82results about How to "Uniform driving force" patented technology

The strap-type coaxial medium-high-frequency loudspeaker comprises: a high-pitch loudspeaker unit on center, which comprises: a magnetic circuit with all of a loop top magnetic conductive plate and a high-pitch loop Nd-Fe-B magnet and a U-shaped magnetic conductive plate, and a high-pitch strap plane diaphragm; and a mean-tone loudspeaker unit on outer loop, which comprises: a T-shaped magnetic circuit with all of a mean-tone U-shaped magnetic conductive plate and a loop magnetic conductive column and a loop Nd-Fe-B magnet, and a double arc diaphragm. This invention belongs to Hi-Fi apparatus.

The invention discloses a snail-type vertical centripetal straight-toothed shaft driven non-equidistant cylinder electrically-driven double-work engine, comprising central straight drive shaft, eccentric shaft gear disc, cylinder, piston, drive push-pull chain rod, and external output main drive one-way gear, where the engine is like a snail and its inside has plural cylinders, annularly and vertically distributed, the external output main drive one-way gear is installed on one side of the central straight drive shaft for transmitting rotating force. And the invention has characters of low energy loss, uniform driving force, and able to implement two driving modes of cylinder and electric powder.

The invention provides a pad conveying mechanism of a combined grinder of an automobile brake pad. A pad conveying ratchet wheel is arranged at the pad outlet of a pad containing box; one side of the pad conveying ratchet wheel is provided with a guide rail which extends into the combined grinder; and the pad conveying ratchet wheel is connected with a power system and is similar to an equilateral polygon. The pad conveying mechanism utilizes the principle of a ratchet wheel mechanism, uses a proper pad conveying ratchet wheel, and utilizes the characteristic that the horizontal velocity component is changed in the moving process of ratchets so as to lead the brake pad to obtain uniform and strong thrust during the grinding process and keep stable conveying speed; thereby, the quality of the brake sheet is ensured and the production efficiency is improved.

The invention relates to a portable bicycle, which is characterized in that a bicycle seat frame is arranged on a lower bicycle frame; the portable bicycle comprises a bicycle seat, a seat rod, a rear upper fork and a rear upper fork frame; the lower end of the seat rod is connected with the front end of a front wheel accommodating groove of the lower bicycle frame through a seat rod shaft; the bicycle seat is arranged at the upper end of the seat rod; the upper end of the rear upper fork is connected with the seat rod through a rear upper fork shaft; the rear upper fork frame is fixedly connected with the rear end of the front wheel accommodating groove on the lower bicycle frame; a front bicycle frame, the seat rod, the lower bicycle frame and the rear upper fork are respectively made of two rectangular parallel flat plates which are arranged symmetrically, so that a front bicycle wheel and a rear bicycle wheel are inserted in a gap between the parallel flat plates when the bicycle body is folded, therefore the volume of the folding bicycle is largely reduced. On the condition of adopting a bicycle wheel with a diameter of 10 inches, the folded size of the portable bicycle disclosed by the invention is 64 cm * 25.4 cm * 9.5 cm; and the portable bicycle has the advantages of light weight, high folding speed and convenience and safety for riding.

The invention relates to a cutting device for strips made of plastically deformable material, the strips are moved onto a conveyor belt in a channel extending longitudinally along the strips, and have at least one cutting line extending transversely to the channel, cutting The wire is clamped on the clamping frame at the end side, and the clamping frame makes the cutting wire move from one side of the channel to the other side and back with the longitudinal movement through the longitudinal transmission device and the transverse transmission device. The transverse transmission device includes a hinged rod A crank connecting rod, one end of the hinge rod is connected to the clamping frame through a first rotary hinge to swing around the first hinge axis, and the other end is connected to one end of at least one swing rod through a second rotary hinge to swing around the second swing axis Connected, the other end of the swing rod swings around the bearing axis and is supported on the turntable bearing. To ensure the length of the lateral movement of the clamping frame, the first and second articulation axes and the bearing axis extend parallel to the longitudinal direction of the channel, the clamping frame moves in relation to the crank rod in a longitudinal guide extending longitudinally along the channel.

The invention provides a flat plate type bass loudspeaker, which comprises a vibration diaphragm, at least six independent driving units and an outer casing, wherein the vibration diaphragm is of a rectangular structure and comprises a rigid ball top part and a corrugated rim part, the ball top part is positioned at the center of the vibration diaphragm, the corrugated rim part is positioned at the edge of the vibration diaphragm, each driving unit comprises a voice coil unit and a magnetic circuit unit corresponding to the voice coil unit, the four voice coil units are respectively combined at the four corners of the ball top part of the vibration diaphragm, the other voice coil units are respectively arranged at one group or two groups of opposite edges of the rectangular ball top part, and are arranged in one straight line together with the two voice coils at the edge corners in an equidistant way, the outer casing is provided with mounting holes or voice outlet holes, and the corrugated rim part of the vibration diaphragm is fixedly connected with the peripheral part on the side surface of the outer casing. The flat plate type bass loudspeaker can solve the problems of the heavy voice coils, excessive magnet performance and insufficient driving force.

