69results about How to "Limit offset" patented technology

The invention relates to a balancing gear noise preventing device of a engine crankshaft, the balancing gear includes a master gear, an auxiliary gear and a torsion spring, which is nested on a balancing shaft, characterized in that the torsion spring is provided between the master gear and the auxiliary gear, the master gear is provided at least a flange seat and a fixing hole, the auxiliary gear is provided at least one through hole, which is fitly nested in the flange seat, thus, the auxiliary gear can be rotating on the flange seat of the master gear. A limitation column is provided inside the through hole of the auxiliary gear, lower part of the limitation column is fixed in the fixing hole of the master gear, offset of the auxiliary gear is limited with a gap kept by the upper part of the limitation column and the through hole of the auxiliary gear. By employing said mechanism, components of the balancing gear noise preventing device can be reduced, and the assemblage is simplified.

The invention relates to the technical field of underground space construction, and discloses a pipe curtain construction method based on pipe banks. According to the pipe curtain construction method based on the pipe banks, the pipe banks are used as the construction unit and jacked at the same time for constructing a pipe curtain structure, each pipe bank is formed by arranging a set of steel pipes side by side, every two adjacent steel pipes are connected through a connecting component, and the number of the steel pipes in each set is not smaller than two. By adoption of the pipe curtain construction method based on the pipe banks, the construction efficiency is high, the jacking tendency can be controlled highly, jacking deviation can be rectified easily, and the construction precision is high.

The invention discloses a solenoid valve with a long service life. The solenoid valve comprises a valve seat, a coil rack arranged on the valve seat and a valve cover arranged on the coil rack in a covering mode and connected to the valve seat. The valve seat is internally provided with a buffer cavity communicating with an inner cavity of the coil rack and further internally provided with a liquid inlet pipe and a liquid outlet pipe which communicate with the buffer cavity, and the liquid inlet pipe and the buffer cavity communicate through a through hole formed opposite to an inner cavity ofthe coil rack; a coil is wound outside the coil rack, and an iron core is slidably arranged inside the coil rack; the end, close to the through hole, of the iron core is fixedly provided with a valvecore, and the end, close to the valve cover, of the iron core is fixedly provided with a first permanent magnet; and a second permanent magnet which is repellent to the first permanent magnet is fixedly arranged at the top of an inner cavity of the valve cover. According to the solenoid valve with the long service life, a spring in a traditional solenoid valve is simplified so that the structureof the solenoid valve can be simple, the situation that the solenoid valve is used for long time, then a spring is prone to deforming, and the service life of the solenoid valve is affected accordingly does not exist, and thus the service life of the solenoid valve is greatly prolonged.

The invention discloses a micro drill and a manufacturing method thereof. A micro drill comprises two main cutting edges, each main cutting edge being correspondingly provided with a major first flank and a major second flank, which are characterized in that the intersecting line of the major first flank and the major second flank deviates from the axial position of the drill; two said flank faces extend to the drill axial position to form two core edge faces, the core edge faces intersecting at the drill axial position to form chisel edge which is a line segment, and two drill tip core edges are formed on the side that the two core edge faces intersect with the corresponding main cutting edges. The invention improves cutting efficiency, lessens wear on the drill, and also can improve the positioning performance of the drill.

The invention relates to a vertical circulating type bicycle parking device and belongs to the technical field of bicycle parking. The vertical circulating type bicycle parking device comprises a frame and a bicycle rack group and is characterized in that a chain positioning rail is vertically arranged and connected with the inner wall of the first lateral wall of the frame, a first sprocket is arranged in semi-sealed circular hole in the upper portion of the chain positioning rail, a second sprocket is arranged in a semi-sealed circular hole in the lower portion of the chain positioning rail,the first sprocket and the second sprocket are connected with a chain, one side, away from the first lateral wall of the frame, of the chain positioning rail is provided with a semi-sealed rail, thesemi-sealed rail is parallel with the chain positioning rail, and identical first sprocket, second sprocket, chain, chain positioning rail and semi-sealed rail are symmetrically arranged on the innerwall of the lateral wall, opposite to the first lateral wall, of the frame. The vertical circulating type bicycle parking device has the advantages that the device combines intelligent control and themechanical device, double-access bicycle parking and taking is achieved, and high space utilization rate and use safety are achieved.

