113results about How to "Improve lifting stability" patented technology

The utility model relates to annular line processing equipment for a metal structural member, which belongs to the technical field of metal processing and comprises a structural member assembly, a guide wheel cutting mechanism and a workbench mechanism. The guide wheel cutting mechanism comprises a driving wheel, a driven wheel, a tension wheel, a detection wheel and a cutting line; the cutting line surrounds the driving wheel, the driven wheel, the tension wheel and the detection wheel to form an annular line; the motor drives the cutting line to circularly rotate through the driving wheel; the workbench mechanism comprises a push-pull assembly, a lifting assembly and a feeding workbench. A workpiece is arranged on the feeding workbench. The push-pull assembly comprises a lifting assembly mounting frame and a push-pull driving device; the push-pull driving device pushes and pulls the lifting assembly mounting frame to move horizontally, and the pre-cutting position of the workpiece is moved to the position under a cutting line; the lifting assembly comprises a lifting support and a lifting driving device. The lifting driving device drives the workpiece to ascend and descend through the feeding workbench. The cutting device can stably and efficiently cut workpieces, is high in cutting precision and low in cost, and does not pollute the working environment.

The invention discloses an integrated organic fertilizer raw material fermentation bin feeding and discharging robot, and belongs to the technical field of feeding and discharging robots. The integrated organic fertilizer raw material fermentation bin feeding and discharging robot comprises a storage box, a feeding hopper is arranged on the side wall of the storage box, a conical hopper is arranged in the storage box, and the upper end face of the conical hopper is connected to the inner wall of the storage box; the feeding and discharging device of the fermentation bin is integrated, feeding movement and discharging movement can be carried out, the double requirements are met, one machine has two purposes, the feeding and discharging efficiency is high, and the feeding and discharging device of the fermentation bin is convenient to use. And a second motor rotates to drive a second spiral output shaft to rotate, so that the raw materials are conveyed from the upper portion to the lower portion of the material storage box, blockage of the internal raw materials is prevented, and the discharging efficiency is improved.

The invention discloses an angle positioner for ablation biopsy needle puncture under CT guidance, and belongs to the technical field of ablation biopsy needle angle positions.In the moving process, a driving gear at the outer end of a rotating rod drives a first driven gear and a second driven gear to be linked, a right-hand thread screw and a left-hand thread screw are driven to rotate, and the right-hand thread screw is driven to rotate; the right-hand thread screw and the left-hand thread screw push the abutting pad to extend outwards to be fixed in the rotating process, the fixing function can be achieved in the moving process, the double-linkage function is achieved, the abutting pad can also be rotated manually to move outwards and inwards, and the fixing effect is achieved. An inner angle scanning piece and an angle identification groove are matched for use, the rotating angle is measured in the rotating process of a biopsy needle angle adjusting piece, focusing can be rapidly carried out while the rotating precision is improved, alignment laser and a biopsy needle containing groove are matched for use, the alignment laser is correspondingly connected with the focusing point of fixed laser and the focusing point of rotating laser, and the alignment precision is improved. The function that the biopsy needle can be independently adjusted is achieved.

The utility model relates to the technical field of soil remediation and discloses a soil remediation device which comprises a vehicle body, a conveying assembly is arranged at the top of the vehicle body, and one end of the conveying assembly penetrates through the vehicle body and is fixedly connected with a first spray head. A connecting pipe is fixedly installed on the outer side wall of the conveying assembly, a valve is installed on the outer side wall of the connecting pipe, a hose is fixedly connected to one end of the connecting pipe, a rotating rod is rotationally connected to the bottom of the vehicle body, a second spray head is fixedly connected to the bottom end of the rotating rod, and one end of the hose is connected with the second spray head; a gear is fixedly installed on the outer side wall of the rotating rod, a power assembly is arranged at the bottom of the vehicle body, the power assembly drives the rotating rod to rotate through the gear by arranging the power assembly, the gear, the rotating rod and the second sprayers and opening a valve, the second sprayers on one side of the rotating rod are unfolded, and the first sprayers spray pesticide to loosened soil; the second spray head sprays an agent on the surface of the unloosened soil in advance, so that the agent can permeate deep after the soil is loosened in the follow-up process.