A printed circuit board unit includes a first board and a second board. First electrically-conductive terminals are fixed and exposed on the front surface of the first board within a specific area of the first board in a matrix. Second electrically-conductive terminals are arranged in a matrix and supported on the front surface of the second board. The second electrically-conductive terminals have flexibility. Each of the second electrically-conductive terminals is disengageably brought in contact with the corresponding first electrically-conductive terminal. A static pressure member is received on the back surface of the first board within an area corresponding to the specific area to generate a static pressure. An urging plate is overlaid on the static pressure member so that the static pressure member is interposed between the urging plate and the first board. The urging plate exhibits an urging force applied to the first board toward the second board.

The invention discloses an automatic clutch driving mechanism, an engine and a motorcycle. The automatic clutch driving mechanism comprises a clutch cam disc and a clutch operating rocker arm, wherein an open groove is formed in the clutch cam disc; the clutch operating rocker arm drives the clutch cam disc to rotate through the open groove, and separation and reunion of a clutch are achieved; a curve formed by the cross section of the open groove on the side wall is a driving line; the driving line is integrally symmetrical and is gradually increased from inside to outside; and the single side edge of the driving line sequentially comprises a first linear section and a curve section from inside to outside. According to the automatic clutch driving mechanism, driving resistance of the automatic clutch driving mechanism is prevented from being relatively large, resistance suffered by the clutch operating rocker arm is improved through the curve section, blocking is avoided, smoothness of automatic clutch driving is improved, and comfort during gear shifting operation is guaranteed.

The invention provides an efficient dual-cylinder even compression dustbin which comprises compression heads and two compression oil cylinders. The bottoms of the two compression oil cylinders are respectively and fixedly connected with a dustbin body, and the tops of the two compression oil cylinders are fixedly connected with the compression heads receptively. Due to the fact that the two compression oil cylinders have two establishment points, the problems of existing single-point force bearing and low compression efficiency are solved.

An object preparation device for preparing an object in a particle beam apparatus includes at least one cutting device, at least one cutting bevel for cutting the object, where the cutting bevel is arranged at the cutting device, at least one movably embodied object receptacle device having an object receptacle for receiving the object, and at least one drive unit for moving the object receptacle device from a first position of the object receptacle device into a second position of the object receptacle device. The first position of the object receptacle device is an initial position. The second position of the object receptacle device is an analysis and/or processing position of the object receptacle device. An observation axis (OA) extends through the object receptacle when the object receptacle device is arranged at the second position.

The invention belongs to the field of 3D printing fused deposition modeling, and discloses a multi-material synchronous fed FDM spray head. The spray head comprises a feeding unit, a mixing chamber, apneumatic extrusion unit and a nozzle, wherein materials enter the mixing chamber from the feeding unit, then are stirred and uniformly mixed, enter the nozzle under the action of the pneumatic extrusion unit and are extruded; and the feeding unit comprises a plurality of feeding ports, each feeding port is provided with a funnel, an upper pneumatic butterfly valve, a transition bin and a lower pneumatic butterfly valve, after the materials are added into the funnels, the upper pneumatic butterfly valves are opened to enable the materials to enter the transition bins, then the lower pneumaticbutterfly valves are opened to enable the materials to enter the mixing chamber, in the process, the upper pneumatic butterfly valves and the lower pneumatic butterfly valves are opened separately step by step, so that external gas is prevented from entering the mixing chamber, air pressure in the mixing chamber is ensured, and meanwhile the materials in the mixing chamber are prevented from being oxidized. According to the spray head, extrusion forming of complex parts including different types and different gradient materials is realized, the forming time is shortened, and the forming efficiency and the forming precision are improved.

The invention provides a high-stability electric surfboard. The high-stability electric surfboard comprises a surfing base board, a power source component, a drive component and a steering control component. The drive component comprises a drive circuit template, a drive motor and fan blades. A power source installation cavity is formed in the middle portion of the upper layer of the surfing baseboard, and a drive installation cavity is formed in the tail portion of the upper layer of the surfing base board. The power source component is installed in the power source installation cavity, andthe drive circuit template is installed in the drive installation cavity. The fan blades are installed on a rotary shaft of the drive motor, and the fan blades and the drive motor are installed on thetail portion of the lower layer of the surfing base board, so that the front end of the surfing base board is lifted up, the tail portion of the surfing base board inclines downwards, the gravity center of the whole surfing base board deviates to the rear portion horizontally, the fan blades can drive a water stream to be obliquely sprayed out downwards, the surfboard stably moves forwards at a low speed, use stability is improved, losses are reduced, and a surfing effect is guaranteed. The surfboard is matched with the structure that the outer wall faces of sealing layers are flush with thefour side walls of a power source cover body and the four side walls of a drive cover body, water is prevented from flowing into the cavities, and normal use of the electric surfboard is guaranteed.

