49results about How to "Act as a guide limit" patented technology

The invention discloses a dropping-resisting pen with a pen point capable of automatically retracting. The pen is composed of a pen rod, a cartridge, a spring, a positioning ring, a rotating switch, asliding block and a clamping base; a gap is formed in the side wall of the pen rod, the rotating switch is provided with a fixed shaft, a gear and a rotating handle, the cartridge penetrates a longitudinal through hole in the sliding block, the sliding block is limited by a chuck of the cartridge, a rack is arranged at one side of the sliding block, the rack is engaged with the gear, the other side end of the sliding block is guided and limited by the clamping base, during use, the rotating handle is held by the hand to be rotated towards the tail end of the pen rod, the rotating handle drives the gear to rotate around the fixed shaft, the sliding block is driven to move downwards, the chuck of the cartridge is pushed to move downwards, the cartridge is driven to move downwards, the pen point is exposed out of a pen point extending hole, and normal writing is carried out; when the pen is not used or drops down accidently, a compressed spring pushes the chuck of the cartridge to move upwards, the cartridge is driven to move upwards, the cartridge and the pen point retract, the pen point retract into the pen rod, the aim of preventing the pen point from being broken is achieved, andthe pen is convenient to use, economic, practical and high in reliability.

The invention discloses a flat-panel television wall-hanging rack comprising a television faceplate (1), an adjusting bracket (2) and a wall surface hanging plate (3). An adapter bracket (4) which is of an integrated structure and convenient for accurate positioning of a flat-panel television is inserted in the adjusting bracket (2), and the television faceplate (1) is vertically and rotationally connected onto the adapter bracket (4) which is horizontally and rotationally connected to the wall surface hanging plate (3). The flat-panel television wall-hanging rack in compact, reasonable and simple in integral structure of an adjusting mechanism, integral assembly difficulty can be effectively lowered, assembly efficiency can be improved effectively, and cost of the mechanism can be lowered.

The invention discloses an iron and steel casting welding slag removal device facilitating welding slag removal, and relates to the technical field of slag removal devices. The iron and steel castingwelding slag removal device facilitating welding slag removal comprises an operation table, wherein multiple lower stand columns are fixedly connected to the top of the operation table; a base is fixedly connected to the top ends of the multiple lower stand columns; a sliding rail is fixedly connected to the top of the base; a large bevel gear is slidably connected to the top of the sliding rail through a sliding groove; multiple upper stand columns are fixedly connected to the top of the large bevel gear; a supporting disc is fixedly connected to the top ends of the multiple upper stand columns; a clamping part is arranged on the supporting disc; a bevel pinion is engaged with the large bevel gear; a gear shaft is fixedly connected to one side of the bevel pinion; and a power transmissionpart is arranged on the gear shaft. The iron and steel casting welding slag removal device facilitating welding slag removal provided by the invention is reasonable in structure, simple in structureand adjustable in knocking force, the slag removal effect is improved, welding slag does not need to be knocked manually, the labor amount of workers is reduced, and the production speed is increased.

The invention discloses a feeding device for silicon wafer processing. The feeding device comprises a base table, supporting rods are fixedly arranged on the two sides of the outer wall of the top ofthe base table, the same top plate is fixedly arranged on the top ends of the two supporting rods, a mounting opening is formed in the outer wall of the bottom of the top plate, the same screw rod isrotationally mounted on the inner walls of the two opposite sides of the mounting opening, a driving mechanism is in transmission connection with one end of the screw rod, a guide groove is formed inthe inner wall of the top of the mounting opening, a guide block is inserted into the guide groove in a sliding mode, sliding blocks are fixedly arranged on the two sides of the outer wall of the bottom of the guide block, the two sliding blocks sleeve the screw rod in a threaded mode, the same connecting plate is fixedly arranged on the bottoms of the two sliding blocks, a telescopic rod is fixedly arranged on the outer wall of the bottom of the connecting plate, a fixing plate is fixedly arranged on the bottom end of an extension rod of the telescopic rod, an adsorption mechanism is fixedlyarranged on the bottom of the fixing plate, and a plurality of compression springs distributed at equal intervals are fixedly arranged between the outer wall of the top of the adsorption mechanism andthe fixing plate. According to the feeding device for silicon wafer processing, the initial contact force between a sucker and the silicon wafer is prevented from being too large, so that the extrusion force is reduced, and the silicon wafer protection capability is improved.

