159results about How to "Lifting is stable and reliable" patented technology

The invention discloses a multifunctional trolley with a double-layer platform, and belongs to the field of carrying tools. The trolley comprises an upper-layer platform body, a bottom-layer platformbody and a pushing hand, the pushing hand is fixed at the rear portion of the bottom-layer platform body, the upper-layer platform body is installed over the bottom-layer platform body through a scissor-type lifting mechanism, and the scissor-type lifting mechanism is further internally provided with an upper-layer locking air spring; the bottom-layer platform body comprises a bottom-layer platform fixing frame and a bottom-layer platform retractable frame which are retractably matched, the rear portion of the bottom-layer platform fixing frame and the front portion of the bottom-layer platform retractable frame are provided with rolling wheels, a bottom-layer retractable air spring for keeping the bottom-layer platform retractable frame elastically extending out is arranged between the bottom-layer platform fixing frame and the bottom-layer platform retractable frame, and the rear portion of the bottom-layer platform fixing frame is provided with a linkage mechanism for driving the bottom-layer platform retractable frame to retract back. By means of the trolley, the flexible use of the double-layer platform can be achieved; the loading capacity of the double-layer trolley is improved, and the trolley is flexible and convenient to use and easier to operate.

The invention discloses a wind-power slip ring detection system capable of simulating a real working state, comprising a working table, brackets and a support; the support is provided with a rotation shaft driving a rotor to rotate and a driving motor driving a rotation shaft; the system also comprises a low resistance tester for testing multi-path dynamic resistance of the power-wind slip ring, an insulation resistance tester for testing insulation resistance of the power-wind slip ring, and a voltage resistance tester for testing the voltage resistance capability of the power-wind slip. The invention designs a working table capable of bearing the product weight, adopts the rotation shaft to rotate the rotor to perform 360-degree rotation, and is provided with the brackets in cooperation with the stator of the product. As a result, when the rotor is rotating, the stator maintains a relatively fixed state. The invention can simulates the real working state of the wind-power slip ring, realizes the automatic detection of the product dynamic resistance, product insulation resistance and product voltage resistance capability, and improves the product quality and detection efficiency.

The invention relates to an electric lifting rod, which comprises a driving device and a lifting device, wherein the driving device comprises a driving motor, a reduction box and a hand-cranking box; the lifting device comprises a base, casing pipes and a transmission structure; and the casing pipes and the transmission structure are both connected to the base. The electric lifting rod is characterized in that the transmission structure is set into a rolling spiral transmission structure, and the transmission structure comprises lead screws and nuts cooperatively and fixedly connected with the lead screws. The relative displacement of the casing pipes of the electric lifting rod disclosed by the invention is lead screw and nut transmission, other transmission modes, such as steel wire ropes, are omitted, and the electric lifting rod has the advantages of big load bearing capability, high reliability and safety, simple transmission structure and convenience in disassembling and maintaining, and multi-section lead screws are in invaginating transmission.

The invention discloses a passion fruit linear type filling machine. The passion fruit linear type filling machine comprises a conveying mechanism, a stirrer, a filling mechanism and metering cylinders. The conveying mechanism is installed on the transverse front side of the upper end of a base, and a bottle opening limiting mechanism and the filling mechanism are installed on the front side and the rear side of the middle of the conveying mechanism. The filling mechanism is connected to the discharging ends of the metering cylinders through pipelines, and the feeding ends of the metering cylinders are connected to the bottom of the stirrer. The stirrer is fixedly connected to the rear side of the base through a supporting frame, piston rods of the metering cylinders are connected with a metering adjusting mechanism, and the metering adjusting mechanism is installed on the base. The metering adjusting mechanism in the passion fruit linear type filling machine adjusts the stir uniform feeding of the stirrer and the discharging operation of the metering cylinders and controls the feeding operation of the metering cylinders, and after the metering cylinders are filled with passion fruit juice, the filling mechanism is controlled to multiple filling bottles conveyed by the conveying mechanism to conduct discharging and filling operation. The bottle opening limiting mechanism is adopted to conduct automatic quick limiting, the bottles are pushed to the filling positions to be subjected to quick filling, and therefore the bottle output waiting time is shortened, and the production efficiency is improved.

