32results about How to "With indication function" patented technology

The invention discloses a wall-mounted new energy vehicle charging device. The device comprises a charging box and a hanging frame, a first sliding cavity is formed in the charging box, a guide sliding groove is formed in the inner bottom wall of the first sliding cavity, a first screw extending left and right is arranged in the first sliding cavity, and the left end of the first screw is connected with a first motor; the first screw is matched and connected with a first sliding block through threads, and a first sliding groove is formed in the first sliding block; a guide sliding rod which extends left and right is arranged in the first sliding groove, and a second sliding block is matched and connected with the guide sliding rod in a sliding mode; the bottom of the second sliding block extends into the guide sliding groove and is matched and connected with the guide sliding groove in a sliding mode; a second sliding cavity is formed in the second sliding block, a third sliding block is arranged in the second sliding cavity, and a first spring is arranged at the bottom of the third sliding block; a pushing sliding block penetrating through the bottom end surface of the second sliding block is arranged at the bottom of the third sliding block, a connecting part is arranged at the bottom of the pushing sliding block, and a rolling wheel is arranged at the bottom of the connecting part. The device is simple in structure and convenient to operate, power supply inserting connection can be automatically carried out, installation and dismounting are convenient, and the safety is high.

The invention discloses a method for preparing a coating on a cutting blade, and relates to a cutting blade. The method comprises the following steps: (1) selecting a cutting blade substrate; (2) coating a TiN layer on the cutting blade substrate; (3) coating a TiCxNy layer, wherein x is more than or equal to 0, y is more than or equal to 0, and (x+y)=1; (4) depositing an M1M2CxNyOz transition layer, wherein x is more than or equal 0, y is more than or equal to 0, z is more than or equal to 0, (x+y+z)=1, M1 is one of titanium, aluminum, zirconium, hafnium, boron, silicon and the like, and M2 is one of titanium, aluminum, zirconium, hafnium, boron, silicon and the like; (5) depositing an alpha-Al2O3 layer; (6) depositing a ZrN layer; (7) depositing a TiN layer on the top; (8) removing a covering layer outside the front blade surface of the blade. The prepared coating is a coating having decorating and indicating functions for the cutting blade, and can be produced relatively easily at lower cost by adopting a CVD (Chemical Vapor Deposition) method.

The invention provides adhesive with indicating function. The adhesive with the indicating function is prepared by heating water to between 40 and 60 DEG C, adding polyvinyl alcohol into the water, heating the mixture till boiling to dissolve the polyvinyl alcohol, cooling the mixture to room temperature, adding sodium carboxymethylcellulose into the mixture, dissolving the sodium carboxymethylcellulose with stirring, continuously heating the mixture to between 40 and 50 DEG C, adding swelling gelatin into the mixture, stirring the mixture uniformly, adding glutaraldehyde into the mixture, stirring the mixture for 10 to 20 minutes, cooling the mixture to room temperature, then adding ethanol solution of triarylmethane leuco dye into the mixture, and adding sodium hydroxide solution into the mixture. The method has the advantages of simple and feasible preparation process, low cost and easy production; and the adhesive has the most prominent characteristics that the color of the adhesive can indicate the adhered part so as to reduce the waste of repeated coating, the color of the adhered part can fade in short time, and no trace is left.