The invention relates to an electrical household appliance for hot food preparation, comprising a tank (5) having a bottom (14) and a side wall (15), and also a blade (6) that is driven in rotation in the tank (5), the blade (6) having a lower arm (62) that extends above the bottom (14) of the tank (5), the lower arm (62) comprising a turned-up end (64) that forms a peripheral passage (70) with the side wall (15) of the tank (5). - According to the invention, the peripheral passage (70) has an upper narrowing (71).

The invention discloses a wire stabilizing and stripping machine, relates to a wire stripping device, and aims to solve the problem of deviation during cable cutting. The machine comprises a support,an upper clamping roller and a lower clamping roller which are rotationally installed on the support, a driving mechanism arranged on the support, and a wire stabilizing mechanism; the wire stabilizing mechanism comprises a lower wire roller rotationally installed on the support, an upper wire roller arranged on the support in a lifting mode, and a lifting assembly arranged on the support and usedfor adjusting the upper wire roller to ascend and descend;and each of the upper wire roller and the lower wire roller comprises a wire roller shaft and a wire stabilizing sleeve column mounted on thewire roller shaft, the circumferential side wall of each wire stabilizing sleeve column is sunken inwards to form a waist drum-shaped structure, and an arc-shaped wire clamping opening is formed between the upper wire roller and the lower wire roller. The wire stabilizing and stripping machine has the following advantages and effects that the upper wire roller and the lower wire roller can clampa cable, deviation of the cable in the cutting process is limited, the cable can be aligned with the blade all the time, and therefore, the cable can be cut stably and accurately.

The invention discloses an unmanned aerial vehicle path planning method taking laser scanning as a constraint. The method comprises the following steps: 1, setting a position of an unmanned aerial vehicle at a moment t to be (x(t),y(t),z(t)) and a speed of the unmanned aerial vehicle to be v(t), and establishing an expression for a flight d of the unmanned aerial vehicle and an expression for an unmanned aerial vehicle planning cost function; 2, defining a detection interval between two pole towers as a rectangular solid; 3, inputting starting point coordinates and end point coordinates duringunmanned aerial vehicle path planning, and performing path planning by using a fast search tree algorithm; and 4, outputting a planned path result. The method disclosed by the invention solves the effectiveness problem of the laser scanning of the unmanned aerial vehicle, the problem that a planned path can not achieve global optimum as a local path planning method is adopted in the unmanned aerial vehicle path planning and the problems that an algorithm is relatively complex and a global planning method is not applicable to a region lack of geographical environmental information as the global planning method needs detailed geographical environmental information support.

The invention discloses a novel all-dimensional twisting energy dissipation damping supporting seat. The novel all-dimensional twisting energy dissipation damping supporting seat includes a base and atop seat, the base is provided with at least three energy dissipation supporting columns, the energy dissipation supporting columns are provided with limiting parts which are connected with the base,and the energy dissipation supporting columns are connected with connecting parts which are rotatably provided with sliding blocks in a connecting mode; each of the sliding blocks is suitably matchedwith a corresponding sliding groove, the sliding grooves are connected at the lower surface of the top base, and the sliding blocks can slide in correspondence with corresponding sliding grooves; andthe sliding grooves are located at the same plane, at least two sliding grooves are not mutually parallel, and the energy dissipation supporting columns are mild steel members. According to the novelall-dimensional twisting energy dissipation damping supporting seat, the principle of a traditional supporting seat energy dissipation due to friction can be broken, deformation capability of materials can be fully played, earthquake kinetic energy amount can be effectively consumed, the blindness and the directionality in present designing and installing process can be avoided, the energy dissipation effect of the supporting seat is improved, and the entire anti-quake performance and safety of a structure can be improved.