A hidden multi-column type hydraulic lifting garbage transferring box is characterized in that a pit is formed in the ground; a support is arranged at the bottom of the pit; an upper cover and a lower platform are arranged in the pit; a large garbage throw-in port is formed in the upper cover and is internally provided with a large throw-in port cover; the front side or the rear side of the large throw-in port cover is connected with the upper cover in an overturning manner through a hinge; a small garbage throw-in port is formed in the large throw-in port cover and is provided with a garbage barrel; a first movable supporting point and a second movable supporting point are arranged below the upper cover; the lower portion of the first movable supporting point is connected with a pull rod which is provided with an adjusting nut; a limiting pull hook is arranged in the pit; the lower platform is provided with a garbage can and an ozone generator; a hydraulic lifting mechanism is arranged below the lower platform and comprises four or more fixing sleeves; an oil cylinder is arranged in each fixing sleeve; each oil cylinder piston rod makes contact with the pit; oil cylinder bodies penetrate the lower platform; the left side oil cylinder is matched with the second movable supporting point of the upper cover through a pin; a waste material induction head is arranged below the upper cover; the lower platform is provided with a pushing oil cylinder which is fixed to the garbage can through a pull pin; a stopping block is manufactured on the lower platform; and a water level induction head is arranged on the inner wall, located below the lower platform, in the pit.

The invention relates to a multifunctional chair base, and belongs to a part of a chair. The multifunctional chair base comprises an underframe combining piece, an underframe shell, an electric wire combining piece, a rotating mechanism and a lifting mechanism, and is characterized in that the multifunctional chair base is also provided with a cover plate, a protecting cap, an actuating unit and a tilting mechanism, wherein the rotating mechanism and the lifting mechanism are all arranged in the underframe shell; the actuating unit and the tilting mechanism are arranged in the underframe shell; the rotating mechanism is connected with the lifting mechanism and the tilting mechanism; the cover plate is connected with the lifting mechanism; and the protecting cap is connected with the tilting mechanism. The multifunctional chair base has the advantages of reasonable structural design, good configuration, beauty and utility, economy and elegance, stable lifting and multiple functions, and not only can be arranged on a massage chair, but also can be arranged on an office chair, a facial chair, a medichair, a home-use chair, and products with similar structures.

The invention relates to the technical field of kitchen appliances, in particular to a gas stove with lifting type dry-boiling prevention temperature sensors and a control method thereof. The gas stove comprises the temperature sensors, a lifting mechanism connected with the corresponding temperature sensors and used for driving the temperature sensors to rise and all and a control system connected with the lifting mechanism and used for controlling the temperature sensors to rise and fall. The gas stove further comprises weight sensors used for acquiring weight information. The control systemis connected with the weight sensors. By means of the gas stove and the control method thereof provided by the invention, the weight information of cookware is collected through the weight sensors; the gas stove judges whether the lifting mechanism needs to rise or not according to the collected weight information of the cookware. Accordingly, intelligent rising and falling of the temperature sensors are achieved, and control is simple and reliable.

The invention provides an intelligent door which comprises a door frame, a door body and an electronic lock. A face recognizing system is arranged in the door body. The face recognizing system collects video signals for faces by means of a camera, extracts features by means of video frame analysis, compares the features with templates stored in a system management platform, and issues a door opening instruction to the electronic lock after the comprehensive fit goodness reaches a set value and face comparison is successful; otherwise, the face recognizing system does not issue the door opening instruction. The camera is a liftable camera, and the height of the camera is adjusted by means of a lifting mechanism. The lifting mechanism comprises a lifting sliding block used for installing the camera. The lifting sliding block is arranged on a screw. The screw is connected with a motor. A track for the lifting sliding block to move vertically is arranged in the door body, and an outdoor control key is used for controlling the motor to achieve lifting of the camera.