The invention discloses convenient building construction equipment, which comprises a power transmission cabinet and a hanging bracket, and is characterized in that the power transmission cabinet is internally provided with a first sliding connection cavity, the inner bottom end of the first sliding connection cavity is provided with a movement-guiding sliding connection groove, the first sliding connection cavity is internally provided with a first screw connection rod which is arranged in a transversely expanding manner, the left end of the first screw connection rod is connected with a first motor, the first screw connection rod is matched with a first sliding connection block in a screw connection manner, the first sliding connection block is internally provided with a first sliding connection groove, the first sliding connection groove is internally provided with a movement-guiding sliding connection rod which is arranged in a transversely expanding manner, the movement-guiding sliding connection rod is connected with a second sliding connection block in a matched sliding connection manner, the bottom of the second sliding connection block penetrates into the movement-guiding sliding connection groove and is connected with the movement-guiding sliding connection groove in a matched sliding connection manner, the second sliding connection block is internally provided with a second sliding connection cavity, the second sliding connection cavity is internally provided with a third sliding connection block, the bottom of the third sliding connection block is provided with a first compression spring, the bottom of the third sliding connection block is provided with a pushing sliding connection block which longitudinally penetrates through the bottom end face of the second sliding connection block, the bottom of the pushing sliding connection block is provided with an engagement segment, and the bottom of the engagement segment is provided with a transfer wheel. The building construction equipment is simple in structure, convenient to operate, capable of automatically operating, providing power and plugging, convenient to install and remove and high in safety.

The invention discloses a portable dust remover, and the dust remover comprises a power-on platform and a hanging rack. The interior of the power-on platform is provided with a first sliding cavity, and the internal bottom of the first sliding cavity is provided with a guide chute. The interior of the first sliding cavity is provided with a first stud which is extended laterally. The left side end of the first stud is in power connection with a first power unit, and the first stud is in screw-thread fit connection with a first sliding block. The interior of the first sliding block is provided with a first chute. The interior of the first chute is provided with a guide sliding rod which extends laterally. The guide sliding rod is in smooth fit connection with a second sliding block, and the bottom of the second sliding blocks is pushed into the guide chute and achieves the smooth fit connection. The interior of the second sliding block is provided with a second sliding cavity, and the interior of the second sliding cavity is provided with a third sliding block. The bottom of the third sliding block is provided with a first elastic piece, and is also provided with a press sliding block which passes through the bottom end face of the second sliding block. The bottom of the press sliding block is provided with a connection segment, and the bottom of the connection segment is provided with a rotating wheel. The dust remover is simple in structure, is convenient to operate, can achieve the operation and power supply plugging, is convenient for installation and disassembly, and is high in safety.

The invention discloses a multifunctional colorful suitcase which comprises a suitcase body. The suitcase body is provided with an LED lamp band, a power supply system, a main controller and a sensor system. The power supply system comprises a solar cell panel, a power manager and a storage battery, the solar cell panel charges the storage battery through the power manager, the storage battery supplies power for the main controller and the LED lamp band through the power manager, the output end of the sensor system is connected to the input end of the main controller, and the main controller controls the working condition of the LED lamp band through the power manager according to received information detected by the sensor system. The multifunctional colorful suitcase increases a suitcase colorful effect, has an indication function, an anti-theft function, and an overweight alarming function, is simple in structure, and small in influence on the weight of a suitcase, increases multiple functions, and brings great convenience for traveling of people.

The invention discloses a bridge maintenance device, which comprises an electric connection frame body and a hanging frame. An operation groove is arranged in the left end surface of the electric connection frame body, and an external connection electric hole is arranged in the operation groove. A switch door is provided on the left end of the slot, and the left end of the switch door is hinged through a hinge, and a handle is provided at the external position of the switch door, and a fishing hook is correspondingly arranged on the right side of the connecting frame, and a first slide is arranged in the connecting frame. Shift chamber, the bottom end of the first slide chamber is provided with a guide slide groove, the first slide chamber is provided with a first screw-shaped rod extending left and right, and the left end of the first screw-shaped rod is connected with the first driving machine , the first helical rod is screw-fitted with the first sliding block, the first sliding block is provided with a first sliding groove, and the first sliding groove is provided with a guide sliding rod extending left and right, guiding The sliding bar is slidably connected with the second sliding block; the invention has simple structure, convenient operation, automatic operation, power supply insertion, convenient installation and disassembly, and high safety.

