59results about How to "Not easy to fly out" patented technology

The invention relates to a demonstration device for mathematics education, in particular to a device for probability calculation for mathematics education. The objective of the invention is to provide the demonstration device which achieves vivid demonstration, allows students to easily understand the probability and capable of improving working efficiency. In order to solve the technical problem, the demonstration device comprises a base plate, a support and the like. The support and a collection frame are installed on the top of the base plate in a bolted connection manner. The support is arranged on the left side of the collection frame. A top plate is arranged on the top of the right side face of the support in the horizontal plane in a bolted connection manner. A guidance device is arranged on the left side of the bottom of the top. According to the invention, the first motor is used for achieving driving, so a placing box is rotated so as to uniformly mix small balls in different colors, or by swinging a swing rod, the small balls in the different colors are mixed uniformly; the demonstration device is simple in operation and convenient to use; and effects of achieving vivid demonstration, allowing the students to easily understand the probability and improving working efficiency are achieved.

The invention relates to a blast furnace roof material distributing device which is characterized by comprising a top cover, a shell, a center throat pipe, a left suspension shaft, a right suspension shaft, a left movable arm, a right movable arm, a chute, a rotating mechanism and a tilting mechanism, wherein the shell is fixedly connected with a steel ring of a furnace roof, and the top cover is fixedly connected with the shell; an output opening at the lower end of the center throat pipe is arranged above an input opening at the upper end part of the chute; the left end at the upper part of the chute is clamped on the left movable arm, and the right end at the upper part of the chute is clamped on the right movable arm; the left movable arm is fixedly connected with the left suspension shaft by a spline, and the right movable arm is fixedly connected with the right suspension shaft by a spline; the left suspension shaft and the right suspension shaft are respectively connected with a rotating cylinder of the rotating mechanism by bearings; the left suspension shaft is fixedly connected with a left crank of the tilting mechanism, and the right suspension shaft is fixedly connected with a right crank of the tilting mechanism. The invention has the characteristics of simple mechanical drive principle, flexible material distribution, high running precision, reliable operation, convenient use and maintenance and long service life.

The invention discloses a cutting tool having a fly-off prevention structure. The cutting tool having a tool body, a blade and a tool holder, the blade is installed on the tool holder, the tool body is provided with a tool slot, the tool holder is installed in the tool slot through a tool holder fastener, the front end of the tool slot is provided with a tool slot top surface along the cutting rotation direction of the cutting tool, one side of the blade facing the tool slot top surface is provided with a compaction inclined surface, a wedge is wedged between the tool slot top surface and the compaction inclined surface, and the wedge is connected with the tool slot through a wedge fastener. The cutting tool has the advantages of simple and compact structure, convenient processing and making, low production cost, convenient blade installing and dismounting, and good fly-off prevention effect.

The invention relates to a polishing device, in particular to a circular pipe polishing device for heating and ventilation. According to the technical scheme, the circular pipe polishing device for heating and ventilation can be used for polishing multiple circular pipes, lightens the working burden of workers, and improves the polishing efficiency. The circular pipe polishing device for heating and ventilation comprises a base plate, a driving mechanism, a supporting seat, a first mounting plate, rotating mechanisms, a sliding rail, a sliding block, a lifting plate, a transmission mechanism,a polishing mechanism, a lifting mechanism and a second mounting plate. The second mounting plate is fixedly connected to the top of the base plate through the supporting seat, and the driving mechanism is fixedly connected to one side of the base plate. The multiple rotating mechanisms are fixedly connected to the first mounting plate at equal intervals. The circular pipe polishing device for heating and ventilation has the beneficial effects of comprehensively and quickly polishing the multiple circular pipes, improving the polishing efficiency, and lightening the working burden of the workers.

The invention belongs to the technical field of drilling equipment, and particularly relates to a rapid drilling clamp for a round pipe, which comprises a bottom plate, a support block, a first roller, a first rotating shaft, a first motor, a positioning mechanism and a length fixing mechanism; a drilling mechanism moves downwards, a first spring is compressed, elastic force generated by the firstspring enables a positioning block to press the round pipe, a V-shaped groove automatically guides the round pipe, automatic positioning and clamping of the round pipe are achieved, and the positioning and clamping time is shortened; the drilling mechanism continues to move downwards for drilling; the drilling mechanism moves upwards to drive the upper end of the first spring to move upwards, when the tension of the first spring is larger than the gravity of the positioning block and a sliding block, the positioning block moves upwards, automatic loosening of the round pipe is achieved, and the loosening time is shortened; and after the round pipe is loosened, the first motor drives a second chain wheel to rotate, drives a first chain wheel to rotate and drives the first roller to rotate,so that the round pipe moves to the position determined by the length fixing mechanism, the drilling mechanism conducts drilling again, circulating drilling is achieved, and time is saved.

