63results about How to "Avoiding the Risks of Working at Heights" patented technology

The invention discloses a full-automatic tunnel mist spraying trolley for second-lining concrete curing. Upper arched frames and side arched frames are arranged on the periphery of a main frame, the two sides of the lower portions of the two upper arched frames are each connected with the corresponding side arched frame. A trolley travelling mechanism is arranged at the lower end of the main frameand mainly comprises a track, travelling wheels, a stroke switch, a motor and a driving mechanism. The front radial end face and the rear radial end face of the trolley are each provided with a spokeplate telescopic mechanism, and the spoke plate telescopic mechanisms mainly comprise upper spoke plates, lower spoke plates, upper-lower spoke plate fixing frames, electric push rods, force sensors,guide wheels and self-lubricating plates. Curing automatic mist spraying mechanisms are arranged on the arched frames and mainly comprise water storage tanks, electric heating steam generators, nozzles, temperature sensors, humidity sensors and pipelines. A condensate accumulation and recovery mechanism is arranged on the lower portion of the main frame and mainly comprises a liquid accumulationtray, a liquid accumulation box, a water pump and a filter. The concrete surface is not damaged, the field operating environment is also not affected, and the temperature and humidity of second-liningconcrete during curing can be guaranteed.

The invention discloses an all-in-one full-automatic wall surface plastering unit and a use method thereof. The all-in-one full-automatic wall surface plastering unit comprises a transportation vehicle, four identical bracket structures arranged on the transportation vehicle in sequence, a plastering mechanism arranged above the bracket structure, and a control system, wherein a power supply for supplying power to the whole plastering unit is arranged in the transportation vehicle; the plastering mechanism comprises a spraying system, a roller device, a scraper device and grinding units which are connected with the power supply and are arranged above the four bracket structures in sequence; the control system comprises a controller arranged in the transportation vehicle and a motor set connected in series with the power supply and the controller; and the controller is further electrically connected with the roller device, the scraper device, small-size grinding machines and a dust collector. The plastering unit can replace a worker to realize at least 95 percent of the working amount in the construction project; the height and the width of construction can be controlled by the controller; and the all-in-one full-automatic wall surface plastering unit is high in construction speed, high in efficiency and suitable for popularization and application and can effectively avoid the risk caused by high-place work of personnel.

The invention provides a full-automatic tunnel concrete lining maintenance device comprising a maintenance rack, a controller, a water spraying device and a power distribution box. The water spraying device is composed of a pressurizing pump, two rows of arc water spraying pipes and atomizing nozzles. The lower portion of the maintenance rack is provided with a walking device and the controller. The upper portion of the maintenance rack is provided with the two rows of parallel arc water spraying pipes. The full-automatic tunnel concrete lining maintenance device is easy to operate, achieves automatic maintenance, can automatically walk and spray water and effectively reduces cracks on the surface of lining concrete, the walking speed of the full-autonomous tunnel concrete lining maintenance device can be automatically controlled through a remote controller, the strength and the durability of a concrete lining are guaranteed, and indirect economic benefits are generated; the full-automatic tunnel concrete lining maintenance device is suitable for maintenance of all kinds of tunnel lining concrete, improves construction efficiency, lowers the maintenance process cost, improves the appearance quality of concrete, purifies air in a tunnel, and shortens ventilation time. Remarkable economic benefits are created for construction. The full-automatic tunnel concrete lining maintenance device further has the advantages of being simple and compact in structure, low in manufacturing cost and easy and convenient to use.

The invention discloses a laser standard scribing method for a low-speed diesel engine frame for a ship. An upper plane, a middle plane and a lower plane are arranged out of the frame; and multiple frontal guide boards symmetrically and uniformly distributed and side guide boards perpendicular to the frontal guide boards are longitudinally arranged in the frame. The method is characterized in that a laser ray is set as a measurement reference line; and an upper plane processing line, a middle plane processing line, a lower plane processing line and a longitudinal center line and a transverse center line, serving as processing positioning reference lines, of the frame are once scribed in the frontal positions of the frame to guarantee the uniformity of processing allowances of the upper plane, the middle plane, the lower plane, the frontal guide boards and the side guide boards. The method achieves the effects of automatic alignment of the reference lines, low labor intensity, high measurement precision, high working efficiency and low potential safety hazard, realizes once completion of allowance detection and scribing of such processing parts as the upper, middle and lower planes, the frontal guide boards and the side guide boards of the frame in the frontal positions of the frame, and is suitable for the scribing operation of large diesel engine frames and large parts.