The invention relates to the field of new energy car charging piles, in particular to an automatic inserting-extracting type new energy car charging pile capable of being accurately lifted. Accordingto the technical scheme, the automatic inserting-extracting type new energy car charging pile capable of being accurately lifted comprises a charging pile body, a charging plug is connected with the charging pile body; an installation plate is connected with the charging pile body and is fixed with a casing pipe, a screw rod nut mechanism is connected into the casing pipe, a lifting pipe is connected with the other end of the screw rod nut mechanism, an air cylinder is connected with the other end of the lifting pipe, and a piston rod of the air cylinder is fixedly connected with the chargingplug; a driving mechanism is further arranged on the installation plate, an output shaft of the driving mechanism is connected with a transmitting mechanism and the screw rod nut mechanism is connected with the output end of the transmitting mechanism. The automatic inserting-extracting type new energy car charging pile capable of being accurately lifted solves the problem that the new energy carneeds a handheld gun body to charge thus causing the electric shock to the human body.

The invention belongs to the field of mechanical parking devices and discloses a planar moving type modularized intelligent stereo garage. A pre-parking device is arranged under a planar moving type parking platform and provided with a pre-parking module, a conveying direction of the pre-parking module is uniform with that of a lifting conveying mechanism of a lifting device, and the pre-parking module is in linkage with the lifting conveying mechanism. An intelligent vehicle parking and taking appointment making function is realized by the pre-parking device, a vehicle owner can park a vehicle on the pre-parking module to waist for automatic parking and can also make an appointment of vehicle taking, the to-be-taken vehicle is pre-transferred to the pre-parking module from the intelligentstereo garage, and accordingly vehicle parking and taking efficiency is remarkably improved while the intelligent vehicle parking and taking appointment making function is realized. In addition, whenfire accidents of vehicles occur, a traveling mechanism at the bottom of a parking platform module drives the parking platform module to move on rails to quickly transfer vehicles on fire and isolatethe vehicles on fire from nearby vehicles, so that other vehicles can be protected from being jeopardized, and high loss caused by situation escalation is effectively prevented.

The invention discloses bidirectional road monitoring equipment, belongs to the technical field of monitoring equipment, and solves the problem that cost and maintaining difficulty are increased due to the fact that road monitoring devices are arranged on two sides of a road in the prior art. The bidirectional road monitoring equipment comprises a vertical rod and is characterized in that a connecting rack is mounted at the top of the vertical rod, a rotating device is arranged between the connecting rack and the vertical rod, movable rack rods are connected to the connecting rack, a central rotary rod connected with the center of the rotating device is mounted in the vertical rod, a clamping device is connected to the central rotary rod, a belt wheel is mounted at each of the top and thebottom in the vertical rod, a conveying belt is mounted on the belt wheels, a clamping fastener is connected to the conveying belt, a shield shell sleeves the lower end of the vertical rod, a rotary bottom plate is connected to the bottom of the vertical rod in the shield shell, the shield shell is communicated with a transmission case, a rotary handle plate is mounted in the transmission case, ahandle middle rack is connected below the rotary handle plate, and a transmission belt is connected between the handle middle rack and the vertical rod. The bidirectional road monitoring equipment issimple and efficient in maintenance operation.

The invention discloses a lawn cropper, wherein a protective shell is installed on the surface, and an accumulator and a motor are installed in the protective shell; a motor shaft of the motor is vertically downward and extends to the lower side of the platform, and a cutter head on which cutters used for clipping lawn are installed is installed on the part of the motor shaft below the platform; a forward walking wheel is connected with the bottom end of the motor shaft via an extending column, and the extending column is rotationally installed at the bottom end of the motor shaft via a bearing; a grass collection box is installed on the bottom surface of the platform at the rear part of the butter head, and the grass collection box comprises a grass collection opening with an inclined front end face; rear walking wheels are installed at two sides of the grass collection box; a sliding boss is arranged on the motor shaft along the length direction of the motor shaft, and an assembling hole used for assembling the motor shaft is correspondingly formed in the center of the cutter head, and a sliding groove used for assembling the sliding boss in a sliding manner is formed in the hole wall of the assembling hole; a manual push rod is installed on the platform, and a solar cell panel is assembled on the front surface of the manual push rod.