The invention relates to money binding equipment, in particular to an automatic money binding machine. The automatic money binding machine comprises a frame, and a belt conveying and cutting correction mechanism, an arrangement mechanism, a money pressing mechanism, a bonding mechanism, a support plate money overturning mechanism, a poking belt rocker arm pull rope mechanism, a money discharge mechanism and a tape reel respectively mounted on the frame; a binding belt on the tape reel is fed and cut through the belt conveying and cutting correction mechanism; moneys are pressed by the money pressing mechanism; then, the belt poking, the bonding, the money ejection and the money feeding are performed; and finally, the returning is performed. The automatic money binding machine can realize the money binding thickness self-adaption, solves the technical problem of incapability of binding fewer than 10 bundles of paper moneys, can automatically set the belt conveying length and the belt cutting according to the money value to realize firm binding treatment, can be mounted in a cash comprehensive processing system, automatically binds and conveys the paper moneys after counting and clearing, realizes intelligent and pipelined operation in bank cash treatment, saves the manpower, and improves the working efficiency.

The invention discloses a food package sealing intelligent detection device which comprises a detection workbench, a buffer groove is formed in the top of the detection workbench, a base plate matched with the buffer groove in specification is movably embedded in the top end of the interior of the buffer groove, a plurality of damping supporting mechanisms are fixed to the bottom of the base plate, and a conveying groove is formed in the right side of the top end of the detection workbench. A material conveying mechanism is rotatably installed in the material conveying groove, one side of the material conveying mechanism is provided with a material pushing mechanism. A limiting rod and a hydraulic rod are fixed to the right side of the outer wall of the top of the detection workbench, a top plate is fixed to the top end of the hydraulic rod, a sleeve is fixedly connected to the top plate in an inserted mode, the sleeve is connected to the limiting rod in a sleeving mode, and an upper pressing plate is fixed to the left side of the bottom of the top plate; a pressing plate is nested in the top of the substrate, and an extrusion mechanism is fixed to the right side of the outer wall of the bottom of the top plate. According to the device, the next material sealing performance detection work can be conveniently carried out, the detection efficiency is improved, hard extrusion generated outside a packaging bag due to too large initial extrusion acting force can be avoided, and breakage is prevented.

The invention relates to an intelligent assembly system for machining brake assemblies. The intelligent assembly system comprises a circulation type assembly conveying line, wherein a feeding mechanism, a spring mounting mechanism, a grinding mechanism, a turnover mechanism, an iron core dismounting mechanism and a discharging mechanism are sequentially distributed along the conveying direction ofthe assembly conveying line, the assembly conveying line is further provided with at least one manual assembling process, at least one assembly tool is further arranged on the assembly conveying line, and the assembly tool flows among the mechanisms along with conveying of the assembly conveying line. The system has the advantages that circulation of the assembly tool is realized through arrangement of the circulation type assembly conveying line, in addition, the feeding mechanism, the spring mounting mechanism, the grinding mechanism, the turnover mechanism, the iron core dismounting mechanism, the discharging mechanism and the manual assembling process are matched, so that semi-automatic assembling and polishing of brakes is realized, the manual labor is greatly reduced, and the working efficiency is correspondingly improved.

The invention provides an automatic lubricating device of a polisher shaft head bearing. The automatic lubricating device of the polisher shaft head bearing comprises an oil storage box and a base; the bottom of the oil storage box is arranged in an opened manner; the lower end of the oil storage box is connected to the base to form a sealed cavity; a piston is arranged in the oil storage box; a spring is arranged between the piston and the top of the oil storage box; the spring is arranged perpendicular to the piston; a one-way oil filling port is arranged in the oil storage box or the base,and the position of the piston is always higher than the one-way oil filling port; an oil outlet guide pipe is arranged on the base; a piston rod at the bottom of the piston extends into the oil outlet guide pipe; a gap is formed between the oil outlet guide pipe and the piston rod at the bottom of the piston; and a one-way oil outlet is formed in the bottom of the oil outlet guide pipe. By meansof the automatic lubricating device of the polisher shaft head bearing, the damage of the bearing rotating at a high speed due to oil shortage and overheating caused by manual lubrication careless oromission is avoided, and the consequences that equipment is shut down and losses are caused are avoided.

