359results about How to "Easily damaged" patented technology

The invention discloses a numerical control machine tool motor operation monitoring method and system based on data analysis, which are used in the field of motor monitoring and fault diagnosis, and the method comprises the steps: collecting working condition data corresponding to the operation process of a numerical control machine tool motor; establishing a temperature change trend model, and predicting temperature change conditions of the motor of the numerical control machine tool under different working conditions; combining the extracted frequency and amplitude with the prediction result of the temperature trend model, and judging the current operation state of the numerical control machine tool motor; and setting a threshold value of the working condition data, comparing a classification analysis result with a preset threshold value, and automatically triggering a multi-stage early warning mechanism when monitoring that the working condition data of the motor of the numerical control machine tool exceeds the threshold value. According to the method, preventative maintenance is realized, sudden faults are avoided, the motor is ensured to operate under efficient and stable conditions by determining the optimal electrical working range and real-time monitoring data, energy consumption is reduced, the service life of equipment is prolonged, and intelligent motor state analysis and prediction are realized.

The invention relates to the technical field of biocatalysts, in particular to a FeCo-NC bimetallic monatomic nano-enzyme as well as a preparation method and application thereof. The preparation method of the nano enzyme comprises the following steps: preparing Co-ZIF-8 from zinc nitrate, cobalt nitrate and 2-methylimidazole; the Co-ZIF-8 and ferric chloride are used for preparing the FeCo-NC bimetallic monatomic nano-enzyme, the molar ratio of the zinc nitrate to the cobalt nitrate is (20-30): 1, and the molar ratio of the cobalt nitrate to the ferric chloride is (2-6): 1. The nano-enzyme prepared by the embodiment of the invention is of a monatomic structure, has double-enzyme activity, can simultaneously simulate catalase and NADH oxidase, and has the capability of removing active oxygen.

The invention provides a high-voltage circuit breaker partial discharge monitoring and early warning method and system, and relates to the technical field of partial discharge monitoring, and the method comprises the steps: obtaining the feature information of a target circuit; a circuit analysis model is called for analysis, and a target analysis result is obtained and comprises a plurality of target point locations; dynamically monitoring the first target point location through an ultrahigh frequency sensor to obtain first partial discharge information; calling a signal analysis model for processing and analysis to obtain a first signal feature set; activating a fault diagnosis model to analyze the first signal feature set to obtain a first diagnosis tag; and when the partial discharge fault of the target high-voltage circuit breaker at the first target point location is displayed, a first early warning signal is sent out. The technical problems that in the prior art, partial discharge monitoring mostly depends on artificial experience or fixed rules, intelligent analysis means are lacked, misjudgment or missed judgment is prone to occurring, accurate positioning is difficult, and the safety of the high-voltage circuit breaker is reduced are solved.

The invention provides a detachable high-adaptation conductive adhesive test seat and adaptation equipment thereof, and relates to the technical field of chip tests.The test seat comprises a base, a bottom plate and a connecting frame, two connecting blocks are arranged in the base, the opposite faces of the two connecting blocks are fixedly connected with fixing blocks, the base is internally provided with a test seat, and the test seat is fixedly connected with the bottom plate. The control system determines corresponding clamping parameters including the stroke of the air cylinder, the clamping force and the like according to the type and the specification of the chip, the control system sends out an instruction to drive the air cylinder to start acting, a piston rod of the air cylinder stretches out and drives the clamping block to move towards the chip, and the clamping block accurately clamps the chip according to the preset position and force. According to the automatic chip testing device, the chips are ensured to be stable in the testing process, so that automatic adaptive fixation of different chips is realized, the identification and adjustment processes can be quickly completed through automatic identification and adaptive functions after the chips are put into the device, the manual intervention time is greatly shortened, and the overall automation degree and the testing efficiency are improved.