The invention discloses a water photovoltaic anchorage system suitable for large-variation and high-flow-velocity waters and a design and construction method of the water photovoltaic anchorage system. The water photovoltaic anchorage system comprises pipe piles arranged in the waters around a photovoltaic array, wherein the pipe piles are provided with position-limiting pulley assemblies; and theposition-limiting pulley assemblies are connected with steel supports arranged outside the photovoltaic array by anchor ropes. The position-limiting pulley assemblies are arranged at the surface of the pipe piles, so that the anchor ropes which connect the pipe piles with the photovoltaic array are always in the horizontal direction and rise and fall along with the variation of the water level. The water photovoltaic anchorage system is capable of adapting to the large variation of the water level without the need for a large amount of anchor ropes and avoiding instability of the water photovoltaic anchorage system caused by the variation of the water level. The water photovoltaic anchorage system suitable for the large-variation and high-flow-velocity waters has the advantages of uniformstress on a floating body and small vibration and deflection of the photovoltaic array and is applicable to the waters with large variation in the water level and high flow velocity. The water photovoltaic anchorage system can still effectively ensure the overall stability of a water photovoltaic power station under harsh environmental conditions.

The invention relates to a limiting and contraction distortion compensating plate spring pre-tightening structure for a pressure-resistant body of a deep sea submersible vehicle. The pressure-resistant body is included; the outer circumferential surface of the pressure-resistant body is sleeved with a non-pressure-resistant structure in a spaced mode; one end of the non-pressure-resistant structure extends to form a non-pressure-resistant structure inner surface plate; the plane of the non-pressure-resistant structure inner surface plate is parallel to the outer surface of the pressure-resistant body; and a plurality of pre-tightening assembling bodies are mounted between the outer circumferential surface of the pressure-resistant body and the non-pressure-resistant structure inner surface plate. The plurality of pre-tightening assembling bodies are mounted between the pressure-resistant body and the non-pressure-resistant structure inner surface plate, thus pre-bending of both wings of a plate spring exerts pre-tightening force on the pressure-resistant body for compensating for the radial contraction distortion of the pressure-resistant body in a submergence process, the rigidity of a whole structure is improved through limiting sleeves and pre-tightening bolts, and distortion of the pressure-resistant body under the action of eccentric load is limited.

The invention relates to a track for a high-temperature super-conductivity magnetic levitation transport system. The track is symmetrically distributed with a permanent magnet (1) and a poly-magneticpole (2) at two sides of a datum line (L); the bend part of the track is transversely added with 1-5 columns of auxiliary permanent magnets (1') at the outer side of the datum line (L); when the magnetic levitation transport system makes a turn, the track can produce an enough guide restoring force directing towards the inner side for the magnetic levitation transport system so as to prevent the magnetic levitation transport system from being eccentric and escaping from the track and to guarantee the safe and reliable operation of the magnetic levitation transport system; besides, the track for a high-temperature super-conductivity magnetic levitation transport system has less investment and low cost. Compared with the existing translational symmetric track, the track for a high-temperature super-conductivity magnetic levitation transport system has good compatibility and provides convenience to the reconstruction and upgrading of the existing track.

The invention discloses a puncture positioning device which comprises a guide rail and a puncture needle. The puncture needle is parallel to the guide rail, a clamping mechanism is slidably arranged on the guide rail and comprises a base and a cover plate, the cover plate covers the base, and a needle groove is formed in the top surface of the base along the length direction of the base in an embedded manner. The puncture positioning device has the advantages that needle penetration points, needle penetration angles and puncture distances can be determined by the aid of the puncture positioning device, accurate human interventional therapy can be carried out, errors due to the traditional experiential puncture can be prevented, accordingly, the surgical success rate can be increased, the surgical accuracy can be improved, and the puncture positioning device is convenient to use and high in efficiency and is safe.

The invention discloses a board locating and carrying device comprising a machine frame, a board carrying mechanism arranged on the machine frame and a transverse driving mechanism driving the board carrying mechanism to move. The board carrying mechanism comprises an installation frame, a suction cup assembly arranged on the installation frame, at least two locating assemblies and a vertical power mechanism driving the suction cup assembly and the locating assemblies to conduct vertical movement. The suction cup assembly comprises multiple suction cups. Each locating assembly comprises a locating piece used for locating a locating hole portion of a board. Each locating piece is provided with a receding groove used for avoiding a locating pin, penetrating through the locating hole, on theboard holding platform. The bottom face of each locating piece is further provided with suction holes used for sucking the portion, around the locating hole, of the board. The board locating and carrying device is adopted before smart card machining and manufacturing and accurately locates the board used as the raw material in the carrying process, so that locating of the board on the two stationsbefore and after carrying is accurate, and the product yield is improved.

