56results about How to "Realize automatic limit" patented technology

The invention discloses a steel structure component convenient to disassemble and assemble, and belongs to the field of steel structures. The steel structural component comprises a support column anda plurality of sets of beams. A plurality of sets of clamping grooves corresponding to the beams are formed in the support column. Positioning assemblies are arranged between the support column and the beams. Clamping blocks matched with the clamping grooves are arranged on the beams. Limiting assemblies are arranged on the clamping blocks. Mounting holes are formed in the support column. The mounting holes are communicated with the clamping grooves. Releasing assemblies are arranged in the mounting holes. According to the steel structure component convenient to disassemble and assemble, by arranging the limiting assemblies on the clamping blocks, the clamping blocks can be inserted into the clamping grooves, and automatic limiting of the clamping blocks is achieved, so that the beams canbe conveniently and fixedly mounted on the support column. In addition, the releasing assemblies are arranged in the mounting holes, and the limiting of the clamping blocks can be released by the releasing assemblies, so that the clamping blocks can be conveniently pulled out from the clamping grooves, and the disassembly operation of the beams is achieved.

The invention belongs to anchor rod support equipment, and particularly relates to an anchor drilling jig provided with a rod-protection mechanical hand and used for a coal mine. A sliding frame assembly is mounted on a frame assembly. A long feeding oil cylinder is mounted at the bottom of the frame assembly. A cylinder barrel lug base of the long feeding oil cylinder is connected with a long feeding oil cylinder fixing lug base of the frame assembly. A cylinder rod lug base of the long feeding oil cylinder is connected with a top plate of the sliding frame assembly. A guide connecting platewhich can slide relatively is mounted on the sliding frame assembly and is fixedly connected with a drilling box. A top rod back-hooking device which can turn a mechanical paw is fixed to one side ofthe drilling box. A mechanical hand protection arm and the mechanical paw are connected to the frame assembly. One end of a chain transmission device is connected with the guide connecting plate, andthe other end of the chain transmission device is connected with the sliding frame assembly. The chain transmission device is wound on a short feeding oil cylinder through a sliding wheel assembly, and the guide connecting plate is improved by multiple times through a sliding wheel device composed of a short feeding oil cylinder stretching chain drive device and the guide connecting plate.

The invention discloses a limiting device of a tobacco shred body to be supplied. The limiting device comprises two preset positions arranged at the tobacco shred body to be supplied, a first limitingblock, a second limiting block and limiting pins, wherein the first limiting block and the second limiting block limit a working position and an overhaul position of the tobacco shred body to be supplied respectively; limiting pin holes are formed in the first limiting block and the second limiting block; the limiting pins are selectably matched with the limiting pin holes of the first limiting block and the second limiting block for limiting; and the limiting pins are connected with a driving device and driven by the driving device to be capable of being clamped into and separated from the limiting pin holes. According to the limiting device, the limiting pins are driven by the driving device to be clamped into or separated from the limiting pin holes, so that the limiting pins are matched with the first limiting block and the second limiting block for limiting or separated from the first limiting block and the second limiting block; manual pulling of the limiting pins are avoided; the limiting device achieves automatic limiting of the tobacco shred body to be supplied; the limiting of the tobacco shred body to be supplies is simple and convenient to operate and saves time and labor; and the production efficiency is improved. The invention further discloses a cigarette making and plug assembling machine comprising the limiting device.

The invention relates to the technical field of door stoppers, in particular to an opened door self-locking type door stopper which comprises a support and a rotating shaft penetrating through the support. The rotating shaft and the support are rotationally connected, a stop lever used for limiting a door page is fixed to the outer end of the rotating shaft, a balancing weight is fixed to the inner end of the rotating shaft, the stop lever and the balancing weight are located on the two sides of the rotating shaft correspondingly, the weight of the balancing weight is larger than that of the stop lever, a push ring is convexly arranged at the end, close to the stop lever, of the rotating shaft, the push ring is located between the stop lever and the balancing weight, a positioning pin extends outwards from the side, close to the support, of the balancing weight, and the support is provided with a pin hole matched with the positioning pin. Ingeniously, when opened to the position wherethe rotating shaft is located, the door page will drive the rotating shaft to produce axial displacement, therefore, the positioning pin on the balancing weight is disengaged from the pin hole in thesupport, the balancing weight will drive the rotating shaft to rotate under the self gravity effect, and finally the stop lever is automatically limited on the outer side of the door page. The openeddoor self-locking type door stopper is simple in structure, low in cost and high in reliability.