The invention discloses a double-lifting system type crane trolley, and relates to the technical field of lifting equipment, the double-lifting system type crane trolley comprises a first moving trolley and a second moving trolley which are slidably connected to a lifting arm, a guide rail is connected to the inner side of one end of the lifting arm, and the first moving trolley and the second moving trolley are slidably connected to the guide rail; a supporting platform is connected to the inner side of the end, close to the guide rail, of the suspension arm, a traction device is connected to the supporting platform, and a steel wire rope is wound around the traction device and connected to the first moving trolley and the second moving trolley. According to the double-lifting-system type crane trolley, when the lifting system on one side is stuck, the other lifting system plays a supporting role, so that an isosceles triangle is integrally formed, the stability of lifting hooks on the two sides is kept, and the safety during object lifting is improved; and meanwhile, the condition of center deviation caused by shaking is avoided.

The utility model relates to the technical field of tunnel construction, in particular to a pipe jacking machine with a protection function and used for early-stage supporting of a tunnel, and solves the problems that in the prior art, as the top of the pipe jacking machine is lack of effective protection measures, once falling rocks and other sundries fall, the pipe jacking machine is possibly damaged, and even equipment failures are caused in serious situations. The construction progress is affected, the maintenance cost is increased, and the safety of constructors can be threatened. A pipe jacking machine with a protection function and used for early-stage supporting of a tunnel comprises a pipe jacking machine body and a top plate, and the top plate is arranged at the top of the pipe jacking machine body; connecting frames are arranged on the two sides of the bottom of the top plate. The top plate and the elastic supporting piece can be conveniently matched to elastically protect the top position of the pipe jacking machine, falling rocks in a tunnel are shielded, the pipe jacking machine is prevented from being damaged by the falling rocks, and the construction progress and the safety of equipment and personnel are guaranteed.

The utility model provides a radar detection device for road survey, and belongs to the technical field of road survey. The radar detection device for road survey comprises a bottom frame, fixing shafts are installed at the two ends of the two sides of the bottom frame, walking wheels are rotationally connected to the outer sides of the fixing shafts, a radar detector is installed on the inner side of the bottom frame, stand columns are installed at the four corners of the top end of the bottom frame, a top frame is installed at the top ends of the stand columns, and a battery box is installed in the middle of the top end of the top frame. A sweeping mechanism is installed on one side of the bottom frame and comprises a transverse frame, a rotating shaft is rotationally connected to the inner side of the transverse frame, a rotating disc is arranged at the bottom end of the transverse frame, the bottom end of the rotating shaft is fixedly connected with the middle of the top end of the rotating disc, three sliding rods are slidably connected to the inner side of the rotating disc, the three sliding rods are distributed in a surrounding mode, and the three sliding rods are distributed at equal intervals. The road sweeping device can effectively achieve the road sweeping function, prevents road surface gravel and other objects from scratching the bottom of the radar detection device, and has high practical value.

The present invention provides an industrial Internet of Things device based on edge computing, including a base, both sides of the front side of the top of the base are vertically bolted with support plates, the top of the support plate is horizontally bolted with a fixed plate, the inner cavities of the fixed plate and the support plate are both provided with lifting mechanisms, a dust box is bolted at the center of the top of the base, a PLC control panel is bolted to the front side of the dust box, a remote control module is bolted to the inner cavity of the PLC control panel, a dust collection mechanism is provided in the inner cavity of the dust box, a purification box is bolted to the rear side of the top of the base, and a circulating purification mechanism is provided in the inner cavity of the purification box. The present invention provides a power driving source through a stepping motor, and then drives the moving plate to be lifted and lowered through a screw rod, so that the moving plate drives the first dust suction head and the second dust suction head to adjust the height respectively, so that dust and floating particles at different heights can be vacuumed.

