the outer wall of the heat preservation and decoration integrated plate are obtained. According to the multiple measured temperature values, the overall heat transfer performance of the heat preservation and decoration integrated plate can be analyzed, the local heat transfer performance of the heat preservation and decoration integrated plate can be known, and comprehensive analysis of the heat transfer performance condition of the heat preservation and decoration integrated plate is facilitated.

The invention discloses an auxiliary tool for a heat exchanger to penetrate through a tube bundle, belongs to the technical field of heat exchangers, and comprises a fixed bottom plate which is of a rectangular plate-shaped structure and used for supporting and placing the whole tool, and two limiting assemblies driven by an adjusting assembly to move are symmetrically arranged at the top end of the fixed bottom plate; and the adjusting assembly is arranged in a hollow structure in the fixing base, the fixing base is arranged above the fixing bottom plate, auxiliary moving assemblies are arranged between the two limiting assemblies at equal intervals and used for conducting auxiliary pipe penetrating work on penetrating pipe bundles, and the auxiliary moving assemblies and the limiting assemblies are arranged above the auxiliary moving assemblies and the limiting assemblies. The invention discloses an auxiliary tool for heat exchanger tube bundle penetrating. The arrangement of the adapting mechanism on the limiting assembly can carry out flexible adjustment work according to different sizes of the tube plates, so that the whole auxiliary tool can adapt to tube penetrating work of heat exchange tube bundle assemblies with different sizes, and therefore it is guaranteed that the use range of the whole auxiliary tool is wider.

The invention discloses a negative pressure leakage testing machine for detecting the sealing performance of a steel drum, and relates to the technical field of negative pressure leakage testing machines, the negative pressure leakage testing machine comprises a leakage testing machine body, the top of the leakage testing machine body is slidably provided with an air tightness detection device, and a steel drum to be detected is placed in the leakage testing machine body. According to the negative pressure leakage testing machine for detecting the sealing performance of the steel drum, the upper sealing air bag and the lower sealing air bag expand and make contact with an inlet of the to-be-detected steel drum, sealing of the to-be-detected steel drum is completed, the accuracy of sealing performance detection of the to-be-detected steel drum is improved, the to-be-detected steel drum is pressed into water in the water tank, and the sealing performance of the to-be-detected steel drum is improved. The leakage point continuously generates bubbles, so that the position of a defect point of the to-be-detected steel drum is conveniently determined, the to-be-detected steel drum is vibrated through contact between the pressing plate and the to-be-detected steel drum, an air film attached to the leakage point is loosened through vibration, bubble separation is promoted, bubbles are conveniently generated, and the detection accuracy is improved. Therefore, the defect points of the to-be-detected steel drum can be determined more quickly.

The invention discloses a heat preservation box and processing equipment thereof, and belongs to the technical field of heat preservation boxes. The heat preservation box comprises a box body and a box cover, the box body is formed by wrapping a heat preservation layer with an inner shell and an outer shell, and the heat preservation layer is wrapped with a box cover shell. An aerogel groove and a vacuum plate groove which are overlapped are formed in the heat preservation layer and filled with aerogel particles and a vacuum heat insulation plate respectively, and the surface of the heat preservation layer is sprayed with a nanometer aerogel coating and provided with a reflecting film. The box body is connected with the box cover through a supporting hinge, and is provided with a supporting piece, a roller, a limiting sinking groove, a flow guide channel and a residual volume space measuring system. The processing equipment comprises a bracket, a rotary power source, a rotary platform, a vibration unit and a filling device, and can realize uniform filling and compaction of aerogel particles. The problems that a traditional heat preservation box is poor in heat preservation performance, pressure is accumulated, and transportation is inconvenient are solved, and the heat preservation box is suitable for cold-chain transportation and other scenes.

The utility model relates to a molecular pump main shaft dynamic balance testing device, which comprises a platform, supports, a fixed seat, a motor and a driving wheel, the fixed seat is fixedly connected with the platform, the two supports are respectively arranged on the left side and the right side of the fixed seat, the supports are connected with the platform in a sliding mode, and the driving wheel is connected with the fixed seat in a rotating mode. And the motor is fixedly connected with the fixed seat and drives the driving wheel to rotate. According to the utility model, the rotating plate is rotatably connected with the fixed seat, the main shaft is buckled with the rotating plate after being placed, and then the rotating plate is fixed with the fixed seat, so that the main shaft is simple and convenient to mount and take out; for main shafts of the same specification, multiple times of adjustment are not needed, installation of the main shafts and the support can be completed only by adjusting for the first time and then rotating the hook plate to fix the clamping plate and the sliding seat, the main shafts are limited, the operation steps are few, and the efficiency of detecting multiple main shafts of the same specification is improved.