330 results about "Glass ball" patented technology

The invention relates to the technical field of comprehensive pipe galleries, and provides a comprehensive pipe gallery cable fire intelligent identification and prevention and control linkage system. In the system, fire simulation is carried out on a comprehensive pipe gallery cable through a cable fire simulation device; the fire behavior of the cable in the pipe gallery is monitored in real time through the image acquisition unit, and the acquired simulated fire image information is transmitted to the deployed fire identification model in real time for fire identification, so that the fire identification result of the fire identification model is judged through the deployed fire early warning model. A fire extinguishing instruction or an early warning instruction is sent out according to the judgment result; further, the fire extinguishing linkage device responds after receiving the fire extinguishing instruction, and a self-made fire resisting shutter with a flexible steel brush is firstly started to block a fire point area; and then a telescopic end of an electric push rod mounted at the top of the pipe rack quickly extends out to crush a temperature sensing glass ball of the suspension type fire extinguisher, so that quick linkage prevention and control of the pipe rack cable fire are realized.

The invention relates to a multi-layer sound absorption and insulation material and a preparation method thereof.The multi-layer sound absorption and insulation material comprises an inner micropore sound absorption layer, a vibration attenuation damping layer, a sound insulation plate layer, a main frame layer, a sound absorption material layer and an outer steel plate layer which are sequentially arranged from inside to outside, a plurality of hollow glass balls are evenly arranged in the main frame layer, and the sound absorption material layer is obtained by pressing multiple layers of composite sound materials; the composite acoustic material comprises the following raw materials in parts by weight: 10-15 parts of fibers, 4-8 parts of an adhesive, 3-8 parts of a foaming agent, 1-3 parts of a flame retardant, 10-20 parts of a plasticizer, 10-20 parts of resin, 1-3 parts of a lubricant, 5-10 parts of an organic sound absorber and 1-5 parts of an antioxidant. According to the sound absorption and insulation material, the inner micropore sound absorption layer, the vibration reduction damping layer, the sound insulation plate layer and other multi-layer structures are arranged from inside to outside, all the layers have a synergistic effect, sound wave propagation can be dealt with from multiple aspects, and the sound absorption and insulation material is suitable for various places with requirements for the acoustic environment, such as the fields of building sound insulation, industrial equipment noise reduction and the like.

The invention discloses a glass bead defect detection method based on improved Yolov11, and the method comprises the steps: S1, data collection: obtaining a plurality of images of different glass beads, and carrying out the classification marking of defects in the images to form a data set; s2, model construction: establishing an improved YOLOv11 model; s3, pre-processing and defect detection: S31, pre-processing: sequentially carrying out ROI region extraction, brightness correction and noise removal on each image; and S32, defect detection: adopting an improved YOLOv11 model to respectively detect all the preprocessed images of the single glass bead, and when at least one unqualified prediction frame exists in all the images of the single glass bead, considering that the glass bead is an unqualified product, otherwise, considering that the glass bead is a qualified product. The method can efficiently and accurately identify the target defect in the glass bead, is good in robustness, and especially has remarkable advantages for small-target glass bead defect detection.

The automatic blowing and blocking valve comprises a valve body and an end cover, an air inlet cavity and an air outlet cavity which are communicated with each other are formed in the valve body, a pushing cavity is formed between the end cover and the valve body, a first air outlet communicated with the air outlet cavity is formed in the valve body, and an anti-blocking assembly is arranged on the lower portion of the first air outlet; the anti-blocking assembly comprises a shell, and an air outlet II and an anti-blocking valve assembly are arranged in the shell; the anti-blocking valve assembly is arranged between the air outlet I and the air outlet II; the anti-blocking valve assembly comprises an elastic piece, a base plate piece, an anti-blocking valve sealing ring and a connecting bolt, a groove is formed in the inner ring of the anti-blocking valve sealing ring, the elastic piece is arranged on the lower portion of the base plate piece and connected with the base plate piece through the connecting bolt, and the base plate piece is arranged in the groove of the anti-blocking valve sealing ring in a sleeved mode. According to the scheme, an anti-blocking isolation structure of a tower spring and a glass ball in the prior art is replaced by the designed anti-blocking assembly, it is effectively guaranteed that the problem that the tower spring is stuck and fails due to the fact that ash is accumulated on the tower spring is solved, and it is guaranteed that the blowing assisting valve can work stably.