The invention discloses a new material processing device comprising a machine body. A supporting plate is in clearance fit with the bottom of the inner wall of the machine body through a sliding groove, and the outer end of a clamping block is rotatably connected with the inner end of a bolt; and a machining assembly is arranged in the machine body. According to the new material processing device,a first motor and a machining tool can be driven by a gear to rotate axially, so that the processing angle can be adjusted according to the use requirements; thus, multi-angle processing is achieved,and a grinding wheel, a polishing wheel and the like can be selected as the machining tool, and the use practicability is improved; through threaded connection between a bracket and the bolt, and rotatable connection between the clamping block and the bolt, new material processing parts in different sizes can be clamped and fixed, so that the use applicability is improved; the machining process is more stable, and the machining precision is guaranteed; meanwhile, the tail end of a hose can be fixed to any position according to the trapezoid of a gooseneck pipe, so that precise dust removal, impurity removal and the like are achieved. The machining precision is further improved, and the safety of workers can be guaranteed.

The invention discloses an automatic sample adding system for a reaction tube. The automatic sample adding system comprises a mounting plate, a centrifugal disc rotationally arranged on the mounting plate and used for placing the reaction tube, a dilution disc used for placing a biochemical cup and a sample disc used for placing a sample container; the system also comprises a reagent sampling mechanism which is used for automatically sucking a reagent B in the reagent B box on the mounting plate and then adding the reagent B into the reaction tube; a diluting and sampling mechanism which is used for automatically sucking the reagent A in the reagent A box on the mounting plate, then adding the reagent A into the biochemical cup, and automatically sucking liquid in the biochemical cup and adding the liquid into the reaction tube; and a sample adding mechanism which is used for automatically sucking the sample in the sample container and adding the sample into the biochemical cup. According to the automatic sample adding system for the reaction tube, corresponding solutions can be sequentially added into the reaction tube, all actions are fully automatic, the reaction tube does not need to be manually transferred after sample adding is completed, and the sample adding efficiency is high.

The invention provides a fixing device for preventing expansion of a boiler connecting pipeline and guiding, and relates to a pipeline fixing device. The problems that the model of a spring hanger of a fixing device of an existing boiler connecting pipeline can not be selected easily, free expansion of the pipeline is likely to be limited, the fixing device is likely to be out of order and jammed after thermal expansion, installation is not convenient, the occupied space is large, the cost is high, and assembly and replacement of a supporting beam are difficult are solved. The fixing device comprises a suspender, a supporting rib plate and a supporting beam. The upper end of the suspender is detachably connected with a support, the lower end of the suspender is detachably connected with the supporting beam, and the supporting rib plate is fixed on a connecting pipeline and located on the upper portion of the supporting beam; and the connecting pipeline penetrates through the center of the supporting beam, a notch is formed in the supporting beam, and the supporting rib plate is clamped on the notch and can drive the supporting beam to make horizontal movement. The fixing device for preventing expansion of the boiler connecting pipeline and guiding is mainly used for fixing boiler connecting pipelines.

The invention provides a dust removal mechanism for a sand box for lost foam casting, and relates to the technical field of dust removal equipment. The mechanism includes a base, a supporting column and a fixing frame, the supporting column is arranged on one side of the upper surface of the base, and a dedusting mechanism is arranged on one side of the supporting column; the fixing frame is arranged in the middle of the upper end of the base, and a first motor is installed on one side of the top end of the fixing frame; and the output end of the first motor passes through the top of the fixing frame to extend to the interior of the fixing frame and is fixedly connected to a screw rod, and a screw sleeve sleeves the screw rod, and the inner wall of one side, close to the screw rod, of thefixing frame is provided with a slide groove. The mechanism has a simple structure, the dedusting mechanism, a collection box, a dust collection pipe, a fan and a dust suction hood are arranged and used in a cooperation manner, so that the impact of dust on human health is reduced, and the processing accuracy of the sand box is improved; and when the mechanism is used, the fan is started to work,through the fan, dust and debris generated when cutting is performed on a worktable enter the dust collection pipe through the dust suction hood, and then the dust and debris enter the collection boxto complete dust collection to avoid polluting the environment.

