355results about How to "Simple mechanical structure" patented technology

The invention discloses a limited micro-space pile foundation construction method based on a multifunctional pile machine, and belongs to the technical field of constructional engineering pile foundations. The limited micro-space pile foundation construction method comprises the following construction steps that S1, a matched drilling tool is selected according to the type of a pile foundation, wherein the type of the pile foundation at least comprises one of a cast-in-situ bored pile, a stirring pile, a high-pressure jet grouting pile and a threaded expanding body steel pile; s2, pile machine equipment is assembled and placed in place, wherein the pile machine equipment comprises a main machine assembly, a drilling rig assembly, a power head assembly and a multi-channel telescopic drilling rod; and S3, pile foundation construction is conducted, specifically, corresponding pile machine equipment and auxiliary equipment are started according to different pile foundation technologies to conduct pile foundation construction. According to the multifunctional pile machine, various pile foundation types can be constructed on one pile machine, the power head with the multi-channel flow divider and the multi-channel telescopic drill rod are matched, so that the pile machine can achieve efficient and environment-friendly pile foundation construction in a limited space, the adaptability and the integration degree of equipment are improved, continuous work in construction is reduced, and the construction efficiency is improved. And the construction efficiency is improved, and various geological conditions and construction requirements can be met.

The invention provides a visual rock-soil multi-field coupling direct shear creepmeter which comprises a shear box device, a loading device, a temperature control device, a disturbance load device, a seepage control device and a microstructure tracking device, the shear box device is used for loading a rock-soil sample, the loading device comprises a normal loading device and a shear loading device, and the temperature control device is used for controlling the temperature of the normal loading device. The temperature control device comprises a dry-wet cycle device and a freeze-thaw cycle device, the disturbance load device comprises a plurality of vibration motors, the seepage control device comprises a water inlet control assembly and an electronic measuring cylinder, and the microstructure tracking device comprises a micro camera and an X-CT scanner. The visualized rock-soil multi-field coupling direct shear creepmeter provided by the invention can realize rock-soil direct shear creep tests under multi-field coupling of a dynamic seepage field, a dynamic stress field, a dynamic temperature field, a dynamic moisture field, a dynamic water chemical field and the like.

The invention relates to the field of glass product production, and discloses an electric heating segmented temperature control material channel and application thereof in molded glass bottle production, and the electric heating segmented temperature control material channel comprises a material channel body and a cover body covering the material channel body. The material channel body is of a segmented structure and at least comprises an inlet section, a middle section and an outlet section, the interior of the cover body is divided into a plurality of heating subareas, and the heating subareas are isolated through partition plates; the heating subareas are respectively provided with an independent heating device and an independent temperature control device, the temperature control device comprises a control algorithm module, and the power of the heating device is dynamically adjusted by detecting the temperature of the heating subareas in real time so as to keep the glass blocks reach a set temperature range in the conveying process of the material channel body; through segmented temperature control design and a dynamic adjustment algorithm, the temperature of the glass material block can be accurately controlled, the glass bottle forming quality is improved, energy consumption is reduced, diversified production requirements are met, and good industrial application value is achieved.

The utility model discloses a wood processing production line which comprises a first saw cutting mechanism, a first edge skin separating mechanism, a pushing-over mechanism, a second saw cutting mechanism, a second edge skin separating mechanism and a third saw cutting mechanism. The first sawing mechanism, the first edge skin separating mechanism, the pushing-over mechanism, the second sawing mechanism, the second edge skin separating mechanism and the third sawing mechanism are connected in sequence. The utility model belongs to the field of wood processing and production, can achieve edge skin removal, squaring and slicing of wood, is high in automation degree, does not need manual assistance, and improves production efficiency and safety.

