67results about How to "Prevent tripping" patented technology

The invention, which relates to the field of power system monitoring and management, provides a power line installation potential safety hazard integrated device comprising a data acquisition unit, a signal processing unit, a data analysis unit, a positioning early warning unit, a data learning module and a big data unit. The data acquisition unit comprises a double-end traveling wave sensor module for acquiring traveling wave signals at the two ends of the power line in real time; by means of the design, a fault tower can be rapidly and accurately positioned, line operation and maintenance personnel can be guided to rapidly find a fault point, rapid and accurate fault positioning is achieved, the problem that the detection effect is low by means of manual inspection or using a simple instrument is solved, real-time monitoring, analysis and positioning can be conducted, the operation and maintenance personnel can be timely notified to go to the site for troubleshooting, and the working efficiency is improved. According to the method, line fault tripping is avoided, fault traveling waves collected each time can be compared with a big data expert database for analysis, and operation and maintenance personnel go to the site to handle faults, continuously learn and improve and adapt to continuously changing environmental conditions.

The utility model provides a rotary adsorption type mirror structure which comprises a shell, a lens and an adsorption assembly, the lens and the adsorption assembly are oppositely connected to the shell, the bottom wall of the shell protrudes towards one side to form an installation base, the top wall of the installation base is concavely provided with an installation groove, the side wall of the installation base is provided with an installation opening, and the installation opening is communicated with the installation groove. A guide slope obliquely extends from one end to the other end of the edge of the mounting opening, and a clamping groove is formed in the top end of the guide slope; the lens is buckled and fixed on the mounting groove through a fixing sheet; the adsorption assembly comprises a sealing membrane and a base piece which are fixedly connected, the sealing membrane can cover the outer side of the shell, the base piece is rotationally connected into the installation base, a spring is connected between the base piece and the installation base, and the base piece is provided with a clamping block corresponding to the installation opening in a protruding mode. And the clamping block can move along the guide slope to be buckled and fixed with the clamping groove. The mirror structure is convenient to mount and operate and smooth to use, and has a good damping effect and a firm connecting structure.

The utility model discloses an asphalt pavement anti-sliding low-noise structure which comprises a rock layer, a supporting pile is fixedly poured in the rock layer, a concrete layer is fixedly poured at the upper end of the supporting pile, and an anti-sliding groove is formed in the upper end of the concrete layer. The installation opening is formed in the asphalt pavement, rainwater can be conveniently and rapidly discharged downwards along the drainage pipe, garbage impurities can be filtered through the design of the filter screen and prevented from entering the drainage pipe, the flatness of the asphalt pavement can be guaranteed through the design of the supporting block, and passersby are prevented from being stumbled by the installation opening; the arc-shaped pavement is arranged at the upper end of the asphalt pavement, rainwater can be conveniently drained to the two sides, rainwater accumulation is prevented from influencing driving, the design of the drainage ports can assist in drainage and improve the drainage efficiency, and the design of the steel bar frame and the square frame can reinforce the concrete layer and the asphalt pavement structure and improve the integrity of the road.

A cable channel environment automatic adjusting device disclosed by the present invention comprises a monitoring module, a communication module, a CPU processor, a power supply module and a control module, an output end of the monitoring module is connected with the CPU processor, a power supply port of the CPU processor is connected with the power supply module, the CPU processor is further electrically connected with the communication module and the control module, and the communication module is wirelessly connected to a mobile equipment terminal. The monitoring module collects water level, temperature, humidity and video environment information of accumulated water of the cable channel and transmits the environment information to the CPU processor, and the control module is started through the CPU processor to automatically adjust the environment of the cable channel. The cable can reliably operate in a normal-temperature and dry environment, the service life of the cable is effectively prolonged, the power failure time is shortened, and the power supply reliability is improved.

