165results about How to "Combination structure is simple and feasible" patented technology

The invention relates to the technical field of bean milk machines, in particular to a bean milk machine with a hand-mill stirrer. The bean milk machine with the hand-mill stirrer comprises a main body, a base and a charging frame, wherein the main body is connected with a handle, the base is provided with an electrical heating element, and a stirring device is arranged on the charging frame and comprises a milling barrel in which a cavity is arranged; a worm is arranged in the cavity, the circumferential surface of one end of the worm is provided with spiral milling grains, and the other end is provided with a rocker arm; and a part on the bottom of the milling barrel, which corresponds to the spiral milling grains, is also provided with milling grains, and the bottom and the middle of the milling grains on the bottom of the milling barrel are provided with bean milk outlets. The bean milk machine with the hand-mill stirrer has the advantages that the structure has relatively low cost and saves energy by adopting the mechanical stirring device, thereby enduing the product with high cost performance; the technology of the traditional heating mode is mature and is relatively low-cost, thereby being applicable to general consumer groups; and the structure has simple combination mode, less components and integral design of most of components, such as the stirring device, and the bean milk machine can be cleaned by a user through only a few of steps.

The invention discloses an optical fiber sensor combination for monitoring the corrosion of reinforced concrete. The optical fiber sensor combination comprises an optical fiber sensor and a compensation sensor, wherein the optical fiber sensor and the compensation sensor comprise reinforcing steel bar elements, reinforced fiber glass reinforced plastic support bases, optical fiber Bragg gratings and connecting optical fibers, protective sleeves, silicon sheets, reinforcing steel bar coating regions, reinforcing steel bar un-coating regions, and mortar housings, wherein the reinforcing steel bar elements of the optical fiber sensors are reinforcing steel bars to be tested, and the reinforcing steel bars of the compensation sensor are 316L stainless steel bars. According to the optical fiber sensor combination, a reaction force of mortar is counteracted to a certain extent, the local corrosion of the reinforcing steel bars is favorably monitored, and the sensitivity of monitoring is improved. The compensation sensor is made by adopting a manner of replacing common reinforcing steel bars by 316L stainless steel, and is simple in principle and convenient to operate. The optical fiber sensor combination is simple in structure, convenient to manufacture, low in cost, good in sensitivity, high in accuracy, strong in anti-electromagnetic interference, high in reliability, good in durability, and high in stability, and is suitable for monitoring the long-term durability of reinforcing steel concrete structures such as saline and alkaline land, seawater and deicing salt under multiple environments.

The invention discloses a brake block assembly used on a brake. A base frame is arranged in the brake block assembly. The base frame comprises an upper portion, a middle portion and a lower portion. Grooves are formed in the two edges of the upper portion of the base frame. Sliding guide grooves are formed in the inner walls of the two sides of each groove. Sliding blocks are installed in the grooves. The sliding blocks and the grooves are slidably connected through the sliding guide grooves. A brake block is connected to the lower portion of the base frame. Two push rods are arranged in the brake block. The brake block is elastically connected with the base frame through springs. The brake block assembly used on the brake is simple in structure, convenient to disassemble and assemble, stable and reliable in work, capable of achieving single-side braking and double-side braking, more sensitive in response, high in braking speed, and capable of achieving brake relief automatically. The invention further provides an automatic detection system and method of the brake block assembly used on the brake. By the adoption of the automatic detection system and method of the brake block assembly used on the brake, the temperature and the abrasion degree of the brake block can be monitored in real time in the traveling process of a vehicle, an alarm is given when detection data are abnormal, and the situation of brake failures is effectively avoided.

The invention discloses a hybrid current collector used for lead storage batteries, which is characterized in that the hybrid current collector comprises at least one conducting framework and a shaping framework, the conducting framework is molded in a hybrid form, the shaping framework is manufactured by lightweight hard materials, and the hybrid current collector is a grid plate with hollow grids or a plate-shaped current collector without grids. The hybrid process of the conducting framework and the shaping framework includes injection molding and joggle fixing molding, wherein the injection molding utilizes thermal plastic and cold extrusion or uses cement concrete, the joggle fixing comprises steps of utilizing the lightweight hard material to manufacture a substrate module which is used as the shaping framework and then joggling and fixing the shaping framework with the conducting framework which is designed as a coupling module. The conducting framework of the current collector can extend to form an integrated lead electrode or is electrically fixedly connected with a split lead electrode. The polar plate manufactured by utilizing the current collector is light in weight, high in specific energy, simple in manufacture and low in material cost.