The invention relates to the technical field of space exploration and lunar soil experiments, in particular to a melting centrifugal type mineral particle morphology remodeling device and a lunar soil glass ball preparation method. The device comprises a mineral protolith high-temperature melting system, a mineral melting slurry conveying system, a centrifugal mineral particle size control system and a mineral particle cooling and morphology remodeling system. The preparation method of the lunar soil glass ball comprises the following steps: adding basalt mineral powder and mineral melting additive powder into a melting centrifugal mineral particle morphology remodeling device to obtain simulated lunar soil glass balls with different particle sizes, and performing morphology transformation on the simulated lunar soil glass balls with different particle sizes by using an ion beam gun. And the lunar soil glass ball state of the impact melting history is reduced. According to the method, high-precision engineering mass production of components, morphology and mechanical properties of the lunar soil glass balls is realized through a fusion centrifugal forming and ion beam surface control composite process, and the problem of soil mechanical behavior deviation caused by morphology distortion of existing simulated lunar soil is solved.

This application relates to the technical field of utility tunnels, and provides an intelligent identification and prevention and control linkage system for cable fires in utility tunnels. In this system, a cable fire simulation device is used to simulate cable fires in the utility tunnel; an image acquisition unit is used to monitor the cable fire behavior in the tunnel in real time, and the collected simulated fire image information is transmitted to the deployed fire identification model in real time for fire identification, so as to judge the fire identification results of the fire identification model through the deployed fire warning model, and issue a fire extinguishing command or a warning command according to the judgment results; furthermore, after receiving the fire extinguishing command, the fire extinguishing linkage device responds, and the self-made fireproof rolling shutter with flexible steel brushes is first activated to block the fire point area; subsequently, the telescopic end of the electric push rod installed on the top of the tunnel quickly extends to break the heat-sensitive glass ball of the suspended fire extinguisher, realizing the rapid linkage prevention and control of cable fires in the tunnel.

The utility model relates to the technical field of unmanned vehicle monitoring, and discloses an unmanned vehicle driving monitoring device which comprises a monitoring shell, a glass spherical outer cover is fixed on the monitoring shell, an installation cylinder is fixed in the monitoring shell, a plurality of air inlets are formed in the installation cylinder, and a plurality of air outlets are formed in the installation cylinder. An air exhaust structure is arranged in the mounting cylinder, and an air injection structure is arranged on the monitoring shell. When the device is used, the air jet hole in the device can effectively blow away rainwater attached to the surface of the monitoring device by discharging air, so that a lens of a monitoring picture can be kept clear and is not influenced by the rainwater, and the reliability and the efficiency of a monitoring system in rainy days are improved.

The utility model discloses a fire-fighting sprinkler which comprises a sprinkler body, the sprinkler body is of a tubular structure, external threads are arranged on the peripheral face of the sprinkler body, a connecting piece is arranged at the bottom of the sprinkler body and fixedly connected with an annular plate through a plurality of connecting rods, and a plurality of first spoilers extending in the radial direction are fixedly connected to the peripheral face of the connecting piece. A connecting piece is arranged at the lower end of the spray head, a limiting ring is fixedly connected to the inner circumferential face of the lower end of the spray head, a sealing plug is arranged at the bottom end of the interior of the spray head, a thermosensitive glass ball is arranged between the connecting piece and the sealing plug, and a protection pipe is arranged on the outer side of the thermosensitive glass ball in a sleeved mode. The heat-sensitive glass ball is arranged above the connecting piece, after the heat-sensitive glass ball is heated and broken, the sealing plug falls under the action of pressure, fire fighting water is sprayed out, and the heat-sensitive glass ball is prevented from being damaged by external collision by arranging the telescopic protection tube outside the heat-sensitive glass ball.