The invention provides a culture method for improving immunity of fishes. The culture method comprises the following steps: S1, selection of culture points; S2, specification and layout of net cages; S3, selection and throwing of fish fries; according to the fry disinfection method disclosed by the invention, the fry are soaked and disinfected by using a compound disinfectant prepared from povidone iodine, polysorbate, citric acid and vitamin C in a specific proportion, so that pathogenic microorganisms on the surfaces and gill parts of fish bodies are effectively killed. According to the breeding management, the immunity of the fish body is comprehensively enhanced by feeding the fish with an immune conditioner composed of campesterol palmitate, immunomodulatory peptide, beta-glucan and astaxanthin in a specific proportion. According to the bottom mud management, the content of harmful substances is reduced by putting a bottom mud modifier composed of sodium molybdate, nitrifying bacteria, photosynthetic bacteria, tetrandrine and sodium alginate in a specific proportion, growth of pathogenic bacteria is inhibited, nutrient substance circulation is promoted, the water quality environment is optimized, and healthy growth of fry is promoted.

The invention discloses a battery inconsistency diagnosis method based on capacity estimation, and the method comprises the steps: obtaining the historical data of a vehicle, and carrying out the preprocessing of the historical data; carrying out correlation analysis on the preprocessed data, screening out data fields of which the correlation with the capacity of the battery monomer exceeds a set correlation coefficient, and marking the data fields as health factors; constructing a battery cell capacity prediction model based on a time sequence prediction algorithm, and training the battery cell capacity prediction model by using the screened field data and historical capacity data; acquiring real-time data of the vehicle, picking out screened data fields, transmitting the data into the trained battery cell capacity prediction model, and predicting to obtain the capacity of the battery cell; and carrying out abnormal coefficient calculation on the predicted capacity of the single battery, and if the abnormal coefficient is not in a preset range, judging that the battery module has an inconsistency fault. According to the invention, whether the power battery has an inconsistency fault or not can be accurately judged.

The invention discloses a continuous fiber reinforced co-extrusion die, a forming line body and a fiber reinforced foaming floor, and relates to the technical field of foaming floors, the continuous fiber reinforced co-extrusion die comprises a die body, the front end face and the rear end face of the die body are a mixed extrusion face and a core material feeding face respectively, and one side face of the die body is provided with a shell material feeding port; a core material supply channel penetrating through the mixed extrusion face and the core material supply face is formed in the mold body, a shell material supply cavity surrounding the core material supply channel is formed in the mold body, two fiber channels are formed in the mold body, the two fiber channels are symmetrically arranged up and down, and the fiber channels are arc-shaped bent channels. The forming line body comprises a continuous fiber reinforced co-extrusion die, a core material extruder and a shell material extruder; a shaping module, a vacuum water cooling group, an open type water cooling group and a traction machine are sequentially arranged on the mixed extrusion surface of the mold body. According to the invention, the overall strength and performance of the composite material are optimized, and uniform distribution and orientation of reinforced fibers are ensured.

The utility model belongs to the technical field of water inlet devices, and discloses a water tank water inlet device which comprises a large water tank with an opening in the upper end, a supporting plate is fixed to the side wall of the large water tank, a small water tank is installed on the upper surface of the supporting plate, an exhaust valve is arranged on the upper surface of the small water tank, and a first communicating pipe is connected to the exhaust valve. The bottom of the small water tank is connected with a first communicating pipe, the other end of the first communicating pipe extends into the large water tank, the bottom of the small water tank is connected with a second communicating pipe, the other end of the second communicating pipe is connected with the lower end of the side wall of the large water tank, a floating ball valve is arranged in the small water tank, the floating ball valve is connected with a main valve, and the main valve is connected with a guide pipe used for water inflow. The floating ball switch has the effect of reducing the damage probability of the floating ball switch.