The invention provides an isolation mechanism. The isolation mechanism comprises a rotary shaft, grain, a rotary wheel, an installing seat, an action source and a rotary motor, wherein a cylindrical cavity is formed in the installing seat; the rotary shaft is vertically and coaxially fixed in the cavity and fixedly provided with the rotary wheel; the rotary motor is fixed at the bottom end of therotary shaft and drives the rotary shaft to rotate; the grain is fixed to the position, near the edge, inside the rotary wheel in a penetrating mode; and the action source is arranged at the position,corresponding to the lower portion of the grain, in the installing seat. The rotary motor provides driving force, reverse rotation driving of the rotary wheel is realized, the isolation mechanism ofa device can conveniently restore to the initial state after two-level safety is relieved, the driving force on the rotary wheel at the initial stage and the ending stage is uniform, the rotary wheelis effectively driven to rotate in place, and the reliability of relief of two-level safety is improved. An electromagnetic clamp device is used for conducting two-level safety restraining on the isolation mechanism, and the relief performance of two-level safety of the isolation mechanism can be detected without carrying out a destructive test.

The invention discloses a compound drive bicycle. The bicycle comprises a transmission hoist in transmission connection with a corresponding intermediate shaft wheel and a pneumatic drive device in transmission connection with a rear wheel and further comprises a transmission conversion device. The transmission conversion device comprises air cylinders and a crank. The air cylinders are in transmission connection with the transmission hoist through the corresponding crank and a transmission coupling device. The air cylinders are connected with the pneumatic drive device through exhaust valvesof the air cylinders. The compound drive bicycle is particularly simple and reasonable in transmission structure, fast in starting, high in traveling speed and transmission efficiency, capable of saving more labor, good in different-power coordination and balanced in drive force in the traveling process.

A cabinet door apparatus for an electrical cabinet is used to open and close an operation window (101) of the electrical cabinet (100), and comprises an upper projecting part (11) and a lower projecting part (12) integrally arranged with the electrical cabinet (100), two guiding columns (13) which are arranged between the upper projecting part (11) and a lower projecting part (12) and symmetrically arranged in the front end of the operation window (101), a cabinet door plate (211) which is guided by the two guiding columns (13) and can slide up and down, and a driving assembly (200) which drives the cabinet door plate (211) to slide up and down, wherein the driving assembly (200) comprises two fixed sleeve columns (4) which are fixed on the upper projecting part (11) in a left-right symmetrical way, and a fixed connecting plate (21) which is arranged under the two fixed sleeve columns (4) and fixedly connected to the upper edge of the cabinet door plate (211).

A stable cabinet door apparatus for an electrical cabinet is used for opening and closing an operating window (101) of an electrical cabinet (100). The apparatus comprises an upper protruding portion (11) and a lower protruding portion (12) integrally arranged with the electrical cabinet (100), two guiding columns (13) fixedly arranged between the upper protruding portion (11) and the lower protruding portion (12) and symmetrically distributed at the front end of the operating window (101), a cabinet door plate (211) which is guided by the two guiding columns (13) and can be slid up and down, and a driving assembly (200) used for driving the cabinet door plate (211) to slide up and down, wherein the driving assembly (200) comprises two fixed sleeve columns (4) fixed on the upper protruding portion (11) on the left and the right symmetrically, and a fixed connecting plate (21) which is under the two fixed sleeve columns (4) and is fixedly connected with the upper edge of the cabinet door plate (211).

The invention discloses a directional grouting structure which is used for directional grouting in a grouting hole and comprises a casing material poured in the grouting hole, a flow guide pipe, a grouting pipe and sealing plugs, wherein the flow guide pipe is arranged in the grouting hole, a plurality of rows of slurry spraying openings for directional spraying are formed in the flow guide pipe,and the flow guide pipe is wrapped by the casing material; the grouting pipe is arranged in the flow guide pipe, and a slurry outlet is formed in the grouting pipe; and the two sealing plugs are fixedto the grouting pipe, the slurry outlet is located between the two sealing plugs, the grouting pipe can move in the flow guide pipe in a sliding mode through the sealing plugs, a slurry spraying cavity is formed between the two sealing plugs and the flow guide pipe, and the slurry spraying cavity is connected with at least one row of slurry spraying openings. Meanwhile, the invention further provides a deviation rectifying system for a pier roadbed. The directional grouting structure and the deviation rectifying system of the pier roadbed have the advantage that damage to surrounding existingbuildings is prevented in horizontal deviation renovation of the pier roadbed.

The invention discloses a double-driving pneumatic bicycle. The double-driving pneumatic bicycle comprises a center axle, a rear wheel axle, and a transmission hoisting device which are arranged on a bicycle body, wherein the rear wheel axle is provided with two driving flywheels; two center axle wheels are connected to the center axle; a pneumatic device is also arranged on the bicycle body; the pneumatic device is in transmission connection with one driving flywheel corresponding to the rear wheel axle, and one center axle wheel corresponding to the center axle respectively. The double-driving pneumatic bicycle is reasonable in transmission structure, fast to start, and high in running speed, and saves labor. According to the double-driving pneumatic bicycle, two kinds of dynamic force cooperate, and the driving force is balanced during running.