The invention discloses an ophthalmic collagen cross-linking integrated device which comprises a working device, a control device, a perfusion device, a light source device and a power supply device,wherein the power supply device is electrically connected with the working device, the infusion device, the control device and the light source device respectively, the perfusion device is connected to the working device through a conduit, the light source device and the working device are connected by light, the control device is connected with the working device, the perfusion device and the light source device by a wireless or wired manner, the devices can be fixedly connected or actively connected, and the working device is used for alignment of treatment parts, the control device is usedfor displaying and controlling the working state, the perfusion device is used for controlling the perfusion rate of a riboflavin solution, and the light source device is used for generating therapeutic light. The device is small in size, quick and convenient to carry, simple and flexible to operate, integrates ultraviolet light irradiation and riboflavin perfusion in one, not only improves the accuracy of the treatment process, but also liberates the hands of an operator, makes a treatment system more efficient and flexible.

The invention relates to a light-emitting diode (LED) sensing and controlling system which comprises an LED module, a microcontroller and controlled equipment, wherein both the LED module and the controlled equipment are controlled by the microcontroller to work; the LED module is used as a light indicator for indicating the state of the controlled equipment; the LED module is also used as a touchsensor; and after the microcontroller detects that the LED module is touched, the relative control logic judgment is executed, thereby the controlled equipment is controlled. The LED sensing and controlling system carries out logic processing by utilizing the characteristics of an LED through a series of processing so as to realize simple logic control, enables the LED to have both a control function and an indicating function and has the advantages of low price, cost saving, high user satisfaction degree, fashion and attractive appearance.

The invention presents an optical communication module with interconnection and fault indication functions. The optical communication module comprises an optical cable. The two ends of the optical cable are adaptively connected with photoelectric interface assemblies correspondingly. The photoelectric interface assemblies comprise shells, circuit board assemblies and signal lamp assemblies, wherein the circuit board assemblies and the signal lamp assemblies are arranged in the shells. The circuit board assemblies are in butt connection with the tail end of the optical cable for completing photovoltaic conversion and communication of optical signals in the optical cable. The signal lamp assemblies and the circuit board assemblies are welded and fixed. The signal lamp assemblies are used fordetecting the photoelectric communication condition of the circuit board assemblies. When the photoelectric communication condition is abnormal, the signal lamp assemblies can trigger an alarm lamp to be turned on, and field personnel are reminded to conduct fault diagnosis. The signal lamp assemblies are further provided with trigger switches, signal lamps at the two ends of the same optical cable are turned on and turned off simultaneously, and module interconnection indication is realized.

The invention discloses an emergency and parking braking device of a loader. The emergency and parking braking device of the loader comprises a compressed air tank, an emergency and parking braking control valve and a brake, and is characterized in that the compressed air tank is provided with a pressure gage and is connected with one end of the emergency and parking braking control valve; the emergency and parking braking control valve is provided with a button switch for controlling the emergency and parking braking control valve to be connected or disconnected; the other end of the emergency and parking braking control valve is connected with a quick release valve; the quick release valve is connected with a variable speed control cut-off valve and a brake chamber respectively; the bottom of the brake chamber is provided with a vertical ejector rod; the tail end of the ejector rod is horizontally provided with a pull rod; the tail end of the pull rod is connected with the brake. Users can conveniently and rapidly start the emergency and parking braking device, and the emergency and parking braking device of the loader has the indication function and is simple in structure and high in efficiency.

The invention discloses a railway and civil signal lamp supplied with power generated by manpower. The railway and civil signal lamp comprises a housing with a lifting handle, wherein the housing is internally provided with a stand; a drive shaft, a spiral spring, a revolving drum, a multi-stage increasing system and a power generator are arranged on the stand; one end of the drive shaft extends outside the housing and is connected with a rocking handle; a ratchet wheel device and a locking rod are arranged on the stand; one group of signal light sources is arranged on one end face of the housing, an illuminating light source is arranged on the other end face of the housing, which is opposite to the signal light sources, a signal control switch and an illuminating control switch are arranged on the lifting handle; and the other end of the drive shaft is provided with a one-way transmission flywheel mechanism, a sleeving wheel is arranged outside a flywheel of the one-way transmission flywheel mechanism, a rotating arm is arranged on the sleeving wheel, a transmission connecting rod is connected above the end part of the rotating arm and extends outside the housing and is hinged with a holding handle, the other end of the holding handle is hinged with the lifting handle of the housing, and a tension spring is arranged below the end part of the rotating arm and is connected withthe bottom of the housing. The railway and civil signal lamp is suitable for railways and civil use, and is environment-friendly and energy-saving.