The invention discloses a Keemun black tea fermentation product, a preparation method thereof and application of the Keemun black tea fermentation product in caenorhabditis elegans anti-aging research. Active components in the black tea can be more fully extracted by using the natural eutectic solvent, and then the active components are further fermented by sequentially using the lactobacillus and the thermophilic thermophilic bacteria, so that the Keemun black tea fermentation product is prepared. The Keemun black tea fermentation product prepared by the invention is applied to caenorhabditis elegans anti-aging research, and adverse effects caused by oxidative stress are relieved through the antioxidant effect of the Keemun black tea fermentation product, so that the antioxidant enzyme activity (SOD, CAT and GSH) of caenorhabditis elegans is remarkably improved, and the metabolite (MDA) is remarkably reduced; and the ROS level in the caenorhabditis elegans is also obviously reduced. Therefore, the Keemun black tea fermentation product prepared by the invention has better antioxidant activity, and can effectively improve the oxidative stress damage of the caenorhabditis elegans, thereby effectively prolonging the life of the caenorhabditis elegans.

The invention discloses a TBC battery structure, a preparation method thereof and a TBC battery, in the structure, a P region and an N region are respectively provided with a P-type / N-type doped polycrystalline silicon passivation layer, and an oxygen-doped polycrystalline silicon layer is arranged between the P region and the N region. The preparation method comprises the step of preparing the P-type / N-type doped polycrystalline silicon passivation layer and the oxygen-doped polycrystalline silicon layer on the P region and the N region. In the structure, the oxygen-doped polycrystalline silicon layer is arranged between the P region and the N region, so that the P region and the N region can be effectively separated, an excellent shadow shielding resisting function of a corresponding assembly can be realized, and the generating capacity of the assembly in a shadow shielding environment can be further improved. According to the preparation method, the design of depositing multiple tunneling oxide layers and polycrystalline silicon layers at a time, the design of a laminated mask, a new isolation mode, an efficient cleaning process and the like are adopted, the problems that an existing TBC battery preparation process is tedious, boron-doped polycrystalline silicon laser ablation residues exist, the investment and generation cost is high and the like are effectively solved, and the preparation method is a brand-new TBC battery route.

The utility model relates to the technical field of vacuum circuit breaker cabinets, and provides a compact automatic delivery type vacuum circuit breaker cabinet which comprises a cabinet body, a cabinet door is rotatably connected to the outer surface, close to the front end, of the cabinet body, a plurality of sliding grooves are formed in the opposite faces in the cabinet body, limiting grooves are formed in the bottoms of the sliding grooves, and the cabinet door is rotatably connected to the cabinet body. Sliding plates are movably embedded in the multiple sliding grooves, and limiting blocks are fixedly installed on the sides, away from the cabinet door, of the bottoms of the multiple sliding plates. The two handles are pulled to drive the two limiting pins to move relatively, after the two limiting pins move out of the interior of the limiting holes, the rectangular frame can be pulled to move out of the interior of the cabinet body, the rectangular frame is limited in the cabinet body through a plurality of sliding plates, limiting blocks are fixedly installed at the bottoms of the sides, away from the cabinet door, of the sliding plates, and the limiting blocks are movably embedded in limiting grooves. And after the rectangular frame is moved out, equipment installation or maintenance can be carried out on the installation plate in the rectangular frame, and the operation is relatively convenient.

The invention relates to the technical field of medical apparatus and instruments, and discloses an injection and suction handle sleeve cap for a polished capsular membrane in a cataract phacoemulsification surgery. The handle is detachably connected with the body; the injection and suction inlet is formed in the top end of the body; the filling opening is formed in the outer side wall of the body; the cleaning device is located in the body; the cleaning device comprises a cleaning brush, a cleaning seat, an inflatable airbag, an air pipe and a push column, a cleaning groove is formed in the outer side wall of the body, the cleaning seat is slidably connected to the interior of the cleaning groove, the cleaning brush is fixedly connected to the outer side wall of the cleaning seat, and the inflatable airbag is fixed to the interior of the cleaning groove; the sleeve cap body is detachably connected to the handle, hard damage of metal materials to eyes is avoided, attachments and chyloids are scraped and cleaned through the cleaning device, the situation that in a traditional operation, the attachments are extracted through an enhanced negative pressure system, and extraction rupture is caused to a capsular membrane due to too large negative pressure is avoided, and the operation efficiency is improved. And the safety performance of the operation is improved.