The application discloses a sound equipment suitable for a new energy vehicle-mounted system and relates to the technical field of vehicle-mounted sound equipment. The outer wall of the lifting frame is connected with a stabilizing frame used for promoting stable lifting of the playing frame. The lateral wall of the lifting bin is provided with a lifting sliding groove used for sliding connection with the outer wall of the stabilizing frame. The upper end of the stabilizing frame is connected with a fan-shaped outer frame. The inner ring of the fan-shaped outer frame is connected with a fan-shaped inner frame. The outer wall of the playing frame is slidingly connected with the inner wall of the lifting bin. The application has the advantages that the sound source position can be optimized synchronously with the position of the people in the vehicle and the driving and riding scene, sound field uniform coverage is ensured, the external sound pipe in the external sound hole can be flexibly stretched and contracted, the external sound pipe is stretched out to prolong the sound path when low-pitch focusing needs to be enhanced, the sound effect demand of the vehicle-mounted closed space is adapted, the outer cladding plate can quickly complete height locking and unlocking of the playing frame, the cladding locking structure of the outer cladding plate further strengthens the position stability of the playing frame, and sound effect distortion or component damage is prevented.

The utility model discloses a naphthalene water reducer neutralization reaction device capable of automatically adding alkali, and belongs to the technical field of water reducer production equipment. The naphthalene water reducer neutralization reaction device with the automatic alkali adding function comprises a reaction tank, a tank cover is installed at the top end of the reaction tank, four supporting columns are installed on the outer side of the bottom end of the reaction tank, a cooling mechanism is installed on the outer side of the reaction tank, an alkali liquor tank is arranged on one side of the reaction tank, a ring pipe is installed on the inner side of the reaction tank, and a plurality of alkali liquor spray heads are installed at the bottom end of the ring pipe. The top end of the alkali liquor tank is provided with a liquor feeding mechanism for supplying liquor to the annular pipe, the top end of the annular pipe is provided with a cleaning mechanism for cleaning the alkali liquor spray head, the reaction tank is internally provided with a mixing mechanism, the bottom end of the reaction tank is provided with a liquor outlet pipe, and one end of the liquor outlet pipe is provided with a valve. The neutralization reaction efficiency is improved, and the practical value is relatively high.

The present invention provides a connection structure and a method for using the base keel of an assembled ceiling to prevent displacement, and relates to the technical field of decoration design, wherein a connection structure for preventing the base keel of an assembled ceiling from displacing comprises a decorative panel, a keel member, a square steel member and a splicing member, wherein the keel member comprises a first plate, a second plate, a connecting plate, a first foot plate and a second foot plate, and the splicing member comprises a first clamping plate, a second clamping plate and a transition plate, wherein the distance between the first clamping plate and the second clamping plate is equal to the width of the square steel member, a notch and a connecting groove are provided on the first clamping plate, the width of the notch is equal to the width of the connecting plate, the square steel member is connected with a hanging column and a closing column, and a closing plate is provided on the closing column. The present invention has a simple structure, the connection between the keel member and the square steel member will not be displaced, the overall lifting stability is high and the effect is good, the installation efficiency is high, and all keels after installation have good flatness, which can effectively improve the overall aesthetics and safety of the ceiling.

The utility model relates to a hoisting charging trolley in the field of charging crane equipment, which comprises a trolley frame and a hanging bracket correspondingly positioned below the trolley frame, the lower parts of four corners of the hanging bracket are connected with four hanging hooks, and the upper parts of the four corners of the hanging bracket are provided with four hanging points; two coaxial duplex winding drums are symmetrically arranged at the two ends of the upper frame face of the trolley frame, a double-shaft motor is arranged between the two duplex winding drums, and two output shafts of the double-shaft motor are in transmission connection with drum shafts of the two duplex winding drums respectively. The two sides of each duplex winding drum are each provided with two fixed pulley blocks coaxial with the duplex winding drum, and the outer rope ends of the two steel wire ropes wound around the duplex winding drums are correspondingly connected with the two lifting points at the corresponding ends of the lifting frame in a lifting mode after bypassing the two corresponding fixed pulley blocks on the two sides; according to the hoisting and charging trolley, four hoisting points are controlled through one charging trolley, and the hoisting stability is improved by arranging the hoisting tool.