The invention belongs to the technical field of hydrogen sulfide treatment, and particularly discloses an efficient desulfurizing agent with an indication function and a preparation method thereof. The desulfurizing agent comprises the following components, by weight: 10-60 parts of an alkaline compound, 20-50 parts of basic cupric carbonate, 10-30 parts of nano powder and 0-25 parts of a surfacemodifier; the alkaline compound does not comprise basic cupric carbonate. And / or the desulfurizing agent comprises the following components, by weight: 30-110 parts of basic cupric carbonate, 10-30 parts of nano powder, 0-25 parts of surface modifier, 5-10 parts of activated carbon, 5-10 parts of a diatomite, 2-8 parts of a hydrophobic agent and 2-10 parts of a dispersing agent. According to the efficient desulfurizing agent with an indication function, desulfurizing agent powder with a large specific surface area is prepared by adopting a nanotechnology, so that the desulfurizing agent powderreacts with hydrogen sulfide more thoroughly, the absorption efficiency is higher; the final dosage of the desulfurizing agent can be controlled by adding an indicator, the dosage is controllable, and a problem that whether hydrogen sulfide is thoroughly removed cannot be judged is solved.

The invention discloses a digital electro-hydraulic servo pump-controlled ultra-precision hybrid bearing and ultramicro feeding mechanism, which comprises a first oil supply system for supplying oil to a main shaft structure and a second oil supply system for supplying the oil to front centering static pressure bearings in the main shaft structure, wherein the main shaft structure is provided with a main shaft, front centering hybrid bearing sleeves sleeved to the front end of the main shaft, rear centering hybrid bearing sleeves sleeved to the rear end of the main shaft, and a static pressure thrust bearing and a flange which are arranged at given positions of the front end of the main shaft; the inner circumference of each of the front centering hybrid bearing sleeves and the rear centering hybrid bearing sleeves is uniformly provided with four pressure bearing grooves and four return chutes; the four pressure bearing grooves of the rear centering hybrid bearing sleeve are supplied with the oil by the first oil supply system; two vertical pressure bearing grooves of the front centering hybrid bearing sleeve are supplied with the oil by the first oil supply system, and two horizontal pressure bearing grooves of the front centering hybrid bearing sleeve are supplied with the oil by the first and second oil supply systems respectively; the four return chutes of each of the front centering hybrid bearing sleeves and the rear centering hybrid bearing sleeves are communicated with an oil tank; and the static pressure thrust bearing is supplied with the oil by the first oil supply system.

The invention discloses a deduster device with an automatic control function. The deduster device comprises an electrification platform and a hanging support; a first slide chamber is disposed in theelectrification platform; a guide slide groove is formed in the inner bottom end in the first slide chamber; a first stud disposed to be capable of extending leftwards and rightwards is disposed in the first slide chamber; the left side end of the first stud is in power connection with a first power device; the first stud is connected with a first slide block in a screw thread fit manner; a firstslide groove is formed in the first slide block; a guide slide rod disposed to be capable of extending leftwards and rightwards is disposed in the first slide groove; the guide slide rod is connectedwith a second slide block in a smooth fit manner; the bottom of the second slide block is jacked into the guide slide groove and is in a smooth fit connection with the guide slide groove; a second slide chamber is disposed in the second slide block; a third slide block is disposed in the second slide chamber; the bottom of the third slide block is provided with a first elastic sheet; the bottom ofthe third slide block is provided with a pressing slide block penetrating the bottom end surface of the second slide block; the bottom of the pressing slide block is provided with a connecting section; and the bottom of the connection section is provided with a rotating wheel. The deduster device has the advantages of simple structure, convenient operation, automatic work, high safety, automaticpower supply plug-in and convenient installation and detachment.