The utility model belongs to the technical field of extraction equipment, in particular to extraction equipment for refining vinyl ethyl ether, which comprises a vertical rod seat and a glass ball kettle, the vertical rod seat comprises a sliding rod and a bottom plate, and a display panel is mounted at the upper end of the vertical rod seat. And a sliding rod of the vertical rod base slidably penetrates through the interior of the first connecting plate and the interior of the second connecting plate, and a stirring motor is installed on the upper side of the first connecting plate. According to the extraction equipment for vinyl ether refining, a double-thread screw is rotated, and a first connecting plate and a second connecting plate are far away from each other, so that a worker can quickly take down a glass ball kettle, place the glass ball kettle on the upper side of a connecting ring plate and reversely rotate the double-thread screw, and a connecting block completely enters a butt joint groove, so that a stirring rod normally performs stirring operation; a worker can conveniently dismount or mount the glass ball kettle of the extraction equipment, the knob is rotated, the two supporting plates can be moved out of the support of the vertical rod seat, and the stability of the extraction equipment can be enhanced through the supporting plates.

The invention discloses a heat-insulating hollow microsphere with high strength as well as a preparation method and application of the heat-insulating hollow microsphere. The structure of the hollow microsphere comprises a hollow core, and a glass ball shell layer, a metal silver layer and a metal oxide layer which are sequentially arranged from inside to outside, wherein the metal oxide layer is composed of a plurality of metal oxide areas, and the metal oxide areas are physically isolated from one another so as to expose part of the outer surface of the metal silver layer. The heat-insulating hollow microsphere provided by the invention has low heat conductivity and infrared emissivity, and also has relatively low density and high mechanical stability.

The utility model relates to an early warning device suitable for fire prevention and explosion prevention. Comprising a cabinet body and an early warning assembly, the early warning assembly is arranged on the outer side wall of the cabinet body, the early warning assembly comprises a ventilation component and a warning piece, the ventilation component comprises a ventilation piece, a plurality of transversely-through ventilation channels are arranged in the ventilation piece, and a warning seat is arranged in the middle of the ventilation piece; the warning component comprises a warning plate, a mounting seat and a warning lamp, the warning plate is a transparent plate embedded in the warning seat, the warning lamp is detachably connected to the mounting seat, and the warning lamp faces the warning plate. According to the utility model, air inside and outside the electric cabinet is accelerated to flow through the warning seat, the thermosensitive glass balls in the warning seat present different colors when the temperature changes, and light irradiates the thermosensitive glass balls through the warning plate and is refracted and displayed on the warning plate through the through holes, so that a worker can see the color change of the warning plate on the electric cabinet when walking in a workshop; therefore, early warning can be carried out in the first time, and excessive temperature rise in the electric cabinet is prevented.

The invention relates to a shield tunnel stratum adaptive foaming agent based on gas-liquid regulation and a preparation method thereof, and belongs to the technical field of shield muck improvement. The invention provides a shield tunnel stratum adaptive foaming agent based on gas-liquid regulation and control, and also provides a preparation method of the shield tunnel stratum adaptive foaming agent. The foaming agent is prepared by adopting dual-system adaptation and a dispersing type formula (K < 12 > + CTAB + Na2CO3 or K < 12 > + OP-10 + Na4P2O3), so that the problem of clay agglomeration is solved, and a polymeric formula (K < 12 > + AES + CMC or K < 12 > + OP-10 + guar gum) is used for enhancing the cohesive force of sandy soil; gas-liquid cooperative control is adopted, and the foaming ratio is larger than 22 when the gas-liquid ratio is 121: 1 and the pressure is 0.3 MPa through mixing bin structure optimization and glass ball filling refinement; the cost is reduced by 80%, and the industrial production raw material cost is less than or equal to 442 yuan / ton.