The present invention relates to the technical field of silicon wafer detection, and specifically to a multi-angle visual inspection jig for surface defects of semiconductor silicon wafers, comprising an integral external mechanism, wherein the integral external mechanism also comprises an integral bottom plate. The present invention utilizes the characteristic that light energy can be refracted through a mirror surface. After the semiconductor silicon wafer is processed, the surface of the processed original part has mirror characteristics. At this time, the processed original part is irradiated by an external irradiation mechanism, and the light reaches a photosensitive area along a set light path. When dust exists on the surface of the processed original part or the polishing effect is poor during grinding, the refraction efficiency will be low, and the refracted light projected into the photosensitive area will be reduced. The product avoids the trouble of an operator having to hold the silicon wafer by hand for inspection, reduces the chance of the semiconductor silicon wafer coming into contact with external objects, and avoids collisions between the processed original part and other equipment.

The utility model discloses water conservancy water level detection equipment which comprises a combined supporting vertical rod, a water level monitoring terminal box, a solar power supply device and an ultrasonic liquid level meter, and the water level monitoring terminal box, the solar power supply device and the ultrasonic liquid level meter are fixedly installed on an upper support of the combined supporting vertical rod. A connecting fixing rod is fixedly installed on the surface of the combined supporting vertical rod in a welded mode, a positioning sleeve is arranged at the tail end of the connecting fixing rod, a lifting straight rod is installed on the positioning sleeve in a penetrating mode, and the lifting straight rod is installed on the outer side of the combined connecting rod in a sleeving mode. According to the water level detection equipment for water conservancy, the lifting straight rod can rotate on the combined connecting rod, flexible sleeving can be carried out according to the water level height of a water area, the area, wound with a reflective strip, of the lifting straight rod is conveniently wrapped by the positioning sleeve, the combined connecting rod and the assembling connector are assembled in a threaded mode and are convenient to disassemble, and meanwhile through clamping of the limiting rod and the limiting hole, the water level can be detected conveniently. And the loosening phenomenon caused by stirring of the water surface in the subsequent process is avoided.

The utility model relates to the technical field of bridge supports, in particular to bridge support assembling equipment. The automatic assembling machine comprises a conveying device, a centering device and an assembling device, the conveying device is used for sequentially conveying the upper support plate and the lower support plate to the centering station and the assembling station and conveying the upper support plate and the lower support plate away from the assembling station. The centering device is used for centering the upper support plate and the lower support plate which are positioned at the centering station; the assembling device is located above the assembling station, an electromagnet is arranged at the bottom of the assembling device, and the electromagnet can attract the upper support plate located on the assembling station and drives the upper support plate to ascend to the receding station through vertical ascending of the assembling device. And the assembling device drives the upper support plate to vertically descend and presses the upper support plate on the lower support plate. By arranging the conveying device, the centering device and the assembling device, automation of bridge support assembling is achieved, manpower and material resources are reduced, and safety is improved.

The invention discloses a preserving fluid for relieving ischemia-reperfusion injury of transplanted fatty liver, and belongs to the technical field of biomedicine. The invention provides an application of a fibroblast growth factor 21 in preparation of a medicine for preventing and treating liver injury caused by ischemia-reperfusion or a liver transplanted organ preserving fluid. Hepatic cell injury caused by ischemia-reperfusion can be effectively improved through exogenous supplement of the fibroblast growth factor 21; particularly, aiming at the fatty degeneration transplanted liver, the traditional Chinese medicine composition not only can inhibit color tissue damage, cell apoptosis and inflammation caused by ischemia-reperfusion, but also can improve lipid accumulation in the liver, reverse the fatty degeneration of the liver and improve the fatty degeneration donor liver transplantation curative effect.

The invention provides a potting joint, which belongs to the technical field of power transmission equipment and comprises a pair of pouring buses, the ends of the pair of pouring buses are connected through a connector, joint side plate profiles are arranged on the front side and the rear side of the connector, and joint cover plate profiles are arranged on the upper side and the lower side of the connector. A connector sealing cavity is formed in the connector, a pouring space is defined by the outer side of the connector sealing cavity, the connector side plate sectional material and the connector cover plate sectional material, and an insulating potting material is poured into the pouring space. The problems that an existing pouring bus joint needs to be installed and poured on site, transportation of resin, a catalyst and a curing agent needed by the pouring joint is troublesome, meanwhile, the proportion of pouring materials is difficult to control, disassembly and installation of the joint are inconvenient, and the cost is increased are solved.

