40results about How to "Reduce contact gap" patented technology

The invention discloses a patrol missile folding wing mechanism. The patrol missile folding wing mechanism comprises gears, racks, a bottom fixing plate, an upper clamping plate, a spring unit, an unfold locking mechanism and a fold locking mechanism. The bottom fixing plate is fixed to the top of a missile body. Strip guide grooves are formed in the upper surface of the bottom fixing plate. The strip guide grooves are parallel to the axial line of the missile body. Upper and lower rotating shafts of each gear are separately inserted in inner rings of two bearings. The outer rings of the two bearings are separately inserted in holes of the upper clamping plate and the bottom fixing plate. The racks are straight plate components with engaging teeth on two sides. The engaging teeth on two sides are engaged with the two gears. The rear ends of the racks are connected with the spring unit. The spring unit is fixed onto the bottom fixing plate. Positioning pins are mounted on the lower surfaces of the racks. The positioning pins slide along the guide grooves. The upper clamping plate is fixed to the bottom fixing plate by a connecting component. Moving reliability is high, the unfoldingprocess is stable, and unfolding and locking of the folding mechanism can be achieved.

The invention provides a conduction cooling type high-temperature superconducting binary current lead which is simple in process and convenient to install, and particularly relates to a structure of the high-temperature superconducting binary current lead. The whole high-temperature superconducting binary current lead comprises an indoor temperature copper connector, a copper lead section, a connection transition section, a superconducting combination section and a low temperature copper connector, and is characterized in that a two-stage refrigerating machine is adopted for the whole current lead for conduction cooling, the structure is simple, the cooling effect is good, and installation is convenient. Meanwhile, the conduction cooling type high-temperature superconducting binary current lead is wider in application range relative to gas cooling, for example, the conduction cooling type high-temperature superconducting binary current lead can be applied to a superconducting fan. The superconducting combination section of the current lead is formed by welding finished superconducting strips and a copper braided strap, the current lead can be obtained by increasing or decreasing the number of the superconducting strips in parallel connection according to the demands of users for the magnitude of currents, machining and installation processes are simplified, materials are saved, and cost of the lead is saved.

Disclosed is a multistage dry vacuum pump which is simple and compact in structure, needs only few components, is optimal in cooling performance, cheap in material cost, does not get thermally deformed, can completely discharge gas through increase of backpressure, and has increased facility vacuum degree. The multistage dry vacuum pump comprises multistage cylinder bodies, coupled rotors, coupled pump shafts, a motor, coupled gears, gas channels, internal cooling channels, external cooling channels and a cooling fan, wherein each multistage cylinder body has internal accommodation space, a sucking portion on one side and a discharging portion on the other side; the coupled rotors are accommodated in the internal accommodation space of the cylinder body and rotate in a mutually engagement manner; the coupled pump shafts are engaged with the rotors; the motor drives at least one pump shaft; the coupled gears are installed at the pump shafts and rotate synchronously with the shafts; the gas channels are communicated with the internal accommodation space of the multistage cylinder body and are formed into a spiral shape on an outer surface of each cylinder body; the internal cooling channels are formed into a concentric shape on inner sides of the gas channels, and axially penetrate through the cylinder bodies surrounding arc-shaped shafts on two sides of the internal accommodation space; the external cooling channels are concentrically surrounding arcs on outer sides of the gas channels; and the cooling fan is disposed at a connection part position of the motor and the pump shafts.

The invention discloses a raise boring machine panel and a raise boring machine. The raise boring machine panel comprises a panel body and outer corner covers, wherein the obverse surface of the panel body is connected with the outer corner covers through a first buckling structure, and the circumferential lateral surface of the panel body is connected with the outer corner covers in the circumferential direction through a second buckling structure. Through the first buckling structure and the second buckling structure, the joints between the outer corner covers and the outer side of the obverse surface of the panel body are moved to the lateral surface of the panel, so that the contact joints on the surface of the raise boring machine panel are reduced. Only two matching joints are reserved between each outer corner and the panel body, so that the panel looks more beautiful overall. The raise boring machine panel and the raise boring machine have the characteristics of being simple in structure and convenient to mount and dismount.

The invention discloses a double-sided cooling structure for a power semiconductor module. A heat dissipation bottom plate of a first radiator and a heat dissipation bottom plate of a second radiatorare arranged in parallel at an interval, and the power semiconductor module is arranged between the heat dissipation bottom plate of the first radiator and the heat dissipation bottom plate of the second radiator; a heat dissipation bottom plate of the first radiator abuts against the wall of the controller box body, the periphery of the heat dissipation bottom plate of the first radiator is connected with the controller box body, and a first cooling water channel is formed between the heat dissipation bottom plate of the first radiator and the wall of the controller box body; and an input port and an output port of the first cooling water channel are respectively connected with a cooling liquid output end and a cooling liquid input end in the controller box body. Through large-area contact with the controller box body, the heat capacity of the radiator is increased, temperature fluctuation of the power semiconductor chip is avoided while the controller box body is fully cooled, closecontact between the power module and the cooler is achieved, the contact gap is reduced, and the cooling effect is improved.