The invention discloses a fall preventor, comprising a weightlessness identification device, an information processing system and a launch gun, wherein the weightlessness identification device is used for identifying whether the weightlessness identification device per se is in a weightless state; the launch gun is internally provided with a launch object which is launched during launching of the launch gun and is hooked on the ambient environment, the launch gun is connected with the launch object through a soft rope, and when the launch object is hooked on the ambient environment, the soft rope is used to form tension support for the launch gun; and the information processing system is connected with the weightlessness identification device and used for judging a fall state accordingly, and controls the launch gun to launch when the fall state is judged. The fall preventor disclosed by the invention has the advantages as follows: simple and reasonable structure, convenience in manufacture and installation, capability of preventing risks of overhead work and no influence on actions of an operator.

The invention relates to a high-altitude glass curtain wall cleaning unmanned aerial vehicle, and belongs to the technical field of unmanned aerial vehicles. According to the high-altitude glass curtain wall cleaning unmanned aerial vehicle, a cleaning device is fixedly connected to the front side of an unmanned aerial vehicle body, and the direction of a cleaning brush head is perpendicular to acentral plate II of the unmanned aerial vehicle body; a high-definition camera is fixedly connected to the front end of a central plate I, and the cleaning brush head is within the camera shooting range of the high-definition camera; a GPS positioning system is installed in the center of the central plate I; operation control systems are distributed on the central plate I and the central plate II;and a water spraying device is fixedly connected to the rear part of the central plate II. The high-altitude glass curtain wall cleaning unmanned aerial vehicle has high automation degree, high cleaning efficiency, capability of avoiding casualties caused by high-altitude operation, low labor cost, simple operation and convenient popularization.

The invention discloses a GIS partial discharge ultrasonic and ultrahigh-frequency detection sensor fixation device, which comprises a clamp slot for fixing a sensor and a multi-stage telescopic insulation rod. A baffle plate at one end of the clamp slot is provided with a through hole, and a threaded rod passes through the through hole and is connected with the clamp slot; a baffle plate at the other end of the clamp slot is provided with a threaded connector; the top end of the telescopic insulation rod is fixedly connected with a universal joint; the upper portion of the universal joint is connected with a bolt matched with the clamp slot threaded connector; and the clamp slot is connected with the telescopic insulation rod through the bolt arranged on the universal joint. The fixation device is simple in structure, convenient to operate, good in stability, high in reliability and convenient to fix and disassemble. Through the fixation device, workers can easily send the sensor to a specific test point without working at high place or passing through and climbing devices, so that labor intensity of the workers can be reduced effectively, work efficiency is improved, and personal safety can be ensured effectively.

The invention discloses a horizontal mold for integrated prefabrication of a pier column and a cover beam and a construction method thereof. The prefabrication mold comprises a pier column formwork structure, a cover beam formwork structure and a mold bottom frame, the mold bottom frame is T-shaped and comprises a transverse edge and a longitudinal edge; the cover beam formwork structure is arranged along the transverse edge of the mold bottom frame, the pier column formwork structure is arranged along the longitudinal edge of the mold bottom frame, the pier column formwork structure communicates with the cover beam formwork structure, the horizontal section of the cover beam formwork structure is rectangular or trapezoid, and a slurry passing opening is formed at the position, connected with the pier column formwork structure, of a side mold of the cover beam formwork structure; and the pier column formwork structure is cylindrical, and comprises a pier column bottom mold, a pier column top mold and a plugging plate, the cross section of the pier column bottom mold is in a semi-arc shape, the pier column top mold is connected to the top of the pier column bottom mold, and first pouring holes are formed in the tops of pier column top mold units. According to the mold and the construction method, the technical problems that for a traditional mode of casting the pier column and the cover beam in situ correspondingly, the construction period is long, the safety is poor, the construction quality is not easy to guarantee, and the environmental protection pressure is large are solved.