The utility model discloses a lift type weighable footstool for an intervention room, which comprises a base, a pedal cover, a guide component and a lifting system, the pedal cover is provided with a cover plate and a downward extending plate integrally, vertically and downwards extending around the periphery of the cover plate, and the cover plate is arranged above the base and movably covers the upper end of the base through the downward extending plate; the guide assembly is vertically arranged between the base and the pedal cover, and the cover plate and / or the downward extending plate are / is movably connected with the base through the guide assembly. The lifting system is provided with a driver and a lifting pedal, the driver is arranged in the base and connected with the pedal cover, and the driver is used for being connected with the lifting pedal and controlling the driver to drive the pedal cover to ascend and descend on the base in the direction of the guide assembly. Therefore, the structural design of the footrest is simplified, the production and manufacturing cost is reduced, the operation is convenient, and the use experience is better; and the guide assembly is assembled between the lower extension plate and the base, so that the strength of the assembly structure between the pedal cover and the base is improved, and the lifting stability of the pedal cover is improved.

The utility model discloses a hydraulic valve assembly and disassembly training platform which comprises an assembly and disassembly training platform body, the bottom of the assembly and disassembly training platform body is connected with a supporting cylinder in a sliding mode, a bridging cross beam is installed on the supporting cylinder, and a lifting mechanism is installed between the bridging cross beam and the assembly and disassembly training platform body. The lifting mechanism comprises a jack installed between the bridging cross beam and the disassembly and assembly training table, the lifting mechanism further comprises a driving assembly hinged to a pressing handle of the jack, and the pressing handle is driven by the driving assembly to move in a reciprocating mode. The disassembly and assembly training platform is lifted through the jack, the heavy disassembly and assembly training platform can be easily lifted, and the lifting stability of the disassembly and assembly training platform is high; by arranging the driving mechanism and utilizing the driving assembly in the driving mechanism, the pressing handle of the jack can be driven in a reciprocating mode to do reciprocating lifting motion, then the pressing handle of the jack is continuously driven, and therefore the lifting operation of the dismounting training table is rapidly achieved.

The utility model provides a seat cushion lifting mechanism of a vehicle seat and the vehicle seat, the seat cushion lifting mechanism of the vehicle seat comprises a mounting bracket arranged between a seat cushion framework and a seat cushion, and an air bag assembly arranged on the mounting bracket; the air bag assembly is arranged close to the front end of the vehicle seat and connected with an external air path, and the air bag assembly has an inflation state of bulging upwards and a deflation state of being flatly laid on the mounting bracket; in the inflated state, the air bag assembly lifts the front portion of the seat cushion upwards. According to the seat cushion lifting mechanism of the vehicle seat, the front portion of the seat cushion can be lifted by inflating the air bag assembly, the assembly cost and the later maintenance cost can be reduced, and therefore the market competitiveness of the vehicle seat can be improved.

The utility model relates to the field of wire drawing devices, in particular to a gantry type multidirectional adjusting wire drawing device which comprises a case, two groups of Y-axis adjusting modules which are vertically distributed are arranged on the side wall of the case through a chain wheel structure, the Y-axis adjusting module located on the lower layer is provided with a bearing plate, and two groups of limiting plates are arranged on the bearing plate. Each set of limiting plates is provided with a limiting air cylinder, the limiting plate on the right side is further provided with a clamping air cylinder, the output end of the clamping air cylinder is provided with an abutting plate for fixing a machined part, the Y-axis adjusting module located on the upper layer is provided with an X-axis adjusting module, and a polishing and wire drawing unit and a thread machining unit are arranged in the X-axis adjusting module. The Y-axis adjusting module comprises a lifting plate connected with the chain wheel structure; through cooperation of the Y-axis adjusting module and the X-axis adjusting module, two-dimensional accurate positioning of the polishing abrasive belt is achieved, the polishing flexibility is improved, meanwhile, a polishing wire drawing unit and a spiral thread machining unit are integrated, surface defects are effectively removed, and attractive and practical textures are added.