The invention discloses a jet self-sucking centrifugal water pump. The pump comprises a pump body, a nozzle, a diffuser, an impeller, an inner pump cover, a guide blade, an outer pump cover, a pump shaft, a bracket and a motor, wherein the motor is directly connected with the bracket; the pump shaft is coaxially connected with the motor; the impeller is arranged at the end of the pump shaft; two sides of the impeller are provided with a centrifugal pump chamber structure through matching of the outer pump cover, the guide blade and the inner pump cover; the opened end of the pump body is connected with the outer pump cover in a sealed mode, so that a centrifugal pump chamber is accommodated in the pump body; axial through holes are uniformly distributed on the end face of the inner pump cover and communicated with a water outlet cavity of the pump body; the diffuser is connected between the inner pump cover and a clapboard in the sealed mode; the end of the diffuser, which is positioned at one end of a water sucking port, is coaxially provided with the nozzle to form a jet pump structure; and the outlet of the diffuser is positioned at the inlet of the impeller. A jet pump and a centrifugal pump are integrated to achieve performance complementation; the jet pump helps the centrifugal pump to self-suck, the self-sucking process is short, and self-sucking capability is high; andthe pump has an integrated structure and is not required to be additionally provided with a self-sucking device, so that matching cost is saved, and the pump is particularly suitable to be used as a marine pump.

The invention belongs to the field of petroleum engineering and particularly relates to a deviation-preventing and fast-drilling drilling assembly. The deviation-preventing and fast-drilling drilling assembly comprises a drill bit, an eccentric deviation lever structure pup joint, a drill collar and a centralizer. The drill bit, the eccentric deviation lever structure pup joint, the drill collar and the centralizer are sequentially connected through threads. The deviation-preventing and fast-drilling drilling assembly is simple in structure and stable in performance, and no risk in other aspects is caused to drilling operation in the using process; organic unity of push type deviation prevention and directional deviation prevention is achieved, and the deviation prevention effect is excellent; the deviation prevention effect is more obvious when bit pressure is high, the bit pressure can be released, performances are not subject to influences of shaft bottom conditions, and the deviation-preventing and fast-drilling drilling assembly is favorable for improvement of the drilling speed; and the deviation-preventing and fast-drilling drilling assembly not only can be used for deviation correction, but also can be normally used for vertical shaft drilling and is wide in applied range.

The invention discloses a micrometer for measuring over-ball distance between an external gear and external spline, which is composed of a micrometer, measuring heads and a snap ring, wherein each measuring head is composed of a spherical measuring head, an intermediate transition shaft and a pin shaft; the pin shaft sections are respectively inserted into pinholes of measuring anvils at both ends of the micrometer; and the measuring end of each measuring head is a sphere with the standard diameter of Phi2mm-Phi50mm. The measuring heads are used in pairs; the diameters and tolerance zones of the spherical measuring heads are equal; and the distances between the end surfaces of the measuring anvils and the sphere centers of the spherical measuring heads are equal. After being installed in position, the measuring heads are adjusted to zero and then directly used for measuring the over-ball distance. The micrometer provided by the invention fully utilizes the length precision metering mechanism of a commodity micrometer for metering, has the advantages of simple composite structure and accurate measurement, is convenient in measurement operation, and is especially suitable for being used as an on-line measuring tool for production.

The invention belongs to the technical field of buildings, in particular a wavelike steel webplate shear wall structure, comprising a wavelike steel webplate and reinforced concrete beam columns arranged at the two ends of the wavelike steel webplate. 50-500 micrometer roughness is prepared on the surface of the wavelike steel webplate; the wavelike steel webplate and a steel plate arranged in each reinforced concrete beam column are welded together, and the wavelike steel webplate is vertical to a plane in which the steel plate is located; rivets are arranged on the steel plate and completely cast in the reinforced concrete beam columns. In the invention, the wavelilke steel webplate is adopted to replace a reinforced concrete wall at the original position, thereby reducing the dead weight of a building and the foundation material consumption, greatly improving the earthquake resisting capacity of the building, remarkably improving the space utilization rate of the houses and improving the buildable height of the building. The combined structure of the wavelilke steel webplate shear wall has the advantages of easy manufacture and on-site construction as well as higher structure integrity, shear resisting capability, rigidity and antifatigue property.