The present invention discloses a composite stranding high-speed wire-stranding machine. The composite stranding high-speed wire-stranding machine comprises a wire-stranding host, a mounting rack, a front distributor plate, a back distributor plate, a first stranded wire die and a second stranded wire die. The mounting rack is arrange at the stranded wire port near the wire-stranding host, the front distributor plate and the back distributor plate are arranged on the mounting rack at intervals in order, the first stranded wire die is arranged at the back distributor plate, and the second stranded wire die is arranged at the stranded wire port; the front distributor plate and the back distributor plate are employed to perform uniform arrangement distribution of a plurality of single branches, the first stranded wire die is employed to perform concentration of the single branches located at center area positions to form a core set, and the single branches located at the surrounding area positions pass through back branching holes on the back distributor plate and then perform arrangement once again to allow the single branches located at the surrounding area positions to be uniformly distributed. The composite stranding high-speed wire-stranding machine effectively reduce the external resistance to allow laying tension to be balanced, the diameters of single branches is not easy to become small through pulling, and the single branches are subjected to uniform composite stranding on the core set through the second stranded wire die so as to reach the composite stranding effect, allow the wire material products after the composite stranding to be smooth and rounding and effectively ensure the quality of products.

The invention discloses a cleaning device capable of cleaning snail cracks, which comprises a support mechanism for turning the device over, a cleaning mechanism for cleaning screw slits, and a rotating mechanism for squeezing snails. The inner wall of the support mechanism is welded with two Bearings, the inner wall of the support mechanism is fixedly connected to the rotating mechanism through the provided bearing, the outer wall of the rotating mechanism is welded with a connecting rod, and the outer wall of the rotating mechanism is welded with a cleaning mechanism through the provided connecting rod. Each side of the mixing bucket is a curved quadrilateral. During the rotation of the mixing bucket, when the snails rotate from the concave part of the mixing bucket to the raised part, the snails will keep moving and scrub each other. The arc of the mixing bucket Smaller, the snails will not only accumulate in the recess of the mixing bucket, the coil spring will swing around irregularly during the rotation process, the coil spring is helical, and the snail is also helical, when the coil spring passes through the outer surface of the snail , it will be easier to clean the dirt in the crevices of the snails.

The invention provides a foaming effect evaluation device for a chemical agent. The foaming effect evaluation device comprises a foaming pipe and a view window container, wherein an inlet end of the foaming pipe is connected with a gas bottle and a foaming liquid container, respectively; and a movable piston is arranged in the view window container, a foaming cavity is formed between the piston and the bottom wall of the view window container, an injection hole is formed on the bottom wall of the view window container, the foaming cavity is communicated with an output end of the foaming pipe through an injection hole, a discharging pipe is inserted into the piston, a plurality of view window holes are formed in the peripheral wall of the view window container, and observation mechanisms are arranged in the view window holes. The invention further provides a foaming effect evaluation method for the chemical agent. The foaming effect evaluation method comprises the following steps: moving the piston to set the volume of the foaming cavity; vacuumizing the foaming cavity; introducing gas and foaming liquid to enter the foaming pipe to be mixed, and injecting the gas and the foaming liquid into the foaming cavity through the injection hole for foaming; and observing the foaming height in the foaming cavity by virtue of the observation mechanisms. The volume of the foaming cavity is adjusted by moving the piston, so that the requirements on different foaming volumes of various chemical agents are met, and the evaluation of the foaming effects of the chemical agents is realized.

The invention discloses a flower basket conveying line. The flower basket conveying line comprises an upper conveying line, a lower conveying line and a corner conveying line, wherein the upper conveying line and the lower conveying line are arranged in a staggered way, the conveying directions of the corner conveying line and the lower conveying line are same, the height of the corner conveying line is lower than that of the upper conveying line, two ends of the corner conveying line are respectively arranged in the upper conveying line and the lower conveying line, the corner conveying line is configured with an ejection mechanism, and a lower concave part is arranged at a position, corresponding to a transition position of the upper conveying line and the lower conveying layer, on the corner conveying line and is used for avoiding the upper conveying line during rising. The conveying method of the flower basket conveying line comprises the steps of transmitting a flower basket to a part above the corner conveying line along the upper conveying line; driving the corner conveying line to rise by the ejection mechanism, and transmitting the flower basket to the corner conveying line; starting the corner conveying line, and transmitting the flower basket along the lower conveying line; and transmitting the flower basket to a part above the lower conveying line, driving the corner conveying line to descend by the ejection mechanism, and transmitting the flower basket onto the lower conveying line. The flower basket conveying line has the advantages of small contact gap, transmission stability, low debris rate and the like.