The invention provides a wafer pushing device. The wafer pushing device comprises a first lifting mechanism, a mounting bracket, a magnetic attraction base, a second lifting mechanism and a pushing assembly, the first lifting mechanism is used for driving the mounting bracket to lift. The magnetic attraction base is arranged on the mounting bracket, and a first pushing channel is arranged on the magnetic attraction base; the second lifting mechanism is arranged in the mounting bracket; the pushing assembly comprises a pushing seat, a needle cap and a pushing piece, the pushing seat is fixed to the magnetic attraction base in a magnetic attraction mode, a second pushing channel is formed in the pushing seat, the needle cap is connected to the pushing seat, the pushing piece is arranged in the needle cap, and a pushing hole is formed in the top of the needle cap; the lower end of the pushing piece sequentially penetrates through the second pushing channel and the first pushing channel and then abuts against a movable component of the second lifting mechanism. According to the wafer pushing device provided by the invention, the pushing assembly is magnetically attracted and fixed on the magnetic attraction base, and the pushing piece of the pushing assembly abuts against the second lifting mechanism. When the pushing piece needs to be replaced, only the pushing assembly needs to be removed from the magnetic attraction base, and a new pushing assembly is installed.

The utility model discloses a simple hoisting cart for constructional engineering, which belongs to the technical field of hoisting carts, and comprises a movable chassis, the upper end of the movable chassis is fixedly connected with a support, the support is rotatably connected with a movable wall frame, the inner part of the movable wall frame is slidably connected with a hoisting arm, and the hoisting arm is connected with the movable wall frame. When building materials are hoisted and placed, a building worker pokes the pull rod to move rightwards through the foot to drive the movable clamping plate to move rightwards and extrude the spring, so that a space is reserved at the upper end of the placing seat, and the building materials are conveniently placed; and the movable clamping plate is driven to be matched with the fixed plate to clamp and fix the building material under the elastic reset action of the spring, so that the building material is not easy to collide or roll and fall off due to the influence of bumping and shaking in the hoisting process, the hoisting stability is improved, and the hoisting efficiency is effectively improved.

The utility model discloses automatic carrying equipment for liquid crystal display panels, which comprises a machine frame and an adjusting mechanism, the machine frame is provided with a conveying mechanism, the conveying mechanism is used for conveying the liquid crystal display panels assembled with back plates to the position of the adjusting mechanism, and the adjusting mechanism comprises a mounting frame, a transverse moving driving assembly, a lifting assembly and a clamping assembly. The lifting assembly is installed on the transverse movement driving assembly and connected with the clamping assembly, rotating units are arranged at the two clamping ends of the clamping assembly, and the clamping assembly is used for clamping the liquid crystal panel assembled with the back plate and is matched with the rotating units to rotate by a preset angle. According to the automatic carrying equipment for the liquid crystal display panel, the mode that the conveying mechanism is matched with the adjusting mechanism is adopted, the liquid crystal display panel assembled with a back plate is turned over by a specified angle and then detected manually, the design is ingenious, manual lifting and detection are not needed, the labor cost is greatly saved, time and labor are saved, the detection efficiency is remarkably improved, and the working efficiency is improved. And the liquid crystal panel is prevented from being damaged.

This invention relates to the field of distillation apparatus technology, specifically to a modular distillation apparatus suitable for the alternating production of γ-butyrolactone and δ-valerolactone. It includes a distillation column with an opening on its side wall. A sealing door is detachably installed at the opening via bolts. A lifting cylinder is installed inside the distillation column. The lifting cylinder contains tray modules, and a lifting mechanism is installed inside the distillation column. A locking mechanism is installed on the inner wall of the distillation column. By using replaceable tray modules and packing modules within the same distillation column, and cooperating with the lifting mechanism, the lifting cylinder can be smoothly raised, lowered, and its position adjusted. The locking mechanism ensures the stability of the module installation. This eliminates the need to construct multiple distillation columns separately; alternating production of GBL and DVL can be achieved simply by switching different functional modules. This solves the problems of high cost and low equipment utilization caused by the "one product, one column" approach mentioned in the background art.

A driven gear quantitative feeding device comprises a rack, a first driving motor, a transmission disc, a rotating shaft, a stacking assembly and a lifting mechanism. The first driving motor drives the rotating shaft to rotate so as to drive the transmission disc to rotate. The multiple stacking assemblies are evenly arranged in the annular direction of the transmission disc, each stacking assembly comprises a chassis, a guide shaft and a first lifting plate, the guide shafts are fixed to the chassis, and the first lifting plates are installed on the guide shafts in a sliding mode. The chassis and the driving disc are respectively provided with a group of through holes. After the stacking assembly rotates to the feeding area along with the transmission disc, the lifting part of the lifting mechanism sequentially penetrates through the through holes and jacks the first lifting plate, so that the gears located on the lifting plate are jacked one by one, and quantitative output of the driven gears is achieved. The device is compact in structure, stable in feeding and capable of achieving ordered distribution and continuous feeding of gears.