The invention relates to the technical field of mechanical processing, and discloses a polishing device for processing an electrically operated tricycle. The polishing device comprises a sleeve pipe,a rectangular opening is formed in the right side of the sleeve pipe, a storing plate is transversely arranged in the rectangular opening, the two opposite sides of the storing plate are respectivelyand rotataly connected with the two opposite sides of the rectangular opening through a shaft pin, a T-shaped sliding groove is formed in the lower side of the storing plate, an adjusting mechanism isarranged in the T-shaped sliding groove, a strip-shaped groove is formed in the right side of the sleeve pipe, a protecting mechanism is arranged in the strip-shaped groove, a motor is fixedly connected with the left side of the sleeve pipe, a worm rod is fixedly connected with the output end of the motor, one end of the worm rod penetrates through the side wall of the sleeve pipe and is fixedlyconnected with a sand wheel sheet, an annular block is fixedly connected within the sleeve pipe transversely, and a filtering mechanism is connected with the upper side of the annular block. The polishing device for processing the electrically operated tricycle has the advantages that the polishing safety can be improved, the health of the workers is not prone to being damaged, the dust is not prone to producing, and the debris after polishing can be further recovered.

The invention discloses a mosquito-skilling screen window with a cleaning function. A buckling groove which is matched with a buckling rubber strip is formed in one side of a frame body in the circumferential direction of the frame body. A window screen is clamped in the buckling groove of the frame body through the buckling rubber strip. The frame body comprises two symmetrical horizontal frames and two symmetrical vertical frames. A lamp groove is formed in the side, opposite to the buckling groove, of one vertical frame, an opening of the lamp groove is covered with a vibrating screen which is used for electrically shocking mosquitoes and electrically connected with the lamp groove, and a mosquito-lured lamp is mounted in the lamp groove. A plurality of electric fans are mounted in the lamp groove in the length direction of the lamp groove, and the electric fans blow air towards the opening of the lamp groove. One side of a mosquito-skilling box is fixedly connected to the outer side, close to the lamp groove, of the corresponding vertical frame, and the mosquito-skilling box communicates with the lamp groove. A net allowing mosquitoes to fly therein is arranged on the side, facing the window screen, of the mosquito-skilling box. The mosquito-skilling screen window with the cleaning function can effectively kill mosquitoes and completely removing mosquito corpses.

A balanced optical component of detachable type is prepared as setting motor at one side of color wheel and coverage plate at another side of color wheel, setting a force exerting region on one surface of coverage plate as said surface being set opposite to color wheel.

The invention discloses a bending strength detection device for new material production, the bending strength detection device comprises a support mechanism and a control panel, the support mechanismis mainly composed of a working plate and a frame, the bending strength detection device also comprises a discharge mechanism, an extrusion mechanism and a measurement mechanism, the top of the support mechanism is provided with three chutes, and the three chutes are equidistantly arranged front and back; a discharging mechanism is arranged on the inner side of each sliding groove and comprises atwo-way air cylinder, a sliding block, a supporting base and a discharging assembly, and the two-way air cylinders are connected to the centers of the inner sides of the sliding grooves through bolts.Through the arrangement of the discharging mechanism, the extrusion mechanism and the measurement mechanism, the detection function of three materials can be completed at a time, and the detection efficiency is improved; and through the arrangement of the discharging assembly, the safety of the whole equipment in the working process is improved.

The application relates to a sorting and discharging apparatus and a sorting and discharging method of a testing and sorting machine for an MOS transistor. The apparatus comprises a sorting frame, wherein the sorting frame is fixedly connected with at least two guide rails; the sorting frame is provided with a sorting assembly which is used for guiding a material to the corresponding guide rail according to data transmitted by a detection device; a first material plate and a second material plate are fixedly connected onto the sorting frame; a storage space is formed between the first materialplate and the second material plate; feeding holes are formed in the first material plate; the feeding holes are communicated with the guide rails; the feeding holes are corresponding to ends of receiving boxes and are further close to the bottom of the sorting frame; discharge holes are formed in the second material plate; the discharge holes are far away from the bottom of the sorting frame; afeeding assembly is arranged on the sorting frame; the position of the first material plate is higher than that of the second material plate; a positioning assembly is arranged on the first material plate; and after the feeding assembly drives the receiving box to reach the storage space, the receiving box at an original position is jacked up by a newly reaching receiving box. The sorting and discharging apparatus has the effect of improving output efficiency.

