1079results about How to "Avoid scratches" patented technology

The invention provides stamping equipment for automobile engine oil pan production, and belongs to the technical field of oil pan stamping equipment. Which comprises a stamping equipment body and is characterized in that a lower die and an upper die are installed on the stamping equipment body, a first supporting frame is installed on one side of the stamping equipment body, and a second supporting frame is installed on the other side of the stamping equipment body; an automobile oil pan material plate is placed on the top of the first supporting frame. By arranging the auxiliary feeding mechanism and the auxiliary discharging mechanism, the auxiliary feeding mechanism can be utilized, workers do not need to make direct contact with an automobile oil pan material plate, the automobile oil pan material plate can be rapidly and stably transferred to the position between the lower die and the upper die, and accurate alignment can be achieved after transferring, and the automobile oil pan material plate can be reliably placed on the top of the lower die; and compared with a traditional manual handheld plate feeding mode, the feeding device is safer and more reliable.

The invention provides a back contact photovoltaic cell piece capable of preventing stacking scratch in a high-temperature passivation process. The back contact photovoltaic cell piece comprises a back contact photovoltaic cell piece body and a plurality of soft isolation protrusions located on the light receiving face of the back contact photovoltaic cell piece body. The soft isolation protrusions are used for supporting photovoltaic cells to be mutually isolated when the photovoltaic cells are stacked layer by layer, and the soft isolation protrusions are resistant to high temperature of 300 DEG C and do not become sticky or yellow within 3 hours. According to the invention, the soft isolation projections are arranged on the light receiving surface of the back contact photovoltaic cell sheet body to support mutual isolation of the photovoltaic cell sheets when the photovoltaic cell sheets are stacked layer by layer, so that the photovoltaic cell sheets can be protected from being scratched in the stacking and moving process; the flexible isolation protrusions are arranged on the back contact photovoltaic cell piece, the flexible isolation protrusions can be prevented from scratching the surface of the photovoltaic cell piece due to the specific flexibility of the flexible isolation protrusions, meanwhile, the flexible isolation protrusions can bear the passivation temperature of 300 DEG C or above and do not crack or yellow or adhere to the cell piece, and therefore it can be ensured that the back contact photovoltaic cell piece is subjected to high-temperature passivation in a multi-layer stacking mode, and the passivation efficiency is improved.

The utility model discloses an anti-deformation bearing thin-wall part machining supporting and fixing structure which comprises a base and a supporting assembly, a machining table is connected to the top of the base, clamping blocks are arranged on the two sides of the top of the machining table, and the supporting assembly is arranged in the machining table and comprises a bevel gear ring and a plurality of bevel gears meshed with the bevel gear ring. A lead screw is arranged in the machining table through a plurality of rotating frames, the surface of the lead screw is in transmission connection with a supporting plate through a lead screw nut, the supporting and fixing structure is provided with a supporting assembly, a driving motor drives a bevel gear ring to rotate, a plurality of bevel gears rotate synchronously, then the lead screw is driven to rotate, and the supporting plate ascends to support the interior of the thin-wall part; by means of the internal supporting mode, pressure and friction force borne by the inner wall of the thin-wall part during polishing can be effectively dispersed, deformation caused by lack of supporting is avoided, the size precision, the shape precision and the surface quality of the bearing thin-wall part are guaranteed, the product percent of pass is increased, and waste products are reduced.

The invention relates to the technical field of precision measurement and optical detection, and discloses a complex inner hole rapid detection method based on laser scanning. According to the method, full-automatic three-dimensional reconstruction of the special-shaped inner hole with the high depth-diameter ratio is achieved through cooperative movement of a rotating platform and an axial feeding laser measuring head in combination with triangulation method laser displacement sensing, multi-source data fusion and an environment compensation mechanism. According to the invention, a traditional contact type measuring means is abandoned, and a non-contact laser scanning technology is adopted, so that the problem of workpiece surface scratch or measuring head wear caused by physical contact is avoided; through cooperative movement of the rotating platform and the linear feeding mechanism, full-circumferential and full-depth coverage scanning of a complex inner hole is achieved, and the limitation that only discrete points or local information can be obtained through an existing method is solved.

