107results about How to "Strong structural versatility" patented technology

The invention provides an input-series-output-parallel auto balanced voltage transformer based on a full-bridge topology belonging to the dc transformer field. The dc transformer is composed of N dc transformers with a full-bridge topology structure (N is natural number), wherein the input ends of the dc transformer power modules are mutual in-series and connected to the positive and negative terminals of a dc voltage source, the output ends are mutual parallel and connected to two ends of an output filter capacitor. Each power module of the full-bridge topology structure dc transformer comprises an input capacitance, a full-bridge circuit, a series inductance, a high frequency isolating transformer and an output rectifier circuit. The full-bridge circuit comprises a full-bridge circuit formed by four switch tubes, each power module works in the same work frequency or a different work frequency at a duty cycle near to 0.5. The balance voltage at each input side of the power module is auto realized using the input-series-output-parallel structure and secondary side clamping action of the transformer. The transformer provided by the invention not only can be applied in the occasion that no voltage adjustment is needed during the input and output high voltage, but also the occasion of different input voltage grades, which has a good application flexibility and has certain application prospects in the high voltage input and high power occasions.

A small cake tea press forming mold is used in cooperation with an oil press (48) and comprises an upper mold and a lower mold. The upper mold comprises an upper bearing board (1), a positioning board (25), guide columns (5) and a plurality of upper column heads (7); the lower mold comprises a frame, a mold cavity board (4), a connection board (39), a movable board (8), a jack column (11), a lower mold support column (14), two air cylinders I (12), two air cylinders II (13), two air cylinders III (15), two connection blocks (22), two small supports (41), two platens (47) and two support blocks (3); the mold cavity board (4) is provided with mold holes (40) corresponding to the upper column heads (7); the movable board (8) is provided with lower column heads (10) corresponding to the mold holes (40). During operation, firstly, the oil press (48) is started, then steamed tea base raw materials are put into the mold holes (40), and then the press is performed and the pressured is maintained. The labor intensity is low and the production efficiency is high.

The invention discloses a cooking appliance which comprises a pot body, wherein the pot body is provided with a cooking cavity with an open top; a cover body, wherein the cover body is movably arranged on the pot body between an open position and a closed position and the cover body is provided with an air extraction port and an air extraction channel, the inlet end of the air extraction channel is communicated with the air extraction port, and the outlet end of the air extraction channel is communicated with the outside; an air extraction device, wherein the air extraction device is detachably connected to the outlet end of the air extraction channel so as to form negative pressure in a cooking cavity. According to the cooking appliance provided by the embodiment of the invention, by arranging the detachable air extraction device, a user can select different working modes according to requirements, and when negative pressure cooking is required, negative pressure is formed in the cooking cavity through the air extraction device, so that the universality of the air extraction device is improved, meanwhile, the structure of the cover body is simplified, and the cover body is convenient to assemble and install with the air extraction device, so that the cover body is convenient to popularize.

The invention discloses a building joint of a modular house combining and splicing structure. The building joint comprises a corner element and a connecting piece connected with the corner element. The corner element comprises a square tube column and a partition board arranged in the square tube column and dividing the interior of the square tube column into multiple square cells. A plurality of bolt holes are formed in the four faces of the square tube column and the partition board respectively. The connecting piece comprises a fixing plate and conical vertical tubes arranged on the fixing plate and capable of being inserted into the square cells in the square tube column to be fixed, and the shape and the size of the fixing plate are same with those of the bottom of the square tube column. The four conical vertical tubes on the fixing plate are distributed on the fixing plate shaped like the Chinese character of 'tian'. The bolt holes are formed around the conical vertical tubes. A building steel column is connected to the bottom face of the fixing plate. The connecting piece is connected with one corner element or two corner elements or three corner elements or four corner elements. The building joint has the effects of being good in structure universality, flexible to splice, simple in structure and convenient to assemble and disassemble.

The invention discloses a bulb structure and steering system of a steering pull rod. The bulb structure comprises a bulb pin (1), a joint part (4), a base (5) and an elastic supporting base (6), wherein the a limit accommodating cavity for accommodating a bulb is arranged in the joint part, and a pin rod stretches out towards one side of the joint part from the bulb; the base is mounted on the bottom wall of the other side opposite to the side from which the pin rod stretches out, of the joint part; the elastic supporting base is positioned in the limit accommodating cavity and mounted on the base so as to support the bulb, the elastic supporting base is an integrated annular elastic piece, and the annular elastic piece comprises an inner ring part (61) and outer ring parts (62), wherein the bottom end of the inner ring part and the bottom ends of the outer ring parts are respectively arranged on the base in a supporting manner, the bottom end of the bulb is inserted in the inner ring part and is elastically propped against the inner wall of the inner ring part. The bulb structure disclosed by the invention has the advantages that the components are few, the assembled structure is simple, the elastic supporting base and the base are unlikely to deform and lose efficacy, and the large-scale manufacturing, maintenance and replacement are convenient to perform.