The invention discloses a line drive type biped robot leg structure which comprises a thigh support, a knee joint motor is arranged at the lower end of the thigh support, a shank support is connected to an output shaft of the knee joint motor, a foot assembly is movably connected to the lower end of the shank support and comprises a foot fixing piece, and a heel is connected to the rear portion of the foot fixing piece. The heel is connected with a line driving structure, the line driving structure comprises a first ankle joint motor, a second ankle joint motor, a first driving line wheel, a second driving line wheel, a first ankle joint line wheel and a second ankle joint line wheel, and a first transmission line is arranged between the first driving line wheel and the first ankle joint line wheel; a second transmission line is arranged between the second driving line wheel and the second ankle joint line wheel, a first crank swing rod structure is arranged between the first ankle joint line wheel and one side of the heel, and a second crank swing rod structure is arranged between the second ankle joint line wheel and the other side of the heel. The device has the advantages of being simple in structure and good in adaptability.

The utility model relates to the technical field of material transfer, in particular to a multi-station material transfer mechanism which comprises a machine frame and n material stopping stations sequentially arranged on the machine frame in the X direction, the X direction is the transfer direction, a moving piece capable of moving in the X direction is arranged on the machine frame, a jacking piece is connected to the moving piece, and the n material stopping stations are arranged on the machine frame. Each stopping station is provided with a first sensor used for sensing materials, and the rack is provided with a second sensor used for sensing the position of the moving piece. Only two driving parts, namely the moving part and the jacking part, are needed, so that materials discharged from the numerical control machine tool can be orderly transferred among the stations, and the materials machined from the numerical control machine tool and the materials fed to a conveying line are transferred, stopped and transferred; the problem of high transfer difficulty caused by the time difference between the discharging of the numerical control machine tool and the feeding of the conveying line can be solved, and the device has the advantages of simple mechanical structure and low failure rate.

The invention relates to the technical field of laser welding, in particular to automatic laser welding equipment for an aluminum alloy automobile battery shell. Comprising an equipment frame; a bottom plate is fixedly mounted on the equipment frame, and a conveying mechanism and a welding mechanism are arranged on the bottom plate; conveying, feeding and machining of the battery shells and conveying and discharging of the welded battery shells are achieved on the conveying mechanism, so that manual operation is reduced, the production and machining continuity of the battery shells is guaranteed, the two battery shells are welded at the same time, the welding and machining efficiency of the battery shells is improved, and the labor intensity of workers is reduced. The fixed battery shell is driven by the driving part to rotate, the welding assembly is driven by the guiding part to adjust the position left and right, continuous welding is guaranteed, the structure is simple, and the manufacturing and maintaining cost is reduced.

The present invention provides a four-arm unpacking robot for carton boxes and an automatic unpacking method, wherein the robot comprises a workbench, a horizontal lead screw nut motion mechanism, a vertical bracket, a vertical lead screw nut motion mechanism, a swing flip mechanism and an elastic clamping mechanism; the workbench comprises two horizontal motion mechanism mounting plates and a work platform; the horizontal lead screw nut motion mechanism is mounted on the horizontal motion mechanism mounting plate, and one of the vertical brackets is provided at each end of the horizontal lead screw nut motion mechanism; the vertical lead screw nut motion mechanism and the elastic clamping mechanism are mounted on the vertical bracket; the swing flip mechanism is mounted on the vertical lead screw nut motion mechanism; the swing flip mechanism is used to flip the swing cover of the carton box to open the box; and the elastic clamping mechanism is used to fix the position of the carton box when opening the box. The present invention solves the problem that the prior art cannot automatically unpack the formed carton box.

The utility model provides a multi-specification oral liquid bottle boxing device which comprises a rack, a middle-layer frame is arranged above the rack, a box conveying line is arranged on the middle-layer frame, a bottle conveying line is arranged on one side of the box conveying line, a top-layer frame is arranged above the middle-layer frame, and a transverse moving force is arranged on one side of the top-layer frame. According to the device, each grabbing head is provided with an independent motor, the distance can be freely adjusted, the device can easily adapt to diversified product sizes, the universality and market competitiveness of the device are enhanced, and the device is convenient to use, high in practicability and suitable for large-scale popularization and application. The problem that in the background technology, each grabbing head cannot be freely adjusted is solved.