The invention discloses an intelligent suspension conveying device for building material production, which comprises a cable rod, a traversing shaft is arranged in the cable rod, a lifting cable rack is arranged at the bottom of the traversing shaft, a maintaining mechanism is arranged in the lifting cable rack, and an anti-collision mechanism is arranged at the bottom of the maintaining mechanism. The auxiliary rotating shaft is rotationally connected to the inner wall of the lifting cable frame, the maintaining cable is wound around the outer circumferential face of the auxiliary rotating shaft, the main holding cable is wound around the outer circumferential face of the main rotating shaft, and the lifting cable frame is slidably connected with the inner wall of the transverse moving shaft. Therefore, the stroke weight of the host cable is dispersed, shaking of the pipeline in the transportation process is limited, and the stability and safety in the transportation process are improved.

The invention provides an intelligent transportation packaging box for composite materials, and relates to the technical field of packaging boxes, the intelligent transportation packaging box comprises an upper box, a lower box is arranged at the bottom end of the upper box, a limiting boss is fixedly mounted at the top end of the upper box, a limiting groove is formed in the bottom end of the lower box, and reinforcing ribs A and reinforcing ribs B are fixedly mounted on the surfaces of the upper box and the lower box; locking hasps are arranged at the positions, close to the centers, of the surfaces of the upper box and the lower box, and a handle is fixedly installed at the top end of the upper box. According to the packaging box, the upper box and the lower box can be attached more tightly through the sealing strip and the boss body, the sealing performance is improved, and the data acquisition system can monitor and record the transportation state of the packaging box in real time, record the transportation track and the transportation speed of the packaging box and record the opening time and the opening frequency of the packaging box; the internal temperature change of the packaging box and the vibration condition of the packaging box are recorded, practicability is high, and advancement is remarkable.

The invention discloses an anti-deformation high-strength inspection well prefabricating mold which comprises a base, an outer mold assembly is slidably mounted on a top plate of the base, an inner mold assembly is mounted at the position, in the center of the outer mold assembly, of the base, a demolding assembly is mounted in the inner mold assembly, sliding assemblies are mounted on the two sides of the bottom of the outer mold assembly, and sliding ways are mounted at the positions, corresponding to the sliding assemblies, of the base. The sliding assembly is slidably arranged on the slide way. Through the longitudinal reinforcing ribs and the transverse reinforcing ribs, a stable net-shaped reinforcing structure is formed, side pressure generated on the arc-shaped outer formwork in the concrete pouring process can be effectively dispersed, damage such as bending, deformation and cracking caused by uneven stress of the arc-shaped outer formwork is avoided, the structural stability and deformation resistance of the mold are remarkably improved, and the service life of the mold is prolonged. The reinforcing rib forming grooves which are perpendicularly crossed are formed in the inner side wall of the arc-shaped outer formwork, corresponding outer wall reinforcing ribs can be formed on the outer wall of the inspection well during concrete pouring, and the structural strength of the formed inspection well is effectively enhanced.

This invention relates to a composite polishing structure design and polishing method for wafer-level polishing processes. The composite polishing structure design includes a disk body with a positioning groove at the center of its upper end. An upper Tesla groove, a lower Tesla groove, and an annular channel are arranged on the disk body around the positioning groove. The upper and lower Tesla grooves are arranged in a circumferentially spaced array and extend radially. The upper and lower Tesla grooves are arranged vertically and circumferentially adjacent. The inner ends of both the upper and lower Tesla grooves penetrate the positioning groove, and their outer ends penetrate the outer circumferential surface of the disk body. The annular channel is arranged in a radially spaced ring around the disk body and penetrates both the upper and lower Tesla grooves. This invention forms an integrated fluid guidance and waste chip discharge channel through the double-layer Tesla grooves, improving the utilization efficiency and chip removal capacity of the polishing fluid.

