58results about How to "Play the role of fixed limit" patented technology

The invention provides a special cooling bus groove for a high-voltage bus, and relates to the technical field of bus grooves. The special cooling bus groove for the high-voltage bus comprises a bus groove body, two first sliding grooves are formed in the front side of the bus groove body, two first sliding grooves are formed in the back side of the bus groove body, a second sliding groove is formed in one side of the inner wall of each first sliding groove, a sliding block is arranged in each second sliding groove in a sleeved mode, connecting plates are fixedly connected to the opposite sides of two sliding blocks respectively, and six copper conductors are arranged in the bus groove body in a sleeved mode. The first sliding grooves, the second sliding grooves, the sliding blocks, the connecting plates and the copper conductors are arranged, during installation, the sliding blocks and the connecting plates are inserted into the second sliding grooves and the first sliding grooves correspondingly, then the copper conductors are pushed, the sliding blocks slide in the second sliding grooves, the connecting plates slide in the first sliding grooves, the copper conductors are slowly inserted into the bus groove body, and therefore installing and detaching are convenient.

The invention relates to a copper plating production line for producing printing rollers. The copper plating production line for producing the printing rollers includes a support frame; a circular double speed chain is arranged on the support frame; a horizontal moving frame is connected to the circular double speed chain; a vertical moving frame is slidingly connected to the horizontal moving frame; the vertical moving frame includes a connecting plate, a pneumatic finger connected to the lower end of the connecting plate, and a roller body limit ring fixedly connected to the output end of the pneumatic finger; a pretreatment working section, an electroplating section and a cleaning section are arranged under the support frame in order along the moving direction of the roller body; and aloading device and an unloading device are arranged between the pretreatment working section and the cleaning section. According to the invention, when performing an electroplating operation on the roller body, the circular double speed chain can drive the horizontal moving frame and the vertical moving frame to move, and the roller body can be driven to move automatically during the movement process of the horizontal moving frame and the vertical moving frame, which cannot cause collision between the roller body and the machine body; and therefore, the relatively stable movement of the rollerbody can be ensured, and the quality of the roller body electroplating can be ensured.

The invention relates to a bending processing technology of a metal plate. The bending processing technology of the metal plate adopts a bending processing device of the metal plate, and comprises a working table, a clamp bending mechanism and an internal bending unit, wherein the clamp bending mechanism is arranged at the front end of the upper end of the working table in a bilateral symmetry manner, the internal bending unit is mounted at the rear end of the upper end of the working table in a sliding fit manner, and the internal bending unit is located on the rear middle side of the clamp bending mechanism. According to the technology, bending processing of the metal plate is performed by adopting design concept of a multi-aspect adjustable structure, on the basis of capacity of bendingin a longitudinal direction, the overall device is additionally provided with a structure with the effect of controlling a bending angle and width of a formed part, then the applicable range of the overall device is greatly expanded, and meanwhile, the bending quality and accuracy of the metal plate are improved with adoption of multiple structures with limiting and guiding effects.

The invention discloses a surface corrosion preventing treatment method based on aluminum profiles. The surface corrosion preventing treatment method comprises the following steps that the aluminum profiles are fixedly arranged on a conveying belt, and the aluminum profiles automatically advance forwards along with the conveying belt; when the aluminum profiles advance into a treatment machine body, an anti-corrosion coating is sprayed to the surfaces of the aluminum profiles, a rotation mechanism drives the aluminum profiles to rotate, and spraying of the aluminum profiles is more uniform; anadsorption mechanism is utilized for absorbing and filtering the coating scattered into equipment in the spraying process; the aluminum profiles obtained after spraying are placed on the conveying mechanism one by one, and the aluminum profiles are backwards conveyed; and a cleaning mechanism can clean the surface of the conveying belt rotating to the position below the treatment machine body. Through cooperative usage of a high-pressure sprayer and an anti-corrosion special material spraying box, automatic spraying is conducted on the surfaces of the aluminum profiles, and the work efficiency is improved.