The present invention relates to a ceramic blank rolling machine. It relates to the technical field of ceramic manufacturing and forming equipment, including a first die base rolling assembly and a second die base rolling assembly symmetrically installed on both sides of a bearing plate, a motor support fixedly installed in the middle of the bearing plate, a servo motor fixedly installed on the motor support for the rotation of a V-shaped rolling arm, the output shaft of the servo motor is fixedly connected with the first rolling arm and the second rolling arm, the end of the first rolling arm away from the servo motor is installed with a first rolling head motor, the end of the second rolling arm away from the servo motor is installed with a second rolling head motor, the unique design of the V-shaped rolling arm can precisely control the up and down stroke of the V-shaped rolling arm through the servo motor; for the rolling of some special-shaped ceramic blanks, the accuracy is higher, the first rolling head motor and the second rolling head motor are respectively arranged at both ends of the V-shaped rolling arm, and the servo motor is executed by a microprocessor to control the stroke, so as to realize the rolling of double rolling head motors, which is efficient and energy-saving.

The invention provides an automobile door system, an automobile and a control method, and relates to the technical field of automobile manufacturing. The vehicle door system comprises a front door and a rear door, the front door is a double-wing door, and the rear door is a double-wing door or an electric vertical hinged door. The front door is connected with the vehicle body through a first conversion device, and the first conversion device is used for converting the opening mode of the front door between an electric scissor door opening mode and an electric vertical hinged door opening mode; when the rear door is a double-wing door, the rear door is connected with the vehicle body through a second conversion device, and the second conversion device is used for converting the opening mode of the rear door between an electric side-by-side door opening mode and an electric swing door opening mode; and when the rear door is an electric vertical hinged door, the front end of the rear door is rotationally connected with the vehicle body. According to the method, the requirements of different customer groups are met, and the driving experience feeling and the getting-on and getting-off safety of the user are obviously improved.

An automobile hub bearing comprises a hub bearing body and an inflation device, the hub bearing body is composed of an inner ring (1), an outer ring (2), a main shaft (3), a steel ball (4), a retainer (5), a wheel side sealing ring (6) and an automobile body side sealing ring (7), and the outer ring (2) comprises an air channel with an air inlet (21). The inflating device comprises a ventilation pipe column (11) and a sealing component, the ventilation pipe column (11) penetrates through a disc-shaped flange (31) of the main shaft (3) and is connected with the disc-shaped flange (31) in a sealing mode, and the sealing component is used for keeping the space between the inner side end of the outer ring and the disc-shaped flange sealed. The sealing component comprises an outer ring inner diameter inner side sealing mechanism and an outer ring outer diameter sealing mechanism. The outer ring inner diameter inner side sealing mechanism is a wheel side sealing ring of the hub bearing. The automobile hub bearing is simple in mechanical structure, low in manufacturing cost and high in machining realizability, and the necessary waterproofness, airtightness and gyroscopic moment of the whole device can be guaranteed.

The invention discloses an intelligent garbage classifying, compressing and recycling device, and relates to the technical field of garbage classifying and recycling devices.The intelligent garbage classifying, compressing and recycling device comprises a shell box body, a garbage feeding opening is formed in the top of the shell box body, and a bag breaking mechanism is arranged under the garbage feeding opening; a screening groove connected with an oscillating mechanism is arranged under the bag breaking mechanism, a shifting wheel is arranged in the screening groove, a master control system is arranged below the screening groove, an ejection type conveying belt is arranged on the left side of the screening groove, and a fan, a vacuum suction cup set connected with a movable telescopic mechanism and the telescopic mechanism are arranged above the ejection type conveying belt. A compression mechanism is arranged below the ejection type conveying belt; according to the device, garbage bag breaking, conveying, classifying and compressing can be fully automatically completed, the preliminary classifying effect is remarkable, the functions are comprehensive, and the universality is high; the mechanical structure is simple and reasonable, and the popularization value is high.