The utility model discloses a kind of steering conveying devices, it is related to conveying machinery technical field, including rack, roller type conveying mechanism is installed on the rack, lifting movable setting bogie is installed on the rack, chain belt type conveying mechanism is installed on the bogie, at least two rows of lifting transmission swing rod are arranged on the rack;The lifting transmission swing rod includes the lifting section that oscillates in pitch direction and the transmission connecting section that oscillates along arrangement direction, the free end of the lifting section is hingedly connected with the bogie, hingedly connected with linkage rod between the free end of adjacent transmission connecting section;Lifting driver is installed on the rack, and the lifting driver is used to drive each row lifting transmission swing rod synchronous action.The utility model utilizes one lifting driver to drive two rows lifting transmission swing rod synchronous action, lifting section in each lifting transmission swing rod embodies the synchronism of lifting bogie, reaches the purpose of improving lifting stability.

The utility model discloses a roll changing device of a calender, which belongs to the technical field of roll changing devices and comprises a frame body and a height adjusting mechanism, movable plates are movably embedded in the inner walls of the two sides of the frame body, a mounting frame is fixedly mounted between the outer walls of the two movable plates, and a mounting shaft is fixedly connected between the inner walls of the two sides of the mounting frame. The frame body supports the mounting frame and the arc-shaped bracket, the calender rotating roller is conveniently lifted through the arc-shaped bracket on the mounting frame, the arc-shaped bracket is rotationally mounted on the mounting frame through the mounting shaft, overturning storage of the arc-shaped bracket is facilitated, and the hydraulic cylinder conveniently drives the cross column and a surface chain wheel of the cross column to ascend and descend. Due to the fact that the two ends of the chain are connected with the installation frame and the fixing plate respectively, the installation frame can be conveniently driven to ascend and descend, the calender roller can be conveniently lifted or lowered, the movable plate slides on the inner walls of the two sides of the frame body, the lifting stability of the installation frame is improved, negative effects caused by manual roller replacement are avoided, and the roller replacement efficiency and safety of the calender are improved.

The invention discloses a marine folding arm crane and a using method thereof, and relates to the technical field of cranes. The folding arm crane for the ship comprises a first split base installed at the position, close to a bow, of a deck, and further comprises a crane arm which comprises a fixed arm fixed to the upper portion of the first split base, a large lifting arm rotationally installed at the upper end of the fixed arm and a small lifting arm rotationally installed at the other end of the large lifting arm. A hydraulic cylinder used for pushing and pulling the lifting large arm is arranged on the first split base. The cargo lifting hook assembly is arranged on the split base I and the crane boom; the second split base is located on the side, close to the center of the deck, of the first split base, according to the marine folding arm crane and the using method thereof, when the small lifting arm is lifted, the force bearing point is located on the second split base, and when the small arm driving piece lifts goods, the force bearing points of the goods are dispersed on the first split base and the second split base; the crane boom is prevented from toppling.

The utility model discloses a conveying rotating mechanism which comprises a conveying assembly and a rotating assembly, the rotating assembly is arranged below a rotating station, the rotating assembly comprises a base plate, a jacking driving part, a lifting part, a rotating driving part and a bearing part, the driving end of the jacking driving part is connected with the lifting part so as to drive the lifting part to ascend and descend to a first position, and the bearing part is arranged below the rotating station. The bearing part is rotatably mounted on the lifting part, and the rotation driving part is used for driving the bearing part to rotate by a preset angle; when the conveying and rotating mechanism works, the conveying assembly conveys materials to the rotating station, the jacking driving part drives the lifting part to ascend to the first position and drives the bearing part to ascend and eject the materials on the rotating station away from the conveying assembly, and the rotating driving part drives the bearing part to rotate by a preset angle so as to drive the materials on the bearing part to rotate by the preset angle; the liquid crystal panel turnover device is compact in structure and ingenious in design, manual turnover is omitted, hard contact between a liquid crystal panel and a machine table is avoided, and turnover efficiency is high.