The invention discloses an automatic fire extinguishing system for a kitchen, which relates to the technical field of fire-fighting equipment manufacturing and application and comprises a pipe network, an automatic valve, a fire extinguishing agent storage tank and a spray head. A filter, a valve and a flow switch are arranged on the pipe network, the filter, the valve and the flow switch are connected to the front end of an automatic valve of the pipe network in series, fire extinguishing agent storage tanks, spray heads, sealing adapters and protective caps are symmetrically installed on the two sides of the automatic valve, and a standard temperature sensing glass ball is arranged under a valve body of the automatic valve. A pipe network continuous water supply mode is adopted to solve the problem of fire extinguishing and reburning, and efficient fire extinguishing and continuous cooling are achieved. When the building floor is too high or the system is installed at the most unfavorable point of the pipe network, the pressure of the pipe network is too low, a supercharging device can be configured. The kitchen fire extinguishing device adopts an innovative technology of integrating the fire extinguishing agent storage tank and the spray head, is different from a traditional kitchen fire extinguishing device in which the fire extinguishing agent storage tank and the spray head are mounted at different positions, and is higher in fire extinguishing response speed and fire extinguishing efficiency.

The utility model provides a fire-fighting spray header with a quick connection structure, particularly relates to the technical field of fire-fighting spray headers, and comprises a fire-fighting spray header body, a screwed joint on the fire-fighting spray header body is in threaded connection with a water supply pipe, and after the screwed joint is screwed, the screwed joint extrudes a sealing gasket, so that the fire-fighting spray header with the quick connection structure is formed. After production is completed, a protective cover is connected to the outer side of a thermosensitive glass ball in a clamped mode through a first C-shaped clamping groove, then a connecting column on a protective plate is inserted into a through hole, during insertion, a first anti-disengaging ring and a second anti-disengaging ring are changed, and after insertion is completed, the protective cover is connected with the water supply pipe in a clamped mode. When the fire-fighting spray head body is installed, the first anti-falling ring and the second anti-falling ring rebound, the outer side of the first anti-falling ring is attached to the end opening of the through hole, the limiting effect after connection is achieved, and the protective cover and the protective plate are both made of rubber, so that the thermosensitive glass ball is better protected, and the thermosensitive glass ball is prevented from being collided and damaged when the fire-fighting spray head body is installed.

The present invention belongs to the technical field of the firing sealing of lamp bulbs. Disclosed is a firing sealing apparatus for a filament lamp bulb, the firing sealing apparatus comprising a firing apparatus, wherein a LOGO printing apparatus is provided on one side of the firing apparatus, a sealing part is joined and fixedly connected between the firing apparatus and the sealing part, and a robotic arm is fixedly connected to the outer wall of the top end of the sealing part. A motor drives a bidirectional threaded rod to rotate, so as to drive two clamping plates to move in opposite directions until the two clamping plates come into contact with the tube body of a glass bulb tube, and the tube body is subjected to re-cutting in an abutting manner at a unified position to avoid inconsistencies in tube body length and bottom shape among glass bulb tubes. A press-tilting plate tilts to drive a trumpet grinding column on the other side of the top end of the press-tilting plate to move upwards, and a threaded-hole extendable plate moving downwards enables a screw rod II to rotate so as to wind a hemp rope, thus driving the trumpet grinding column to rotate. The rotating trumpet grinding column can perform rotational grinding on the bottom end of the glass bulb tube, such that when the residual heat remains and the bottom end of the glass bulb tube is not yet set, the bottom end of the glass bulb tube undergoes rotational grinding to be in a smooth state.

1. The name of this design product: Portable lamp (glass ball). 2. Purpose of this design product: for lighting. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 1.

The utility model belongs to the technical field of battery temperature management, and particularly relates to an energy storage cabinet cooling and fire fighting combined thermal management system which comprises a control system and a plurality of battery modules arranged in a PACK box, a temperature sensor and a liquid cooling assembly are arranged in the PACK box, and the temperature sensor is connected with the control system; the liquid cooling assembly is located at the bottom of the battery module, the liquid cooling assembly comprises a liquid cooling structure and a plurality of glass balls, a cold source assembly is arranged on the outer side of the PACK box, the cold source assembly is connected with the interior of the liquid cooling structure through a pipeline, and the cold source assembly is used for actively cooling the battery module by using a refrigerant conveyed into the liquid cooling structure; the glass ball is mounted on the surface of the liquid cooling structure; according to the heat management system, heat exchange and cooling can be carried out through a refrigerant in the liquid cooling structure and the battery module, meanwhile, thermal runaway of the battery can be prevented, fire extinguishing is carried out by triggering explosion of the glass balls, and the fire extinguishing requirement of the energy storage cabinet is met.