The invention relates to the technical field of traffic signals, and discloses a photovoltaic traffic lamp for traffic police, for municipal generating. The photovoltaic traffic lamp for traffic police, for municipal generating includes a pedestal, wherein a lamp box is fixedly connected with the middle part of the top of the pedestal; the middle part of the top of the lamp box is clamped with a first bearing; the internal of the first bearing is fixedly connected with a fixed pole; the outer surface of the fixed pole is fixedly connected with a fixed sleeve; the side surface of the fixed sleeve is fixedly connected with a solar panel through support frames; one side, being far away from the support frames, of the fixed sleeve, is fixedly connected with a handle; the outer surface of the fixed pole is arranged at the lower side of the fixed sleeve, and is fixedly connected with a second bearing; the second bearing is clamped at the middle part of the a connection sleeve; the side surface of the connection sleeve is fixedly connected with the top of the lamp box through a support bar; and the bottom of the inner cavity of the pedestal is fixedly connected with a storage battery. Thephotovoltaic traffic lamp for traffic police, for municipal generating provides convenience for usage of the signal lamp by converting the solar energy into the electric energy through the solar panel, and enables the solar panel to align to the sun at every moment to perform conversion of electric quantity by pulling the handle to drive the second bearing to rotate in the connection sleeve.

The invention discloses a rice bagging device which comprises a cart. A box body is arranged above the cart, the cross section of the box body is square, the box body and a cart plate of the cart arefixed through brackets on the two sides, the upper end of the box body is fixedly provided with a discharging hopper and communicates with the discharging hopper, the interior of the box body is provided with two square frames fixed to the inner wall of the box body, baffles are attached to the upper ends of the square frames, one end of each baffle passes through the side wall of the box body andis slidably connected with the side wall of the box body, the side end of the box body is fixedly provided with a horizontal plate, a vertical plate is fixed at the side end of the horizontal plate,a lead screw penetrates through the vertical plate, a hand wheel is fixed to one end of the lead screw, the other end of the lead screw is rotatably connected to the side wall of the box body througha bearing, the lead screw is sleeved with a lead screw nut and is in threaded connection with the lead screw nut, the upper end of the lead screw nut and the baffles above the inside of the box body are fixed, transverse bars are fixed below the two ends of the box body, the transverse bars are sleeved with sleeves and are in sliding connection with the sleeves, the sleeves are provided with boltsfor fastening the transverse bars, and the lower ends of the sleeves are fixedly provided with half clamps. By means of the rice bagging device, bag openings of rice bags are conveniently fixed, andrice bagging and weighing are facilitated.

The invention belongs to the field of bundling tubes, and particularly relates to a multi-channel optical cable bundling tube. The multi-channel optical cable bundling tube comprises a protecting sleeve, a solid cylindrical body is arranged in the protecting sleeve, a reinforcing cavity is formed in the center of the solid cylindrical body in the axial direction of the solid cylindrical body, a tensile tube is arranged in the reinforcing cavity, a plurality of optical cable storing cavities are evenly distributed around the reinforcing cavity, a lubrication cavity is formed between every two adjacent optical cable storing cavities, the lubrication cavities communicate with the optical cable storing cavities through a plurality of liquid delivery channels, the lubrication cavities are filled with lubricants used for reducing friction force between optical cables and the optical cable storing cavities, reinforcing tubes are fixedly connected to the side walls, away from the reinforcing cavity, of the lubrication cavities, the other ends of the reinforcing tubes penetrate out of the solid cylindrical body in the radial direction of the solid cylindrical body, and the protecting sleeveis provided with a communicating tube corresponding to the reinforcing tube in position. The multi-channel optical cable bundling tube is provided with the lubrication cavities, the lubricants can overflow in the whole process, the friction force between the optical cables and the optical cable storing cavities is reduced, the delivery distance is increased, and thus the laying efficiency is improved.

The invention relates to the technical field of teaching auxiliary facilities, and discloses a formalin specimen apparatus with good sealing performance. The formalin specimen apparatus comprises a specimen barrel, wherein the top of the specimen barrel is movably connected with a sealing cover, the inner wall of the sealing cover is movably connected with a sealing plate, the bottom of the sealing plate is fixedly connected with a plug, the plug is movably connected with the top inside the specimen barrel, the top of the sealing plate is fixedly connected with a pressure plate, the middle part of the top of the pressure plate is connected with a first bearing in a buckling manner, the interior of the first bearing is fixedly connected with a threaded rod, and the top of the threaded rod penetrates through a sealing cover and is movably connected with the top of the sealing cover. According to the formalin specimen apparatus with the good sealing performance, the pressure plate is enabled to move downwardly by adjusting the threaded rod so as to drive the sealing plate to move downwardly, and the plug is buckled inside the specimen barrel, so that the sealing of the plug for the specimen barrel is facilitated, and the advantage of sealing the specimen barrel is realized; and the problems that the existing sealing barrel is simple in sealing and the requirement for sealing and storing a specimen for a long time cannot be met can be solved.