This invention discloses a device and method for sewing curved sheets with varying diameters on a flat knitting machine, belonging to the field of textile machinery technology. The device includes a curling mechanism and a sewing mechanism; the curling mechanism includes a variable-diameter cylindrical device and a matching holding mechanism. The variable-diameter cylindrical device includes an inner cylinder and an outer cylinder, which expand or contract synchronously via corresponding telescopic connecting rods and a central spindle. The holding mechanism is controlled by an electromagnet, achieving precise holding of the curved sheet by switching the magnetic pole direction. Through the curling and sewing mechanisms, this device expands the fan-shaped curved sheet from a two-dimensional to a three-dimensional structure during rotation, while simultaneously achieving automatic edge sewing of the curved sheet. The inner cylinder can move axially relative to the outer cylinder, allowing the sewn curved sheet to automatically detach from the outer cylinder. This invention simultaneously achieves gripping, curling, expansion, alignment, and demolding, and is suitable for sewing curved sheets with varying diameters on both sides.

This invention belongs to the field of traditional Chinese medicine technology, and provides a traditional Chinese medicine composition with the effects of clearing the throat and relieving cough, and its preparation method. The traditional Chinese medicine composition contains the following components: Scrophularia ningpoensis, Ophiopogon japonicus, Platycodon grandiflorus, Terminalia chebula, Mentha haplocalyx, Paeonia lactiflora, Glycyrrhiza uralensis, Borneol, and rice wine. This traditional Chinese medicine composition nourishes Yin and moistens dryness, cools the blood and reduces swelling, clears the throat and relieves cough, and can effectively improve symptoms such as sore throat, foreign body sensation in the throat, hoarseness, dry and itchy throat, and irritating dry cough caused by endotracheal intubation or gastric tube placement. This traditional Chinese medicine composition has definite efficacy, high safety, and few side effects, and has excellent clinical application and industrialization prospects.

The utility model relates to the technical field of unmanned aerial vehicles, and discloses an unmanned aerial vehicle carrying an anti-falling device, which comprises an unmanned aerial vehicle body, the upper surface of the unmanned aerial vehicle body is fixedly connected with a rectangular box, the inner bottom wall of the rectangular box is fixedly connected with a first spring, and the top end of the first spring is fixedly connected with a connecting piece. A fixing block is fixedly connected into the connecting piece, a parachute is arranged at the top end of the fixing block, and a rectangular plate is fixedly connected to one side of the inner wall of the rectangular box. The device has the following advantages and effects that the motor is started, the output end of the motor drives the threaded rod to rotate, the threaded block can move along the threaded rod under the limitation of the sliding rod and the sliding block so as to drive the pressing plate to move, and when the pressing plate is separated from the connecting piece, the connecting piece and the parachute can break through a plastic film under the action of the first spring, so that the plastic film is prevented from falling off. And at the moment, the parachute is opened, and a fixing plate, a second spring, a bottom plate and a sponge layer are arranged in a matched mode, so that the unmanned aerial vehicle body can be protected.

The utility model discloses a filter element for a motorcycle air filter, which belongs to the field of motorcycle air filters and comprises a first filter component and a second filter component, the first filter component comprises a mounting shell, a mounting groove is arranged on the surface of the mounting shell, and a first filter screen is arranged in the mounting groove. The second filter assembly comprises a first frame body and a second frame body which are mounted on the surface of the mounting shell, filter cotton is mounted in the first frame body and the second frame body, filter paper is arranged on one side of the filter cotton, and a second filter screen is arranged on one side of the filter paper; according to the air filter element structure, the first filter assembly is matched with the second filter assembly, so that the air filter has multiple filtering operations on air, the practicability of the filter element structure is remarkably enhanced, meanwhile, all parts are convenient to disassemble and assemble through mutual matching of the structures, and the disassembly and assembly use convenience of the filter element can be improved.