The invention relates to a roadblock, in particular to a multifunctional roadblock for a road. The multifunctional roadblock for the road has an indicating function. In order to solve the technical problem, the multifunctional roadblock for the road comprises wheels, a first strut, a mounting plate, a first fixing mechanism, a first mounting frame, a second mounting frame, a locking mechanism, a protecting mechanism, a rotating mechanism, a mounting rack, a top plate and a second fixing mechanism; the wheels are fixedly connected to the bottom of the mounting plate through the first strut; thefirst fixing mechanism is fixedly connected to the bottom of the mounting plate; the first mounting frame is fixedly connected to the top of the mounting plate; and the bottom of the second mountingframe is hinged to the top of the first mounting frame. The indicating function is fulfilled.

The invention provides a courtyard lamp with an indication function. The courtyard lamp comprises a bottom plate, a pillar, a top seat and an illumination component. One end of the pillar is connectedto the bottom plate, the other end of the pillar is connected to the top seat, and the illumination component is arranged on the top seat. The courtyard lamp further comprises an indication component. The indication component comprises retention rings and an indicator plate. One or more ring grooves are formed in the pillar. Each retainer ring comprises a left half ring and a right half ring. Theleft half rings and the right half rings are each in an arc shape, each left half ring and the corresponding right half ring together form the ring, and the retention rings are arranged at the corresponding ring grooves. The courtyard lamp with the indication function can realize the indication function while lighting, the occupied area of an existing courtyard lamp is not increased, and the clearer indication of the indicator plate is realized when the lighting is insufficient through the matching of the illumination component and the indicator plate and the lighting aid of the illuminationcomponent.

The present invention discloses an improved building construction device. The device comprises a power transmission cabinet and a hanging rack; a first sliding contact cavity is defined in the power transmission cabinet; a movement-guide sliding contact groove is formed at the inner bottom end of the first sliding contact cavity; a first screw connection rod which is unfolded rightwards and leftward is arranged in the first sliding contact cavity; the left side end of the first screw connection rod is connected with a first motor; the first screw connection rod is in screwed connection fit with a first sliding contact block; a first sliding contact groove is formed in the first sliding contact block; a movement-guide sliding contact rod which is unfolded rightwards and leftwards is arranged in the first sliding contact groove; the movement-guide sliding contact rod is in sliding contact fit connection with a second sliding contact block; the bottom of the second sliding contact block extends into the movement-guide sliding contact groove and is in sliding contact fit connection with the movement-guide sliding contact groove; a second sliding contact cavity is defined in the second sliding contact block; a third sliding contact block is arranged in the second sliding contact cavity; the bottom of the third sliding contact block is provided with a first compressed spring; the bottom of the third sliding contact block is provided with a pushing sliding contact block which longitudinally passes through the bottom end surface of the second sliding contact block; the bottom of the pushing sliding contact block is provided with a connection section; and the bottom of the connection section is provided with a change-over wheel. The improved building construction device has the advantages of simple structure, convenient operation, automatic work, automatic power supply, automatic plugging, convenient installation and disassembly and high safety.