The utility model discloses a photovoltaic cell EL defect sorter, and relates to the technical field of sorters. Comprising a sorter main body, the sorter main body is provided with a photovoltaic cell EL defect detection mechanism, the detection mechanism comprises a moving assembly, the moving assembly comprises an opening groove formed in the top end of the sorter main body, a positioning rod is fixed to the inner wall of the opening groove, and a sliding rail support is slidably connected to the outer wall of the positioning rod; after the camera lens is detected, the protective shell is screwed on the bolt rod on the outer side of the camera lens, the camera lens is protected through the protective shell, external physical collision and scraping can be effectively resisted, tools, parts and other hard objects are prevented from directly impacting the lens under the daily operation, maintenance or unexpected conditions of equipment, and the camera lens is protected. The surface of the lens is prevented from being scratched and damaged, the optical structure integrity of the lens is protected, the definition and accuracy of a detection image are guaranteed, and pollution of impurities and dust is prevented.

The utility model relates to the technical field of automobile door panel processing, and discloses a welding tool for assembling an automobile door panel, which comprises a machine body, a fixed adjusting component and a protective component are arranged above the machine body, the fixed adjusting component comprises a rectangular frame, and a door panel body is placed on the upper surface of the rectangular frame. According to the welding tool for assembling the automobile door panel, through combination of an air cylinder and a rubber pad, stable clamping of a door panel body is achieved, the rubber pad protects the surface of the door panel from being damaged, the adaptability of equipment to door panels of different sizes is enhanced through a limiting rod and a swing piece, the height of a rectangular frame is adjusted through a traction rope, and the door panel is accurately positioned; the welding assembly supports double-face welding, the efficiency is greatly improved, a protective curtain and a collecting frame are matched with a breathable grid plate, welding smoke is effectively extracted and filtered, the air quality is improved, the health of operators is guaranteed, residues are conveniently collected and discharged through the design of a scraper, impurity retention is avoided, the welding process is optimized through the overall structure, and the production efficiency, the environmental protection property and the safety are improved.

The utility model relates to a prefabricated column hoisting installation auxiliary device which comprises a lower-layer frame and an upper-layer frame, the lower-layer frame and the upper-layer frame are fixedly connected through four pieces of vertical angle steel, the lower-layer frame, the upper-layer frame and the four pieces of vertical angle steel are connected to form a frame barrel-shaped structure, and the caliber of the frame barrel-shaped structure is consistent with the size of a prefabricated column. A big-end-up cup opening frame is fixed to the top of the upper-layer frame, the upper portion of the cup opening frame is larger than the prefabricated column, levers are installed on the periphery of the cup opening frame, and idler wheels are arranged at the bottoms of the levers. When the auxiliary device is used, the device is positioned and placed according to a cup opening hole in the top of a cup opening foundation, the caliber position of the cylindrical structure of the frame is located in the center of the cup opening hole, the prefabricated column is aligned with the caliber of the upper-layer frame through the levers on the periphery, and then the prefabricated column continues to be put down; the prefabricated column is placed in the cup opening hole along the cylindrical structure of the frame, so that the prefabricated column is placed in the center of the cup opening hole, positioning is accurate, and operation is easy.

The application provides a small blood oxygenator, belonging to the technical field of oxygenators, which comprises a shell, an oxygenator core body arranged in the shell, an upper end cover and a lower end cover respectively arranged on the vertical two sides of the shell, a liquid inlet connector connected to the lower end of one side of the shell, a liquid outlet connector connected to the upper end of the other side of the shell, an air inlet connector connected to the upper end cover, an air outlet connector connected to the lower end cover, and the liquid inlet connector, the liquid outlet connector, the air inlet connector and the air outlet connector are respectively connected with corresponding external channels through a butt joint structure. The application solves the problem that the air inlet, the air outlet, the liquid outlet and the liquid inlet of the existing small oxygenator are mostly connected with the corresponding external pipeline through a wire connection method when in use, and the positions of the air inlet, the air outlet, the liquid outlet and the liquid inlet are mostly connected with each other through a rubber ring to realize the leakage prevention function, the leakage prevention effect is not good, leakage may occur, and the normal use of the oxygenator cannot be guaranteed.