The invention provides a bridge pier, which comprises a capping beam and pier studs, wherein the capping beam comprises a steel truss fixedly connected with the pier studs, and concrete panels; the concrete panels are arranged on the top of the steel truss, are prefabricated in a multi-subblock mode and are spliced to form a whole; an FRP (fiber reinforce plastic) cloth felt combination structure covers the steel truss; prestress cables are arranged in the concrete panels prefabricated and formed by multiple subblocks; and the concrete panels are tensioned and connected into a whole by the prestress cables. According to the bridge pier capping beam with the structure, the FRP cloth felt combination structure covering the steel truss and the combination structure formed by the concrete panels prefabricated by multiple subblocks are used for replacing the original solid structure of the reinforced concrete so as to lower the self weight of the bridge pier capping beam, and therefore the bridge pier capping beam can bear a bridge body with a bigger load. In addition, according to the capping beam with the combination structure of the steel truss and the concrete panels, the use amount of cast-in-place concrete is reduced so as to simplify the construction process of the bridge pier, shorten the construction period and reduce the difficulty. The FRP structure is free from maintaining and has a higher durability. The invention also relates to a construction method for the bridge pier.

The invention discloses a stay cable damper combined with cable force testing. A damper support, a face interior lever, a connecting rod, a damping device and a cable force testing device are included. The damper support comprises a fixing base and a support. The connecting rod penetrates through the face interior lever. The damping device comprises a face interior damping device and a face exterior damping device. The cable force testing device is fixedly arranged at the bottom of the face interior lever and used for detecting and uploading stay cable vibration time interval data and a spectral analysis result. According to the stay cable damper combined with cable force testing, the face interior damping device and the face exterior damping device are separated, parameter optimization can be conducted on the face interior damping coefficient and the face exterior damping coefficient, and the effect of control over the face interior vibration and face exterior vibration at the same time is achieved; through the lever amplification function of the damper structure, vibration signals at the position of a cable clamp are transmitted to the position of the cable force testing device after being amplified, and the cable force testing precision is improved; and meanwhile, installation and later maintenance of the cable force testing device are conducted on the bridge floor, the aerial operation risks are avoided, and safety is improved.

The invention discloses an adjustable wind turbine generator cable protection device. The adjustable wind turbine generator cable protection device comprises a cable fastening clamp and an adjusting mechanism for driving the cable fastening clamp to move up and down; and the adjusting mechanism comprises at least three parallel vertical adjusting ropes and transverse beams correspondingly connected with the vertical adjusting ropes, the vertical adjusting ropes are arranged inside a wind turbine generator tower barrel in a vertically-adjusted manner, one end of each transverse beam is fixedly connected with the corresponding vertical adjusting rope, and the other end of each transverse beam is fixedly connected with the outer side of the cable fastening clamp. The cable fastening clamp comprises two detachably-connected fastening plates, and a closed zone used for fastening cables can be defined through the two fastening plates. According to the adjustable wind turbine generator cable protection device, through the vertical adjusting ropes capable of being adjusted vertically, the cable protection device can descend to a cable twisting platform when needed, high-air operation risks in the device maintaining process are avoided, and operation safety of operation and maintenance persons is improved. The cable fastening clamp is designed to be of a split type structure, and therefore the cable protection device is flexible and convenient to install.

The invention provides a tower crane remote real-time operation system. The tower crane remote real-time operation system comprises a remote control system, a tower crane cab monitoring system and a tower crane lifting variable-amplitude and variable-angle integrated frequency converter control system. The remote control system is used for receiving and converting operation actions of a handheld assembly, sending operation signals to the tower crane cab monitoring system and meanwhile receiving real-time collection data of the tower crane cab monitoring system. The tower crane cab monitoring system is used for collecting relevant data of the tower crane in real time and meanwhile sending the received operation signals and the collected data to the tower crane lifting variable-amplitude andvariable-angle integrated frequency converter control system. The tower crane lifting variable-amplitude and variable-angle integrated frequency converter control system is used for controlling corresponding assemblies of the tower crane to operate in real time according to the operation signals or the collected tower crane data. By means of the system, a driver can control the tower crane on theground or a floor, and accurate positioning and efficient transferring of construction raw materials are facilitated.