The invention discloses electric water heater equipment. The electric water heater equipment comprises a power inlet base and a hanging body; a first movable bin is arranged in the power inlet base; a guide connection movable groove is formed in the inner bottom end of the first movable bin; a first screw rod arranged in a left-right extension mode is arranged in the first movable bin; the left end of the first screw rod is connected to a first electric rotating machine; a first movable block is connected to the first screw rod in a screwed matched mode; a first movable groove is formed in the first movable block; a guide connection movable rod arranged in a left-right extension mode is arranged in the first movable groove; a second movable block is movably connected to the guide connection movable rod in a matched mode; the bottom of the second movable block is jacked into the guide connection movable groove and is movably connected to the guide connection movable groove in a matched mode; a second movable bin is arranged in the second movable block; a third movable block is arranged in the second movable bin; a first elastic strip is arranged at the bottom of the third movable block; an extruding and pushing movable block which is connected to the bottom end surface of the second movable block is arranged at the bottom of the third movable block; a connecting part is arranged at the bottom of the extruding and pushing movable block; and a steering wheel is arranged at the bottom of the connecting part. The electric water heater equipment is simple in structure, convenient to operate, capable of automatically realizing inserting connection for working power supply, convenient to install and disassemble and high in safety.

The invention relates to a light-emitting diode (LED) sensing and controlling system which comprises an LED module, a microcontroller and controlled equipment, wherein both the LED module and the controlled equipment are controlled by the microcontroller to work; the LED module is used as a light indicator for indicating the state of the controlled equipment; the LED module is also used as a touchsensor; and after the microcontroller detects that the LED module is touched, the relative control logic judgment is executed, thereby the controlled equipment is controlled. The LED sensing and controlling system carries out logic processing by utilizing the characteristics of an LED through a series of processing so as to realize simple logic control, enables the LED to have both a control function and an indicating function and has the advantages of low price, cost saving, high user satisfaction degree, fashion and attractive appearance.

The invention relates to a sphygmomanometer with multi-colored backlight instruction WHO blood pressure classifications. The sphygmomanometer is characterized in that an upper assembly, a middle assembly and a lower assembly are included; the upper assembly comprises a panel, buttons and an upper cover, the middle assembly comprises liquid crystal, a multi-colored backlight source, a display fixing frame and a control circuit board, and the lower assembly comprises a lower shell module. According to the sphygmomanometer with the multi-colored backlight instruction WHO blood pressure classifications, the structural design is ingenious, the problem that an existing electronic sphygmomanometer with WHO classifications is not intuitive in instruction information is solved, and it is guaranteed that a user can intuitively and clearly know the health degree of the blood pressure.

The invention discloses wall-mounted new energy vehicle charging equipment. The wall-mounted new energy vehicle charging equipment comprises a charging box and a hanger body; a first sliding cavity isformed in the charging box, a sliding guiding groove is formed in the inner bottom wall of the first sliding cavity, and a first screw rod extending in the left-right direction is arranged in the first sliding cavity; the left side end of the first screw rod is connected with a first motor, the first screw rod is connected with a first sliding block in a threaded fit mode, a first sliding grooveis formed in the first sliding block, and a sliding guiding rod extending in the left-right direction is arranged in the first sliding groove; the sliding guiding rod is connected with a second sliding block in a sliding fit mode, the bottom of the second sliding block extends into the sliding guiding groove and is connected with the sliding guiding groove in a sliding fit mode, a second sliding cavity is formed in the second sliding block, a third sliding block is arranged in the second sliding cavity, and a first spring is arranged at the bottom of the third sliding block; and the bottom ofthe third sliding block is provided with a pushing-pressing sliding block penetrating through the bottom end face of the second sliding block, a connecting part is arranged at the bottom of the pushing-pressing sliding block, and an idler wheel is arranged at the bottom of the connecting part. The wall-mounted new energy vehicle charging equipment is simple in structure and convenient to operate,automatic work for electricity supplying and inserted connection can be achieved, mounting and dismounting are convenient, and safety is high.