The invention discloses a mooring rope reeling and unreeling guiding device which is composed of an idler wheel assembly and a bearing assembly, wherein the idler wheel assembly is of a double-wheel structure and comprises idler wheels, a lining, wallboards and a shaft, the bearing assembly comprises an outer ring, a bolt, a pressing plate, an inner ring and steel balls, the inner ring is sleeved in the outer ring of a circular sleeve structure in a coaxial mode, an annular groove is formed in the outer circle edge, close to the inner ring, of the inner side of the left side of the outer ring, the steel balls are arranged in the annular groove in sequence, and the pressing plate is connected to the right end face of the outer ring through the bolt so as to adjust the matching between the inner ring and the steel balls. The mooring rope reeling and unreeling guiding device is characterized in that the idler wheel assembly is fixedly connected in the inner hole of the inner ring through the wallboards on the two sides, a ribbed plate is fixedly connected between the middle portion of one side of each wallboard and the inner ring, and the ribbed plates and the wallboards on the two sides are arranged in a cross-shaped mode to form a structure in which the idler wheel assembly rotates along with the inner ring. The mooring rope reeling and unreeling guiding device is simple in structure, easy to manufacture, and saving in time and labor.

The invention relates to the technical field of tower crane construction, in particular to a real-time monitoring and early warning system and method of a tower crane. According to the real-time monitoring and early warning system and method, various parameters of the tower crane are collected in real time; a sensor assembly comprises a pressuremeter-type sensor and a position acquisition device;the various parameters collected by the sensor assembly in real time are transmitted by a communication assembly to a cloud processor; the cloud processor processes according to the various parametersto obtain a processed result, and transmits the processed result to a mobile terminal; and the processed result is visually displayed through the mobile terminal. Preferably, a whole anti-collision method is clear, and the data processing method is designed creatively, so that the anti-collision method is simple and convenient for operation and fast in processing; and the specific collision condition and position between the tower cranes can be accurately judged, so that in-time and effective adjustment of the operation of the tower crane is facilitated and the occurrence of safety accidentsis prevented.

The invention relates to a dust remover, which comprises an upper tank body and a middle tank body. The upper tank body comprises a waste gas inlet channel and a gas purification chamber, wherein the waste gas inlet channel is a sealed channel, and a waste gas inlet is arranged at the upper portion of the waste gas inlet channel. The space in the upper tank body except the waste gas inlet channel is treated as the gas purification chamber, and a purification gas outlet is positioned on the lateral wall of the of the gas purification chamber. The middle tank body is positioned below the upper tank body and comprises a waste gas inlet, a dust-gas separation device, a filter device and a filter chamber, wherein the waste gas inlet is positioned at the upper end of the dust-gas separation device and connected with the lower portion of the waste gas inlet channel, the dust-gas separation device is vertically arranged in the middle tank body and penetrates through the upper end and the lower end of the middle tank body to form a dust-gas separation channel, the filter device is arranged on the lateral side of the dust-gas separation device, an opening of the filter device is communicated with the gas purification chamber of the upper tank body, and the space in the middle tank body except the waste gas inlet, the dust-gas separation device and the filter device is treated as a filter chamber. The dust remover is efficient, can save energy, protects material consumption, prolongs service life and is low in daily running cost.

The invention relates to a high WOB anti-deviation well straightening drill assembly comprises: a bit, a drill thick in lower part, a drill collar and a centralizer, the dill collar comprises a rill collar thin in the lower part, a rill collar thin in the upper part, a rill collar thin in the upper part, the bit, the drill thick in the lower part, the drill collar thin in the lower part , the centralizer, the drill collar thin in the upper part, the drill collar thick in the upper part is connected in turn. The device structure is simple, and is assembled with the common drill, the production cost and using cost are low, the performance is stable, other risks can't be taken to the drilling operation in the using process; the combination structure of the drill thick in the lower part, the drill collar thin in the lower part , the centralizer, the drill collar thin in the upper part, the drill collar thick in the upper part exerts a strong pendulum force to the drill to promote the organic unification of the two kinds of effect of anti-deviation well straightening which is the drill cutting face to the angle drop direction, the effect of anti-deviation well straightening is better, the anti-deviation effect is more obvious when the drill pressure is bigger, the performance is not limited by the downhole condition, the drilling speed can be increased; the device is also applied to the straight hole, the application scope is broad.