The utility model relates to a relative motion support steel structure with a plane rotation function, which comprises a shank frame, and the shank frame is provided with an overturning frame and a rotation driving assembly for driving the overturning frame to rotate towards one side. The guide piece slides on the shank frame in a guiding mode in the transverse direction, the pull rod is arranged on the shank frame in a swinging mode, the pull rod driving piece drives the pull rod to swing, one end of the pull rod is in linkage with the pull rod driving piece, the other end of the pull rod is hinged to the overturning frame, and the overturning frame is connected to the guide piece and can rotate relative to the shank frame. The space on one side of the shank frame can be released in a sideslip rotating mode, the problem that the space is narrow is solved, and a user can stand more conveniently.

This invention provides a portable air conditioner integrating drying and preservation, relating to the field of air conditioning technology, and designed to solve the problem of low energy utilization in portable air conditioners. The portable air conditioner includes a housing, within which are a first heat exchange chamber, a second heat exchange chamber, and a storage chamber. The housing has a first air inlet, a second air inlet, and an air outlet. Both the first air inlet and the air outlet are connected to the first heat exchange chamber, which houses a first heat exchanger and a first fan. The second air inlet is connected to the second heat exchange chamber, which is also connected to the storage chamber via the air outlet. The second heat exchange chamber is isolated from the first heat exchange chamber and houses a second heat exchanger and a second fan. The storage chamber also has an exhaust port configured to connect to an exhaust pipe. This invention can fully utilize waste heat or waste cold energy generated during the cooling or heating process of a space, thereby achieving efficient resource utilization and reducing energy consumption.

The invention discloses a relay control method based on temperature induction. The relay control method comprises the following steps: acquiring electrical equipment protected by a relay to obtain a current current value; obtaining a current-time limit mapping relation; determining an initial countdown time limit corresponding to the current current value based on the current current value and a current-time limit mapping relation; acquiring the current working temperature of the relay to obtain a current temperature value; calculating a final countdown time limit based on the current temperature value and the initial countdown limit; and controlling the relay to trip based on the final countdown time limit. Therefore, the inverse time limit characteristic and the temperature protection are organically combined, more accurate, reasonable and efficient overcurrent protection can be carried out, and the adaptability of the system to a complex operation environment is enhanced.

The utility model discloses a VIN marking machine working frame which comprises a base, a stand column is fixed to the upper end of the base, a transverse pipe is fixed to the upper end of the stand column, the two ends of the transverse pipe are each rotationally connected with a chain wheel, a chain is arranged in the transverse pipe, and the chain is matched with the two chain wheels at the same time. The length of the chain is larger than the distance between the two chain wheels, and the parts, exceeding the chain wheels, of the two ends of the chain naturally fall downwards. One end of the chain is detachably connected with a VIN marking machine, and the other end of the chain is detachably connected with a spring balancer and detachably connected with a steel cable of the spring balancer. According to the utility model, the height and angle of the VIN coding machine can be conveniently adjusted, the transfer is convenient, the coding task can be accurately and quickly completed, and the coding efficiency and quality are improved.

The utility model relates to a take-up track transfer type pile line split air mobile charging robot system, which comprises an air track, a walking module, a movable charger, a winding gun line module, a charger side butt joint module, a winding side butt joint module, a power taking module, a charging call response system and a control processing unit, the movable charger can move along the aerial track and change the track and steer under the driving of the walking module, a winding gun line module is arranged beside each parking space, the movable charger can achieve the purpose that any parking space can be in electrical butt joint with the winding gun line module, and therefore the charging service can be provided for an electric automobile below the movable charger. The utility model relates to the field of new energy vehicle charging, eliminates the one-to-one binding relationship between a movable charger and a charging gun line, greatly improves the utilization rate of charging resources, supports reservation charging and queuing charging, can take back the charging gun line after a user pulls out a gun, and is more convenient, more efficient, cleaner and safer.