The invention provides a deviation adjusting device of a pumping unit, and belongs to the technical field of oil field development. The deviation adjusting device comprises a first bottom plate, a positioning bolt, a nut, a stressed back plate, a supporting plate and a centralizing ring, wherein a first through hole is formed in the first bottom plate, the positioning bolt penetrates through the first through hole from the bottom of the first bottom plate and is connected with the nut located above the first bottom plate, the stress back plate and the supporting plate are arranged above the first bottom plate and are perpendicular to the first bottom plate, a second through hole is formed in the supporting plate, the centralizing ring comprises a circular ring and a first column body, thecircular ring is connected with one end of the first column body, and the first column body penetrates through the second through hole and is movably connected with the second through hole. By the adoption of the deviation adjusting device, when the pumping unit is subjected to deviation adjustment, the stress direction of the jack is ensured to be perpendicular to the side surface of the oil pumping unit base in contact with the jack, so that the jack is not easy to fly out, and the safety risk is reduced.

The invention discloses a cork presser used for a cork. The cork presser comprises a cork pressing barrel and a cork pressing rod, wherein the cork pressing barrel comprises a supporting housing; the supporting housing comprises a supporting barrel, a cork placing opening and a connecting barrel; the cork placing opening is formed above the supporting barrel; the connecting barrel is arranged above the cork placing opening; and the cork pressing rod is in sliding connection with the connecting barrel. The cork presser used for the corker disclosed by the invention has the advantages that: the cork presser is provided with the supporting barrel and an extruding barrel, which are movably connected, is wider in scope of application, safe to use due to the fact that a bottle stopper does not fly out easily during cork pressing, and is relatively labor-saving to use because of a lever labor-saving structure.

The invention discloses a municipal old road milling device, and relates to the field of pavement maintenance, the old municipal road milling device comprises a treatment box, the top of the treatment box is provided with a driving assembly, the inner walls of the two sides of the treatment box are rotatably provided with rotary drums, and the two sides of the outer side walls of the rotary drums are fixedly provided with a plurality of support connecting plates which are distributed at equal intervals. Through the arrangement of the driving assembly, the transmission assembly, the rotary drum, the crushing rollers and the milling wheels, the driving assembly provides power to enable the rotary drum to rotate, the rotary drum rotates rapidly, and the milling wheels and the crushing rollers which are distributed on a supporting connecting plate and a supporting mounting plate at equal intervals are made to rotate through the transmission assembly; the transmission assembly enables the rotating speed of the crushing roller to be higher than that of the milling wheel and the rotating directions of the crushing roller and the milling wheel to be opposite, the milling wheel mills a road surface, particles are generated and thrown between the crushing roller and the rotary drum to be crushed, the rotating speed of the crushing roller is higher than that of the milling wheel, so that the situation of material blockage is avoided, and cement crushed into particles is thrown to the rear part by the whole rotary drum.

The invention discloses automatic grooving equipment for water and electricity installation. The automatic grooving equipment for water and electricity installation comprises a grooving machine main body, a protection mechanism, an adjusting mechanism and a synchronous mechanism, wherein the end part of the grooving machine main body is provided with a grooving cutter for grooving a wall surface, and the protection cover part of the grooving machine main body is provided with a water pipe for supplying water; the protection mechanism is installed on the outer side of a protection cover of the grooving machine main body, so that the protection mechanism can be automatically opened when the protection mechanism passes through the wall surface of the internal corner of a wall for grooving; the adjusting mechanism is installed in a installation groove of the grooving machine main body, so that the grooving machine main body can rotate the adjusting mechanism corresponding to different groove depths before grooving; the synchronous mechanism is installed on one side of the protection mechanism and is separated from or in butt joint with the adjusting mechanism through rotation of the protection mechanism. According to the automatic grooving equipment for water and electricity installation, the protection mechanism can automatically open the protection cover when the grooving cutter passes through the internal corner, so that opening and closing of the protection cover can be achieved without shutdown, and the working time is saved; mud is always located in the protection cover, and the mud is not easy to splash out, so that the implementation of a user is not hindered, and the safety is higher.