The invention discloses a railway and civil signal lamp supplied with power generated by manpower. The railway and civil signal lamp comprises a housing with a lifting handle, wherein the housing is internally provided with a stand; a drive shaft, a spiral spring, a revolving drum, a multi-stage increasing system and a power generator are arranged on the stand; one end of the drive shaft extends outside the housing and is connected with a rocking handle; a ratchet wheel device and a locking rod are arranged on the stand; one group of signal light sources is arranged on one end face of the housing, an illuminating light source is arranged on the other end face of the housing, which is opposite to the signal light sources, a signal control switch and an illuminating control switch are arranged on the lifting handle; and the other end of the drive shaft is provided with a one-way transmission flywheel mechanism, a sleeving wheel is arranged outside a flywheel of the one-way transmission flywheel mechanism, a rotating arm is arranged on the sleeving wheel, a transmission connecting rod is connected above the end part of the rotating arm and extends outside the housing and is hinged with a holding handle, the other end of the holding handle is hinged with the lifting handle of the housing, and a tension spring is arranged below the end part of the rotating arm and is connected withthe bottom of the housing. The railway and civil signal lamp is suitable for railways and civil use, and is environment-friendly and energy-saving.

The invention discloses a wear checking device for a brake pad of an oil-cooling multi-piece brake. The device comprises a checking rod, a fixing base, a sleeve, a spring and a protective cap; the checking rod is arranged in a checking rod through hole of the fixing base in a sleeve mode, the sleeve is connected to the fixing base, the sleeve sleeves the checking rod and the checking rod is located in the sleeve, and the protective cap is connected to the sleeve; and an outer end surface of the checking rod extends out of an opening of the sleeve and is located in a counter bore of the protective cap. The device is simple and compact in structure and does not need to be repeatedly disassembled and assembled after being installed, has an automatic reset and indication function, so that thechecking process is simple and visual.

The invention discloses bridge maintenance equipment capable of working automatically. The equipment comprises an electricity connection frame and a hanging and raising rack; an operation groove is formed in the left end surface of the electricity connection frame; an outer connection electric hole is formed in the operation groove; the electricity connection frame is provided with an opening andclosing door located at the left end surface of the operation groove; the left end surface of the opening and closing door is hinged through a hinge; the outside of the opening and closing door is provided with a handle; the right end surface of the electricity connection frame is provided with hooks which are correspond to each other in a vertical direction; a first sliding cavity is formed in the electricity connection frame; a guide sliding groove is formed in the inner bottom end of the first sliding cavity; a first spiral rod configured to extend leftwards and rightwards, is arranged in the first sliding cavity; the left end of the first spiral rod is connected with a first driving machine; the first spiral rod is connected with a first sliding block in a threaded fit manner; a firstsliding groove is formed in the first sliding block; a guide sliding rod, configured to extend leftwards and rightwards, is arranged in the first sliding groove; and the guide sliding rod is connectedwith a second sliding block in a slide fit manner. The bridge maintenance equipment of the invention has the advantages of simple structure and convenient operation. The bridge maintenance equipmentcan automatically work to supply power and realize plug-in connection. Meanwhile, the bridge maintenance equipment is convenient to install, assemble and disassemble, and is high in safety.

The invention discloses a welding device comprising a power connection frame and a hanging frame. A first sliding cavity is formed in the power connection frame; a guide sliding groove is formed in the bottom end of the first sliding cavity; a first spiral rod is arranged in the first sliding cavity in a left and right extending mode; the left side end of the first spiral rod is connected with a first electromotor; a first sliding block is connected on the first spiral rod in a spirally-matched mode; a first sliding groove is formed in the first sliding block; a guide sliding rod is arranged in the first sliding groove in a left and right extending mode and connected with a second sliding block in a slidably-matched mode; the bottom of the second sliding block stretches into the guide sliding groove and is connected with the guide sliding groove in a slidably-matched mode; a second sliding cavity is formed in the second sliding block; a third sliding block is arranged in the second sliding cavity; a first elastic force piece is arranged at the bottom of the third sliding block; a pushing sliding block penetrating through the end face of the bottom of the second sliding block is arranged at the bottom of the third sliding block; a connecting part is arranged at the bottom of the pushing sliding block; and a rotating wheel is arranged at the bottom of the connecting part. The structure is simple, operation is convenient, automatic working, power supply and inserting connection can be achieved, mounting and detaching are convenient, and safety is high.