The invention discloses a fully-enclosed movable type spray maintenance platform. The fully-enclosed movable type spray maintenance platform comprises a door-shaped load-bearing frame, wherein a distribution box is arranged at the front side of the door-shaped load-bearing frame, and a water tank is arranged at the bottom of the distribution box. A PLC is arranged on the front side surface of thedistribution box, an arched supporting frame is arranged at the top of the door-shaped load-bearing frame, and closed rain cloth is arranged at the top of the arched supporting frame. An arched waterspray pipe is arranged on the outer surface of the closed rain cloth, an atomizing spray head is arranged on the outer side of the arched water spray pipe, closed air bags are arranged at the front and rear ends of the door-shaped load-bearing frame, and blast blowers are connected with one ends of the closed air bags. The fully-enclosed movable type spray maintenance platform fully considers tunnel construction working conditions and has the characteristics of high operability and wide application, moreover, the maintenance platform is simple and convenient to operate and high in speed, a remote controller is controlled manually, automatically pulling and walking are achieved, the spray maintenance of second lining can continuously last for a long time, the labor intensity is reduced, andgood working conditions are created for the maintenance of the second lining.

The invention relates to the mechanical field, and particularly to an XRW novel outdoor fuse. The outdoor fuse comprises two vertical insulators. The upper end of the insulator comprises a flat gasket. The flat gasket outwards extends, thereby forming a terminal. The XRW novel outdoor fuse further comprises a vertical spacing plate. The edge side of the spacing plate is provided with a contact. A sleeve can be placed between contacts between two insulators. The inner part of the sleeve can be penetrated by a fuse member. The fuse member is conductively connected with the contact and the terminal. The XRW novel outdoor fuse is advantageous in that (1), the two insulators are utilized for supporting, thereby realizing higher firmness and higher stability; (2), a pluggable structure is utilized, thereby realizing no requirement for bus detachment in changing, high convenience and effective saving of time and labor; (3), detachment can be realized by a specialized tool on ground without climbing to a high position by an operator, thereby preventing a risk in high-position operation; and (4), double-hole positioning is utilized for the upper hole and the lower hole of the insulator of the XRW novel outdoor fuse, thereby ensuring no deformation or distortion of the XRW novel outdoor fuse caused by a bus stress.

The invention discloses an anti-jamming method for a bucket elevator. A variable frequency motor is adopted to replace a traditional motor, the variable frequency power can be automatically adjusted according to the change of the feeding amount, optimal parameters are set after multiple times of adjustment, the purposes of energy conservation and speed regulation are achieved, and the energy consumption is greatly reduced; the motor is arranged outside a lower shell, so that maintenance personnel can conveniently carry out maintenance, the risk of high-altitude operation is avoided, and the maintenance difficulty is reduced; the groove wall of the lower shell is designed to be arc-shaped, a discharging mechanism is arranged, materials scattered by a hopper in the transportation process aredischarged out of the lower shell along with a flow guide groove, so that the motor damage caused by material jamming and overload is avoided, and the service life of the motor is prolonged; a vibration device can vibrate off the materials attached to the groove wall, so that the materials are prevented from blocking a discharging hole; and a worker can wash and air-dry an inner cavity of the bucket elevator, and the sewage after washing can be discharged through the discharging mechanism, so that the method is simple and convenient.

The invention provides a pipeline type fresh air ventilator with a variable diameter shell. The fresh air ventilator with the variable diameter shell is composed of a motor, an impeller, the variable diameter shell, a cylinder and air filter devices. The size of a wall installation hole can be reduced as much as possible through the design of the variable diameter shell, and huge damage to a wall is avoided. An air supply system of the fresh air ventilation can be arranged outdoors, and the purposes of lowering indoor noise and saving indoor space are achieved. According to the variable diameter shell, a spherical elastic framework with the two ends opened is defined by a plurality of metal sheets good in elasticity and used for supporting flexible materials, and the shell is manufactured; one opening end of the elastic framework is fixed, the other opposite opening end can slide, and the diameter of the shell is changed through adjustment on the sliding end position of the elastic framework. The motor and the impeller are arranged at the center of the variable diameter shell, and the air inlet end and the air outlet end of the cylinder are provided with the air filter devices different in filter precision correspondingly.