The invention provides a steel plate lifting and transporting device which comprises a base, a guiding device, two groups of connecting rod mechanisms, a support, a lifting oil cylinder mechanism and a rolling wheel mechanism. The guiding device comprises a supporting seat, a barrel and a guiding column, wherein the supporting seat is fixed on the base, the barrel is fixed on the supporting seat, the guiding column can vertically and movably sleeved by the barrel, and the upper end of the guiding column is fixed on the support. When the support lifts and descends, the guiding device is used for limiting the lifting direction of the support. The two groups of connecting rod mechanisms are parallelly arranged in the longitudinal direction of the steel plate lifting and transporting device. Each group of connecting rod mechanisms comprises a left upper connecting rod, a right upper connecting rod, a left lower connecting rod, a right lower connecting rod and a middle connecting rod, wherein one end of each left upper connecting rod is connected to the support in a pivoted mode, one end of each lower connecting rod is connected to the base in a pivoted mode, the other end of each upper connecting rod is in pivoted connection with the other end of the corresponding lower connecting rod, and the middle connecting rod is connected between the left and right upper connecting rods and the left and right lower connecting rods. When the support lifts and descends, the connecting rod mechanisms lift and descend with the support.

The invention discloses a reversing device and a conveying system. The reversing device comprises a rack, and butt-joint rails and reversing rails are perpendicularly arranged on the rack. The reversing device further comprises a driving motor, a main transmission assembly, a sub-transmission assembly and a lifting assembly. The driving motor is mounted in the rack and connected with the butt-joint rails through the main transmission assembly, the sub-transmission assembly is connected with the main transmission assembly and the reversing rails, and the lifting assembly is mounted in the rack and connected with the reversing rails and the sub-transmission assembly. The conveying system comprises first conveying rails and second conveying rails, wherein the first conveying rails and the second conveying rails are in butt joint at an angle. The reversing device is arranged in the butt-joint position of the first conveying rails and the second conveying rails, the butt-joint rails are in butt joint with the first conveying rails, and the reversing rails are in butt joint with the reversed second conveying rails. The reversing device and the conveying system have the advantages of being low in cost, convenient to operate, stable, reliable, large in lifting range and capable of saving the space inside the rack.

The invention discloses a multi-functional wheelbarrow and belongs to the field of carrying tools. The multi-functional wheelbarrow comprises an upper-layer platform, a bottom-layer platform and handlebars, the handlebars are fixed to the rear part of the bottom-layer platform, and the upper-layer platform is installed on vertical arms of the handlebars through a vertical lifting mechanism; the bottom-layer platform comprises a bottom-layer platform fixed frame and a bottom-layer platform retractable frame which are matched in a retractable mode, the front part of the bottom-layer platform retractable frame is provided with front wheels, the rear part of the bottom-layer platform fixed frame is provided with rear wheels, an elastic mechanism is further arranged between the bottom-layer platform fixed frame and the bottom-layer platform retractable frame, and a linkage mechanism which ascends along with the upper-layer platform to drive the bottom-layer platform retractable frame to retract is further arranged between the upper-layer platform and the bottom-layer platform retractable frame. The loading capability of the multi-functional wheelbarrow is improved, thus the wheelbarrowhas multiple functions, the upper-layer platform and the bottom-layer platform are combined organically through the linkage mechanism, the functions are coordinating, the usage is more flexible, the operation is easier, and the work efficiency is improved.

The invention discloses a lifting mechanism and disinfection equipment. The lifting mechanism comprises a containing frame provided with containing space for containing to-be-disinfected objects, a base located below the containing frame, a first connecting rod assembly, a second connecting rod assembly, a locating part and a locking assembly. One end of the first connecting rod assembly is rotationally connected with the base, and the other end of the first connecting rod assembly is rotationally connected with the containing frame. The second connecting rod assembly is opposite to the firstconnecting rod assembly, one end of the second connecting rod assembly is rotationally connected with the base, and the other end of the second connecting rod assembly is rotationally connected with the containing frame so that the containing frame can ascend and descend along with swing of the first connecting rod assembly and the second connecting rod assembly. The locating part is arranged on the first connecting rod assembly and / or the second connecting rod assembly and is provided with a limiting structure. The locking assembly is arranged at the position, corresponding to the locating part, of the bottom of the containing frame. When the locating part deflects to the preset position relative to the containing frame along with swing of the first connecting rod assembly and / or the second connecting rod assembly, the locking assembly and the limiting structure are locked. According to the technical scheme, the stability of the lifting mechanism can be improved easily.