The utility model discloses a concrete reinforcement detection device for construction project quality detection, and relates to the technical field of concrete reinforcements, the concrete reinforcement detection device comprises a box body, the left side of the box body is movably connected with a box door through a hinge, the box body is internally provided with a buffer mechanism, and the left side of the buffer mechanism is detachably provided with a detection equipment body; a locking lifting mechanism is arranged at the top of the box body, and a bearing mechanism is arranged at the top of the inner side of the box body; the locking lifting mechanism comprises an inverted-U-shaped handle, an outer sleeve plate and a reset spring. The inverted-U-shaped handle is arranged at the top of the box body in a sliding and penetrating mode. The portable concrete reinforcement detection device can be carried on the back to move and can also be lifted to move at the same time, in addition, the carrying mechanism can be automatically triggered and stored in the lifting process, a user can be prevented from being stumbled while the floor is prevented from being dirtied, the portable concrete reinforcement detection device is more convenient to use in actual use, and normal proceeding of the concrete reinforcement detection process is guaranteed.

The invention relates to a debugging method and device for a magnetic valve type controllable shunt reactor, and belongs to the technical field of power systems. According to the method, the trigger pulse frequency during normal operation of the magnetic valve type controllable shunt reactor is adjusted, and the number of trigger pulses is reduced under the condition that the trigger angle of the thyristor is not changed, so that the trigger pulses subjected to frequency reduction can reduce the magnitude of direct-current exciting current in the magnetic valve type controllable shunt reactor, and the frequency of the direct-current exciting current in the magnetic valve type controllable shunt reactor is reduced. And the change trend of the magnitude of the three-phase current can be accurately reflected. According to the method, the trigger pulse in normal operation is subjected to frequency division processing, so that the problem that the phase of the reactor is incorrect when the reactor is electrified and debugged for the first time can be effectively solved, tripping or damage of the reactor caused by the phase can be avoided, field installation and debugging personnel are helped to carry out troubleshooting, and the debugging efficiency of the magnetic valve type controllable shunt reactor complete equipment is improved.

This application relates to the field of automotive mold manufacturing technology, and in particular to a mold cleaning device, including a housing, a protective mechanism, a drive mechanism, and a cleaning gun placement mechanism. The housing consists of a base, an outer cover fixedly mounted on the upper surface of the base, and a front opening on the front of the outer cover and a top opening on the top of the outer cover. The protective mechanism consists of a front protective component located at the front opening and a top protective component located at the top opening. The front protective component includes a groove on the inner wall of the outer cover, and a left protective door and a right protective door that slide and engage with the inner wall of the groove via rollers. The mold cleaning device described in this application employs a linkage design between the left and right protective doors and a foldable top plate, synchronously controlled by the drive mechanism, to automatically open and close the openings during mold loading and unloading, effectively isolating high-pressure fluid splashing and diffusion.

The utility model relates to the field of manned conveying device industry, in particular to a moving sidewalk. The technical problems that a conventional moving sidewalk is not convenient enough to overhaul and maintain, and pedestrians are prone to slipping on the sidewalk due to rainwater or silt on shoe soles are solved. According to the technical scheme, the moving sidewalk comprises a sidewalk assembly, a handrail assembly, a pedal assembly and a cleaning assembly. Through the arrangement of the access hole formed in the side face of the moving sidewalk and the pedal assembly easy to disassemble and assemble, the sidewalk can be rapidly overhauled and maintained, through the arrangement of the cleaning assembly and the dual cleaning of the ground mat and the drying machine, rainwater, silt and the like attached to the soles of pedestrians can be thoroughly cleaned, and the service life of the moving sidewalk is prolonged. And the anti-skid rubber blocks are arranged on the pedal assemblies, so that pedestrians are prevented from being injured due to slipping and falling down when climbing on the moving sidewalk, and the problems are solved.