The invention provides a building construction method of an earth-covered oil tank, a hoisting device and a using method of the hoisting device. The construction method comprises the steps: a, a deeppit is dug in the ground of a proposed area, and a concrete platform is poured at the bottom of the deep pit; b, spliced and welded pieces of a steel storage tank are hoisted to the concrete platform,and a pouring formwork is set up; c, concrete is poured on the pouring formwork; d, the pouring formwork in the earth-covered oil tank is dismantled; e, a tank bottom of the steel storage tank and aside wall of the uppermost circle of the steel storage tank are spliced and welded on the concrete platform, and a tank top of the steel storage tank is spliced and welded on the side wall of the uppermost circle of the spliced and welded steel storage tank; f, the hoisting device is mounted at the tank top; g, the side wall of the uppermost circle of the steel storage tank provided with the tanktop is overall lifted, the other spliced and welded parts of the steel storage tank are hoisted to the corresponding position of the steel storage tank through the hoisting device to be spliced and welded; h, the step g is repeated till the side wall of the steel storage tank is spliced and welded; and i, finally a temporary entrance-exit is blocked by concrete.

The invention relates to the technical field of mounting of electric power equipment and particularly relates to a safety-health-environment mark mounting mechanism and a mounting device. The safety-health-environment mark mounting mechanism comprises an underframe assembly mounted on lines and a panel assembly detachably connected with the underframe assembly; the panel assembly comprises a platebody and an indicator detachably connected with the plate body, and snapping buckle members are arranged on the plate body; the underframe assembly comprises snapping grooves snapped with the snapping buckle members and locking mechanisms for locking the snapping buckle members. The mounting device comprises the safety-health-environment mark mounting mechanism and an insulating rod for mountingand dismounting the safety-health-environment mark mounting mechanism, and a hanging hook is arranged on the insulating rod. According to the safety-health-environment mark mounting mechanism and themounting device, the technical problems in the prior art that a safety-health-environment mark is frequent in replacement and short in use cycle, resources are wasted, and the risk is high are solved.

The invention relates to a wallpaper pasting method for building decoration. The wallpaper pasting method for building decoration uses a wallpaper pasting device to flatly paste wallpaper, and the wallpaper pasting method for building decoration comprises the following steps of S1, selecting the proper wallpaper; S2, shoveling the wall skin; S3, brushing a base film and scraping putty; S4, brushing glue; and S5, pasting the wallpaper. The wallpaper pasting method for building decoration has the advantages that by utilizing combination of a paper pressing plate and a rolling shaft and cooperation of a feeding mechanism, automatic wallpaper pasting is achieved, manual work can be replaced, the working efficiency is improved, and the risk of climbing operation of personnel is avoided; and moreover, a movable push plate mechanism and a plurality of limiting switches are used, wallpaper pasting can be carried out on a wall with a socket, and wallpaper cutting at the socket can be automatically completed.

The invention provides a bridge displacement measuring device for bridge construction in traffic construction. The bridge displacement measuring device for bridge construction in traffic construction comprises: a base; a fixing block, the fixing block is fixedly installed on the top of the base; a first groove, the first groove is opened on the top of the fixing block; face tooth block, the first double-sided tooth block is arranged in the first groove, the top of the first double-sided tooth block extends to the outside of the first groove; two second grooves, two of the first The two grooves are respectively opened on the inner walls of both sides of the first groove. The bridge displacement measuring device for bridge construction in traffic construction provided by the invention has the advantages of being suitable for accurate distance measurement during the construction of bridges with different heights, avoiding the risk of high-altitude operation, and being easy to move.