The invention discloses a milk atmospheric pressure filling machine. The milk atmospheric pressure filling machine comprises a liquid storage tank (1), a filling valve (2), a spindle (3), bottle support trays (5), a bottle inlet pulling wheel (6), a bottle outlet pulling wheel (7), a lifting device (9) and a transmission device (10); the bottom end of the liquid storage tank is fixedly provided with the filling valve and matched with the filling valve, the liquid storage tank (1) is fixedly arranged on the spindle, the periphery of the spindle is provided with the bottle support trays, the bottoms of the bottle support trays are provided with a guide plate (8), the guide plate is symmetrically provided with the bottle inlet pulling wheel and the bottle outlet pulling wheel, the bottle inlet pulling wheel is matched with the bottle outlet pulling wheel, a rack is arranged under the guide plate, the rack is internally provided with the lifting device and the transmission device, the bottle support trays sleeve the lifting device and are matched with the lifting device, and the spindle penetrates through the rack and is connected with the transmission device. The milk atmospheric pressure filling machine has the advantages that the structural design is simple and reasonable, the humidity and temperature of the liquid storage tank are controlled accurately, the leakproofness of thepipelines is excellent, a lifting rod drives a bottle support tray rod to ascend and descend, so that the bottle support tray rod cannot deviate, and a lifting rod sliding sleeve cannot cause friction when ascending and descending in a bottle support tray rod sleeve.

The invention discloses a USB 2.0 TYPE-C connector convenient for assembling a welding wire, which comprises a shielding case, an insulating body and a plurality of conductive terminals, wherein the plurality of conductive terminals comprise power supply terminals, grounding terminals and signal terminals, each power supply terminal and each grounding terminal respectively comprise a base portion, an upper contact end and a lower contact end, and the upper contact end and the lower contact end are integrally molded on the base portion; each signal terminal comprises a base portion and a contact portion which is integrally molded on the base portion, the contact ends of the signal terminals and the upper contact ends or the lower contact ends of the power supply terminals and the grounding terminals are arranged in a row, the base portions of the plurality of conductive terminals are provided with wire welding portions and extension portions in a backward extending mode, and the extension portion and the wire welding portion are combined to form a clamping opening used for clamping a circuit board. Therefore, the power supply terminals and the grounding terminals are designed to be of the structure that the base portion and the two contact ends are integrally molded, and the clamping opening is formed, so that the wire welding process of the connector is simplified, the operation is convenient, and the production efficiency is improved. Meanwhile, the relative stability of the conductive terminals and the circuit board is strengthened.

The invention relates to a fiber drawing furnace mouth sealing device and a control method thereof. The fiber drawing furnace mouth sealing device comprises an extensible sealing circular ring, a connecting piece, an air exhausting and charging device, a laser diameter measuring instrument, an air pressure sensor, and a controller in signal connection with the laser diameter measuring instrument, the air pressure sensor and the air exhausting and charging device and analyzing preform diameter data to control the air exhausting and charging device to perform corresponding air exhausting and charging actions, wherein the laser diameter measuring instrument measures an optical fiber preform diameter d and transmits the diameter to the controller through a data line. The air pressure sensor measures the air pressure p in the extensible sealing circular ring and transmits the air pressure to the controller, and the controller conducts contrast control on air exhausting and charging. The fiber drawing furnace mouth sealing device has the advantages that the size of the extensible sealing circular ring is timely adjusted according to the change of the preform diameter, an optical fiber drawing furnace mouth upper sealing effect is ensured in the whole fiber drawing process, accordingly high-speed stable fiber drawing of an irregular preform is achieved, and raw material cost waste caused by untimely adjustment can be greatly saved due to automatic control.