The invention provides a flat heat pipe with a multi-scale wick. The flat heat pipe comprises a lower bottom plate, the lower surface of the multi-scale liquid absorption core is fixedly connected with the upper surface of the lower bottom plate, the multi-scale liquid absorption core is foamy copper internally provided with a honeycomb-shaped V-shaped channel, and a hydrophilic modification layer is formed on the surface of the multi-scale liquid absorption core; and the edge of the lower surface of the upper cover plate is connected with the edge of the upper surface of the lower bottom plate so as to seal the multi-scale wick.

The present invention relates to an automatic control system for a milling and drilling compound machine tool based on double-ring buckle production, comprising a frame body, a processing component, a central control unit, a cooling device and an image acquisition component, wherein the frame body is used to support the frame body and the machine tool components, the processing component is arranged on the frame body, and is used to perform a milling and drilling compound process, the processing component comprises a cutter head for milling and drilling and a pressure sensor arranged at the upper end of the cutter head and capable of detecting the pressure borne by the cutter head, the image acquisition component is used to perform image acquisition of a workpiece to be processed and the processing component located on the processing component, the central control unit is connected to the processing component and the image acquisition component respectively, and can determine the current rotation speed and feed speed of the cutter head according to the pressure detected by the pressure sensor, and re-determine the re-determined feed speed through the detection result of an infrared imaging device. The present invention is more intelligent for the adjustment of milling and drilling processing.

The invention discloses a micromotor-driven distributed turbulent flow pumpless liquid cooling device for space thermal control. The micromotor-driven distributed turbulent flow pumpless liquid cooling device comprises a pipeline body and an impeller pump, the impeller pump comprises an impeller with the outer diameter being D and capable of actively rotating. When the impeller pump is used for overall heat dissipation of a single small-size electronic element, one impeller pump is arranged in the cooling flow channel at the position 0.5 D-1. 5D away from the upstream of the small-size electronic element; when the impeller pump is used for eliminating the hot spots of the large-size electronic element, one impeller pump is arranged in the cooling flow channel at the position 0.5 D-1. 5D away from the upstream of each hot spot to be eliminated. An external pump is removed, and the impeller pump is arranged in the cooling flow channel, so that on one hand, a cooling working medium is pumped, on the other hand, a turbulent flow effect is achieved on the cooling working medium, a boundary layer is broken, and the heat dissipation effect is improved. In addition, for a large-scale heat dissipation scene, a plurality of impeller pumps can be arranged in the cooling flow channel in an array mode, the impeller pumps can be placed at local hot spots in a targeted mode, targeted heat dissipation is achieved, and the heat dissipation efficiency and uniformity are further improved.

The application provides a steam delivery pipeline leakage detection system, which comprises a metal conducting rod fixedly connected to the outer wall of a steam delivery pipeline, a sensor connected to the metal conducting rod, a signal analyzer electrically connected to the sensor, and a DCS control center electrically connected to the signal analyzer, and the sensor is used for collecting the vibration sound signal of the metal conducting rod. The steam delivery pipeline leakage detection system of the application can accurately and timely determine the leakage and the position of the leakage point by using the metal conducting rod connected to the steam delivery pipeline to transmit the vibration sound generated by the intense friction between the leakage medium and the pipeline wall, and the sound signal is not obviously attenuated in the transmission process due to the solid medium transmission, the transmission distance is long, and the sound signal is not easily interfered by other signals, the false positive rate of the leakage detection is effectively reduced, the operation and maintenance cost of the steam delivery pipeline is significantly reduced, and the industrial safety is improved.

