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

The invention discloses a linear permanent magnetic rail brake. A permanent magnetic shaft in the same direction with a pole shoe is arranged between two side plates; a permanet magnet is fixedly sleeved on a permanent magnetic shaft; the permanent magnet is a shaft body composed of two half cylinders with different radiuses; a semi-arc separating plate is fixedly sticked on the surface of the half cylinder with the smaller radius; the semi-arc separating plate is combined with the permanent magnet to form a cylinder; an U-shaped permanent magnet is arranged between the semi-arc separating plate and each side plate; an U-shaped fixing slot is arranged between the half cylinder with the larger radius of the permanent magnet and each side plate; and the S pole or N pole of the U-shaped permanent magnet is arranged corresponding to the N pole or S pole of the permanent magnet. The braking power is controlled through controlling the rotating angle of the permanent magnet shaft, so that the vortex and friction braking manners are realized; the braking distance is reduced; and the braking effect is good.

The invention provides an orientation-adjustable platform-transferred high-stability nuclear-shaped abutment, and belongs to the technical field of dental restoration. The abutment comprises an abutment body, the abutment body comprises a first conical part, a protruding part, a second conical part, a limiting part and a positioning part which are sequentially connected, and the first conical part is used for increasing the contact area with teeth. The convex part is used for increasing horizontal compensation so as to reduce a contact gap with an implant, the second conical part is attached to the inner side of the implant, the limiting part is embedded into the implant, and the positioning part is used for being inserted into the implant so as to achieve alignment of the abutment body. Compared with the prior art, the embodiment of the invention can greatly improve the connection firmness between the tooth and the implant, and has the advantages of adjustable abutment orientation, accurate alignment, simple structure and convenient operation.

The invention provides a highly reliable servo control driver. The driver comprises a shell, a control panel, a control panel support plate, a capacitance panel, a capacitance backboard, a power panel, a power panel backboard, a power amplifier board and a connector socket, wherein the shell is used for holding the control panel, the control panel support plate, the capacitance panel, the capacitance backboard, the power panel, the power panel backboard and the power amplifier board; the control panel support plate is used for supporting the control panel and carrying out strong and weak electricity isolation on the control panel, the capacitance panel, the power panel and the power amplifier board, the power amplifier board is arranged at the bottom of the shell, and the power panel backboard is used for supporting the power panel and is arranged on the power amplifier board; the capacitance panel backboard is used for supporting the capacitance panel, and the capacitance panel backboard is arranged at the bottom of the shell and the capacitance backboard and the power panel backboard are arranged in parallel, and the connector socket is arranged at one side wall of the shell. The highly reliable servo control driver provided by the invention has the advantages of being good in vibration resistance, strong in electromagnetic compatibility and high in reliability.

The invention discloses a steel scrap basket capable of increasing the utilization rate. The steel scrap basket comprises a basket body, a first bottom plate, a second bottom plate and a hoisting frame. The first bottom plate and the second bottom plate can be opened and closed. First gate plates are arranged on the two sides of the first bottom plate correspondingly, and the first bottom plate is in pin connection with the basket body through the first gate plates. Second gate plates corresponding to the first gate plates are arranged on the two sides of the second bottom plate correspondingly, and the second bottom plate is in pin connection with the basket body through the second gate plates. The hoisting frame is in pin connection with the basket body and comprises a mounting plate and two hoisting rods, the mounting plate is of a fan-shaped structure with the inner and outer portions being arcs, the inner diameter of the mounting plate is larger than the outer diameter of the basket body, the two hoisting rods are arranged on the mounting plate in parallel, and hoisting portions are arranged at the ends, away from the mounting plate, of the hoisting rods. The steel scrap basket capable of increasing the utilization rate is simple in structure, steel scraps in the basket can be completely thrown out, and thus the resource and energy utilization efficiency is improved.

The invention relates to a methanol tower reboiler with a fluid uniformly distributing function, for overcoming the conditions that in the prior art, fluid distribution inside and outside of a heating pipe is not uniform, and that a fluid flowing by a baffle plate is in a cross-flow state, so that the pressure loss is great, and vibration exists during the operation process. The methanol tower reboiler is characterized in that multiple stages of connected distributors are welded on the inner wall of a tube of an upper channel, ultra-thin deflecting fences and a steam distributing barrel with rectangular holes are welded on the inner wall of a shell side pipe bundle barrel, positioning rods are intersected horizontally and vertically and are welded to ultrathin support rings, so as to form rectangular spaces for positioning the heating pipe, each rectangular space of the ultra-thin deflecting fences and the heating pipe passing through the rectangular spaces form bevel edge concave arc triangular current flow gaps, the contact gaps between the rectangular spaces of the ultra-thin deflecting fences and the heating pipe are very small. The methanol tower reboiler has the beneficial effects that through the arrangement of the multiple stages of connected distributors, the flow state of the fluid inside the heating pipe is improved, and the purpose that the liquid is uniformly distributed in the heating pipe is achieved.