The present disclosure discloses a fundus observation system and a surgical microscope. The system is connected to a microscope body, and includes a focusing body, the focusing body having a housing, a first slider, a second slider, a focusing assembly, and a plurality of connecting rod units, the focusing assembly including a focusing frame and a focusing lens arranged on the focusing frame, the connecting rod unit including a first connecting rod and a second connecting rod that are cross-hinged, the two ends of the first connecting rod are respectively hinged to the second slider and the housing, the two ends of the second connecting rod are respectively hinged to the focusing assembly and the first slider, the first slider is slidably arranged on the housing along a sliding direction, and the second slider is slidably arranged on the focusing assembly along a sliding direction, so that the focusing lens can move relative to the housing along the focusing direction, and the focusing direction is perpendicular to the focusing lens.

The utility model provides an aspheric alloy mold core outer diameter polishing mechanism, and belongs to the technical field of polishing equipment. The aspheric alloy mold core outer diameter grinding mechanism comprises a workbench, a clamping mechanism is installed on the first side of the top end of the workbench, a translation mechanism is installed on the second side of the top end of the workbench, a grinding mechanism is installed at the moving end of the translation mechanism, a flow guide groove is formed in the middle of the top end of the workbench, and a dustproof mechanism is arranged on one side of the clamping mechanism. The grinding mechanism comprises a vertical frame, a cross rod is mounted at the top end of the vertical frame, a first electric telescopic rod is mounted at the top end of the cross rod, the output end of the first electric telescopic rod penetrates through the bottom end of the cross rod, a first electric rotating table is mounted at the output end of the first electric telescopic rod, and a mounting base is mounted at the rotating end of the first electric rotating table. The angle adjusting function of the grinding head can be effectively achieved, the grinding head can be conveniently attached to the outer diameter of the aspheric alloy mold core, and the angle adjusting device has high practical value.

The invention discloses an easy-to-operate lifting device suitable for a narrow space, and relates to the technical field of lifting equipment, a plurality of groups of gallows lifting mechanisms are arranged at the upper end of a frame of a supporting frame, a guide rail of a guide sliding rail is slidably connected with a guide sliding table, and a supporting platform is arranged at the upper end of a rack of the guide sliding table; and a chain transmission mechanism for driving the gallows lifting mechanism is arranged at the upper end of the supporting platform. According to the design, based on integrated assembly of the multiple groups of gallows lifting mechanisms, under linkage transmission of the chain transmission mechanism, the multiple groups of gallows lifting mechanisms are pushed to lift in an independent lifting mode in an integrated linkage mode, the state of independent operation and linkage lifting is formed, mechanical equipment is lifted and shored, the occupied space of lifting in the gallows mode is smaller, and the lifting efficiency is improved. The lifting mechanism is suitable for various complex space environments, the self-stability of independent lifting is better, the influence of other parts is smaller, the state is more stable, and the conditions of shaking and the like caused by overall linkage lifting can be reduced.

The utility model discloses a sofa with a lifting and limiting frame, which relates to the technical field of sofas, and comprises a sofa seat, a servo motor is arranged in the sofa seat, a rotating column is arranged at the output end of the servo motor, a first bevel gear is fixedly connected to the side wall of the rotating column, and the first bevel gear is in meshed connection with a second bevel gear. One end of the second bevel gear is fixedly connected with a two-way threaded rod, the side wall of the two-way threaded rod is in threaded connection with two sliding blocks, the upper ends of the sliding blocks are fixedly connected with two first rotating bases, the first rotating bases are rotationally connected with connecting rods, and the ends, away from the first rotating bases, of the connecting rods are rotationally connected with second rotating bases; according to the lifting mechanism, the single servo motor is used for simultaneously driving the six connecting rods to support the lifting of the sofa frame, so that the lifting stability of the sofa frame is higher, and the lifting mechanism is simple in structure, easy to operate and convenient to produce and maintain.