The invention provides a polishing device for PVC door skin of a paint-free door. The polishing device for the PVC door skin of the paint-free door comprises a base, a machine body, a control switch,openings, a dust collector, guide rails, bayonets, a connection base, a spring, a connection rod, an upper polishing board, connection blocks, protrusions, guide wheels, dust collecting openings, an upper polishing motor, a lower polishing motor, polishing discs, a conveying motor, idler wheels and conveying belts; the machine body is fixedly installed on the base; the control switch is fixedly installed on the front surface of the machine body; the openings are formed in the left end and the right end of the machine body; the dust collector is fixedly installed on the top of the machine body;the guide rails are fixedly installed at the left end and the right end of the inner wall of the machine body; and the bayonets are formed in the left ends and the right ends of the guide rails. A paint-free door plate can be fixed in the polishing process, the upper end and the lower end of the paint-free door plate can be polished at the same time, the polishing effect is better, dust generatedduring working can be collected by the device, the device is sanitary and environmentally friendly, and practicability of the device is enhanced.

The invention relates to a rock-soil body catastrophe simulation detection device and detection method and belongs to the technical field of rock-soil detection simulation tests. The device comprisesa simulation sandbox box filled with rock and soil piles, the interior of the simulation sandbox box is hollow; an air blowing fan is arranged on the inner side wall of the simulation sandbox box; anexhaust hole is formed in the side wall, opposite to the air blowing fan, in the simulation sandbox box; a sand blocking piece is arranged on the outer wall, right opposite to the exhaust hole, of thesimulation sandbox box; the sand blocking piece is used for normally discharging air out of the simulation sandbox box to prevent flying sand from flying out of the simulation sandbox; and a placingplate for placing a rock-soil pile is arranged on the bottom wall of the simulation sandbox box, and a driving assembly for driving the placing plate to shake on the horizontal plane is arranged in the simulation sandbox box. The invention has the advantage that the geological influence of fierce wind and earthquakes on a rock-soil body in extreme weather can be simulated conveniently.

The invention discloses a bar code paper recovery box of a public storage cabinet, which is characterized by comprising a box body fixed on the storage cabinet, wherein the box body is in an enclosed structure consisting of a bottom plate, a side surrounding body and an upper cover; a rectangular opening is formed in the upper surface of the upper cover and allows bar code paper to pass through; a flange and a barrier strip for placing the bottom plate are arranged at the bottom end of the side surrounding body; and the bottom plate is limited by the barrier strip on the flange to move in a horizontal direction. The box is simple in structure and lower in cost; when the box is in use, the bar code paper does not fly out easily; the box has a good storage effect; the box body is convenient to clean and treat; and the box is convenient to popularize and apply.

The invention discloses an indoor aphid and aphid wasp multiplication device, which comprises a bracket, on which a grid is arranged so that the grid passes through the bracket to form a closed area, and an opening is arranged on the top of the area, and A bee collecting bag is arranged at the opening position, and a collecting bag with telescopic function is arranged on the grid. The present invention adopts a structural frame composed of brackets and grids, and rationally arranges it so that it can be used as a proliferation facility for aphids and aphids, and can effectively avoid death caused by aphids crowding gaps and disability caused by sharp corners. The phenomenon occurs, and at the same time avoids mixing with other insects. The design of the double zipper opening is not only convenient for watering, fertilizing, and changing plants during the multiplication process, but also effectively prevents winged aphids or aphids from flying out. The design of the upper collection bag is conducive to collecting the top aphids and can Make it difficult for aphids to fly out.

The invention discloses a lightweight fastening type opening mesh separator, which has a circular fixing disc, wherein the top surface and the bottom surface of the circular fixing disc is respectively provided with an upper pressing cover and a lower pressing cover, the outer edge of the circular fixing disc is provided with a circle of a plurality of axial through holes, each two through holes form a group, U-shaped metal rods are respectively inserted in each group of the through holes, both ends of the U-shaped metal rod are simultaneously inserted from one ends of one group of the throughholes to achieve the bottom, and are bent and folded to attach to the disc surface of the circular fixing disc so as to form radial mesh arrangement, the upper pressing cover and the lower pressing cover are integrally connected to the circular fixing disc by screws, and the upper pressing cover or the lower pressing cover presses and fixes the U-shaped metal rods. According to the present invention, the lightweight fastening type opening mesh separator has advantages of simple structure, light weight, molded batch production, reduced production cost, energy saving and environmental protection, wherein various components can be replaced, recovered and reused.