The invention provides an adjustable supporting device for constructional engineering construction. The adjustable supporting device comprises a supporting bottom plate, side plates and vertical threaded rods; a fixing box is arranged in the middle of the upper end of the supporting bottom plate, and a set of fixing devices are symmetrically arranged on the left side and the right side of the fixing box; the upper end of the fixing box is fixedly connected with a rail box, and a lifting rod is clamped in a sliding groove in the rail box in a sliding mode; and the two side plates are symmetrically arranged and connected with the supporting plate in a clamped mode, and limiting devices are arranged on the surfaces of the side plates. According to the adjustable supporting device, through thearrangement that a fixing nail penetrates through a nail pulling plate and the supporting bottom plate to be inserted into the ground, the supporting bottom plate can be fixed, the stability of the device is improved, through the arrangement of the nail pulling plate, the fixing nail can be driven to move upwards by rotating connecting threaded rods, thus the effect of assisting in nail pulling is achieved, and the problem that the fixing nail is not prone to being pulled out after being nailed to the ground caused by large size is solved.

The invention discloses a nailing device for paperboard production. The nailing device for paperboard production comprises paperboards, a conveying device and supporting frames, fixing rods and supporting rods are arranged on the supporting frames, connecting devices are uniformly arranged on the supporting rods, a first air cylinder is arranged at the bottoms of the supporting rods, and rotatingboards are arranged on the connecting devices. A rectangular groove is formed in the conveying device, a second air cylinder is arranged at the bottom of the rectangular groove, fixed frames are arranged on two sides of the conveying device, first sliding grooves are formed in the fixed frames, rodless air cylinders are arranged in the first sliding grooves, sliding boards are arranged on the rodless air cylinders, second sliding grooves are formed in the sliding boards, nailing mechanisms are arranged in the second sliding grooves, a connecting board is arranged between the fixed frames, a third air cylinder is arranged at the bottom of the connecting board, and a limiting device is arranged on the end part of the third air cylinder. The nailing device for paperboard production solves theproblems that when nailing is carried out on existing paperboards, the paperboards are required to be placed on a nailer manually in the feeding process, then, nailing is carried out, dangers are prone to occurring, and hands are prone to being damaged.

The invention belongs to the technical field of mechanical equipment silencing, and particularly relates to a silencer of a microtype gas thruster. The silencer is mainly used for solving the problem that an existing microtype gas thruster is likely to cause air pollution and noise pollution and damage adjacent equipment and devices. According to the adopted technical scheme, the silencer of the microtype gas thruster comprises a base and a top cover, and further comprises a first silencing ring, a second silencing ring, an outer circle shell, a fixing ring and a silencing material, the base is in threaded connection with the lower end of the microtype gas thruster, the first silencing ring, the second silencing ring and the outer circle shell are sequentially arranged on the periphery of the microtype gas thruster, the lower ends of the the first silencing ring, the second silencing ring and the outer circle shell make contact with the base, the space between the first silencing ring and the second silencing ring and the space between the second silencing ring and the outer circle shell are filled with the silencing material, and the top cover and the upper end of the microtype gas thruster are in threaded connection. The silencer of the microtype gas thruster has the advantages of being good in silencing effect and long in service life.

The invention relates to an ecological plate surface polishing treatment device and method. The treatment device comprises a base, a placing platform unit, four corner polishing units, a connecting frame, a lifting cylinder, a pressing plate and a surface polishing device. The placing platform unit is installed on the base, the four corner polishing units are uniformly arranged on the placing platform unit, the connecting frame is installed at the upper end of the base, the connecting frame is installed at the upper end of the base, the middle of the upper end of the connecting frame is connected with the pressing plate through the lifting cylinder, and the surface polishing device is installed on the front side of the upper end of the connecting frame. The problems that ground thicknessesof corners can be different and the like which are easily caused by the fact that during traditional polishing processing, an ecological plate needs to be frequently turned for polishing of differentpositions, the corners of the ecological plate are usually polished by manual sandpaper because the working area is small and the corners are arc surfaces, and manual polishing strength cannot be consistent can be solved.