The invention provides an aircraft gate area step-like wrap angle part drawing and forming method. The aircraft gate area step-like wrap angle part drawing and forming method constructs a working process piece with holes formed in the bottom according to a special symmetrical structure of a step-like wrap angle, and a large hole is formed in a crease-resistance expanded blank, a theoretical expanded blank is calculated through general simulation software, and a forming die is used for completing workpiece forming. The aircraft gate area step-like wrap angle part drawing and forming method is simple in a crease-resistance allowance taking-producing method and can better ensure the material thickness of parts after forming within an allowable range of tolerance. The defect that a dangerous cross section is prone to being cracked when a pot-shaped complex part is subjected to drawing and forming is solved, and the drawing limit of parts is raised. The aircraft gate area step-like wrap angle part drawing and forming method is high in universality, and can refer to the forming of different door wrap angle structural parts of aircrafts, and product quality is stable and dependence on thetechnical level of operators is low.

The invention discloses a belted layer attaching drum of a tyre building machine. A swell-shrink apparatus comprises a sliding shaft, shaft seats, cone-shaped sliding bases, linear guide rails and supporting frames corresponding to drum blocks, wherein the sliding shaft is supported by the shaft seat at two ends of the sliding shaft; the cone-shaped sliding bases are slidingly mounted on the sliding shaft and connects an axial pushing mechanism; the linear guide rails are evenly distributed on the cone-shaped surfaces of the cone-shaped sliding bases; the supporting frames radially disposed corresponding to the linear guide rails are matched with the linear guide rails through guide rail sliding blocks; each drum block is located in position by being installed on the supporting frames; stainless steel lapping plates are disposed between adjacent drum blocks; one end of each lapping plate is fixedly installed on a side drum block; the other end of each lapping plate is lapped on the another side drum block; a guiding mechanism is disposed between installation plates and two end shaft seats; each drum block generates radial swell-shrink movement along left-and-right motion of the one-shaped sliding bases; and the lapping plates can guarantee that the excircle of the drum at work is a standard circle. The belted layer attaching drum is light in overall structure and convenient for control, and has high attaching precision, good structural generality and strong adaptability.

The invention relates to a straight shaft plunger pump, in particular to a straight shaft plunger pump with a limiting arc-shaped slide rail balance. The straight shaft plunger pump comprises a pump body, a cylinder body, a plunger, a balance, two planar arc-shaped slide rails and a balance angle adjusting device, wherein the bottom of the balance is provided with two slide tracks; the two planerarc-shaped slide rails are arranged at the bottom of the pump body in a sliding mode with the slide tracks of the balance, and are used for supporting the balance; and the slide rails on at least oneside are transverse limiting arc-shaped slide rails and the slide tracks on the balance are transverse limiting arc-shaped slide tracks. The transverse limiting arc-shaped slide rails and slide tracks increase the side force of a contact surface, reduce the transverse play of the balance, improve the stress state of the balance, improve the smoothness of a rotor, lighten vibration and fulfill theaim of reducing noises of the whole pump. Besides, the assembly of the whole pump is more simplified, and the assembly accuracy is also improved.

The invention discloses a built-in rotary cathode structure. The built-in rotary cathode structure comprises a cathode door, wherein a motor seat is arranged at the lower end of one side of the cathode door; a target motor is arranged at the upper end of the motor seat and is fixedly mounted on the motor seat; a synchronizing wheel is arranged at the lower end of the motor seat; a lower end seat and an upper end seat are arranged on the other side of the cathode door; a lower end cap, a target tube and an upper end cap are arranged at the upper end of the lower end seat; the synchronizing wheel is fixedly connected with the lower end cap; and magnetic fluid is arranged at the lower end of the lower end cap. The target tube of the built-in rotary cathode structure is rotary, so that a target surface has a self-cleaning function; the utilization rate of a target material is high, a magnetic pole piece is slender, and uniformity of the thickness of a deposited film is improved; a magnetic fluid sealing design is adopted, the built-in rotary cathode structure is suitable for a production process for batch production, and modular design of a vacuum cavity of a large-area production line is facilitated; and the length of the whole magnetic pole piece can be increased according to the process, the structure of the cathode door is good in universality, the utilization rate of the target material is high, and process stability is also high.