The application relates to the technical field of equipment installation, and particularly discloses a pit edge mounting base and a construction method, which comprises a pre-buried plate, the pre-buried plate is installed on the bottom of the inner wall of a pouring groove arranged at the edge of a pit body, a supporting piece is fixedly installed on the pre-buried plate, a guard angle steel is installed on the top of the supporting piece, the top of the guard angle steel is flush with the top of the pouring groove, an angle steel supporting lug is fixedly connected to the side of the guard angle steel close to the pit, a gap is formed between the upper surface of the angle steel supporting lug and the upper surface of the guard angle steel, and the gap is used for mounting a pit cover plate; the pre-buried plate is used for connecting the structure of the pit foundation, the top of the pre-buried plate is provided with a civil engineering formwork during the civil engineering process, so that the pre-buried plate can be effectively leveled through the civil engineering formwork; and the pre-buried plate is arranged in a plane, after pouring the foundation, no protrusion is formed, and compared with the inclined steel bar used as the pre-buried piece, the safety hidden danger of tripping the installation personnel is eliminated.

The utility model discloses a quick shackle structure which comprises a female buckle, the female buckle comprises an upper fixing base and a lower fixing base which are connected with each other, a buckling hole facing the lower fixing base is formed in the top of the upper fixing base, and an inserting opening penetrating through the buckling hole is defined by the side portion of the upper fixing base and the side portion of the lower fixing base. The male buckle comprises a top cover, the top cover extends to be provided with an insertion piece capable of being inserted into the insertion opening, the insertion piece is provided with a movable elastic piece, the elastic piece is provided with an elastic pressing piece, and when the male buckle is connected with the female buckle in a buckled mode, the end of the elastic piece clamps the buckling hole, and the pressing piece is pressed downwards to abut against the lower fixing base. The device is ingenious in structural design, double insurance can be achieved during use, tripping can be prevented, the elastic piece is obliquely and upwards jacked up, collapse tripping is prevented, the pressing piece downwards presses the female buckle to achieve elastic limiting, and half tripping caused by the fact that the elastic piece ascends due to the fact that the male buckle bears too large tensile force is prevented.

The embodiment of the invention provides a vehicle trunk carpet and a vehicle, and relates to the technical field of vehicle structures. The vehicle comprises the vehicle trunk carpet, and the vehicle trunk carpet comprises a fixed table, a lifting driving assembly and a lifting table. The fixing table is used for being installed on a luggage case, the lifting driving assembly is installed on the fixing table, the lifting table and the fixing table are arranged at intervals in the height direction and connected with the lifting driving assembly, and the lifting driving assembly comprises a driving part, a first scissor connecting rod, a synchronous rod and a second scissor connecting rod. The first scissor connecting rod and the second scissor connecting rod are arranged on the synchronous rod at intervals in the axis direction of the synchronous rod, and the driving piece can drive the synchronous rod to rotate so that the first scissor connecting rod and the second scissor connecting rod can drive the lifting table to move in the height direction so as to reduce or eliminate the step difference between the lifting table and the upper surface of the seat. Therefore, the difficulty of the crew member entering and exiting the vehicle or placing luggage is reduced, and the crew member can be effectively prevented from being stumbled.

The utility model relates to a transmission structure of a wet-type rod mill. The transmission structure comprises an output motor, a coupler, a pinion device, a bull gear and a barrel body, flanges are arranged at the two axial ends of the barrel, and the large gear is installed at the axial inner end of the flange on one side. The output motor is a permanent magnet motor and is installed on a motor base on the side of the barrel, the coupler is an elastic pin coupler, an output shaft of the permanent magnet motor is connected with the small gear device through the elastic pin coupler, the small gear device at least comprises a small gear meshed with the large gear, and the small gear is meshed with the large gear. The permanent magnet motor can drive the small gear to rotate to drive the large gear and the barrel to rotate. The permanent magnet motor and the elastic pin coupling are adopted to provide torque to drive the rod mill barrel to rotate, power consumption is remarkably reduced, high-inertia load generated when the rod mill is started is easily overcome, impact load and instantaneous vibration of the rod mill barrel are absorbed through the elastic pin coupling, a motor shaft and a transmission system are protected, and the service life of the rod mill is prolonged. The motor bearing life is prolonged.