The invention discloses a heavy pre-pressing high-rigidity narrow linear guide rail device. A guide rail (1) and a sliding block (2) matched with the guide rail (1) are included. Each of the left sideand the right side of the sliding block (2) is provided with a row of small pin rollers (3), a row of big pin rollers (4) are located between small pin rollers (3) on the left side and the right sideof the sliding block (2), the high-rigidity design that length is 4-6 times of the diameter is adopted in the big pin rollers (4), the width size of the sliding block (2) is 34-248 mm, and returners(5) are arranged at the two ends of the sliding block (2). According to the heavy pre-pressing high-rigidity narrow linear guide rail device, through high-rigidity design of the big pin rollers, pre-pressing of a linear guide rail is increased, the contact gap between the pin rollers and the guide rail is reduced, accordingly, the contact area between the pin rollers and the guide rail is increased, precision of the linear guide rail is gradually improved, and accordingly the service life of the linear guide rail is greatly prolonged. Through the narrow design of the width size of the slidingblock, guiding and running flexibility of the sliding block is greatly improved, the size of a precision machine table is reduced, and flexibility and machining precision of the machine table are improved.

An embodiment of the present invention provides a method for preparing an all-solid-state battery, which relates to the technical field of batteries. The method comprises: pressing the solid electrolyte powder into an electrolyte sheet, mixing lithium cobaltate, polyvinylidene fluoride, carbon nanotubes and N-methyl-2-pyrrolidone in a mass ratio of 40:9:8:6, and configuring the Mixed solution, the mixed solution according to 0.1mg / cm 2 The amount of the electrolyte sheet was dropped on the surface of the electrolyte sheet, dried, sprayed gold on the surface of the electrolyte sheet, and sintered at 700°C for 0.5h to obtain the target electrolyte sheet, and assembled the battery with the target electrolyte sheet. By covering the cathode material gold film on the surface of the electrolyte, and then heat treatment, the contact gap between the active material and the electrolyte in the assembled battery can be greatly reduced, and the discharge of organic matter in the battery can reduce the internal resistance of the interface and avoid falling off. problems, improving the energy density and cycle stability of all-solid-state batteries.

The invention discloses a folding wing mechanism of a loitering bomb, which comprises a gear, a rack, a bottom fixing plate, an upper splint, a spring unit, an unfolding locking mechanism and a folding locking mechanism. The bottom fixing plate is fixed on the top of the bomb body, and its upper surface There are long guide grooves, which are parallel to the central axis of the body; the upper and lower rotating shafts of each gear are respectively inserted into the two bearing inner rings, and the two bearing outer rings are respectively inserted into the holes of the upper splint and the bottom fixing plate; the rack is A straight plate member with meshing teeth on both sides, the meshing teeth on both sides mesh with two gears respectively, its rear end is connected with the spring unit, the spring unit is fixed on the bottom fixing plate, and a positioning pin is installed on the lower surface of the rack. The positioning pin slides along the guide groove, and the upper clamping plate is fixed on the bottom fixing plate through the connecting piece. The invention has high motion reliability and stable unfolding process, and can realize unfolding and locking of the folding mechanism.

The invention belongs to the technical field of filters, and particularly relates to a check valve sheet for filters. The check valve sheet comprises a boss-shaped sheet body and a conical ring surface, an annular protrusion is arranged on a part, at an annular outer edge, of the conical ring surface, an annular step is arranged on the outer wall of the boss-shaped sheet body, two annular sealing protrusions are arranged on the outer wall of the annular step, the distance between the annular sealing protrusions is 3-5mm, a stepped through hole is formed in the center of the boss-shaped sheet body, and a step of the stepped through hole is of an annular structure. Contact gaps between the check valve sheet and an inlet pipe as well as between the check valve sheet and a spool can be effectively decreased, integral sealability and abrasion resistance can be improved, and fuel efficiency of an engine can be increased. The check valve sheet is simple in structure, wide in application range and long in service life.

The invention discloses a high-voltage button cell. The high-voltage button cell comprises a negative electrode cover and a positive electrode shell which are matched with each other to form a cell shell, wherein a cavity formed by the negative electrode cover and the positive electrode shell is internally provided with a plurality of battery cells which are connected in series with each other; each battery cell comprises a positive plate and a negative plate; a diaphragm is arranged between the positive plate and the negative plate; the positive plate / the negative plate in each battery cell is electrically connected with the negative plate / the positive plate in another adjacent battery cell; and each battery cell is separated from the other adjacent battery cell which is connected in series through the diaphragm. The series connection in the button cell is directly completed with no need for connection a plurality of battery cells in series to form a battery pack so as to solve the problem of battery core consistence.