The utility model belongs to the technical field of fire fighting, and particularly relates to a fire-fighting spray header which comprises a threaded pipe and a fixing plate, the fixing plate is fixedly connected to the lower side of the threaded pipe, the lower end of the fixing plate is connected with a dismounting mechanism, the dismounting mechanism comprises a dismounting unit and a spraying unit, the dismounting unit is arranged at the lower end of the threaded pipe, and the spraying unit is arranged on the lower side of the threaded pipe. The spraying unit is arranged at the outer end of the dismounting and mounting unit, the dismounting and mounting unit comprises a connecting ring, a round frame, a connecting rod, a water splashing disc, a glass ball body, a threaded rod and a cylinder, and the connecting ring is connected to the lower end of the fixing plate. According to the fire-fighting spray head, when a fire disaster occurs, the temperature rises, so that expansion liquid in the glass ball body expands to break the glass ball body, and a first through hole in the fixing plate and a second through hole in the round frame are not closed any more; and fire-fighting water enters the round frame from the threaded pipe through the first through hole and then is sprayed to the water splashing disc from the second through hole to be splashed and sprayed all around to extinguish fire.

The invention relates to the technical field of photovoltaic power generation, and discloses a photovoltaic panel light condensation device and a light condensation method thereof.The photovoltaic panel light condensation device comprises a main body, guide rods are fixedly connected to the four corners of the top of the main body respectively, light condensation plates are rotationally connected to the ends, away from the main body, of the guide rods, and flexible rings are rotationally connected among the four light condensation plates. When the four light gathering plates rotate, the rotating light gathering plates can drive the hollow frame to ascend through the rotating plate, when the hollow frame ascends, the glass ball body in the middle can be driven to ascend synchronously, and the glass ball body extends out of the tops of the light gathering plates; sunlight from different directions can be gathered on the photovoltaic panel through the circular glass ball body, so that the illumination intensity received by the photovoltaic panel is enhanced, and the power generation efficiency of the photovoltaic panel is improved.

The invention discloses agricultural irregular seed pelleting equipment and a control method thereof. The equipment is provided with a rotating kettle, a spraying device, a powder supply device and a seed feeding mechanism, the spraying device, the powder supply device and the seed feeding mechanism can respectively spray water into the rotating kettle, supply pelleting powder and feed seeds to be pelleted; the device further comprises a pitching mechanism. The ball throwing mechanism comprises a ball bin and further comprises a first metering mechanism connected with the ball bin and the rotating kettle. The seed feeding mechanism comprises a second metering mechanism; the first metering mechanism and the second metering mechanism are both connected with a control system, and the control system can control the proportion of the throwing number of the glass balls and the throwing number of the seeds based on the first metering mechanism and the second metering mechanism. By arranging the ball throwing mechanism, when the seeds are pelletized, glass balls are thrown into the rotating kettle to assist the pelletizing operation, so that the seeds with coating layers can be prevented from being adhered to one another, the coating layers outside the seeds have compactness, and the pelletized seeds are high in quality.

The utility model discloses an automatic blowing and blocking valve for an ash pipeline, which comprises a valve body and an end cover, the valve body is provided with an air inlet cavity and an air outlet cavity which are communicated with each other, a pushing cavity is arranged between the end cover and the valve body, the valve body is provided with an air outlet I communicated with the air outlet cavity, and the lower part of the air outlet I is provided with an anti-blocking component; the anti-blocking assembly comprises a shell, and an air outlet II and an anti-blocking valve assembly are arranged in the shell; the anti-blocking valve assembly is arranged between the air outlet I and the air outlet II; the anti-blocking valve assembly comprises an elastic piece, a base plate piece, an anti-blocking valve sealing ring and a connecting bolt, a groove is formed in the inner ring of the anti-blocking valve sealing ring, the elastic piece is arranged on the lower portion of the base plate piece and connected with the base plate piece through the connecting bolt, and the base plate piece is arranged in the groove of the anti-blocking valve sealing ring in a sleeved mode. According to the scheme, an anti-blocking isolation structure of a tower spring and a glass ball in the prior art is replaced by the designed anti-blocking assembly, it is effectively guaranteed that the problem that the tower spring is stuck and fails due to the fact that ash is accumulated on the tower spring is solved, and it is guaranteed that the blowing assisting valve can work stably.