The utility model relates to a kind of lead-acid battery plate production technical field, specifically related to a kind of lead-acid battery plate coating device. Including frame, two symmetrical coating mechanisms of upper and lower setting are installed in frame one side, and roller mechanism is installed on the frame of coating mechanism side, it is characterized in that, two supporting rollers are rotatably arranged on the frame of roller mechanism side, outer smearing edge mechanism, inner smearing edge mechanism and cleaning mechanism are sequentially arranged between the two supporting rollers. The device integrates coating, rolling, smearing and cleaning functions, and the full-process treatment of coating can be completed by single pass of the grid, avoiding deformation or pollution of lead paste caused by multiple handling, significantly improving the production yield and efficiency of the plate.

The utility model discloses a boring tool for an inner spherical surface of a flange hole, and belongs to the field of machining. A boring tool for the inner spherical surface of a flange hole comprises a boring tool rod and a molded surface boring tool. The boring cutter rod comprises a conical boring cutter rod handle and a rotary cutter rod connected with the boring cutter rod handle, a screw hole matched with the blind rivet is formed in the end of the boring cutter rod handle, a square hole used for installing the molded surface boring cutter is formed in the rotary cutter rod, a bolt used for fastening the molded surface boring cutter is arranged on one side of the square hole, and a threaded hole matched with the threaded hole is formed in the other side of the square hole. The profile boring cutter is specially designed in structure according to the inner spherical surface of a flange hole. Complex machining of the inner spherical surface of the flange hole can be completed at a time, multi-procedure errors are avoided, the size and shape precision is guaranteed, the requirement of a drawing is met, traditional step-by-step machining can be replaced, the tool changing frequency and the clamping time are reduced, efficiency is greatly improved, and production cost is reduced.

The application discloses a driving wheel rotating structure, which comprises a rotating mechanism, a mounting plate, a rotating support assembly and a roller assembly, wherein the rotating mechanism comprises a rotating shaft, a gear and a rotating disc, the gear is fixedly connected to the end of the rotating shaft, and the rotating disc is provided with a gear ring which is engaged with the gear; the upper surface of the mounting plate is provided with a second bearing, the lower surface of the mounting plate is provided with a third bearing, and the rotating shaft penetrates through the second bearing and the third bearing; the rotating support assembly comprises a first support seat and at least one first bearing arranged in the first support seat, and the first support seat is located between the mounting plate and the rotating disc; and the roller assembly is fixedly connected with the rotating disc and rotatably connected with the rotating support assembly. The second bearing and the third bearing are arranged to form a double support structure of the rotating shaft, thereby improving the stability of the rotating shaft and avoiding the driving wheel from being stuck during the steering process.

This utility model relates to a simple adhesive application device suitable for dispensing machines, comprising a housing with a cleaning port at the top and a partition installed inside the housing. Below the cleaning port, the partition has a contact adjustment block with several adjustment holes, connected to the partition via adjustment screws. The partition divides the housing into a storage space and a control space. On one side of the storage space, a feeding mechanism and a winding mechanism are installed, each connected to an adhesive strip. On the other side of the control space, a feeding drive and a winding drive are installed. Thus, the device, through its adjustable contact adjustment block, can accommodate the end-face cleaning of flat nozzle dispensing heads and the wrap-around cleaning of immersion needle dispensing heads, meeting the cleaning needs of different types of dispensing heads.