The invention relates to the technical field of non-excavation engineering equipment, in particular to a rectangular pipe jacking machine excavation face blind area crushing device and method. The crushing device is internally provided with a driving mechanism, and the output end of the driving mechanism is connected with a crossed conical groundbreaking device. A plurality of axial high-pressurenozzles and a plurality of radial high-pressure nozzles are arranged on the crossed conical groundbreaking device in a surrounding mode. The axial high-pressure nozzles and the radial high-pressure nozzles are connected with a high-pressure water source. According to the rectangular pipe jacking machine excavation face blind area crushing device and method, compared with the prior art, the composite structure is simple and feasible, mounting and dismounting are easy, and the rectangular pipe jacking machine excavation face blind area crushing device and method have the advantages that large jacking force can be provided, the groundbreaking device is in a crossed cone shape, the very large pressure intensity can be generated, and thus the groundbreaking efficiency is greatly improved; and high-pressure water spraying heads in different flow jetting directions are additionally arranged on the periphery, the crushing device participates in breaking and cutting work of soft rock and reinforced area soil mass while the crushing device serves as a cleaning and cooling device, the cutting efficiency is improved, the broken soil mass can further be softened, and the soil mass is smoothly removed advantageously.

The invention provides a method for positioning and orientation of a tunneller. The method comprises a navigation position calculation process for acquiring real-time speed and position information ofa tunneller and an inertia calculation process for acquiring real-time attitude information of the tunneller. During the inertia calculation process, an attitude quaternion is introduced to calculatereal-time attitude information of the tunneller and is obtained by calculating corresponding speeds and intermediate speeds on all direction axes of a navigation coordinate system, wherein the navigation coordinate system includes an x axis, a y axis, and a z axis. With the provided method, the influence of the working environment on the positioning and orientation of a tunneller canb e eliminated; full autonomous navigation can be realized; the trouble of setting the rear tunnel reference manually can be saved; and the construction efficiency can be improved substantially. In addition, the invention also provides an apparatus for the method for positioning and orientation of a tunneller. The apparatus has a simple structure; and a problem of low positioning accuracy of the tunneller dueto the working environment in the prior art is solved.

A multi-cavity independent air bag flexible supporting hole type damping seal comprises a sealing lining, a flexible air bag and a sealing shell sequentially from inside to outside in a sleeved mode,wherein the sealing lining, and the flexible air bag and the sealing shell are all cylindrical barrels sharing the same axis line; damping holes are evenly distributed in the inner wall of the sealinglining, and the outer wall of the sealing lining is a smooth face and is tightly attached to the flexible air bag; the flexible air bag comprises a plurality of metal film air bag units which are evenly distributed in the axial direction and the circumferential direction and connected with one another into a whole through connecting parts; an independently controlled air valve is arranged on theouter surface of each film air bag unit; and through holes in one-to-one correspondence with the air valves are formed in the sealing shell, and the air valves penetrate through the through holes to be connected with an external air pipeline. The rigidity and damping of the sealing structure of each part can be adaptively regulated and controlled according to the change of working conditions, andthe problem that sealing teeth are abraded by a rotor under extreme working conditions in the unit operation process, and consequently a steam seal gap is enlarged is effectively solved.

The invention belongs to the technical field of compressor equipment, and relates to a dynamic balance type internal combustion air compressor, wherein a power cylinder cover component and a machine body are fixedly connected; the sealing of a power piston and a power cylinder sleeve is realized through a piston ring; the power piston component and a connecting rod body are connected by a piston pin, and further constitute a revolution pair; the connecting rod bodies and a spheroidal graphite cast iron crank shaft of bearing bushes installed in the interiors of connecting rod heads constitute the revolution pairs; the connecting rod bodies and the connecting rod heads are connected into a whole body; an air compression cylinder cover component, a steel valve plate and the machine body are connected into an integral structure; an air compression cylinder sleeve and the machine body are connected; the sealing of an air compression piston component and the air compression cylinder sleeve is realized through the other piston ring; the air compression piston component and the other connecting rod body are connected by the other piston pin, and further constitute the revolution pair; and a suction valve block reset spring and an exhaust valve block reset spring are guided through the utilization of a guide shaft. In addition, the dynamic balance type internal combustion air compressor is reliable in principle, simple in structure, low in preparation cost, high energy conversion efficiency, friendly to the environment, strong in balance function and wide in application.