The invention provides a dexterous manipulator fused with an ontology visual perception function, and belongs to the technical field of electromechanical control. The depth camera is arranged in the palm, the size of the device is remarkably reduced, the size of the device is closer to the size of a human hand, and therefore flexibility and naturalness are improved, the depth camera and a control system are highly integrated, the structure is simplified, synchronism of visual data and hand actions is improved, operation precision is improved, the dexterous manipulator has 16 degrees of freedom, and the flexibility and the reliability of the device are improved. The system is completely driven by a steering engine, the operation flexibility and the fine action execution capability are greatly improved, the requirements of complex tasks are met, the production and maintenance cost is effectively reduced through optimization design and reduction of external accessories, multiple objects are positioned at the same time through a developed instance-level multi-target positioning method and by using a neural network, pre-training is not needed, and the operation efficiency is improved. The space perception capability of the dexterous hand is further improved, and the autonomous operation capability of the dexterous hand in a complex environment is enhanced.

The invention relates to a cable climbing robot with an automatic clamping force adjusting function. The cable climbing robot is used for climbing and detecting stay cables such as suspension bridges and cable-stayed cables. Comprising a driving device, a driven device, a sliding rail device, a clamping force adjusting device and an electronic control device. The driving device and the driven device are located on the two sides of the inhaul cable respectively and distributed oppositely to clamp the inhaul cable. The two ends of the sliding rail device and the two ends of the clamping force adjusting device are connected with a driving device and a driven device of the robot respectively, and the sliding rail device is used for preventing dislocation between the driving device and the driven device of the robot and allowing the driving device and the driven device to move along the sliding rail so as to adapt to clamping of inhaul cables with different diameters. The clamping force adjusting device comprises a buffering device, a tension measuring device and a tension adjusting device, and the clamping force adjusting device is matched with the electronic control device, so that the robot can automatically adjust the clamping force of the inhaul cable. According to the technical scheme, the device is simple in structure, convenient to disassemble and assemble and capable of achieving effective crawling on inhaul cables with different diameters and automatic adjustment of clamping force.

The invention relates to the technical field of wind power utilization, in particular to a wind speed self-adaptive triboelectricity-electromagnetic induction hybrid wind-driven generator based on an inertia driving conversion mechanism, which comprises a base, an induction power generation structure, a planetary gear structure, a friction rotor structure, a friction stator structure and a wind power conversion mechanism, the induction power generation structure is located above the base and connected with the base in a clamped mode, the planetary gear structure is located above the induction power generation structure, the friction rotor structure is connected with the induction power generation structure and the base in a clamped mode, the friction rotor structure surrounds the planetary gear structure, and the friction stator structure surrounds the friction rotor structure. The wind power conversion mechanism penetrates through the friction stator structure and is fixedly connected with the planetary gear structure. The wind energy collecting device has the efficient wind energy collecting effect.

The invention provides an aluminum / steel dissimilar metal laser melting-brazing method, and belongs to the technical field of dissimilar metal precision connection. The melting-brazing method adopted by the method is between melting welding and brazing, the high-strength structure of melting welding and the good wettability of brazing are combined, and a high-strength welding joint can be obtained. According to the method, firstly, slope-shaped grooves are machined in the butt joint sides of the to-be-welded aluminum plate and the to-be-welded steel plate correspondingly, then welding is conducted, compared with vertical face butt joint welding, the mechanical property of a connector is improved, and the air hole defect is effectively restrained; the synergistic effect of the slope-shaped half-lap-joint groove and laser melting-brazing organically unifies a welding structure and metallurgical regulation and control, improves geometric and mechanical structures, interface metallurgical reaction, microscopic component segregation and welding defects of aluminum / steel plate butt welding, and obtains a melting-brazing joint with excellent microstructure and mechanical properties.

