71results about How to "Change the size of the space" patented technology

A teaching question board comprises a first teaching question board; a cavity penetrating through the left and the right is formed inside the first teaching question board; two sliding rails are correspondingly arranged at each of the top and the bottom of the inner cavity of the first teaching question board; a first board frame and a second board frame are movably connected onto the sliding rails; corresponding positions of the tops and the bottoms of the first board frame and the second board frame are connected with pressing blocks through springs; handles are arranged on opposite frame edges of the first board frame and the second board frame; a plurality of clamping holes are formed in corresponding positions of the tops and the bottoms of the sliding rails; a second teaching question board and a third teaching question board are respectively and fixedly connected with one side of the inner wall of the first board frame and one side of the inner wall of the second board frame; a cardan joint is connected with the bottom of the first teaching question board; a telescopic rod is connected with the bottom of the cardan joint; a movable rotating shaft is arranged at the top of the telescopic rod and is fixedly connected with the center of the bottom of the cardan joint; and a thread is arranged below the cardan joint. With the board, the teaching area can be increased according to the actual requirements, and the problem that the area of a question board is insufficient for senior high school students due to the relatively large question quantity is solved.

The invention provides a pneumatic automatic return device. The problem that in the prior art, the return speeds of doors with different weights are different is solved. The pneumatic automatic return device comprises a shell, an upper convex shaft, a lower convex shaft, a piston, a sealed air chamber and an adjusting device, wherein the shell is of a hollow structure, the upper convex shaft is arranged in a gear sleeve, one end of the upper convex shaft extends outwards from the end part of the gear sleeve, the upper convex shaft only rotates in the gear sleeve, the lower convex shaft is also arranged in the gear sleeve and does reciprocating rectilinear motion only in the length direction of the gear sleeve, the upper convex shaft is in contact with the lower convex shaft, acting force always exists between the upper convex shaft and the lower convex shaft, the rotating motion of the upper convex shaft is synchronous with the rectilinear motion of the lower convex shaft, one end of the piston is used for continuously propping the lower convex shaft against the upper convex shaft, the sealed air chamber is a sealed cavity formed by an upper sealing piece and a lower sealing piece in the shell, high-pressure air is arranged in the sealed cavity, the other end of the piston extends into the sealed cavity, and the adjusting device is used for adjusting the volume of the sealing cavity.

The invention provides an indoor space adjusting wall based on 3D module splicing.The indoor space adjusting wall comprises nine sub wall bodies shaped like a rectangle, the left end faces and the right end faces of the nine sub wall bodies are connected through fixing cavities and connecting columns, the left side end faces and the right side end faces of three of the sub wall bodies are provided with the connecting columns and the fixing cavities, and only one of the left side face and the right side face of each sub wall body in the other six sub wall bodies is provided with the connecting column and the fixing cavity; the upper end faces and the lower end faces of the nine sub wall bodies are connected through hinges, the hinges are fixed to the sub wall bodies through bolts, and the upper end faces of the three uppermost sub wall bodies in the nine sub wall bodies are provided with suction cups.The wall is formed by splicing the sub wall bodies, can be assembled and used at any time and is simple and convenient to use, the sub wall bodies are connected through the hinges, and free folding can be achieved.

The invention discloses a dough splitting device, which includes a feeding device, a base, a conveying device and a dough splitting mechanism; the feeding device is installed on the base; the dough splitting mechanism is rotationally connected with the feeding device; the conveying device is arranged below the dough splitting mechanism; the dough splitting mechanism includes a dough splitting cylinder rotating along the axis of the dough splitting mechanism, movable columns and cylindrical through-holes; the cylindrical through-holes are arranged side by side in the curved surface of the doughsplitting cylinder; the movable columns are inserted in one ports of the cylindrical through-holes; and when the cylindrical through-holes are aligned with the feeding opening of the feeding device,dough is fed into the cylindrical through-holes from the feeding device, the movable columns are extruded outwards from the cylindrical through-holes, and when the cylindrical through-holes directly face the conveying device, under the action of gravity, the movable columns press the dough in the cylindrical through-holes to the conveying device. The invention has the advantages of equal weight ofsplitted dough, low equipment cost and wide application range.