The application relates to a concave flow distribution plate and a reactor with the same. The concave flow distribution plate is formed by modifying a flat flow distribution plate and comprises a concave structure that is concave down along its axis and a bent structure bent down from the periphery of the concave flow distribution plate; the concave structure is conical structure, spherical structure or composed of symmetrical concave double-curved surface; the flow distribution plate helps process gas from the bottom of the reactor to flow out of flow holes so that material from the upper portion of the reactor and process gas rising from below can be balanced and fully contacted, thus keeping a relative pressure, the distribution plate has flow balancing performance, particulate mobility and internal structure fatigue resistance and is simple in combination structure and convenient to mount and maintain, a support of the distribution plate is more reasonably stressed, high stability is provided, spatial layout is safer and more scientific, the reactor is better in operation flexibility, reaction heat can be removed more flexibility, safety of a shell wall is protected, and the service life of the reactor is prolonged.

The invention relates to the technical field of tower crane construction, in particular to a three-dimensional collision-preventing method of tower cranes and a collision-preventing device of the three-dimensional collision-preventing method. A position collecting device is used for collecting the positions of the outer ends of tower arms of tower cranes, a processor is used for conducting collision analysis on any two tower cranes, and an analysis result is sent back to a processing terminal. Compared with the prior art, the combined structure is simple and feasible, and mounting and demounting are easy. The three-dimensional collision-preventing method of the tower cranes and the collision-preventing device of the three-dimensional collision-preventing method have the beneficial effectsthat a position collecting device is used for obtaining position information, the processor is used for conducting data processing, and the processing terminal is used for conducting feedback; the whole collision-preventing method is ordered and clear, due to the original design of the data processing method, the collision-preventing method which conducts operation simply and conveniently and conducts processing rapidly is achieved; and in addition, the specific collision conditions and positions between the tower cranes can be accurately judged, running of the tower cranes can be better adjusted effectively in time, and safety accidents are prevented.

The invention relates to a foldable photovoltaic module and a manufacturing method thereof. The foldable photovoltaic module comprises a bottom cloth, a window cloth and photovoltaic cell structures,wherein a plurality of openable windows are arranged neatly on the window cloth; a plurality of photovoltaic cell structures are arranged between the bottom cloth and the window cloth and are corresponding to the positions of the windows; the plurality of photovoltaic cell structures are provided with flexible circuit boards; series connection, parallel connection or series-parallel hybrid connection among the photovoltaic cell structures can be realized through flexible wires connected with the flexible circuit boards; the transverse flexible circuit boards are arranged in a spaced mode at the top sides and the bottom sides of the photovoltaic cell structures; the longitudinal flexible circuit boards are arranged in the middle sections of the bottom or the top of the photovoltaic cell structures; and the transverse flexible circuit boards and the longitudinal flexible circuit boards are not simultaneously arranged at the bottom or the top of the photovoltaic cell structures. The foldable photovoltaic module has the advantages that folding is facilitated; the size is small; the weight is light; carrying is facilitated; and four corners of the bottom and the window cloth of the foldable photovoltaic module are provided with through holes, the foldable photovoltaic module is suspended through ropes and can be unfolded to realize absorption of solar energy.

The invention relates to an automated training cabin for explosive seeking for a police dog. The automated training cabin comprises a training cabin unit, an odor generation unit, an exhausting systemand a control system; the automated training cabin is characterized in that the training cabin unit comprises a training cavity formed by multiple base modules, a cabin cover arranged on the trainingcavity, a collecting groove arranged at the bottom of the training cavity and feeding grooves clamped outside the base modules, and smell holes communicated with the feeding grooves are formed in theinner walls of the base modules; the odor generation unit comprises multiple rotating supports limited above the training cabin units, smell tanks limited on the rotating supports and a driving unitwhich is used for driving the rotating supports, arranged on the cabin cover and driven by the control system; the exhausting system comprises an annular pipe, an exhaust pipe communicated with the feeding grooves and an exhaust manifold arranged on the annular pipe. The automated training cabin has the advantages of being simple and compact in structure, convenient and rapid to use, high in automation degree, safe and reliable in use process, wide in application range, efficient in training and the like.