The utility model discloses a kind of high-silica glass fiber ball drop ball collecting devices, it is related to glass fiber processing technical field, including support and box, box includes closed frame and ventilation frame, support is installed in closed frame bottom, ventilation frame is connected in closed frame top and inside intercommunication, closed frame inside is by several inclined plate inverted trapezoidal groove is formed, trapezoidal groove bottom of closed frame side wall is equipped with ball outlet, pull door is equipped at ball outlet;Ventilation frame side and top are each equipped with metal net, the metal net on ventilation frame top is equipped with ball inlet, ball inlet is connected with ball conveying guide rail, and the side opposite to the outlet of ventilation frame and ball conveying guide rail is installed with buffer plate.The utility model is connected by using closed frame and ventilation frame to form storage box, ventilation frame side and top are formed by metal net, it is convenient to ventilate and radiate heat, reaches directly through ball conveying guide rail to convey storage after glass ball processing, and cooling can be carried out simultaneously by heat dissipation and ventilation to glass ball.

The utility model relates to the technical field of sprinklers, specifically a sprinkler for fire fighting, including a connecting pipe, the external thread of the connecting pipe is connected to a nut, the bottom of the nut is connected to a bracket, the other end of the bracket is connected to a threaded barrel, the bottom of the threaded barrel is connected to a water distribution plate; a thermosensitive glass ball, the bottom of the thermosensitive glass ball is connected to a threaded column, and the threaded column is threadedly connected to the inside of the threaded barrel; a support frame, the support frame is connected to the inner wall of the connecting pipe, and the inside of the support frame is penetrated by a guide rod, and the bottom of the guide rod is connected to a plug. The utility model can make the device more convenient in subsequent cyclic use through the setting of a split structure, and facilitates the installation of the plug and the thermosensitive glass ball. At the same time, the plug adopts a sliding support connection, which effectively avoids the risk of its falling and loss, and further improves the convenience of using the device.

The invention belongs to the technical field of chemistry and chemical engineering experiments, and particularly relates to a double-effect condenser. The double-effect condenser comprises an outer heat exchange pipe, an upper connector, a lower connector, a cooling liquid inlet, a cooling liquid outlet and an inner heat exchange pipe which are integrally designed. The outer heat exchange tube is a double-layer coaxial straight sleeve; the upper connecting port and the lower connecting port are respectively welded on a conical ground glass tube, a glass ball grinding port, a glass bowl grinding port or a glass flange connecting port at the top and the bottom of the first-layer tube; the cooling liquid inlet and the cooling liquid outlet are straight connecting pipes or pagoda-shaped connecting pipes which are respectively welded on the outer wall of the first-layer pipe; the inner heat exchange tube is a double-layer coaxial straight sleeve or a single-layer tube which is coaxial with the outer heat exchange tube. The double-effect condenser has the advantages of being high in heat exchange efficiency and small in environmental influence, and has important significance on improving the environment of a chemistry and chemical engineering laboratory and promoting rapid development of healthy chemistry.