The invention relates to the technical field of cable cutting and winding, in particular to high-temperature-resistant and high-voltage-resistant cable winding equipment convenient to cut. The high-temperature-resistant and high-voltage-resistant cable winding equipment comprises a conveying mechanism, a winding mechanism, a limiting mechanism, a clamping mechanism, a cutting mechanism and a rotating mechanism; one end of the conveying mechanism is connected with the rotating mechanism, and when a cable needs to be wound, the winding mechanism can be conveniently carried through the rotating mechanism, then the cables in different areas can be conveniently wound through the conveying mechanism, and the operation is convenient; the limiting mechanism is arranged inside the winding mechanism, the cable can be conveniently wound through the winding mechanism, and before winding, the limiting mechanism inside the winding mechanism can be used for fixing and limiting the winding mechanism,so that the winding mechanism is prevented from sliding off and shaking in the winding process; and the cutting mechanism is arranged inside the clamping mechanism, the cable needing to be cut is clamped and fixed through the clamping mechanism, then the cutting mechanism is used for cutting, the operation is convenient, and the physical strength is saved.

The invention provides an X-ray breathing gating mechanism. The X-ray breathing gating mechanism comprises a first bed board, wherein a sliding area is arranged in the middle of the first bed board, and a second bed board is arranged on the sliding area in a sliding mode; a sliding adjusting mechanism is arranged on the side edge of the first bed board and used for adjusting the sliding position of the second bed board; and a breathing detection mechanism is arranged in the middle of the second bed board. According to the X-ray breathing gating mechanism, 1, the breathing detection mechanism is arranged, fluctuation of the abdomen of a photographer is detected through a pressure sensor, shooting is controlled to be started, accuracy is high, and shooting quality is good; and 2, an abdomen binding belt is adopted in the breathing detection mechanism and is in a tensioned state all the time, the abdomen binding belt plays a role in fixing and limiting the photographer, the pressure sensor is tightly attached to the abdomen of the photographer all the time, detection accuracy is guaranteed, and the X-ray breathing gating mechanism is more suitable for children and special photographers with unclear consciousness under the cooperation of a foot fixing mechanism and a wrist binding mechanism.

The invention relates to a glass substrate carrying and conveying device. The glass substrate carrying and conveying device is provided with a supporting frame, horizontal guiding rails are arranged on an upper layer of the supporting frame, a glass substrate supporting frame is arranged on the horizontal guiding rails, a roller shaft conveying device is horizontally arranged on a lower layer of the supporting frame, the glass substrate supporting frame comprises a supporting plate and a driving device of the supporting plate, and at least three L-shaped supporting arms are distributed on thesupporting plate evenly; and vertical guiding rails are arranged on the rear sides of the horizontal guiding rails and the roller shaft conveying device, a supporting seat and a driving device of thesupporting seat are arranged on the vertical guiding rails, a roller supporting frame is arranged on the supporting seat and comprises at least two roller support frames, horizontal conveying rollersare evenly distributed on the roller support frames and on the upper side of the roller installing seat in the forward and backward direction, the roller support frames are arranged on the supportingseat at the opposite positions between every two adjacent L-shaped supporting arms, and a horizontal conveying roller driving device is arranged on the wheel installing seat. According to the glass substrate carrying and conveying device, the structure is concise, the appearance is compact, the cost is low, the installation and adjustment are convenient, the working efficiency is high, and the working safety coefficient is high.

The invention relates to a metal plate bending machining die. The metal plate bending machining die comprises a workbench, a clamping and bending mechanisms and an inward bending unit, wherein the clamping and bending mechanism is arranged at the front end of the upper end of the workbench in a left and right symmetry mode, the inward bending unit is installed at the rear end of the upper end of the workbench in a sliding fit mode, and the inward bending unit is located on the rear middle side of the clamping and bending mechanism. According to the metal plate bending machining die, the designconcept of a multi-aspect adjustable structure is adopted for metal plate bending machining, and on the basis of longitudinal bending, a structure with the function of controlling the bending angle and the width of a formed part is additionally arranged on the whole device, so that the application range of the whole device is greatly widened; and meanwhile, a plurality of structures with limitingand guiding functions are adopted to improve the bending quality and precision of a metal plate.