The invention provides a method for stabilizing a quantum light source and the stabilized quantum light source. The method comprises the following main steps: splitting a beam of coherent light into afirst light beam and a second light beam, and adjusting the second light beam till the single photon intensity for output; and performing light intensity detection on the received first light beam toobtain a light intensity value corresponding to the first light beam; according to light intensity values of a plurality of prestored historical time nodes and a light intensity value acquired at thecurrent time node, performing regression analysis to predict a light intensity value of a next time node, and based on the predicted light intensity value, acquiring a light intensity deviation valueto adjust the produced coherent light so as to stably output the second light beam.

Disclosed is a combined type household gun cabinet. A gun cabinet body is formed movably connecting six metal plates, L-shaped inner flanging edges are arranged on four edges of an upper metal plate and a lower metal plate and two lateral sides of a left metal and a right metal plate, U-shaped inner flanging edges are arranged on four edges of a front metal plate and a rear metal plate and upper edges and lower edges of the left metal plate and the right metal plate, large mounting holes are formed in the L-shaped inner flanging edges, small mounting holes are formed in the U-shaped inner flanging edges, the large mounting holes and the small mounting holes are connected via reducing bolts, two ends of each reducing bolt are connected with a large nut and a small nut respectively in threaded manners, the large nuts are hand-screwed nuts, a fire-proof layer and a boron-carbide bulletproof ceramic layer are mounted inside the gun cabinet body, an automatic fire extinguishing device is mounted at the top inside the gun cabinet body, the gun cabinet is combined and can be separated conveniently by disassembling the bolts and the hand-screwed nuts, the metal plates after disassembling are not connected, so that light weight and convenience in transportation are achieved, small size is achieved after the metal plates are stacked, transportation cost can be reduced, flames can be resisted by the fire-proof layer, chips of exploded ammunition can be intercepted by the boron-carbide bulletproof ceramic layer, and fire can be extinguished immediately by the automatic fire extinguishing device.

The invention relates to the technical field of a control circuit and a control method of a hydraulic system and in particular relates to a switchable single-action and serial synchronous circuit andan application method thereof. The switchable single-action and serial synchronous circuit comprises at least three oil cylinder units which are arranged in sequence and at least two switching valves;each oil cylinder unit is composed of an oil cylinder, an inlet pipeline structure connected with an oil cylinder rodless cavity and an outlet pipeline structure connected with an oil cylinder rod cavity; the inlet pipeline structure and the outlet pipeline structure of each oil cylinder unit are connected with an oil inlet respectively; the outlet pipeline structure of the former oil cylinder unit is communicated to the inlet pipeline structure of the next oil cylinder unit and the corresponding switching valve. The switchable single-action and serial synchronous circuit provided by the invention has the advantages that connecting oil paths of the plurality of oil cylinders are switched between serial connection and parallel connection by a mini-type solenoid valve and various control modes are realized; a hydraulic synchronous element is not needed; the cost is reduced and the appearance volume is also reduced; the switchable single-action and serial synchronous circuit is simpler and more convenient to mount and use; the oil cylinder units are mounted on a valve group and the valve group can be spliced or detached according to actual utilization requirements.

The invention discloses a flameproof DC motor, relating to the field of DC motors. The flameproof DC motor comprises a flameproof casing, a front end cover, a rear end cover, a small end cover, a DC motor and a cable entry device, wherein the front end cover and the rear end cover are separately and fixedly arranged at two ends of the flameproof casing, the small end cover is arranged on the front end cover, and the DC motor is arranged in a flameproof cavity; a fixed sleeve and a steel sleeve are arranged in the front end cover, and a bearing for the rotating shaft of the DC motor to penetrate through is arranged at the connecting part of the small end cover and the front end cover; the cable entry device is fixedly arranged on the flameproof casing and is communicated with the flameproof cavity; the cable entry device comprises a compression nut, a communication section, a lead section, metal gaskets and sealing rings; the compression nut and the communication section are sequentially screwed into the lead section, and the metal gaskets and the sealing rings are respectively arranged between the compression nut, the lead section and the communication section. The flameproof DC motor disclosed by the invention is novel in type and high in security, also can be applied to a variety of small flameproof electric vehicles,and can meet the market demands.