The invention relates to a cock type ball casting device for oil drilling, and belongs to the field of drilling operation auxiliary tools for oil, natural gas exploration and development. The device comprises a main body, an upper valve seat, a cock switch, a lower valve seat and a cage ball valve. Connection threads are formed at two ends of the main body. The cage ball valve is fixed between the upper valve seat and the lower valve seat to form a rotational coordinated body, and the rotational coordinated body is integrally mounted in the main body cavity. The cock switch is cylindrical, and forms a sealing rotational coordinated body with the main body. The cage ball valve and the cock switch form a synchronous rotational coordinated body in the horizontal axial direction. Ball body through holes are formed in the cage ball valve in the longitudinal axial direction, and flow channel through holes are formed in the cage ball valve in the horizontal axial direction. When it is needed to implement the ball casting operation, the cock switch needs to be rotated by 90 degrees to be in the open state, a steel ball falls into the drill though the cage ball valve hollow section to complete the ball casting operation. The cock type ball casting device for oil drilling has the advantages of being flexible to use, good in safety and reliability, simple to operate, capable of saving time and labor, avoiding high altitude operation risks, pithead risks and drill jamming risks.

The invention discloses an anti-rust paint spraying device for long-period smooth operation of a large blast furnace and a using method of the anti-rust paint spraying device. The anti-rust paint spraying device for long-period smooth operation of the large blast furnace comprises a carriage, a paint storage mechanism is arranged at one end of the top of the carriage, and a first connecting hose is arranged at the bottom of the paint storage mechanism. The technical scheme has the beneficial effects that the paint storage mechanism is convenient for better storing paint and preventing the paint from caking, a position adjusting mechanism is convenient for better driving a spraying mechanism to move and adjust the height and the angle of the spraying mechanism, so that the spraying mechanism is better matched with external pipelines for spraying, the spraying mechanism is convenient for better spraying the outer sides of the pipelines, meanwhile, the overall size of the spraying mechanism can be changed by increasing or decreasing connecting short pipes, so that the external pipelines with different sizes can be better sprayed, in addition, the outer side of the high-altitude pipeline is directly sprayed on the ground, so that the operation safety of workers is improved, and the risk of high-altitude operation is avoided.

The invention relates to a cutting device, in particular to a cutting device for a large equipment circular seam. An automatic processing device for an on-line hook face groove of a furnace shell of a super-huge type blast furnace comprises automatic cutting equipment, an annular guide rail is arranged nearby the large equipment circular seam, and the automatic cutting equipment is arranged on the annular guide rail and can be movably connected to the guide rail along the guide rail through a guide wheel mechanism; a positioning guide mechanism comprises a guide wheel transverse arm connected to the top of the automatic cutting equipment and a vertical guide wheel adjusting arm connected to the guide wheel transverse arm through a cross-shaped sleeve, the end of the guide wheel transverse arm is sleeved with a spring and a nut, and one end of the spring abuts against the guide wheel adjusting arm; a guide wheel is arranged below the guide wheel adjusting arm and abuts against the guide rail side; and the automatic cutting equipment extends out to form a cutting arm wound on the lower portion of the guide rail, and the end of the cutting arm is connected with a cutting gun with the adjustable angle. According to the automatic processing device, the cutting quality is effectively guaranteed, the cutting efficiency is improved, the manpower cost is reduced, and the comprehensive benefits are improved.

The invention discloses an electrified on-line detection system for power transmission line fittings, the system comprises a climbing device and a detection device, the climbing device comprises a mounting seat, and the detection device is fixed on the mounting seat. The climbing device is used for conveying the detection device to a power transmission iron tower, then the detection device is usedfor detecting parts such as a power transmission line clamp, defects on the power transmission line are found as soon as possible, and the normal power supply is maintained. Moreover, the device is electrified and autonomously online, the detection operation can be carried out without power failure, the high-altitude operation risk of personnel is avoided, the problems of economic loss and powersupply reliability caused by the power failure are also reduced, and the technology has a wide popularization and application prospect in a power system.