The invention discloses a box cover lock for disassembling and assembling a server case without tools, and belongs to the technical field of server case disassembling and assembling devices. The box cover lock comprises a fixed shell, a Drag block, an operation panel, a Connecting plate and a positioning column; the upper end surface of the fixed shell is opened; the fixed shell is arranged on oneside, close to the case body, of the case cover; the open end of the fixed shell is connected with the box cover; an inner cavity of the fixed shell is communicated with an operation hole of the boxcover; a positioning column sliding hole is formed in a bottom plate of the fixed shell; the positioning column sliding hole is matched with the positioning column; the positioning column is connectedwith the case body; the dragging block is in sliding connection with the fixed shell; The dragging block is provided with a positioning hole matched with the positioning column, the operation plate is arranged above the dragging block, one end of the operation plate is hinged to one end of the dragging block, the connecting plate is arranged at the hinged end of the operation plate and the dragging block, one end of the connecting plate is hinged to the middle of the operation plate, and the end, away from the operation plate, of the connecting plate is hinged to the side wall of the fixing shell. Tool-free assembly and disassembly of the case body and the case cover are realized, so that the server case is convenient, quick and labor-saving to assemble and disassemble.

The invention relates to a pneumatic turnover device for a cylindrical automobile part. The pneumatic turnover device comprises a turnover bracket, a turnover component and a clamping mechanism, wherein a machining platform used for placing the cylindrical automobile part is arranged inside the turnover bracket; the turnover component is installed inside the turnover bracket; the turnover component comprises a pair of arc-shaped clamping turnover plates which are arranged in a manner of being opened in opposite directions; the two clamping turnover plates are driven to approach to or leave away from the machining platform by a lifting mechanism and are driven to be turned over by a turnover mechanism; and the clamping mechanism is used for driving the two clamping turnover plates to leaveaway from each other or approach to each other. The pneumatic turnover device provided by the invention has the advantages that the cylindrical automobile part is clamped by virtue of one pair of arc-shaped clamping turnover plates; the arc-shaped clamping turnover plates realize contact between faces of the part and increase the contact area; the clamping of the two clamping turnover plates is realized by cooperation of two double-rod driving cylinders, and the turnover of the part is realized by cooperation of the turnover mechanism, so the turnover acting force is increased, and the clamping is guaranteed in a turnover process of the clamping turnover plates.

The invention relates to a turbine flange butterfly valve. The turbine flange butterfly valve comprises a main fixing mechanism, a valve body and an auxiliary fixing mechanism, wherein the lower end of the main fixing mechanism is connected with existing ground in a sliding fit manner, the upper end of the main fixing mechanism is connected with the valve body, and the auxiliary fixing mechanism is arranged at the front end of the valve body. The turbine flange butterfly valve is installed by adopting multi-clamping design concept, the main fixing mechanism and the auxiliary fixing mechanism are arranged in a combined and separated manner so that the occupied time of the main fixing mechanism and the auxiliary fixing mechanism in the installation process of the single valve body can be shortened, the interval time between continuous installation of the valve body can be shortened, and therefore the overall working efficiency is improved; and meanwhile, the auxiliary fixing mechanism can adapt to the change of the size of a connecting structure, so that the overall clamping application range of the device is expanded.