The invention provides an indoor lifting wall spliced based on a 3D module. The indoor lifting wall comprises sub-walls. The nine sub-walls are arranged and are arranged to be rectangular. The left end faces and the right end faces of the nine sub-walls are connected through fixing cavities and connecting columns. Connecting columns and fixing cavities are formed in the left side end faces and the right side end faces of the three of the nine sub-walls. Only one side face of the left side and the right side of each of the other six sub-walls is provided with a connecting column and a fixing cavity. Locking plates are arranged on the upper end faces and the lower end faces in the fixing cavities. The locking plates and the upper end faces and the lower end faces of the fixing cavities are connected through springs. The upper end faces and the lower end faces of the nine sub-walls are connected through hinges. The hinges and the sub-walls are fixed through bolts. Suction cups are arranged on the upper end faces of the three sub-walls, located at the uppermost portion, of the nine sub-walls. Permanent magnets are embedded in the front end faces and the rear end faces of the three sub-walls, located at the bottommost portion, of the nine sub-walls. Iron pieces are embedded in the front end faces and the rear end faces of the rest of the six sub-walls.

The invention relates to the technical field of ground car receiving devices for all supporting vehicles, in particular to a moving device for a car parking space. The mobile device comprises guide rails and support units; each support unit comprises a support slidably connected with the guide rails, and the top of each support is provided with a horizontal supporting plate; two sides of each support are provided with supporting blocks slidably connected with the guide rails, and hydraulic cylinders are connected between the support and the supporting blocks; adjusting plates are arranged between the supporting blocks and the supporting plates, each adjusting plate comprises multiple supporting strips with rectangular cross sections, the supporting strips are arranged side by side, the bottoms of adjacent supporting strips are connected in a pinned mode, and axes of revolution of pin connection are perpendicular to the axial direction of the guide rail; the adjusting plates are fixedlyconnected with the supporting plates, and the bottoms of the adjusting plates are arranged on the supporting blocks and are slidably matched with the supporting blocks; and pressure transducers are arranged between the supporting plates and the support, and the pressure transducers are electrically connected with the two hydraulic cylinders. The mobile device for the car parking spaces solves theproblem of reduction of the utilization rate of parking lots due to changeless width of parking spaces in the prior art.

The invention discloses a rubber hose storage rack which comprises a rack body. A feeding port is formed in one side of the rack body, a fixing device for fixing a rubber hose is arranged on one side of the rack body, the fixing device comprises a first driving motor, and the rack body is fixedly connected with a first fixing plate and a second fixing plate. The first driving motor is fixedly connected with the first fixing plate, and an output shaft of the first driving motor is in transmission connection with a transmission screw rotationally connected with the first fixing plate and the second fixing plate both. According to the invention, under the driving of the first driving motor, the transmission screw rod is made to rotate, a first sliding block, a third fixing plate and an electric telescopic rod are made to move in the horizontal direction according to the thread transmission principle, then the electric telescopic rod is driven, the position of a push block in the vertical direction is adjusted, and therefore the first fixing rods at different positions are pushed to slide towards the interior of the rack body.

The invention provides a building-engineering elevator carrying mechanism with the adjustable space size. The elevator carrying mechanism comprises lateral bottom plates, a base, a main extensible plate, triangular grooves, side plate connecting holes, extensible plate holes, hook holes, bottom plate rubber layers, a U-shaped lifting hook and a lifting hook fixing hole, wherein the base is integrally arranged at the bottoms of the lateral bottom plates; bottom plate strips are integrally arranged at the bottoms of the lateral bottom plates, and sliding groove plates are fixedly arranged at thefront ends of the bottom plate strips in a welded mode; a sliding groove is formed in the middle of the bottom of each sliding groove plate, and fixing through grooves which penetrate through the sliding grooves are formed in two sides of the sliding groove plates; two sets of screw holes are formed in two sides of each sliding plate, and the sliding plates are fixed in the sliding grooves through bolts which penetrate through the fixing through grooves and then are inserted into the sliding plate screw holes. The carrying mechanism has the linked extending capacity through lateral end platesand extending plates, the positions of the extending plates and the lateral end plates can be effectively fixed, and the height of the carrying mechanism is adjusted in a matched mode, so that the purpose of adjusting the space size is achieved.