The invention relates to assembling equipment for a coaxial connector. The assembling equipment comprises a workbench, the upper end of the workbench is fixedly connected with a driving motor, the driving motor is linked with a driving turntable, the upper end of the turntable is provided with a plurality of tool clamps, and the upper end of the workbench is provided with a lower insulator mounting assembly, an inner conductor mounting assembly, an upper insulator mounting assembly, a shell mounting assembly and a locking ring mounting assembly. When the tool clamps rotate, the lower insulatormounting assembly, the inner conductor mounting assembly, the upper insulator mounting assembly, the shell mounting assembly and the locking ring mounting assembly can be used for mounting and assembling a lower insulator, an inner conductor, an upper insulator, a shell and a locking ring in sequence; therefore, the coaxial connector can be automatically assembled, the precision of the automatically assembled coaxial connector is high, meanwhile, the assembling efficiency is greatly improved, and the labor force can be saved.

The invention discloses a household folding ladder which comprises a front support frame and a rear support frame, wherein a top handrail is arranged at the upper part of the front support frame; an auxiliary tool frame is arranged at the lower end of the right part of the top handrail; the lower side of the top handrail is articulated with the rear support frame; the middles of the two ends of the front surface of the front support frame are articulated with side handrails; a first footboard, a second footboard, a third footboard and a fourth footboard are arranged between side walls of the front support frame from the top down; a safety fastener is arranged at the rear part of the upper end of the first footboard in a penetrating manner; a first fixing rod, a second fixing rod and a third fixing rod are arranged between side walls of the rear support frame from the top down; various operation tools are placed in the auxiliary tool frame; a person on the ladder can take the tools conveniently; a splayed leg separation design can allow the stressed area of the folding ladder to be larger; the folding ladder is more steady; the safety fastener can exert a fixing and limiting effect;and the stability and safety of the folding ladder are ensured.

The present invention relates to the technical field of freshwater fish processing and also discloses a fish body segment cutting and washing device based on freshwater fish processing. The device uses a mechanical cutting method, can cut a plurality of fish bodies at one time, is provided with a fish segment washing component, and can effectively solve problems that artificial operations are relatively low in efficiency, and processing quality is difficult to guarantee. The structure of the device comprises a rectangular parallelepiped bottom plate; the bottom plate is provided with a transmission component; the upper part of the transmission component is provided with a cutting component; the bottom part of the transmission component above the bottom plate is welded with a liquid collecting box with an upper opening; the upper end part of the liquid collecting box is welded with a second tray with a size matched with the size of the liquid collecting box; and the upper end part of the front and rear side walls of the second tray is welded with the washing component. The device is simple to operate, easy to use and suitable for a variety of places.

The invention discloses a separable combination-type full-amplitude photovoltaic power generation tile, which comprises a tile body, a photovoltaic module, a cooling fixing board and at least one supporting buckle, wherein the sunward side of the tile body is provided with a tile hanging convex body, an occlusion structure and a module mounting face; the photovoltaic module is arranged on the module mounting face; the upper end of the module mounting face is provided with a cooling groove; the cooling groove is internally provided with a connection blind hole; the lower end of the module mounting face is provided with supporting buckle mounting structures; the left edge, the right edge and the bottom edge of a solar panel of the photovoltaic module are flush with the left edge, the right edge and the bottom edge of the module mounting face; the cooling fixing board comprises a bottom board and a limiting structure; the cooling fixing board is fixedly arranged in the cooling groove through the bottom board; the limiting structure is limited at the upper end of the solar panel; the supporting buckles are fixedly arranged in the supporting buckle mounting structures; and the supporting buckles hold and limit the lower end of the solar panel. The separable combination-type full-amplitude photovoltaic power generation tile has the advantages of high production efficiency, low making cost, attractive appearance, applicability, quick mounting, energy conservation and environmental protection, and high roof utilization rate.