The invention discloses a movable lifting conveyor belt. It includes a frame and a transmission belt, and the transmission belt is rotatably assembled on the frame. Its characteristics are: a chassis is arranged at the bottom of the frame, and a lifting rod is installed in the cabinet through a guide block. The bottom of the case is fixedly connected; the drive motor is fixedly assembled outside the case, the output shaft of the drive motor extends into the case and the lifting rod is driven up and down through the transmission part; a moving wheel is provided at the bottom of the case. The invention has reasonable structural design, reliable lifting and moving of the conveyor belt, and convenient operation and use.

A concealed connecting rod intersecting type hydraulic ascending and descending rubbish transfer box is characterized in that a pit is dug in the ground; an upper cover and a lower platform are arranged in the pit; a large rubbish inlet is formed in the upper cover, and a large inlet cover is arranged in the large rubbish inlet; the front side or the rear side of the large inlet cover is connected with the upper cover in an overturning mode through hinges; a small rubbish inlet is formed in the large inlet cover, and a rubbish can is arranged on the small rubbish inlet; the lower portion of the upper cover is provided with first movable pivot points and second movable pivot point; the lower portions of the first movable pivot points are connected with pull rods which are provided with adjusting nuts; limiting hooks are arranged in the pit; the rubbish can, an ozone generator and four or more push rods are arranged on the lower platform; the push rods on the left side are connected with the second movable pivot points; hydraulic ascending and descending mechanisms are arranged below the lower platform and comprise third movable pivot points connected with upper connecting rods; the other ends of the upper connecting rods are connected with lower rolling wheels; fourth movable pivot points are arranged in the pit and connected with lower connecting rods and oil cylinders through swivel pins; the other ends of the lower connecting rods are connected with upper rolling wheels; a waste inductor is arranged on the lower portion of the upper cover; push oil cylinders are arranged on the lower platform; piston rods of the push oil cylinders are fixed to the rubbish can through pull pins; and the inner wall of the pit is provided with a water level inductor.

The invention relates to a large filter-press cloth-washing mechanism and a travel brake cleaning method. The large filter-press cloth-washing mechanism comprises a filter-press filter-cloth washing mechanism, wherein guide rails in the filter-press filter-cloth washing mechanism are arranged at two sides of a filter-press main beam, a supporting frame is a four-upright frame, the lower end of the four-upright frame is positioned on the guide rails through a horizontal travelling mechanism and moves along the guide rails; the guide rails are electromagnetic guide rails which are connected with an electromagnetic controller through a control wire, a lifting mechanism is positioned at the upper end of the supporting frame and connected with a cleaning frame in the supporting frame, and the lifting mechanism drives the cleaning frame to lift along the inner wall of the supporting frame. The invention has the advantages that: firstly, the lower horizontal travelling mechanism is adopted, the guide rails are arranged at two sides of the guide rail without increasing a huge guide rail supporting frame; secondly, the lifting mechanism is driven by a low-speed motor and is lifted stably and reliably; and thirdly, the cleaning frame is positioned by guide wheels and the electromagnetic guide tracks, therefore, the cleaning mechanism is more stable and reliable and safer in travelling, and the cleaning frame is lifted more stably and reliably.

The invention discloses a sand mold assembly workbench suitable for a dieless composite forming process. The sand mold assembly workbench comprises a clamping mechanism, a turnover mechanism, a lifting mechanism and a conveying mechanism, and the clamping mechanism and the turnover mechanism are arranged on the lifting mechanism; the conveying mechanism drives the lifting mechanism, the clamping mechanism and the turnover mechanism to move, and / or drives a sand mold to move; and the lifting mechanism is used for driving the clamping mechanism and the lifting mechanism to ascend and descend. After the sand mold is placed in place, the conveying mechanism drives the lifting mechanism, the clamping mechanism and the turnover mechanism to move to the position above the sand mold, the lifting mechanism drives the clamping mechanism and the turnover mechanism to descend, after the sand mold is placed in place, the clamping mechanism clamps the sand mold, the lifting mechanism ascends again, the conveying mechanism acts to drive the sand mold to move to an assembly station, and the turnover mechanism acts to drive the sand mold to turn over; and after overturning is completed, the lifting mechanism descends, the clamping mechanism loosens the sand mold, and the conveying mechanism can convey the sand mold. Therefore, the sand mold assembly workbench can realize overturning, clamping, transferring, assembling and the like of the sand mold, so that the process time is shortened, and the labor force is saved.