The invention discloses a waterway control device and a hand-held water outlet device. The waterway control device comprises an installation part and a control mechanism, wherein the control mechanism comprises a control disc and a driving mechanism, and the installation part is provided with an inlet waterway; the control disc is provided with a rotating wall, the rotating axis of the control disc and the axis of the rotating wall coincide, the rotating wall is provided with a radial through water passing channel, and the control disc rotates to control the water passing channel to correspond to the inlet waterway in order to at least control the inlet waterway to be in a water passing state or the water passing channel and the inlet waterway are completely staggered in order to control the inlet waterway to be in a disconnected state; and a plurality of matching grooves arranged in an annular array are concavely arranged in outer rotating surface of the rotating wall, the control mechanism further comprises a limiting mechanism, the limiting mechanism comprises a positioning pin and an elastic component, the positioning pin is connected to the installation part in a sliding mode, the sliding direction of the positioning pin is arranged in the radial direction of the rotating wall, and the elastic component abuts against the positioning pin, so that the head end of the positioning pin can be inserted into the matching groove. The waterway control device and the hand-held water outlet device have the advantages of being good in sealing performance, convenient to control and high in adjusting precision.

The invention relates to the field of electric vehicles, in particular to an electric tricycle for transportation; it includes a car body, a carriage and a motor; the top of the car body is fixedly connected with a carriage; The inside of the block is fixedly connected with a motor; the output shaft of the motor is fixedly connected with a first bevel gear; the surface of the connecting block is connected with a screw rod for rotation; the surface of the screw rod near the top of the screw rod is fixedly connected with a first Two bevel gears; the surface of the nut of the screw mandrel is fixedly connected with a connecting rod; the surface of the connecting rod near the bottom of the connecting rod is rotatably connected with a pressure plate; through the present invention, the tail of the electric tricycle is increased with an automatic lifting function part , which is convenient for workers to load and unload goods and passengers to ride, reducing the work intensity of staff loading and unloading goods. At the same time, for special people, the pressure plate can be directly up and down automatically, without more auxiliary personnel, which is convenient for special personnel. Travel short distances quickly.

The invention discloses hollow glass with a built-in sun-shading curtain. The hollow glass comprises two glass media, the sun-shading curtain between the two glass media and a traction mechanism for controlling the sun-shading curtain, as well as a traction device fixed on the traction mechanism; an operation device is arranged outside the hollow glass and is opposite to the traction device; at least one of the operation device and the traction device contains magnetic material, and the operation device and the traction device are in magnetic connection; and at least one of the operation device and the traction device is provided with a first support structure, a first rotating shaft is fixed on the first support structure, a rolling wheel with a resistance position is mounted on the first rotating shaft, and at least two positions where the rolling wheel which are in contact with the hollow glass are nearest to the first rotating shaft in one rotation cycle of the rolling wheel. As the rolling wheel with the resistance position is selected, when the sun-shading curtain stops the motion, the sun-shading curtain is not only under the action of the friction force of the contact surface, but also is regulated by the component force of magnetic force in the horizontal direction, and the hollow glass further has the automatic position-limiting function, the operation difficulty is reduced and the operation hand feeling is improved.

The invention belongs to the field of life, and particularly relates to an automatic anti-skid tray and a use method thereof. The anti-skid tray comprises a tray body; the tray body is internally provided with a liquid storage cavity; the liquid storage cavity is filled with gasification liquid with the low boiling point; the upper end of the tray body is fixedly connected with a heat conduction sheet; the lower end of the heat conduction sheet is fixedly connected with a plurality of heat conduction rods; the lower ends of the heat conduction rods extend into the liquid storage cavity; an annular cavity communicating with the liquid storage cavity is formed in the tray body; an annular opening communicating with the annular cavity is formed in the side wall of the liquid storage cavity; an air bag is fixedly connected in the annular opening; a plurality of annular plates are arranged on the upper side of the air bag; and the diameters of the multiple annular plates are sequentially increased from inside to outside. The temperature of a utensil is utilized for heating the gasification liquid with the low boiling point, the gasification liquid is vaporized and fills up the air bag,a limiting rod is jacked by the air bag, and the utensil is limited, so that the utensil is prevented from sliding on the surface of the tray and the situation that soup in the utensil overflows or the utensil falls to the ground is greatly reduced.

The invention relates to a limiting device and a mooring system. The limiting device comprises a plug and a socket, wherein the plug comprises a driver and a limiting assembly, and the limiting assembly is connected with the output end of the driver; the socket comprises a cover plate, wherein the cover plate is provided with a limiting hole; the driver is used for driving the limiting assembly tobe inserted into the limiting hole; and the limiting assembly is engaged with the limiting hole so as to realize the automatic limit of an electric boat.