The invention discloses a comfortable bedside device with a backrest, and mainly solves the problem that the comfort degree of a conventional bedside device cannot meet the requirement. The comfortable bedside device comprises a bedside body (1), and is characterized in that the backrest (2) is arranged on the bedside body (1); the top end of the backrest (2) is fixed at the top end of the bedside body (1); supporting rods (3) are arranged at the back of the backrest (2); one end of each supporting rod (3) is hinged to the back of the backrest (2). The comfortable bedside device has the advantages of being capable of improving the resting quality, simple in structure and the like.

The invention provides a lithium ion battery which comprises an electric core, a top cover, a protective circuit board and a bracket, wherein the top cover is arranged on the bracket, the protective circuit board is arranged between the top cover and the bracket, the bracket is provided with a first mounting hole, a second mounting hole communicated with the first mounting hole is arranged on theelectric core, and the bracket is fixed on the electric core by penetrating and arranging a connecting piece in the first mounting hole and the second mounting hole. During packaging, the connecting piece is penetrated and arranged in the first mounting hole and the second mounting hole, the bracket is fixed on the electric core, and then the top cover and the protective circuit board are arranged on the bracket, thereby realizing the packaging of the lithium ion battery. Compared with the prior art, the technical scheme fixes the bracket by the connecting piece, simplifies the assembly process, enhances the production efficiency, does not need to invest specific equipment and molds for each style of concrete products and has low investment cost. Furthermore, the connecting piece is packaged inside the invention, the structural appearance is attractive, the invention has no requirement to the polar position of the protective circuit board, and the structural versatility is better.

The invention provides a switch-off energy recycling method and circuit. The switch-off energy recycling circuit comprises a capacitor C1, a capacitor C2 and an AC-DC converter, wherein the AC-DC converter comprises a rectification bridge B1 and a flyback circuit, the flyback circuit comprises a transformer T1, a primary circuit and a secondary circuit, a primary winding of the transformer T1 forms the primary circuit, a secondary winding of the transformer T1 forms the secondary circuit, one end of the capacitor C1 is led out and used as a first input end of the switch-off energy recycling circuit, the other end of the capacitor C1 is connected with one end of the capacitor C2, the other end of the capacitor C2 is led out and used as a second input end of the switch-off energy recycling circuit, one end of the capacitor C2 is further connected with an AC input end of the rectification bridge B1, the other end of the capacitor C2 is further connected with another one AC input end of the rectification bridge B1, a DC output end of the rectification bridge B1 is connected with the primary circuit of the flyback circuit, and an output end of the secondary circuit of the flyback circuit is led out and used as an output end of the switch-off energy recycling circuit.

The invention relates to the field of condensers, in particular to a building block type cylindrical condenser. The building block type cylindrical condenser aims to solve the problems that condensersof other types are large in occupied space, not high in sealing performance and pressure bearing capacity and poor in structural universality and comprises a shell, a hot well, a hot well transitionsection, a steam exhaust throat, a throat cylindrical transition section, an inlet and outlet water chamber, a turn-back water chamber and the like, a tube bundle composed of a tube plate, a heat exchange tube and a plurality of heat exchange tube supporting plates is mainly arranged in the shell, the inlet and outlet water chamber and the turn-back water chamber are respectively fixed at two endsof the cylinder and are communicated with an inner cavity of the heat exchange tube; the hot well and the steam exhaust throat part are installed at the bottom and the top of the integrated cylinderand communicated with the cylinder, and the hot well and the steam exhaust throat part can be universally used for condensers of the same grade by adjusting the specification of the integrated cylinder. The building block type cylindrical condenser is mainly used for small-sized power stations of 100MW grade and below, and the advantages of the small-sized power stations with high-back-pressure operation conditions are more prominent.

The invention belongs to the technical field of drying devices and aims to solve the problem that an existing clothes dryer is lower in heat energy utilization rate. Therefore, the clothes dryer comprises a roller, wherein an air inlet is formed in the roller. The clothes dryer also comprises a heater, wherein the heater is arranged at the air inlet and located on the outer side of the roller, andthe heater can heat air entering the roller. Preferably, the heater is sheet and completely covers the whole air inlet. The heater is arranged at the air inlet of the roller so that the heater can bein contact with the clothes in the roller at short range, excessive heat loss in the hot air delivery process due to the overlong distance between the heater and the clothes is reduced, then the heatenergy utilization rate of the clothes dryer is improved, the temperature in the roller can quickly rise, and the drying effect of the clothes dryer can be improved.