The objective lens converter comprises a rotating disc used for installing an objective lens, the upper surface of the rotating disc is provided with an annular upper groove used for containing a ball, the lower surface of the rotating disc is provided with an annular lower groove used for containing the ball, and the rotating disc is provided with an initial position flag bit; the upper cover is arranged above the turntable and is provided with an annular cover plate groove and an inner annular flange; an output shaft of the stepping motor is directly coupled with the center of the turntable; a mounting hole is formed in the base, and an annular guide rail is arranged on the base; the magnetic encoder is installed on the stepping motor and used for controlling the rotation angle of the stepping motor; the first photoelectric switch sensor is mounted in the cover plate groove of the upper cover; and the second photoelectric switch sensor is arranged in the cover plate groove of the upper cover. According to the invention, the response speed and positioning precision of objective lens conversion are improved.

The invention discloses a pressure roller control system of horizontal type bead filler laminating equipment. The pressure roller control system comprises a touch screen module, a programmable controller module, a pressure roller laminating parameter setting module, a formula function module, a pressure parameter setting module, a position parameter setting module and a communication connection device, the touch screen module is used for providing a touch screen for touch interface control for the compression roller control system, and the touch screen module is connected with the programmable controller module; the programmable controller module is used for controlling the step sequence of pressing a tire bead by a pressing roller in the pressing roller control system, and the programmable controller module is connected with the pressing roller pressing parameter setting module; the compression roller pressing parameter setting module is used for controlling compression roller pressing parameters for pressing a tire bead by a compression roller in the compression roller control system, and the compression roller pressing parameters comprise compression roller pressing position parameters and compression roller pressing pressure numerical value parameters; according to the scheme, automatic regulation and control of the position of the compression roller and accurate control of the pressure of the compression roller can be realized through cooperation of a plurality of units and circuits.

The utility model discloses a movable blocking device for a four-way shuttle vehicle and an elevator. The movable blocking device for the four-way shuttle vehicle comprises a fixed base used for fixing a movable blocking device body; the blocking mechanism is used for blocking the four-way shuttle vehicle, the blocking mechanism is rotationally connected with the fixed base, and the blocking mechanism has a blocking state and a blocking releasing state; one end of the reset mechanism is connected with the fixed base, the other end of the reset mechanism is connected with the blocking mechanism, and the reset mechanism is used for driving the blocking mechanism to rotate and reset; when the pushing mechanism reaches the position of the blocking mechanism, the pushing mechanism pushes the blocking mechanism to rotate and release the blocking state, and when the pushing mechanism leaves the position of the blocking mechanism, the blocking mechanism rotates and resets to form the blocking state. The problem that goods or the four-way shuttle vehicle falls to a goods shelf due to errors of an automatic system in the process that the four-way shuttle vehicle changes layers through an elevator is solved.

The invention relates to the technical field of cell slide making, in particular to a full-automatic liquid-based cell slide making machine which comprises a transfer module, a cell enrichment module, a pipette tip module and a slide making module which are sequentially arranged. And the transfer module is arranged above the cell enrichment module, the pipette head module and the slide preparation module. The transferring module comprises a mechanical arm and a liquid sucking and injecting mechanism, and the liquid sucking and injecting mechanism is fixedly installed on the mechanical arm. The cell enrichment module comprises a centrifugal rotating disc, a first driving device, a waste liquid pouring device and a self-balancing assembly. The waste liquid dumping device is composed of a sample bottle push rod, and the sample bottle push rod can push the sample bottle bearing seat to enable the sample bottle bearing seat to swing along the shaft. Through cooperative arrangement of the transfer module with the liquid suction and injection mechanism and the cell enrichment module, the pelleter which is high in automation degree, compact and simple in structure and high in success rate is obtained.