The application discloses an automatic mobile phone cleaning device with atomization cleaning and rapid drying functions, which comprises a rack main body, a clamping positioning mechanism arranged in the middle of the rack main body, an atomization mechanism comprising a cleaning liquid storage device and an atomization nozzle, a cleaning mechanism comprising a cleaning bottom plate, a brush and a fiber cloth piece, and a drying mechanism comprising a centrifugal fan. The cleaning mechanism realizes up-down reciprocating movement through a gear and rack transmission device. Two groups of ball screw transmission modules are connected with the clamping positioning mechanism and the cleaning mechanism respectively to drive the clamping positioning mechanism and the cleaning mechanism to move linearly. A control module is integrated with a single-chip microcomputer, a stroke sensor, a driving motor and a power supply control. The application improves the cleaning efficiency and use safety, simplifies the structure, reduces the cost and is suitable for household and commercial scenes.

The application discloses a high-precision optical lens production grinding device, relates to the technical field of optical lens grinding, and comprises a grinding box and a connecting table arranged on one side of the grinding box. The inside of the grinding box is provided with a grinding assembly. The top of the connecting table is provided with a driving assembly. The driving assembly is used in cooperation with the grinding assembly. An adjusting assembly is connected to the driving assembly. The bottom of the grinding box is provided with a reflux filtering assembly. The reflux filtering assembly comprises a reflux box arranged at the bottom of the grinding box. The bottom of the reflux box is provided with a leakage hole. A bushing is arranged on the outer wall of one side of the reflux box. The high-precision optical lens production grinding device disclosed by the application can improve the cleanliness of the recycled grinding liquid, thereby guaranteeing the grinding effect of high-precision optical lenses.

The utility model discloses a nylon hinge convenient for adjusting torsion of a spring. The nylon hinge is characterized by further comprising an adjusting device which is arranged in a first hinge seat and a second hinge seat and enables the first hinge seat and the second hinge seat to be automatically opened or closed by adjusting the torsion; the adjusting device comprises limiting sleeves arranged in the two ends of the first hinge base and the two ends of the second hinge base, a positioning sleeve, a rotating rod penetrating through the limiting sleeves and used for adjusting torsion, and a torsional spring with one end connected with the rotating rod and the other end connected with the positioning sleeve. When the rotating rod rotates, the torsion spring is driven to deform, the larger the rotating rod rotates, the larger the deformation of the torsion spring is, and the larger the torsion between the first hinge seat and the second hinge seat is, so that the larger the opening and closing force of a part which is connected with the first hinge seat and the second hinge seat and needs to rotate is; the requirements on the opening and closing force of the hinge in different use scenes can be met.

The application provides a cable core coating forming device for cable processing and relates to the technical field of cable core coating. The device comprises a main body, size adjusting assemblies are symmetrically arranged in the mold, a resisting plate is fixed at one end of the size adjusting assembly, a plurality of delivery wheels are symmetrically arranged in the mold, an arc adjusting assembly is arranged in the delivery wheel, a cleaning assembly is arranged in the fixing seat, and a plurality of cleaning wires are fixed at equal angles on one side of the cleaning assembly. The meshing transmission of the bevel gear and the bevel gear ring can realize the synchronous rotation of the two-side lead screws, and then drive the synchronous displacement of the moving column, the fixing frame, the delivery wheel and the resisting plate, so that the reliable straightening of the cable core can be realized, the central clamping of the cable core can be realized, the cable core can always move linearly along the center of the mold, and the technical defects of the eccentric coating layer, the uneven thickness and the like caused by the bending, the deflection and the shaking of the wire core are solved.