The invention relates to a corrugated radiator. The corrugated radiator comprises a radiator base and corrugated radiating fins, wherein grooves distributed in parallel at intervals are formed on the upper surface of the radiator base; the lower corrugated ends of the corrugated radiating fins are retained in the grooves correspondingly one to one, and in sufficient contact with the bottom surfaces and the sidewalls of the grooves, respectively. In this way, the contact area between the radiator base and the corrugated radiating fins can be effectively increased, and the corrugated radiator is low in thermal resistance, high in heat conduction efficiency, good in heat dissipation property, and stable and reliable in performance; in addition, the combined structure of the radiator base and the corrugated radiating fins is simple, low in production difficulty, and easy, convenient and quick to assemble; combined with quick heat conduction of the corrugated radiating fins, heat on the radiating fins can be dissipated more quickly; and therefore, the corrugated radiator is excellent in heat dissipation effect.

The inventionbelongs to the field of petroleum engineering and relates to an anti-collision drilling assembly for vertical sections in dense cluster well groups and an anti-collision method thereof. The anti-collision drilling assembly for vertical sections in dense cluster well groups comprises a drill bit, a drill bit upper collar, a strong magnet sub, a centralizer lower collar, a packed hole centralizer; the drill bit, the drill bit upper collar, the strong magnet sub, the centralizer lower collar, and the packed hole centralizer are sequentially connected in a threaded manner; the strong magnet sub comprises a strong magnet which is a cylinder having a through hole. The anti-collision drilling assembly for vertical sections in dense cluster well groups and the anti-collision method thereof have the advantages that a principle is simple, manually making anti-collision obstacle-bypassing measures or changing the original drilling method is not required, adding high-precision equipment is not required, construction of other wells is unaffected, the perfect function of automatic conversion from active anti-collision obstacle bypassing to normal drilling in the drilling process is achieved, no risks of other aspects are caused to drilling during the application process, special requirements for ground facilities, drilling strings and drill bit types are avoided, and the popularization and use is benefited.

The invention relates to the technical field of rail construction, and in particular relates to an urban rail transit engineering highway-railway dual-purpose rail layer and a using method thereof. The device comprises a frame structure, a walking mechanism and a hoisting system; the frame structure comprises a frame; the frame comprises a side frame structure and an upper connecting frame structure; the side frame structure comprises a lower fixed structure and an upper movable structure; the upper movable structure can stretch out and draw back relative to the lower fixed structure; the upper connecting frame structure comprises a fixed structure and a movable structure, and the movable structure can stretch out and draw back relative to the fixed structure; the walking mechanism is connected with the frame structure and used for moving the frame structure; and the hoisting system is arranged on the frame structure and used for hoisting. Compared with the prior art, the combined structure is simple and feasible; the structure for changing the running track distance of the highway-railway dual-purpose rail layer for urban rail transit engineering and the structure for changing thespan of the whole machine are separately designed; the walking mechanism is designed to be of a height and position adjustable structure; and corresponding change requirements can be met according toworking condition requirements.

The invention relates to the technical field of engineering technical equipment and engineering approaches, in particular to an underground line monolithic roadbed expansion joint form reinforcing device and a construction method thereof. The reinforcing device comprises at least two angle iron structures which are in parallel arrangement and connected fixedly; an expansion joint form is arrangedbetween every two adjacent angle iron structures; connecting ends arranged below two ends of each angle iron structure are fixedly connected with the angle iron structure; the reinforcing device is arranged between sleepers and fixedly connected with steel rails through fixing structures. Compared with the prior art, the reinforcing device has the advantages that the reinforcing device which has combination structure is simple and feasible and is easy to mount and demount, has effect of enhancing control to the expansion joint forms, reducing deformation of the expansion joint forms, and improving appearance quality of expansion joints, and further is adaptable to ranges of various roadbeds, is easy and convenient, and enhances control to height of the connecting ends.