The invention discloses a detachable handle and a cooking utensil, the detachable handle comprises a handle body, the handle body is provided with a detachable mechanism, the detachable mechanism comprises a connecting assembly and a driving assembly, and the connecting assembly comprises a connecting piece; the driving assembly comprises a connecting rod, a turntable and a transverse plate, one side of the connecting rod is eccentrically connected to the turntable, and the other side penetrates through a slender hole in the transverse plate; the rotating disc rotates to drive the connecting rod, the connecting rod moves in the long and thin hole in the transverse plate to drive the transverse plate to linearly move, and the other end of the transverse plate drives the connecting piece to move and stretch out and draw back for connecting or detaching the handle and the cooking utensil. When the handle is placed independently and does not need to be connected with cooking utensils such as a pot and a shovel, the connecting assembly does not stretch out, the occupied space of the handle is reduced, cleanliness is good, and the connecting assembly is protected against damage. When the handle needs to be connected with a cooking utensil for use, the driving assembly drives the connecting assembly to stretch out, and the handle is conveniently connected with the cooking utensil.

The invention discloses a comprehensive screening instrument for moisture density and weight distribution characteristics of cigarettes. The comprehensive screening instrument comprises a hopper (1), a microwave device (2), a weighing device (3), a sorting device (4) and a case (5) on the outer layer, wherein the hopper (1) is used for accommodating a cigarette sample to be analyzed; the microwave device (2) is positioned at the downstream of the hopper (1) and is used for measuring the moisture and density of the cigarettes; the weighing device (3) is positioned at the downstream of the microwave device (2) and is used for measuring the weight of the cigarette; and the sorting device (4) is positioned at the downstream of the weighing device (3) and is used for sorting the cigarettes with consistent moisture, density and weight together. According to the comprehensive screening instrument for the moisture density and weight distribution characteristics of the cigarettes, detection and screening processes of the cigarettes are not damaged. On the basis of the device, a lossless microwave method is adopted for measuring the moisture and density of the cigarettes, the weighing device (3) is provided with a balance scale and a buffer mechanism and is used for accurately weighing the cigarettes, the sorting device (4) is a drawer type multi-gear cigarette sorting device, and the whole instrument has advantages of being compact in structure, reliable and efficient in operation and the like.

The invention belongs to the technical field of express unloading, and particularly relates to unloading equipment for an express transport vehicle. The equipment comprises an unloading module, a height adjusting mechanism, a conveying belt and a winding mechanism. After a rear door of a carriage is opened, the front sides of two side baffles in the unloading module are close to the rear end of the carriage, so that two front baffles are attached to the end surface of the rear end of the carriage; then the two front baffles are driven to swing downwards, so that parcels, close to the carriagerear door, in the carriage slowly move downwards along with the two front baffles, and the phenomenon that the parcels fall off from a high position is avoided, and the parcels are protected. The twoside baffles are designed to play a role in guiding and limiting packages driven by the conveying belt to move, the parcels are prevented from sliding off from the two sides. Due to the fact that various truck carriages are different in height, in order to adapt to the carriages with different heights, the mounting height of the unloading module is manually adjusted through the height adjusting mechanism, it is guaranteed that the lower ends of the front sides of two side baffles in the unloading module are flush with the bottom faces of the carriages, and smooth unloading of parcels is guaranteed.

The invention provides a walking system for a multi-span greenhouse and an operation method. The walking system for the multi-span greenhouse comprises a spliced pavement and a chassis device, wherein the spliced pavement comprises a pavement body, and a first protection part and a second protection part which are formed by extending from two opposite side surfaces of the pavement body respectively; the first protection part comprises a first body and a first limiting part, the second protection part comprises a second body and a second limiting part, the free end of the first body is bent towards the second protection part to form the first limiting part, and the free end of the second body is bent towards the first protection part to form the second limiting part; the chassis device comprises a chassis and a walking mechanism. The walking mechanism is arranged at the bottom of the chassis; and the walking mechanism comprises at least one pair of safety wheel sets, each safety wheel set comprises two safety wheels which are symmetrically arranged about the central axis of the chassis, and under the condition that the chassis is located on the pavement body, the two safety wheels are in stopping contact with the first limiting part and the second limiting part correspondingly, so that the running safety of the chassis device is improved.