The application discloses an offshore oilfield island power grid control method and system. The method establishes a master-slave power supply strong coupling model, dynamically corrects the available capacity of a waste heat generator set, implements a three-level reverse power defense strategy based on the load margin of a main power supply, actively performs power limiting or off-grid control on wind power under a low-load working condition to guarantee the safety of the main power supply. The core of the application is to perform wind-fire-storage collaborative control based on the thermal inertia of waste heat, utilize an energy storage device to perform fast bidirectional power compensation, effectively fill the time difference between the adjustment action of a gas turbine and the response lag of a waste heat unit, realize system power suppression under the premise of avoiding load shedding, and simultaneously adopt a periodic rolling pre-computation mechanism to process faults. The application effectively solves the thermal response lag and reverse power risk problems under multi-energy coupling, and significantly guarantees the operation stability of an island power grid.

The utility model relates to the technical field of household articles, specifically disclose a kind of outdoor basket of being convenient for assembly, including basket body, the upper portion of basket body is provided with support mechanism, basket body includes two handrails, the lower end of the side of handrail is provided with multiple linear array distribution's sit pole, the side of sit pole is provided with multiple back pole, the upper portion middle part of handrail is provided with first connecting seat, support mechanism includes two second connecting seat, the upper end both sides of two second connecting seat are provided with connecting shaft, first hanging pole is arranged between two second connecting seat, second connecting seat is provided with second hanging pole in the end away from first hanging pole, the end of second hanging pole away from second connecting seat is provided with support seat, the both ends of support seat are rotatably connected with support rod, the side of support rod away from basket body is provided with connecting rod, the basket can avoid user being tripped by the component in support mechanism, ensure the safety of the basket use and the use experience of user.

This invention discloses a five-dimensional lens adjustment device and its usage method for a vertical laser interferometer, relating to the field of optical instrument technology. The device includes a base assembly and a laser interferometer, a three-dimensional translational large-span adjustment layer, a two-dimensional attitude micro-step adjustment layer, and a control module. The control module is configured to execute a two-way collaborative closed-loop adjustment strategy: preprocessing the interferogram frames acquired by the laser interferometer and extracting the central field-of-view feature parameters, evaluating the fringe contrast and zero-position offset; after the three-dimensional translational large-span adjustment is completed, initiating the pitch and yaw two-dimensional attitude micro-step adjustment, reusing the same feature calculation results from the first stage, and using zero-position offset feedback to compensate for the previous accumulated drift. The device of this invention adopts a hierarchical architecture of a three-dimensional translational large-span adjustment layer and a two-dimensional attitude micro-step adjustment layer. The functions of the two layers are decoupled and clearly divided, reducing the complexity of the control system and improving the efficiency and accuracy of lens adjustment.

The application discloses an oscillation suppression method based on control bandwidth switching, which is applied to one or more voltage source converters of a flexible direct current power transmission system, frequency switching set value Fset is determined according to converter impedance characteristics of a first set of low control bandwidth parameters and a second set of high control bandwidth parameters, it is judged whether the oscillation frequency F of the current operation mode is greater than the frequency switching set value Fset, if yes, the controller of the converter is set to the low control bandwidth parameters, otherwise, the controller of the converter is set to the high control bandwidth parameters. By using the oscillation suppression method, the converter presents positive resistance near the oscillation frequency, additional equipment is not needed, and tripping caused by oscillation can be avoided.