The invention discloses a cleaning device capable of cleaning river snail cracks. The cleaning device comprises a support mechanism for turning over the device, a cleaning mechanism for cleaning riversnail cracks and a rotating mechanism for extruding river snails; two bearings are welded on the inner wall of the support mechanism, and the inner wall of the support mechanism is fixedly connectedwith the rotating mechanism through the arranged bearings; a connecting rod is welded to the outer wall of the rotating mechanism, and the cleaning mechanism is welded to the outer wall of the rotating mechanism through the arranged connecting rod; each edge of a stirring barrel is in an arc quadrangle shape, in the rotating process of the stirring barrel, when the river nails rotate to the protruding positions from the concave positions of the stirring barrel, the river nails can move ceaselessly and rub each other; the radian of the stirring barrel is relatively small, so that the river nails cannot only be accumulated at the concave positions of the stirring barrel; and a spiral spring can swing around irregularly in the rotating process, the spiral spring is spiral, and the river nailsare also spiral, so that when the spiral spring passes through the outer surfaces of the river nails, dirt at cracks of the river nails can be cleaned more easily.

The invention discloses an oil filter nut disassembling and assembling wrench. The oil filter nut disassembling and assembling wrench is used for disassembling and assembling a nut, and relates to thetechnical field of production tools. The wrench comprises an arc-shaped clamping jaw, a torsion bar, a locking threaded sleeve and a wrench rod, one end of the torsion bar is connected to the arc-shaped clamping jaw, the other end of the torsion bar is connected to the wrench rod, and the middle is in threaded connection with the locking threaded sleeve. The wrench is designed according to a maintenance operation tool, spatial position extension is carried out on the wrench clamping jaw, operation in a narrow space is converted into a free state of an open environment, the problem of disassembly and assembly of the oil filter nut is effectively solved, the magnitude of fastening force of the oil filter nut is guaranteed, a new method is provided for disassembly and assembly of the oil filter nut, and the nut which is positioned in a narrow space and has a plurality of obstacle interference parts is conveniently and quickly disassembled, so that the labor intensity is greatly reduced,the assembly efficiency is improved by multiple times, and the assembly quality is stable and reliable.

The invention discloses a flexible vertical pipe and an interlaced tensile armor layer thereof. The interlaced tensile armor layer comprises an inner tensile armor layer and an outer tensile armor layer, wherein the inner tensile armor layer and the outer tensile armor layer are interlocked and connected into a whole in an interlaced symmetric winding manner; and the inner tensile armor layer andthe outer tensile armor layer respectively rotate, extend and wind at a certain spiral angle along clockwise and anticlockwise directions. The orthogonally-interlaced tensile armor layer is lower in material consumption and simple in structure, the structural strength of the orthogonally-interlaced tensile armor layer is improved on the premise of no addition of other materials, and the orthogonally-interlaced tensile armor layer has good practicability and economical efficiency.

The invention provides a battery module with a heating film. The battery module is applied to the technical field of new energy automobile battery packs and comprises a module support (1), wherein a plurality of battery cells (2) are clamped in the module support (1) and form a battery module body (3), a plurality of busbars (4) are arranged on the battery module body(3), the heating film (5) is arranged on the battery module body(3), and the heating film (5) is a structure clamped between the busbars (4) and the module support (1). According to the battery module with the heating film, the arrangement thought and the structure of the heating film are changed, so that when a battery pack works, the battery cells can be uniformly heated, the safety and the endurance mileage of a new energyautomobile battery are guaranteed, the service life of the battery pack is prolonged, the problem that a battery pack cannot be charged and discharged at a low temperature or the charge-discharge rateis low in the prior art is solved, and the overall performance of the battery pack is improved.

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 three-dimensional track conveying type tool magazine. The three-dimensional track conveying type tool magazine comprises a mounting bracket, wherein a mounting plate is arranged on the right side of the rear portion of the upper end of the mounting bracket, and a mounting seat is arranged at the upper end of the mounting plate; a support is arranged on the front portion of the upper end of the mounting seat and is of an L-shaped structure, and a servo motor is arranged on the front portion of the upper end of the support; the output end of the servo motor penetrates through the front portion of the lower end of the support and is provided with a driving gear, and one side of the driving gear is in transmission connection with a transmission rack; two sets of sliding blocks are arranged on the front portion of the lower end of the support and distributed front and back, and the lower ends of the two sets of sliding blocks are both slidably connected with sliding rails; a sliding table is arranged at the lower ends of the two sliding rails, and the sliding table is located above the mounting bracket; and the transmission rack is located between the two sliding rails and arranged at the upper end of the sliding table. According to the three-dimensional track conveying type tool magazine, various different manufacturing modes can be achieved, the movement noise is low, and the transmission load is small.

The invention discloses a porcelain-casing golden-liner LED lamp. A radiating lamp casing is made of porcelain, an LED light source is installed at the bottom of an embedded inner metal liner, slots on the periphery of the inner metal liner are in a reed shape, and the inner metal liner is closely attached to the inner wall of the porcelain lamp casing through the reed deformation, so that heat of the LED light source is quickly transferred to the porcelain lamp casing. By the aid of the excellent electrical insulation characteristic of porcelain, the power utilization safety of an LED bulb is guaranteed, at the same time, the inner metal liner which is made of a metal material and is closely attached to the inner wall of the porcelain lamp casing can reduce thermal resistance and improves the overall radiating effect, and the power utilization safety and the high-efficiency radiation of the LED bulb can be achieved. The LED lamp has the advantages that the bulb is safe to use, the radiating effect is satisfying, the structure is compact, the process is simple, the porcelain process is provided with eastern romantic charm, the cost is low, and LED illumination lamps can be popularized.