The invention relates to the technical field of fan-shaped slices, and discloses a fan-shaped slice one die double punch device and a double punch technology thereof. The double punch device comprisesa main body, wherein the inner wall of the bottom of the main body is provided with a grooved plate, the inner part of the grooved plate is provided with a material leakage port, and the top of the grooved plate is provided with a fan-shaped slice. According to the fan-shaped slice one die double punch device and the double punch technology thereof, a strong pressure air cylinder, a punching plate and punching heads are arranged and the relation between the strong pressure air cylinder, the punching plate and the punching heads is exist, when the strong pressure air cylinder is started, a hydraulic rod at the bottom of the strong pressure air cylinder moves and drives the punching plate to move downward, with the movement of the punching plate, the punching heads contact the fan-shaped slice and the simultaneously punching operation of the two punching heads is carried out for the fan-shaped slice, in the process of punching, the bottom of the punching plate can contact with the top of the fan-shaped slice, at this time, limiting plates at both ends of the punching plate contact with the two ends of the fan-shaped slice, and plays a fixing and limiting role on the fan-shaped slice, so that the fan-shaped slice rom shaking in the process of punching is prevented, the punching effect is better, the working efficiency of punching is effectively improved and the practicability ofthe device is improved.

The invention discloses a milk filling machine lifting device. The milk filling machine lifting device comprises a bottle support tray rod (1), a bottle support tray rod sleeve (2), a lifting rod (3),a spring (4), a lifting rod sliding sleeve (5), a pin shaft (7), an idler wheel (9), a lifting cam (10), a guide block (11), tracks (12) and a track groove (13); the top end of the bottle support tray rod is arranged in a fixed tray, the outer surface of the bottle support tray rod is sleeved with the bottle support tray rod sleeve, the bottle support tray rod sleeve is internally provided with the track groove, the lifting rod is arranged under the bottle support tray rod, the outer edge of the lifting rod is sleeved with the spring, the lifting rod and the spring are arranged in the liftingrod sliding sleeve, the two sides of the lifting rod sliding sleeve are provided with the tracks, the pin shaft is arranged under the lifting rod, the idler wheel sleeves the other end of the pin shaft, the joint between the pin shaft and the idler wheel is provided with the guide block, and the lifting cam is arranged under the idler wheel. The milk filling machine lifting device has the advantages that the structural design is simple and reasonable, the lifting rod drives the bottle support tray rod to ascend and descend, so that the bottle support tray rod cannot deviate, and the lifting rod sliding sleeve cannot cause friction when ascending and descending in the bottle support tray rod sleeve.

The invention discloses a hole punching apparatus for wood materials. The hole punching apparatus comprises a base, wherein a plurality of support plates are symmetrically and fixedly arranged on themiddle position of the top surface of the base, through holes are arranged on the upper portions of the opposite surfaces of the support plates in a penetrating manner, a connection shaft is rotatablyconnected in the through holes in a sleeved manner, one ends, inside the through holes, of the connection shaft are provided with insertion grooves, the top surfaces of both ends of the base are fixedly connected to support tables through support columns, the top surface of the support table is fixedly provided with a gas cylinder, the free end of the gas cylinder is fixedly connected to the middle position of the side wall of one end of a movement plate, the bottom end of the movement plate is slidingly snapped and connected on the top surface of the support table, a first motor is fixedly arranged on the middle position of the top surface of the support table, the output shaft of the first motor is fixedly connected to a rotation block, and the front ends of the rotation blocks are snapped and connected in the insertion grooves arranged on both ends of the connection shaft. According to the present invention, by using the different types of the hole punching cutters connected to theouter end of the connection rod through the threads, the various punching operations on the wood materials can be performed by arranging different types of the hole punching cutters so as to improvethe working efficiency and the standardization.

The invention relates to the technical field of concrete vibrators, and discloses a concrete vibrator for prefabricated building assembly, hydraulic sleeves are uniformly mounted on the side wall of a vibration groove, the outer end parts of the hydraulic sleeves are movably sleeved with chucks, a movable groove is formed in the middle of the bottom surface of a vibration table, and a vibration motor is fixedly mounted at the bottom of a mounting block; a sleeve rod is fixedly mounted at the position, located at the bottom of the sleeve hole, of the top of the base, the top of the sleeve rod is sleeved with the sleeve hole, a sliding plate is movably sleeved with the adjusting cavity, a first electric control valve is fixedly mounted in the middle of the sliding plate, a transmission gear is movably mounted in the transmission groove, and a gear ring meshed with the transmission gear is arranged on the outer ring of the mounting block; a rotary column is movably installed in the limiting cavity, a communicating hole is formed between the adjusting cavity and the limiting cavity, a second electric control valve is fixedly installed in the middle of the communicating hole, and the vibration table is stable and uniform in vibration force on the prefabricated part formwork and good in vibration effect.