The invention discloses a discharging platform with an overload alarm function. The discharging platform comprises an attachment device, a climbing device, a main bearing frame, a track, a platform beam and a vertical ladder, and further comprises an overload alarm system consisting of an overload alarm platform, a warning device and a display screen, and the overload alarm system can climb mutually with the main bearing frame through the track to realize autonomous climbing with the floor height below 7 m. The overload alarm system has the functions of load real-time display and overload alarm, and data can be in butt joint with a project intelligent construction site platform and monitoring software. The discharging platform has the functions of self-climbing, overload alarm and data transmission, the weight of materials can be displayed in real time, an alarm threshold value can be preset, an acousto-optic alarm can be given through a warning device when the alarm threshold value is reached, the overload phenomenon is avoided, the construction safety is guaranteed, meanwhile a tool type and modular design is designed, compared with a traditional discharging platform, the discharging platform is scientific in structure and is convenient to assemble and disassemble, and the intelligent degree is greatly improved.

The invention discloses a turnover type offshore workover rig safety platform boss safety guardrail. The guardrail comprises guardrail bodies distributed on the two sides of a safety platform boss walkway in parallel, transmission shafts, gears, transmission racks and air cylinders, wherein the transmission shafts, the gears, the transmission racks and the air cylinders are used for transmission;the bottom ends of the guardrail bodies are welded to the transmission shafts, the transmission shafts are arranged at the bottom of the deck surface of a safety platform boss, the gears are connectedwith the transmission shafts through keys, and the gears are meshed with the transmission racks; a hinging ring is arranged at one end of each transmission rack and connected with a piston rod of thecorresponding air cylinder through a pin shaft. The linear motion of the air cylinders is converted into the rotary motion of the transmission shafts through the gears and the transmission racks, theguardrail bodies gradually ascend along with the rotation of the transmission shafts until the guardrail bodies are perpendicular to the deck surface of the safety platform boss, and 90-degree turnover is achieved, so that the high-altitude operation risk of dismounting the safety platform boss guardrail at high altitude is avoided, and folding and recycling are achieved; quick turnover can be achieved, the work safety of derrick men can be improved, and the operation risk coefficient can be reduced.

The invention discloses an impurity cleaning device for a material pneumatic transmission system. A moving body capable of conducting pneumatic transmission in a pneumatic transmission pipeline is included. At least one end of the moving body is opened to form a shovel barrel part so that during transmission of the moving body, the shovel barrel part can be used for shoveling impurities in the pneumatic transmission pipeline into the moving body for collection. The impurity cleaning device has the advantages that the structure is simple and compact, the manufacturing cost is low, operation iseasy, foreign matter in the pneumatic transmission pipeline can be collected in time, the interior of the pneumatic transmission pipeline is kept clean, and maintaining is easy.

The invention provides a claw test instrument and a claw test system. The claw test instrument comprises a jack (4), a lower anchor head (3), a loading hydraulic cylinder (2) and an experimental frame (1), wherein the jack (4) is arranged at the outer side of the experimental frame (1), and the lower anchor head (3) and the loading hydraulic cylinder (2) are arranged at the inner side of the experimental frame (1). The claw test system further comprises a hydraulic pump station and a centralized-control box. The claw test instrument and the claw test system are of horizontal gantry structures so as to avoid the risk of aloft work. A traditional load block loading manner is replaced by a hydraulic loading manner, a fatigue life test can be performed on multiple pairs of jaws at the same time, the infinite loop work of ascending with loads and descending with the loads is achieved in the test process, and the jaw test efficiency is improved. By adopting the novel test instrument, the labor intensity can be reduced, and the whole test process can be finished by only one worker.

The invention relates to a rapid maintenance method for extra-large type blast furnace equipment and provides an automatic finish machining method for a cambered thick plate groove in a suspended state. The method specifically comprises steps as follows: (1), a multifunctional operating platform is erected; (2), a travelling device is arranged; (3), the travelling device is adjusted and positioned; (4), a guide mechanism is arranged, angle adjustment and positioning are performed, and accordingly, a cutting nozzle is aligned to a cutting line; (5), trial cutting is performed, and the cutting nozzle is slightly adjusted; (6), formal cutting is performed, and the groove is formed. With the adoption of the automatic finish machining method, the aloft work risk of a worker is avoided; the problem that the cambered groove cannot be formed by conventional equipment in the suspended state is solved; the cutting efficiency, the levelness and the quality of a furnace shell weld groove are improved, the rapid overhaul time of a blast furnace is shortened, and the method has very high popularization and application value and can be popularized and applied to similar structures or equipment.