The invention discloses multi-truss wood truss assembling equipment. The multi-truss wood truss assembling equipment comprises a rack, a drilling mechanism, a feeding mechanism and a pressing pin grabbing mechanism, and the drilling mechanism, the feeding mechanism and the pressing pin grabbing mechanism are arranged on the rack; the rack comprises a longitudinal gantry moving mechanism, the longitudinal gantry moving mechanism comprises a pair of longitudinal guide rails, a portal frame and a longitudinal power mechanism, the portal frame comprises a cross beam and stand columns used for supporting the cross beam, and sliding bases matched with the longitudinal guide rails are arranged at the bottoms of the stand columns; and the feeding mechanism is arranged on the stand columns, and thedrilling mechanism and the pressing pin grabbing mechanism are connected with the cross beam through a transverse moving mechanism. The multi-truss wood truss assembling equipment can automatically move to corresponding machining positions according to the assembling requirements to achieve automatic drilling and pin assembling integration operation of a multi-truss wood truss, the error requirements in design and practical production are met, therefore, the assembling efficiency of the multi-truss wood truss is improved, the labor intensity is reduced, and the assembling quality of the multi-truss wood truss is improved.

The invention discloses a large livestock animal saliva sample acquisition and collection device comprising a chewing tube, cylindrical saliva collecting cotton, a rubber pull ring and a plurality of pull ropes; the chewing tube is provided with a saliva collection interlayer cavity, the outer wall of the chewing tube is provided with a plurality of saliva filtering holes communicated with the saliva collection interlayer cavity, and the bottom end of the chewing tube is provided with a saliva outlet communicated with the saliva collection interlayer cavity; the saliva outlet is sleeved with a saliva collecting pipe, a vertical fixing rod is fixed to the outer wall of the chewing pipe, and a handle is fixed to the lower end of the vertical fixing rod; the cylindrical saliva collecting cotton is fixedly sleeved on the top of the inner tube wall; the bottom of the saliva collecting cotton penetrates through the rubber pull ring, and the saliva collecting cotton and the rubber pull ring are in tight fit; and one end of each pull rope is fixed with the rubber pull ring, and the other end of each pull rope penetrates through the bottom end of the chewing tube and is fixed with a handle plate. The device does not need to fix an animal, does not damage the experimental animal, has low requirement on the skill level of experimenters, is simple and convenient to operate, and is relatively pure in collected saliva sample and small in influence on the experimental result.

The present invention relates to the technical field of automobile brake pad processing, in particular to an automatic heat treatment equipment for automobile brake pads, which includes a base, and also includes a material transfer mechanism, a material loading mechanism, a material unloading mechanism and a heat treatment mechanism installed on the base. The mechanism includes an oven, a material-holding rotary assembly and two heating pipes. The feeding mechanism includes a material guide assembly, and the unloading mechanism includes a discharge conveyor. One side of the material guide assembly is provided with a loading platform. The internal docking of the material component is set. The material shifting mechanism includes a horizontal moving component, which is horizontally located above the oven. Picking component, the grabbing component includes several jaws that can grab the workpiece, and the top of the oven is equipped with a pick-and-discharge port. This equipment can automatically load and unload materials, and can evenly heat-treat the brake pads, improving heat treatment efficiency and Reduce manpower.

The invention discloses a high-temperature-resistant detection device for a wave-absorbing composite material, which comprises a bottom plate, wherein a detection box body is fixed to the top of the bottom plate, a correlation antenna is arranged on the inner wall of the top of the detection box body, a rotating disc is rotationally installed in the center of the inner wall of the top of the bottom plate, a supporting plate is fixed to one side of the top of the rotating disc, a sample plate placement plate is fixed to the top end of the supporting plate, a heating mechanism is rotatably installed at the top end of the supporting plate, a bending plate is rotatably installed at the bottom end of the heating mechanism, a reset mechanism is rotatably installed between the bending plate and the heating mechanism, a telescopic mechanism is fixed to the supporting plate, the bottom end of the telescopic mechanism is rotatably connected with the bending plate, a heat conduction opening is formed in the top of the sample plate placement plate, a plurality of inclined heat conduction mechanisms distributed at equal intervals are fixed in the heat conduction opening, and the lengths of the heat conduction mechanisms are gradually increased from left to right. The heating mechanism can be adjusted, and heat in the heating process can be insulated and transferred.