The invention discloses a multipurpose linear driver for an electric lifting table and a mounting method of the multipurpose linear driver. The multipurpose linear driver comprises a driving mechanism, a cross beam, a lifting mechanism and a horizontal moving mechanism, wherein boxes are symmetrically arranged on the left side and the right side of the cross beam and connected through a transmission shaft; first power bevel gears are symmetrically arranged at two ends of the transmission shaft, and the horizontal moving mechanism is arranged on the top surfaces of the boxes and connected in the boxes. The mounting method of the multipurpose linear driver comprises the following steps: mounting of the driving mechanism, mounting and positioning of the boxes and the lifting mechanism, mounting of the horizontal moving mechanism, mounting of support bars and operation of the linear driver. Mounting and dismounting of the electric lifting table are facilitated, maintenance is facilitated,and because the electric lifting table is driven by a single drive motor, stability and reliability of the electric lifting table are greatly improved, noise is reduced, transverse movement of the tabletop can be realized, and flexibility of the table in use is enhanced.

The invention belongs to the technical field of geological imaging systems, and discloses a geological survey hole imaging detection system, which comprises a lifting detection plate; a lifting driving mechanism, arranged in the lifting detection plate, and driving output ends extending out of the lifting detection plate being arranged on the two sides of the lifting driving mechanism respectively; lifting vertical frames, the number of the lifting vertical frames is two, and the two lifting vertical frames being located on the two sides of the lifting detection plate correspondingly, liftingmatching parts in transmission fit with the driving output ends being arranged on the inner sides of the lifting vertical frames in the height direction of the lifting vertical frames, and the liftingdetection plate can move up and down between the lifting vertical frames through transmission fit of the lifting matching parts and the lifting driving mechanisms; and a push rod, one end of the pushrod being connected to the bottom plate of the lifting detection plate through a rotating motor. The system has an ultrasonic imaging function and a drilling imaging function, two images can be collected and formed respectively, the geological structure in the tunnel can be known conveniently through the two images, and the system is more convenient to use.

The invention discloses a climbing type layer-height-adjustable storage goods shelf and a control method thereof, and belongs to the technical field of shelves. The climbing type layer-height-adjustable storage goods shelf comprises a rectangular frame, a plurality of layer frames, positioning mechanisms and climbing mechanisms, wherein the left sides and the right sides of the layer frames are mounted on two corresponding stand columns on the left and right sides of the rectangular frame through the positioning mechanism respectively; the climbing mechanisms are mounted between the layer frames and the rectangular frame or between the layer frames, used for driving the layer frames to be adjusted in height on the rectangular frame and matched with the positioning mechanisms to achieve height adjustment and positioning supporting of each layer of the layer frames. The layer frames of the storage goods shelf are mounted on the rectangular frame through the positioning mechanisms and theclimbing mechanisms, height adjustment and positioning supporting of each layer of the layer frames can be achieved through cooperation of the positioning mechanisms and the climbing mechanisms, automatic adjustment of the height of the layer frames is achieved, the layer frames can be stably supported and fixed after being adjusted, layer height adjustment is stable and convenient, the use safety is high, and the bearing capacity is high.

The invention discloses a 3D printer using ceramic as a raw material. The 3D printer using the ceramic as the raw material comprises a laser head assembly, an exhaust assembly and a forming platform assembly. The laser head assembly comprises a laser, a light path adjusting combined mirror, an XY scanning galvanometer and a focusing lens. The forming platform assembly comprises a forming platform and a material laying mechanism. The material laying mechanism comprises a material laying hopper and a cylinder. A light ruler is installed on one side of the forming platform assembly, a lifting lead screw pair is installed on the other side of the forming platform assembly, a lifting motor is installed at the bottoms of lifting lead screws in the lifting lead screw pair, an upper limiting block is arranged on the tops of the lifting lead screws in the lifting lead screw pair, and a lower limiting block is arranged at the bottoms of the lifting lead screws in the lifting lead screw pair. The exhaust assembly comprises an exhaust hood and an exhaust pipe connected to the exhaust hood, wherein an exhaust fan is connected to the exhaust pipe, and a purifier is connected to the end of the exhaust pipe. According to the 3D printer using the ceramic as the raw material, the light path of the laser is easy to control, pollution caused by harmful gas emission to the environment is avoided, the forming platform is high in movement accuracy, and the 3D printing effect is good.