The utility model discloses an electric servo control universal testing machine which comprises a base, a pressure detection table is arranged in the base, a supporting plate is arranged in the side direction of the base, and supporting frames are arranged at the two ends of the supporting plate. A downward pressing push plate is arranged on the inner side wall of the supporting plate, a first sliding rail and a second sliding rail are arranged on the side wall of the supporting frame from inside to outside, a first protection frame is arranged on the first sliding rail in a sliding mode, and a second protection frame is arranged on the second sliding rail in a sliding mode; the first protection frame and the second protection frame are arranged, and the sliding stroke of the second protection frame is higher than that of the first protection frame, so that scrap splashing caused by material crushing in the test process is effectively prevented. By means of the double-layer protection design, the risk of injury to surrounding equipment and workers can be greatly reduced, and the safety of the test process is improved. Splashed chippings have large kinetic energy and are prone to damaging a testing machine and other peripheral equipment.

A method for manufacturing a resin container having an undercut shape includes accommodating a preform in a cavity mold having an undercut part; inserting a core mold to an inner side of the preform; introducing blow air into the preform through the core mold to blow-mold the preform into a container; gripping a neck part of the container, in which the core mold is disposed on an inner side, with a conveyance chuck from an outer side and sandwiching the neck part of the container with the core mold and the conveyance chuck; and opening the cavity mold. The container in which the neck part is sandwiched between the core mold and the conveyance chuck is released from the undercut part by the opening of the mold.

The overhead support allowing the rooting position to move comprises a rooting structure, a support structure, a concrete foundation and a heating pipeline, the lower portion of the rooting structure is connected with the support structure, the upper portion of the rooting structure is connected with the concrete foundation, and the heating pipeline is arranged in the support structure. The overhead support allowing the rooting position to move has the beneficial effects that the elliptical groove is formed in the bearing part of the rooting structure, so that a steel rod placed in the elliptical groove is allowed to move along the elliptical groove when being pulled; and by arranging the spring, the steel rod can be reset after the pulling force is reduced. The invention solves the problem that the overhead bracket is easy to damage due to overlarge stress at the root of the bracket caused by thermal expansion and cold contraction of a heat supply pipeline, and provides a novel design form of the rooting part of the overhead bracket, so that the stability of the overhead bracket and the pipeline can be ensured; and the impact of thermal expansion and cold contraction of the pipeline on the overhead bracket is reduced by allowing the rooting part of the overhead bracket to axially displace.

The utility model discloses an external rotor motor, a fan component and an air conditioner, the external rotor motor comprises a stator assembly, a rotor assembly and a supporting member, the stator assembly comprises a stator, and the stator is provided with a central hole; the rotor assembly comprises a rotor and a rotating shaft, the rotor rotatably covers the outer side of the stator and comprises an annular part and an end cover part, the annular part surrounds the circumferential side of the stator, the end cover part is arranged on the shaft side of the stator and connected with the annular part, and the rotating shaft is connected with the end cover part and penetrates through the center hole; the rotating shaft is in running fit with the stator through a bearing which is matched in the central hole and sleeves the rotating shaft; the supporting member is located between the end cover part and the surface of one side, facing the end cover part, of the stator, and comprises a first supporting member arranged on the end cover part and / or a second supporting member arranged on the stator. According to the external rotor motor provided by the embodiment of the utility model, the support member can be used for controlling the fit clearance between the rotor and the stator so as to reduce the damage risk of the bearing.

The utility model discloses a kind of welding devices of radio frequency cable assembly, it is related to radio frequency cable technical field, including base, the bottom surface of base is provided with several moving wheels, brake pad is installed outside moving wheel, the upper surface of base is fixedly installed with protection frame, the upper surface of base is provided with connecting seat, the upper surface of base is provided with adjusting assembly, the upper surface of connecting seat is provided with fixed component, the upper surface of top plate is provided with purification assembly.The utility model, by setting adjusting assembly, it is convenient to carry out welding operation when the cable of different sizes is welded, adjust the height between it and welding equipment to carry out welding operation, ensure that the quality of welding meets the requirement, also can improve the efficiency of radio frequency cable welding, by setting fixed component, for placing fixed processing to radio frequency cable, avoid the situation that welding deviates, and the position of the placement seat of fixed component can be adjusted at will, it is convenient to adapt different length radio frequency cable to carry out placing fixed processing.