The utility model relates to grape transportation box technical field, and disclose a grape transportation box with fresh -keeping function, including the bearing box, the bearing box is rectangular frame, the inside lower position of bearing box is provided with detachable support plate, the upper side of support plate is equidistant and is provided with a plurality of hexagonal through slot, the upper side of support plate is provided with a plurality of mounting cavities, and the inside of mounting cavity all has the heat preservation foam of clamping, in the utility model, the protection shell is equipped with in bearing box outside, constitutes the second heat preservation layer, and its airtight structure further enhances the overall heat insulation effect, and the synergistic effect of double heat preservation design greatly prolongs the maintenance time of low temperature environment, ensures that grape is in stable suitable low temperature high humidity environment in the transportation way. Meanwhile, the rigid material of support plate and protection shell strengthens the compressive strength of box body together, prevents the grape breakage caused by the extrusion of upper layer box body when stacking, solves the pain point that traditional packaging is easy to deform, and the short service life of heat preservation.

The utility model relates to connecting assembly and electronic equipment, wherein connecting assembly is applied to between first component and second component of assembly connection, and connecting assembly includes slide buckle connecting component, and slide buckle connecting component includes the card slot for forming in the side of first component towards second component, and the buckle part for connecting in the side of second component towards first component, the buckle part is configured to move after inserting corresponding card slot to be clamped in the card slot, the buckle part includes front end and back end, the front end is the front one end of buckle part along the direction of interlocking movement, and the back end is the rear one end of buckle part along the direction of interlocking movement, under the assembly in place state, the line direction of front end and back end is configured with the length direction of first component or second component and presents a angle of not equal to 90 degrees. This connecting assembly can reliably connect first component and second component together, and effectively reduces the probability of separation after the whole drop of first component and second component assembly.

The utility model relates to engineering equipment technical field, concretely is a kind of girder mobile trolley based on battery power supply drive, including frame, charging module and a plurality of interval arrangement's drive mechanism, frame is made of several mutually connected assembly type vehicle body;Charging module is installed on frame, including charging port and charging battery, charging port is electrically connected with charging battery, every drive mechanism includes the drive wheel of installation in the bottom of frame, the drive motor of transmission connection with drive wheel and the driver of electric connection with drive motor, charging battery is electrically connected with corresponding drive motor by driver.The girder mobile trolley provided by the utility model is powered by charging battery, does not need very long cable to power supply, avoids the accident, such as stumbling work personnel or damaging other equipment when girder mobile trolley moves, because cable is too long.

The invention provides a voltage sag protection circuit and method for an alternating current contactor, and the method comprises the steps: connecting a power input end of an alternating current contactor coil with an alternating current power supply through a first switching tube to form a first loop, and connecting a second switching tube and a first resistor to form a second loop; a third switch tube is connected to a high-voltage capacitor for power supply to form a third loop; when voltage sag occurs in the alternating current power supply, a control signal is output to control the switch tube to act, so that the first loop is controlled to be sequentially switched to the second loop, and the third loop is connected with the power supply input end of the alternating current contactor coil; the booster circuit is used for outputting the second direct-current voltage to the high-voltage capacitor, and the high-voltage capacitor maintains the fourth direct-current voltage after discharging and voltage reduction and outputs the fourth direct-current voltage to the power input end of the alternating-current contactor coil. The direct-current 300V switching voltage is provided for the contactor coil through the high-voltage capacitor during voltage sag, the 110V voltage can still be kept after discharging and voltage reduction, and an alternating-current contactor with the voltage being 300A or above can be kept in a closed state.

The present application belongs to the field of industrial detection equipment and facilities, and proposes an industrial environment sampling detection device, which comprises a double-path atmospheric sampler, the double-path atmospheric sampler comprises an instrument main body and two sampling tubes, the bottom of the instrument main body is provided with a rotating arm, the end of the rotating arm away from the instrument main body is provided with a suspension arm, the top end of the suspension arm is used to be nested with a sampling port of an industrial tower, the suspension arm is provided with a sampling cover at the position opposite to the sampling port, the sampling cover is provided with at least two inlet openings used to cooperate with the sampling tubes, the suspension arm is provided with a clamping mechanism which is slidably matched with the suspension arm, and the clamping mechanism and the suspension arm are both provided with lug ears which are matched with the sampling tubes. The present application has the advantages of reasonable design, simple structure, high space utilization, convenience in sending the sampling tubes into the sampling port, and improvement in instrument safety and detection sealing performance.