The invention relates to the technical field of shoes, and discloses a shoe sole pressing device, comprising a pressing frame, the left and right sides of the bottom of the pressing frame are fixedly connected with fixing frame feet, and the left and right sides of the inner bottom wall of the pressing frame are fixedly connected. Both sides are fixedly connected with hydraulic telescopic rods, the interior of the pressing frame is provided with a horizontal plate, the top ends of the two hydraulic telescopic rods are fixedly connected with the horizontal plate, and the left and right sides of the horizontal plate are connected with the pressing plate. The inner side walls of the frame are in contact. In the shoe sole pressing device, the sole body can be placed inside the placing groove through the placing groove, the rubber pad can effectively protect the bottom of the sole body from being damaged during the pressing process, and the piston cylinder can effectively prevent the sole body from being under too much pressure. , Effective cushioning force, the limit plate and the limit rubber block can effectively protect the left and right sides of the sole body from being compressed and deformed during the extrusion process, so that the sole pressing is more complete, and the success efficiency of pressing the sole is further improved.

The invention discloses a reinforcement production line for a prefabricated bottom plate of a large-span laminated slab. The reinforcement production line comprises a reinforcement manufacturing device, a reinforcement welding device and a reinforcement binding platform, wherein the reinforcement manufacturing device comprises a machine body; clamping plates are horizontally and oppositely arranged on the machine body; the clamping plates comprise a first clamping plate and a second clamping plate; pull rods are arranged on the side walls, which are relatively close to each other, of the firstclamping plate and the second clamping plate; the other sides of the first clamping plate and the second clamping plate are connected with the machine body through telescopic mechanisms capable of horizontally moving; one ends of the pull rods are movably connected to the inner walls of the first clamping plate and the second clamping plate correspondingly; clamping mechanisms are arranged at theother ends of the pull rods; the plurality of pull rods on the first clamping plate and the plurality of pull rods on the second clamping plate are arranged in a staggered and spaced mode; the ends,provided with the clamping mechanisms, of every two adjacent pull rods are hinged through connecting rods with equal length; the section of the reinforcement welding device is an inverted-V-shaped welding frame; the reinforcement binding platform is square; and limiting grooves are formed in the upper end of the periphery of the reinforcement binding platform at equal intervals. The invention aimsto bend a steel bar into a continuous V shape at one time through the production line, so that subsequent reinforcement manufacturing and cage binding are facilitated, and the efficiency is improved.

The invention discloses a paperboard stacking machine with an automatic counting and staggered stacking mechanism. The paperboard stacking machine comprises a conveying device and a stacking machine body, wherein the conveying device internally comprises a fixing frame, and the front end of the fixing frame is fixedly connected with a motor; the output end of the motor penetrates the front end ofthe fixing frame and extends to the inner side of the fixing frame, and the output end of the motor is fixedly connected with a driving roller; the outer side of the driving roller is fixedly connected with a driving wheel; the inner side of a belt is movably connected with a driven wheel, and the inner side of the driven wheel is fixedly connected with a driven roller; the driven roller is rotationally connected with the driving roller and the fixing frame; the upper end of the fixing frame is fixedly connected with a pressing mechanism; and the stacking machine body is movably connected to the right side of the conveying device. According to the paperboard stacking machine with the automatic counting and staggered stacking mechanism, paperboards of various thicknesses can be stacked as awhole, the overall functionality and practicability are improved, the paperboards at the upper ends of stacking plates can be staggered conveniently, and meanwhile the number of the overall stacked paperboards can be recorded conveniently.