The invention discloses a lifting mechanism of a frame splitting machine for industrial aquaculture. The lifting mechanism comprises a lifting body, a sliding block body and a lifting screw rod assembly, wherein the lifting body is connected with the sliding block body, the sliding block body is positioned on the lifting screw rod assembly, and the lifting screw rod assembly drives the lifting body to slide up and down through the sliding block body. According to the lifting mechanism, the overall structural design is ingenious and reasonable, a driving motor drives a lifting screw rod to rotate through a gear conversion box, so that the lifting of the sliding block body is achieved to drive the lifting of the lifting body, the step-by-step separation between a lower culture frame and an upper culture frame stack is achieved, the assembly and disassembly of the culture frame stack is more convenient, the assembly line operation of cocoon collection in the culture frame is achieved, thewhole operation is more automated, and the labor intensity of workers is effectively reduced; and the lifting screw type lifting is adopted, the stability in the lifting process of the lifting body can be effectively guaranteed, the lifting process of the lifting body is more smooth and stable, collision caused by swinging of the lifting body in the lifting process is avoided, and the operation safety performance is improved.

The invention discloses an exhibition rack for selling handicrafts, comprising a support rod, wherein a lifting base is welded on the bottom of the support rod, a limited position plate is welded on the support rod, a sleeve is sleeved on the top of the limit plate, and a third gear disk is welded on the outside of the sleeve. In this invention, through the arrangement of the first fixed gear plate and the first gear plate, so that the support plate can rotate automatically while rotating around the support rod, the second gear disk and the second fixed gear disk are arranged so that the placing disk rotates by itself when rotating around the first rotational axis, so that the customers can observe the handicrafts in an all-round and intuitive manner without dead angles, At the same time,when the pallet rotates, the placing disk on the pallet can sequentially pass through the illumination light of the LED projection lamp, on the one hand, it is convenient for the user to clearly observe, on the other hand, the handicraft becomes more eye-catching through the intermittent reflection of the activity, thereby increasing the sales volume.

The invention discloses a projector bracket for handling official business. A frame plate and a base are included; a hollow-out plate is arranged on the inner side of the frame plate, and is providedwith a slide groove; two sliding pieces are connected in the slide groove in a sliding manner; a limiting block is welded to one side of the top of each of the two sliding pieces; and one side of eachlimiting block is located on the corresponding sliding piece and is in threaded connection with a screw. In the projector bracket for handling the official business, firstly, the limiting blocks aremoved and made to be attached to the side edges of a projector; then by twisting a rotary knob, a gasket is made to be closely fixed to the upper surface of the hollow-out plate, at the moment, the positions of the limiting blocks are limited, the structure is simple, lateral migration of the projector can be avoided, and therefore a certain protective effect is achieved for the projector; secondly, by rotating a rotating disk, a second bevel gear drives a first bevel gear to rotate, and therefore a lead screw is made to rotate, due to the rotating effect of the lead screw, a spiral sleeve slowly moves upwards, and therefore the purpose of adjusting the height of the projector bracket is achieved; and the structure is simple, operation saves labor and is convenient, and the lifting processis stable and reliable.

The invention discloses a mould lifting device of a three-dimensional bag forming machine, and the mould lifting device solves the problems that a current lifting device is slow in response in a practical working process, noises are great during motor driving, and a mould is shifted. The mould lifting device comprises a machine base and a mould assembly, wherein a drive part is arranged above the machine base; the drive part is connected to the mould assembly through a transmission mechanism; the mould assembly is arranged below the machine base and is in sliding fit with the machine base vertically; the transmission mechanism comprises a transmission shaft and a first synchronizing wheel connected to the drive part; the first synchronizing wheel is arranged on the transmission shaft in a sleeved manner, and is in linkage connection to the transmission shaft; the two ends of the transmission shaft are symmetrically provided with second synchronizing wheels; and the second synchronizing wheels are connected to the mould assembly. The mould lifting device further has the advantages of simple structure, convenient assembly, low noise and quick response, reliable action and long service lifetime and the like.