This invention discloses a screw fracture prevention method based on vibration testing of wall-mounted products, comprising: selecting screws that meet predetermined standards; using an accelerometer to monitor the vibration value at the installation point of the wall-mounted equipment in real time; adjusting the input control of the test bench; conducting a pre-test before the formal test, and then tightening the screws a second time after the pre-test; during the formal test, monitoring the root mean square value of acceleration or the peak value of the time-domain signal at the equipment installation point in real time, judging the screw fracture risk based on the root mean square value of acceleration or the peak value of the time-domain signal, and terminating the test when a fracture risk is detected. By adjusting the input control of the test bench, the vibration input level is controlled to prevent overtesting, reducing the risk of screw fracture due to vibration overload from the source. Pre-testing and secondary tightening eliminate preload loss, reduce the risk of stress concentration, and improve the uniformity and stability of preload. This achieves early warning of fracture risk, gaining time for downtime and loss mitigation.

The present invention discloses a coal feeder speed measuring device, which mainly relates to the field of thermal power generation. It comprises a transmission shaft, a dial plate is provided on the transmission shaft, a collar is provided on the transmission shaft, the dial plate is located inside the collar, a mounting groove is provided radially on one side of the collar and penetrates the collar, a spherical head component that can be pushed by the dial plate is provided at one end of the mounting groove close to the transmission shaft, a vibrating plate is provided at one end of the mounting groove away from the transmission shaft, a first spring is provided between the spherical head component and the vibrating plate, a vibration detector is provided on the outside of the vibrating plate, a limit ring is provided on one end of the transmission shaft away from the coal feeder motor, and a base is provided at the bottom of the limit ring. The beneficial effect of the present invention is that the device for measuring the speed is arranged outside the coal bunker, is not directly connected to the motor, and the speed data is obtained indirectly through the vibration frequency, thus avoiding the phenomenon of tripping of the traditional installation measurement method after being affected by the outside, and improving the accuracy of the measurement result.

This utility model relates to the field of power transmission and distribution technology, specifically a support component and a novel artificial bird nest for power transmission and distribution lines. The component includes a support ring; a support base located directly below the support ring, with the outer diameter of the support base being smaller than the diameter of the support ring; and a connecting rod located between the support ring and the support base, with its upper end connected to the support ring and its lower end positioned on the support base. This utility model can be installed on power transmission lines to install and support bird nests, facilitating the guidance of birds away from the power line conductor attachment points to stop and rest, thus preventing short circuits and tripping of the power lines.

The utility model belongs to the technical field of door fence processing and production, and discloses an intelligent door fence which comprises a door fence frame provided with a diffuse reflection sensor used for recognizing the door opening direction. The door fence body swings relative to the door fence frame to be opened and closed; the motor is arranged at the hinged position of the door fence frame and the door fence body, is electrically connected with the diffuse reflection sensor and rotates forwards or backwards according to signals of the diffuse reflection sensor; the door blocking structure is arranged on the door fence door body and corresponds to the diffuse reflection sensor in position; the door blocking structure comprises a door blocking sleeve connected with the door fence body, two opposite surfaces of the door blocking sleeve are provided with blocking strips, the two blocking strips are connected through a rotating shaft, and only one side of the blocking strips on the two sides is close to the diffuse reflection sensor. The diffuse reflection sensor senses the barrier strip and transmits a signal to the motor, the motor is controlled to rotate forwards or reversely, and the door opening direction is controlled. The diffuse reflection sensor is matched with the door blocking structure, the door opening direction is controlled, and the bidirectional door opening function is achieved.