The utility model discloses a mechanical device for splitting cattle into halves, which comprises a rack, a plurality of rotating shafts, a plurality of rotating shafts, a plurality of rotating shafts and a plurality of rotating shafts, the lifting system comprises a lifting driving mechanism and a lifting executing mechanism; wherein the lifting executing mechanism can be driven by the lifting driving mechanism to move up and down between the top plate and the bottom plate; the first translation system is mounted on the lifting execution mechanism, and the first translation system comprises a first translation driving mechanism and a first translation execution mechanism; the first translation executing mechanism can be driven by the first translation driving mechanism to move horizontally in the longitudinal direction of the rack; the second translation system is mounted on the first translation executing mechanism, and the second translation system comprises a second translation driving mechanism and a second translation executing mechanism; the second translation executing mechanism can be driven by the second translation driving mechanism to move horizontally in the transverse direction of the rack; and the cutter system is installed on the second translation executing mechanism and comprises a cutter and a cutter driving mechanism, and the cutter driving mechanism drives the cutter to operate.

The invention relates to the technical field of power grid protection, in particular to a power transmission line electric shock type bird repelling device which comprises a cross beam fixedly arranged on a telegraph pole and further comprises a power generation assembly, a power-off communicating vessel and an electric shock assembly which are arranged on the cross beam, and the power generation assembly comprises a power generator, a wind wheel and a chuck which are coaxially and fixedly connected with an input shaft of the power generator; the power-off communicating vessel comprises a high-position pipe and a low-position pipe, the bottom ends of the high-position pipe and the low-position pipe are connected to form a U-shaped communicating vessel, a buoy is movably arranged in the high-position pipe, a plurality of limiting holes allowing the buoy to be inserted are formed in the chuck, the electric shock assembly comprises a plurality of power grid mechanisms, and each power grid mechanism comprises a plurality of discharge rods, a cleaning rod and a driving rod. According to the bird repelling device, the wind wheel is used for generating electricity to conduct electric shock bird repelling, work can be automatically stopped in rainy days, and the service life of the device is prolonged.

The utility model relates to gas monitoring technical field, specifically disclose a kind of underground gas storage leak monitoring device, including box, air guide mechanism and gas detector;The air guide mechanism includes ventilating cylinder, fan blade and drive mechanism, and the ventilating cylinder includes fixed section and movable section;The drive mechanism is used to drive fan blade to rotate ventilation in ventilating cylinder and drive movable section to rotate around vertical shaft;Gas detector is arranged in the box and detects the gas in ventilating cylinder.The utility model drives ventilating cylinder to realize one hundred and eighty degrees reciprocating swing by drive mechanism, cooperates the fan blade negative pressure adsorption of air guide mechanism, compared with passive diffusion monitoring, significantly improve gas capture efficiency, shorten the leakage response time, and the detection range is expanded from single point to surface domain and direction.By worm simultaneously drive bevel gear set and worm wheel, only one power source can realize gas suction and direction adjustment, simplify mechanical structure, reduce the fault node, improve system operation reliability.

The utility model relates to the technical field of raw material smashing devices, and discloses a raw material smashing device which comprises a smashing box, a motor is fixedly connected to one side of the smashing box, the output end of the motor rotationally penetrates through the side wall of the smashing box and is fixedly connected with a smashing assembly, and a fixing plate is fixedly connected to one inner side wall of the smashing box. Two electric cylinders are fixedly connected to one inner side wall of the crushing box, a push plate is slidably connected to the top of the crushing box, the output ends of the two electric cylinders are fixedly connected with the two ends of the push plate correspondingly, and a fixed box is fixedly connected to one side of the top of the crushing box; by arranging the crushing assembly and the electric cylinder, raw materials are placed on the top of the fixing plate and slowly move towards the crushing assembly at a constant speed, the crushing assembly rotates at a high speed, then the raw materials are crushed step by step, the mechanical structure is simple, operation is easy, the crushing efficiency is high, and the simple, convenient and efficient crushing effect is achieved.