The utility model discloses a circuit board structure integrated with a monitoring module, which belongs to the technical field of circuit boards and comprises a protection box, a pair of limiting frames are fixedly connected to the bottom in the protection box, and a circuit board is arranged between the pair of limiting frames. The protection box, the limiting frame and the box cover are arranged, the circuit board is placed on the limiting frame in the protection box, the limiting frame can transversely limit the circuit board, element damage caused by shaking is prevented, the box cover can be opened and closed at the top of the protection box, and the box cover is matched with the protection box to block external interference. The circuit board is prevented from being scratched by daily slight touch, stable signal transmission is effectively guaranteed, the limiting assembly and the transmission assembly are arranged, when the box cover rotates to be closed, the linked transmission assembly operates ingeniously and drives the limiting assembly to work, the limiting block slides out of the limiting frame rapidly and is stably blocked at the top of the circuit board, the circuit board can be further stabilized, and the service life of the circuit board is prolonged. Damage caused by vibration or displacement in the protection box is prevented, and the overall reliability of equipment is improved.

The utility model relates to the technical field of parking garage equipment, and discloses intelligent lifting and transverse moving type three-dimensional parking garage equipment which comprises a bottom plate, a plurality of sets of installation columns distributed at equal intervals are fixedly installed on the rear side of the surface of the bottom plate, and two sets of second vehicle-mounted plates are arranged on the surface of the bottom plate. The three sets of first vehicle-mounted plates are arranged above the second vehicle-mounted plate, lifting devices are arranged on the three sets of first vehicle-mounted plates, the second vehicle-mounted plate and the first vehicle-mounted plates can be reasonably distributed and achieve transverse movement, position adjustment of a vehicle between different parking spaces is facilitated, a servo motor drives a lead screw to rotate, and the vehicle-mounted plates are driven by a servo motor to rotate. The first threaded sliding blocks and the second threaded sliding blocks on the lead screw can stably move up and down under guiding of the limiting grooves, the first vehicle-mounted plate is fixedly installed between the two sets of second threaded sliding blocks, and the stability and accurate positioning of the first vehicle-mounted plate in the lifting process can be guaranteed through connection of the fixing plate and the fixing frame; lifting and storing of vehicles are facilitated, and using safety and reliability are improved.

The utility model discloses a strong magnetic force button relates to button technical field, including female buckle and sub button, is equipped with the mounting groove on female buckle, and the strong magnet is bonded in the mounting groove, and is equipped with iron quality protruding on sub button, and iron quality protruding inserts the strong magnet in mounting groove and will iron quality protruding adsorb fixed, and is equipped with V type folding plate on female buckle and sub button, and V type folding plate is used for installing female buckle and sub button at the bag mouth of suitcase, can cooperate with the pincers pressure technology through setting V type folding plate, realizes quick installation, and eliminates the insufficient place of the seam line and riveting technology, and the hardness of V type folding plate is improved through setting the metal ceramic wear -resisting layer, avoids the scratch and the corrosion, can disperse the pincern pressure through setting temporary flexible high polymer protection film, and the indentation is left in flexible high polymer protection film, and there is no residue after peeling, avoids the indentation and leaves on V type folding plate.

The utility model belongs to electromechanical equipment technical field especially relates to a kind of electromechanical equipment surface polishing device, including polishing machine main body, the front end of polishing machine main body is fixedly installed with polishing head, dust hood is movably installed below the polishing head, the side surface of dust hood is equipped with air pipe for connecting fan, the inside of the polishing machine is equipped with buffer mechanism.The electromechanical equipment surface polishing device, dust removal mechanism is matched by fan, dust hood, rubber ring and spring one, adsorbs dust, enhances sealing, adapts to different surface, solves dust pollution and other problems;Buffer mechanism uses the floating design of spring two to unload force, reduces impact force, reduces polishing wheel wear, protects equipment, while the setting of ball in polishing machine reduces the friction between components, improves operating stability and smoothness while extending the service life of equipment.

This utility model discloses an anti-loosening screw inspection and sorting device, including a main body of equipment, a bearing component installed inside the main body of equipment, a transmission component installed at the bottom of the bearing component, a screening component installed at the top of the main body of equipment, and a cleaning component installed inside the main body of equipment. The bearing component includes a first rotating shaft rotatably connected inside the main body of equipment, a transparent panel coaxially fixedly connected to the top of the first rotating shaft, a plurality of circular grooves equally spaced on the top of the transparent panel, springs fixedly connected to the inner walls of the plurality of circular grooves, and first panels fixedly connected to the tops of the plurality of springs. The plurality of first panels are slidably disposed on the inner walls of the circular grooves. This utility model can realize the autonomous rotation of anti-loosening screws, improve inspection efficiency, and at the same time avoid scratching the surface of the transparent panel during sorting.