The invention discloses a vibrating screen body structure, and relates to the technical field of vibrating screens, in particular to a vibrating screen body structure which comprises a base, supporting rods are installed on the two sides of the base, a driving motor is installed on one side of the upper portion of the base, and one end of the driving motor is connected with a pushing rotating rod; a first vibrating screen plate is mounted above the lifting screen body, and a first screen is mounted in the first vibrating screen plate; the connecting frame is connected to the side, close to the first vibrating screen plate, of the lifting screen body, the second vibrating screen plate is installed in the connecting frame, and a second screen is installed in the second vibrating screen plate. According to the screen body structure of the vibrating screen, mounting of the second vibrating screen plate can be facilitated through the mounting groove, and the extension plate and the positioning plate can be mutually stretched, so that the mounted second vibrating screen plate can be positioned, the second vibrating screen plate can be assembled and disassembled according to needs, and the vibrating screen can achieve dual effects.

The invention relates to a beam pumping unit with composite balance for oil drilling, which includes an operating table, a beam strut and a balance connecting plate, the bottom of the operating table is fixed with a support base plate, and the top of the operating table is fixed by screws A triangular bracket is connected, a connecting platform is arranged on the top of the triangular bracket, and a fastening shell is connected to the top of the connecting platform, the beam strut is arranged inside the connecting platform, and a hydraulic rod is arranged at the right end of the connecting platform , the right end of the beam strut is connected with a donkey head main body, and a rope hanger is installed at the bottom end of the donkey head main body. The beneficial effects of the present invention are: the oil drill adopts a compound balanced beam pumping unit through the movable setting of the balance connecting plate, when the balance connecting plate is set at the left end of the beam strut, it is set on the floating beam combined with the main body of the donkey head. The right end of the beam strut, according to the characteristics of the lever principle, the beam strut works in an environment of left and right compound balance to ensure the overall balance of the device.

The invention discloses an automatic assembling and disassembling device for reaction tubes. The device comprises a mounting plate, wherein the mounting plate is provided with a turntable, the turntable is provided with a plurality of containing grooves, and the upper ends of the containing grooves are provided with internal threads; a rubber plug assembling and disassembling mechanism used for automatically assembling or disassembling rubber plugs at the open ends of the reaction tubes; a pressing cap assembling and disassembling mechanism used for automatically assembling or disassembling pressing caps at the upper ends of the reaction tubes and outside the rubber plugs; a thread cap assembling and disassembling mechanism used for automatically assembling or disassembling thread caps atthe upper ends of the containing grooves; and a turntable driving mechanism used for driving the containing grooves in the turntable to sequentially rotate to a rubber plug assembling and disassembling station, a pressing cap assembling and disassembling station and a thread cap assembling and disassembling station. According to the automatic assembling and disassembling device for the reaction tubes, automatic assembling and disassembling of the reaction tubes and the turntable can be achieved, in other words, manual operation is not needed in the assembling and disassembling process, and theworking efficiency is high.

The invention discloses an intelligent card sleeve with an anti-demagnetization structure, wherein the intelligent card sleeve comprises an anti-demagnetization card sleeve body, card slots and a hanging rope; a protective film is arranged at the front end of the anti-demagnetization card sleeve body, the card slots are formed in the front side and the rear side of the interior of the anti-demagnetization card sleeve body, and fixed sliding grooves are formed in the left side and the right side of each card slot; the fixed sliding grooves are symmetrically distributed about the vertical centerline of the anti-demagnetization card sleeve body, and the sliding blocks and the fixed sliding grooves form an elastic structure through return springs. According to the intelligent card sleeve withthe anti-demagnetization structure, a linkage rod can be driven to move by moving a movable poking piece, so that a card can be driven to move out of the card slots, the movement of the movable poking piece is guided and limited through a guide slot, and the problem that an existing intelligent card sleeve with the anti-demagnetization structure is difficult to meet the use requirements of different types of IC cards, for example, a contact type card such as a bank card is placed in the card sleeve and is inconvenient to take and place in use, is solved.