The invention discloses a photoelectrocatalytic reactor with adjustable light. A top plate cover is fixed on the upper opening of the reactor. A plurality of luminous spherical lamps are built in the reactor. A feed inlet pipe is provided on one side wall of the reactor. A first control valve is installed on the feed inlet pipe. A sampling inlet pipe is provided on the other side wall of the reactor. A second control valve is installed on the sampling inlet pipe. An iron screening plate is installed on the inner wall of the reactor. Screen holes are evenly distributed on the iron screening plate. A solenoid is fixed on the outside of the bottom of the reactor. The solenoid is fixed on a bracket. The bracket is placed on a magnetic stirrer. A gas storage tank is passed into the reactor through an air pipe. The electrodes include a cathode and an anode. The cathode is connected to the negative pole of a power supply. The anode is connected to the positive pole of the power supply. The power supply is connected to the solenoid. The power supply is provided with buttons for controlling the on and off of the power supply of the electrode and the solenoid respectively. The structure is simple. Photoelectrocatalysis is realized to improve the catalytic efficiency through the synergy of power supply and photocatalysis. The light source of the whole device is provided by a quartz glass ball. The social and economic benefits are remarkable.

1. The name of the product of this design: desk lamp (glass sphere). 2. Purpose of this design product: used as a desk lamp. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the key points of the design: main view.

The invention discloses a 1535nm beam expanding lens for a miniaturized laser range finder, which comprises an incident element A1 and an emergent element A2, and the focal points of the incident element A1 and the emergent element A2 coincide; the incident element A1 is a glass ball with the diameter of 0.5-1.5 mm, the emergent element A2 is a plano-convex lens, and the convex surface of the plano-convex lens faces the emergent direction of light. According to the Kepler type beam expanding lens, the small glass ball with the diameter being equal to that of the Kepler type beam expanding lens is adopted as an incident element of the Kepler type beam expanding lens, the plano-convex lens with the convex face facing the light emitting direction is adopted as an emitting element, and therefore when the focal length of the beam expanding lens at the emitting element is small, the beam expanding lens can still have the large amplification factor on laser of 1535 nm; the miniaturized requirement of the range finder is met, high magnification and small size are achieved, meanwhile, the cost is low, and the range finder is easy to install and adjust.

The invention discloses a method for repairing a glass lighting brick platform. The method comprises the following steps of: erecting a formwork at an original dismantling position of an original structural plate to form a pouring formwork; a positioning plate is laid on the pouring formwork, and holes are formed in the positioning plate according to the sizes of the glass bricks and the arrangement scheme so as to form positioning holes; a lighting glass ball is placed in a steel sleeve, an expansion space is reserved between the lighting glass ball and the inner wall face of the steel sleeve, and the expansion space is filled with elastic sealing filler to form the glass brick; the glass bricks are arranged in the positioning holes; arranging binding steel bars on a positioning plate, and connecting and fixing the binding steel bars and the glass bricks; and concrete pouring is conducted on the pouring formwork to form a new structural slab. According to the glass daylighting brick platform repairing method, the daylighting glass ball, the steel sleeve and the elastic sealing filler of the repaired glass daylighting brick are matched with one another, stress acting on the daylighting glass ball can be buffered when the problem of thermal expansion and cold contraction occurs, the problems of cracking, damage and the like of the daylighting glass ball are avoided, and the service life of the glass daylighting brick platform is prolonged. Therefore, the leakage problem is well avoided, and the repairing method is simple and convenient to operate.

The present invention belongs to the technical field of bird-repelling devices, and specifically discloses a power distribution line bird-repelling device, comprising a hoop, a mounting block is sleeved at equal intervals on the hoop, a second arc-shaped reflector is fixedly connected to the outer wall of the mounting block, a bending frame is rotatably connected to one side of the mounting block through a connecting hinge, a first arc-shaped reflector is fixedly connected to the bending frame, a metal rod is fixedly connected to the second arc-shaped reflector and the first arc-shaped reflector, and a connecting spring is fixedly connected between the bending frame and the mounting block. The glass ball in the device can collect external light and transmit it to the inside of a hemispherical shell. At this time, the hemispherical glass inside the hemispherical shell can transmit the light to the focusing layer, and then the focusing layer can pass the light through the light-transmitting hole to irradiate the first arc-shaped reflector, the second arc-shaped reflector, the first reflective lens and the mounting block, and the light reflected by the first arc-shaped reflector, the second arc-shaped reflector, the first reflective lens and the mounting block can interfere with birds.