This utility model discloses a self-lubricating bearing ring for new energy vehicle transmission, including an outer bearing ring. A circulation pipe is snapped into a groove in the outer bearing ring, and the circulation pipe is tightly attached to a first groove, which is formed on a snap-fit ​​block. This utility model utilizes the fact that solid lubricant is typically embedded in the inner bearing ring material. During bearing operation, due to friction and temperature changes, the lubricant in the ring is gradually released to the friction surface. The lubricating film effectively reduces direct metal-to-metal contact, thereby reducing the coefficient of friction and wear rate. The lubricating film can also absorb some heat, helping to control the bearing temperature rise. The three-layer protection of the first, second, and third dustproof rings effectively prevents dust from entering, thus improving the bearing's lubrication efficiency and service life. The circulation pipe contains a heat-absorbing solution, which can significantly improve the heat dissipation capacity of the outer bearing ring, slowing down bearing material fatigue and performance degradation.

This utility model discloses a freeze dryer that facilitates loading and unloading of materials, belonging to the field of freeze dryer technology. It includes a freeze drying chamber with a loading mechanism at the lower inner side. A freeze drying plate is provided on one side of the loading mechanism, with a through hole at the top. A glass door is provided on one side of the freeze drying chamber, and a placement mechanism is provided at the bottom of the chamber. The loading mechanism allows the bottom plate to slide within two slide rails. By aligning the connecting posts of the two freeze drying plates vertically and inserting the insert block at the bottom of the upper connecting post into the second insert hole of the lower connecting post, the two freeze drying plates can be stacked and connected. The bottom freeze drying plate is then inserted into the first insert hole of the bottom plate in the same way, allowing multiple freeze drying plates to be stacked on the bottom plate. The bottom plate is then inserted into the slide rails and secured with a pin. When items need to be removed from the freeze drying plates, simply pull out the pin and pull out the bottom plate. By connecting multiple freeze drying plates and then pulling out the bottom plate, loading and unloading materials is convenient.

The utility model discloses a laser rangefinder for lifting a table board, which comprises a shell and a laser ranging module arranged in the shell, the shell is provided with a probe hole for laser to penetrate through, the shell is also provided with a notch part, the inner side of the notch part comprises a first reference surface and a second reference surface which extend in different directions, and the first reference surface and the second reference surface are arranged on the shell. The extension direction of the first reference surface is perpendicular to the extension direction of the probe hole. According to the lifting table, the ground clearance of the lifting table board can be accurately measured through the laser range finder, whether the lifting table board is inclined or not can be conveniently judged, and the laser range finder can be rapidly positioned on the lifting table board so that measurement can be conveniently conducted. In addition, the utility model further discloses an electric lifting table provided with the laser range finder.

This application relates to a housing structure for an aviation battery management unit, including a first housing and a second housing. The first housing includes a first component plate, a first frame, a snap-fit ​​protrusion, and a limiting member. The second housing includes a second component plate, a second frame, and a snap-fit ​​plate. The second frame and the peripheral wall of the positioning groove form a positioning opening for placing the circuit board interface, eliminating the need for tilting the circuit board during installation. The first and second housings are positioned by abutting against the ends of the second frame and the first frame and the inner wall of the limiting member, and are fixed by the engagement of the snap-fit ​​plate and the snap-fit ​​protrusion, without requiring the second housing to be completely embedded into the first housing. Therefore, the assembly and disassembly process is convenient and quick, preventing the reinforcing ribs and other structures on the housing from scratching the circuit board, effectively preventing damage to the components on the circuit board, and improving safety during use.