The invention relates to an installation method of a pipeline bridge crossing a canyon. The method comprises the steps of 1, surveying and setting-out, wherein a crossing line is determined on a canyon cross section, positions of left and right bridge piers at left and right banks of the canyon are determined, and the left and right bridge piers are located at the crossing line; 2, pouring the left and right bridge piers at the left and right banks of the canyon, wherein pipeline bridge connecting built-in fittings are anchored at the tops of the left and right bridge piers respectively; 3, determining a sending line parallel to the crossing line at the front side or rear side of the crossing line, wherein the center distance between the sending line and the crossing line is 1.2-1.5 folds of the width of the pipeline bridge; 4, manufacturing the pipeline bridge at the left bank of the canyon and mounting a sending device in the middle of the canyon bottom of the canyon, wherein both the pipeline bridge and the sending device are located at the sending line; 5, making the pipeline bridge cross the canyon along the sending line; 6, transferring the pipeline bridge horizontally with a crane to the crossing line and fixing the pipeline bridge on the left and right bridge piers. According to the installation method of the pipeline bridge crossing the canyon, pipeline bridge crossing can be completed in canyon areas where there is no heavy cranes, and the method is short in construction period, low in manufacturing cost and high in safety.

The invention discloses a lumbar and dorsal muscle function exercising device. The device comprises a frame, a supporting frame horizontally fixed in the frame, a soft cushion placed on the top face of the supporting frame, lifting mechanisms fixed to the frame and a control device electrically connected with the lifting mechanisms. The lifting mechanism comprises a first sliding block, a fixed pulley, a steel wire, a supporting belt, a rolling and pulling shell, a winding drum, a motor and a second sliding block. The first sliding block and the second sliding block are fixed to a first crossrod and a second cross rod located at the upper ends and the lower ends of the two sides of the long edge of the frame in a sliding mode respectively. The fixed pulley is fixed on the bottom surface of the first sliding block. The rolling and pulling shell is fixed on the top surface of the second sliding block. The motor is located in the rolling and pulling shell, an output shaft of the motor isconnected with the winding drum, one end of the steel wire is fixed to the winding drum, the other end of the steel wire penetrates through the fixed pulley and then is connected with the supportingbelt. The device is suitable for various different lumbar muscle and dorsal muscle exercising actions, human body parts can be assisted in lifting, and therefore the difficulty of the lumbar muscle and dorsal muscle exercising actions is reduced.

The invention discloses a pneumatic anchor rod drilling machine operation positioning device and method for geotechnical engineering. The device comprises a square base and a square seat, wherein a top surface of the square base is provided with a supporting platform, a first electric push rod, a first shear type lifting platform and a second electric push rod; the first shear type lifting platform is connected with a positioning plate which is provided with a positioning hole; the square base is provided with a first circular groove; a top end of the first electric push rod is provided with alimiting plate, and the top end of the second electric push rod is provided with a first supporting plate which is in contact with the limiting plate; the limiting plate is provided with a pluralityof limiting holes; the square seat is fixedly arranged on a second shear type lifting platform; the square seat is connected with a second supporting plate which is provided with a second circular groove; the other side of the square seat is fixedly provided with a third electric push rod, and the top end of the third electric push rod is hinged with a third supporting plate through a spherical hinge; and a fourth electric push rod and a fifth electric push rod are hinged on two sides of the square seat through spherical hinges.

The invention relates to the technical field of medical instruments, and discloses a nursing bed for the cardiology department. The nursing bed comprises a bottom plate; the bottom face of the bottomplate is fixedly connected with supporting legs, and the nursing bed is characterized in that the bottom plate is provided with a rotating mechanism and an overturning mechanism; the bottom plate is provided with a wheelchair guiding mechanism, a wheelchair moving-up mechanism and a wheelchair tilting mechanism; the rotating mechanism includes a transverse plate I, a bed board and a rotating disc;the transverse plate I is movably connected with the bottom plate. The circumferential face of the rotating disc is turned to the left side wall of the bottom plate; a patient with leg disability isslid to the upper surface of the rotating disc from a wheelchair; the rotating disc is rotated, so that the circumferential face of the rotating disc is rotated to be attached to the bed board, so that the examined patient is rotated to be parallel to the bed board from a direction perpendicular to the bed board, and thus, manual holding of the patient is replaced; the patient sitting on the edgeof the bed board is moved to be parallel to the bed board, so that the working intensity of a medical worker is reduced, damage caused to the lumbar vertebrae of the medical worker by the weight of the patient when the medical worker bends down to lift the patient to turn is reduced, and the health of the medical staff is protected.