The present invention relates to the technical field of gear hobbing equipment, and specifically discloses a gear hobbing device and method for gear box production, comprising a base, a fixing structure, a rolling structure and a biting structure, wherein the base is rectangular, and the fixing structure is fixedly arranged on the upper wall of the base close to the right end and located in front of the center line; the present invention has a simple structure, and realizes the clamping and movement of the workpiece and the selection of the hob through a simple slide rail and a biting structure, thereby simplifying the mechanical structure and reducing the complexity and cost of the equipment; the corresponding processing hob can be automatically selected to realize automated operation, and the selected tool can be adjusted according to actual needs to adapt to the processing of teeth of different proportions, thereby increasing the scope of application of the equipment; there is no need to purchase multiple devices, and one device can complete the processing of multiple gears, thereby saving the equipment investment cost; the angle of the hob relative to the workpiece can be adjusted and the corresponding hob can be replaced, thereby improving the adaptability and flexibility of gear processing.

This invention discloses a drill pipe transport device, relating to the technical field of drill pipe storage devices. It includes a transport arm with a blocking part, a first transport section, and a second transport section. Both the first and second transport sections are capable of carrying and transporting drill pipes. The blocking part is used to prevent the drill pipe on the first transport section from being transported to the second transport section. A lever mechanism is movably connected to the transport arm and can move to either a first state or a second state. In the first state, the lever mechanism is hidden inside the transport arm. In the second state, the lever mechanism can extend out of the transport arm and lift the drill pipe from the first transport section to the second transport section. Therefore, this device can improve drill pipe transport efficiency and meet the need for rapid drill pipe transport.

The present application relates to the field of simulation test equipment, and discloses a test device suitable for uniform speed mining simulation of long working face of ultra-thin coal seam, comprising: a model box composed of multiple box walls and used for placing a test model; a mining mechanism used for being embedded in the test model and comprising upper and lower bearing plates arranged in parallel; the lower surface of the upper bearing plate is fixedly provided with an upper tooth plate, and the upper surface of the lower bearing plate is fixedly provided with a lower tooth plate; the upper tooth plate and the lower tooth plate are continuously toothed structures matched with each other and both have protruding teeth and lower grooves alternately distributed; and a limiting device acting between the upper tooth plate and the lower tooth plate and used for locking the upper tooth plate and the lower tooth plate at an initial supporting position. The present application adopts the staggered tooth plate structure, the initial supporting state is realized by the protruding teeth being abutted against each other, the height is determined by the tooth height only, and the limiting device is used for locking the upper tooth plate and the lower tooth plate at the initial supporting position, so that the initial thickness is not occupied, and the ultra-thin coal seam with extremely small thickness can be simulated.

A bifocal endoscope objective and endoscope, relating to the field of optical technology, includes a first lens with negative optical power, a second lens with positive optical power, a third lens with positive optical power and movable along the optical axis from the object side to the image side, a fourth lens with positive optical power, a fifth lens with negative optical power, and a sixth lens with negative optical power, arranged sequentially along the optical axis from the object side to the image side. The objective has a total optical length ≤ 6.8 mm and a full field of view ≥ 160°. The third lens is configured to change the air gap between the third lens and the second and fourth lenses by moving it along the optical axis to a first axial position or a second axial position, respectively corresponding to a long-distance observation mode and a short-distance observation mode, while maintaining a constant total optical length during the switching process. This objective achieves stable bifocal switching with a constant total optical length during the switching process in an extremely compact structure.

The utility model relates to the technical field of liquid crystal glass processing, and discloses a liquid crystal glass top crack residue removing mechanism which comprises a working table, an overturning unit installed on the upper end face of the working table and used for fixing liquid crystal glass, and a residue removing unit arranged between the working table and the overturning unit. According to the utility model, the overturning assembly and the top crack residue removal unit are integrated, and residue removal treatment is completed on the same workbench, so that the time loss of moving glass to different workbenches in the traditional process is avoided, the mechanical structure is simplified, and the maintenance difficulty and cost are reduced, thereby improving the overall residue removal efficiency; through linkage of multi-axis movement systems such as the overturning assembly, the Z-axis module and the X-axis module, three-dimensional movement of the liquid crystal glass is achieved, and therefore the liquid crystal glass three-dimensional movement device can adapt to liquid crystal panels of different sizes and shapes more flexibly.