The invention relates to a device for driving a shuttle (1, 1') that can be moved in the reed (17) of a circular loom along a circular orbit (16) without contact, comprising at least one permanent magnet (29, 29') on the shuttle (1, 1') and at least one magnet (22, 22') that is operatively connected to the at least one permanent magnet (29, 29') of the shuttle (1, 1') and that is arranged on a drive element (10) that can be moved concentrically to the orbit (16) of the shuttle, wherein an air gap (11) is formed between the shuttle (1, 1') and the drive element (10). The at least one permanent magnet (29, 29') of the shuttle (1, 1') and the at least one magnet (22, 22') of the drive element (10) are polarized in such a way that the at least one permanent magnet of the shuttle and the at least one magnet of the drive element mutually attract each other by means of magnetic forces and thus form a magnetic attraction section (14).

The invention discloses a transferring method for machined workpieces. The transferring method comprises a transferring cart (1), a sleeve (2), a sleeve column (3) and a rotating disk (4). At least one rotating handle (9) is arranged on the side face of the rotating disk (4). A workpiece storage device is arranged on the top of the rotating disk (4). According to the transferring method for the machined workpieces, the rotating handles drive the rotating disk, and therefore the position of the workpiece storage device is adjusted, and resources are reasonably allocated and utilized; two rolling wheels are arranged on the workpiece storage device, friction force between the workpieces and the workpiece storage device can be reduced, and damage of the workpieces is effectively avoided; a limiting structure arranged on the top of the sleeve column can effectively limit shaking, skewing and even overturning of the sleeve column and can also transfer the gravity of part of the workpieces to the sleeve, pressure of the sleeve column to the transferring cart is reduced, and the pressure intensity received by the transferring cart is reduced.

A lamination buffering device for a permanent magnet rotor of a neodymium-iron-boron permanent magnet synchronous motor comprises a pressure head, an upper sliding base, a lower sliding base, an external expansion mechanism and a second-stage buffer mechanism. The pressure head is arranged on the top of the upper sliding base; the lower sliding base is arranged under the upper sliding base; and the top center of the lower sliding base is provided with the external expansion mechanism. The external expansion mechanism comprises a cylindrical body, conical heads, a pressure rod, push pieces, external expansion pieces and a reset spring. The second-stage buffer mechanism comprises a buffer base, a first-stage buffer guide rod, a second-stage buffer guide rod, a first-stage limit column, a second-stage limit column, a buffer spring and a buffer rubber column. Through cooperation of a punch rod and the external expansion mechanism, limit of multilayer silicon steel sheets during laminationof the rotor silicon steel sheets is realized to prevent deviation and inner wall deformation; through the second-stage buffer mechanism, the pressure on the silicon steel sheets is changed slowly, and the stress process is prolonged, so that the deviation is further reduced, and the lamination effect is improved; and the lamination buffering device is worth wide promoting.

The invention relates to the field of advertising equipment, and provides a lamp box, which comprises a back plate, a piece of lamp cloth, a lamp box outer frame, a lamp body fixing component and a fixing component. The lamp box outer frame comprises a plurality of frame edge components, each frame edge component comprises a frame edge strip and a side cover, the frame edge strips are sequentiallyconnected end to end and surround to form a closed frame edge strip used for installing the back plate, and the side cover is arranged on the outer side of the frame edge strip; on one hand, a mounting part and a protruding part are formed on the surface of the frame edge strip facing the back plate, and two ends of a lamp body inserting plate of the lamp body fixing component respectively abut against two frame edge strips, so that the back plate is effectively limited from moving and shifting, the stability of the position of the back plate is guaranteed, the rigidity and a anti-collision performance of a whole back plate are improved; on the other hand, the lamp cloth is stretched and fixed in a containing cavity between the frame edge strip and the side cover by arranging the fixing component, so that a reliable installation of the lamp cloth is guaranteed; and meanwhile, the lamp cloth can be disassembled and assembled by turning over the side cover, so that a maintenance is convenient, and the maintenance cost is low.