38results about How to "Reduce routine maintenance costs" patented technology

The invention provides a negative pressure suction dust removal device based on a Venturi effect, and belongs to the field of coal mine dust removal. The problems that an existing dust removal device suitable for the field of coal mine dust removal is too large in size and mass, difficult to move, large in noise, high in daily maintenance cost and the like are solved. The device comprises a box body, a water power fan, a Venturi tube, a desilting assembly, a counter-rotating fan, a filtering cabin and a water tank, wherein an air inlet pipeline, a settling cavity, an air duct and an air outlet pipeline are sequentially arranged in the box body; the hydrodynamic fan is arranged at the inlet end of the air inlet pipeline; the input end of the Venturi tube is communicated with the air inlet pipeline, and the output end is communicated with the settling cavity; the desilting assembly is arranged below the air duct; the counter-rotating fan is arranged in the air duct and is positioned between the settling cavity and the filtering cabin, and the filtering cabin is communicated with the air outlet pipeline; and the water tank is communicated with the filtering cabin and is also communicated with a water inlet of the hydrodynamic fan. The dust removal device is simple in structure, small in size and mass, convenient to move, low in noise and low in daily maintenance cost.

The invention relates to the field of grass mower equipment, in particular to a pure electric new energy hob type grass mower which comprises a frame, a driving system, a lithium battery power system, a control panel and a grass mowing system. The driving system is used for driving the frame to operate and driving the grass cutting system to cut grass; the lithium battery power system is used for prolonging the endurance time of equipment and providing stable power output; the control panel is used for controlling the grass mowing speed of the grass mower and the rotating speed of a cutter head of the grass mower by an operator; the grass mowing system is used for mowing a corresponding lawn; the lithium battery power system is composed of a lithium battery pack. The invention aims to provide the grass mower which is zero in emission, meets the modern environmental protection requirement and can meet the long-time lawn maintenance requirement.

The invention belongs to the technical field of polyurethane coatings, and provides a cellulose nanocrystal enhanced heat-insulating bio-based polyurethane coating and a preparation method thereof, according to the coating, porous cellulose nanocrystals are introduced, and a silicon dioxide film is deposited on the surfaces of the porous cellulose nanocrystals, so that the heat-insulating property, weather resistance and mechanical property of the material are remarkably improved. The castor oil adopted as a bio-based raw material has the advantages of being renewable and environmentally friendly, and the defects of a traditional petroleum-based polyurethane material in the aspects of environmental protection and resource consumption are overcome. Through epoxidation treatment on castor oil, the reaction activity and hydroxyl density of the material are increased, and further fluorination and silanization modification are performed, so that the hydrophobicity, chemical stability and surface energy reduction effect of the coating are effectively improved; the prepared bio-based polyurethane coating has excellent mechanical properties, long-acting weather resistance and an excellent heat reflection effect.

The invention relates to the technical field of data analysis, in particular to an intelligent assessment system and method for safe operation of a silt dam, and the system comprises a data collection module, a data analysis module, an intelligent assessment module and an assessment analysis module. The data analysis module draws a speed time domain graph to determine a historical average speed and a unit speed change frequency in a unit period, and the intelligent evaluation module determines an operation characterization trend to determine an operation characterization state of the silt dam in combination with an upstream and downstream water level difference. Whether safety early warning information is sent out or not is determined according to the operation characterization trend or the operation characterization state, and the assessment analysis module determines a dangerous operation reason according to the judgment result of the dangerous operation state and the upstream and downstream water level difference. Through the functions of real-time monitoring, accurate evaluation, quick response, intelligent analysis and the like, the safety management level of the silt dam is remarkably improved, the safety risk and the maintenance cost are reduced, and powerful technical support and decision basis are provided for inspectors and managers.

The utility model relates to the technical field of agricultural planting, in particular to soilless planting equipment. The water storage barrel is arranged in an open shape, a barrel cover is arranged at the opening of the water storage barrel, a center hole is formed in the barrel cover, a box body is arranged in the middle of the upper end of the barrel cover, the lower end face of the box body abuts against the surface, around the center hole, of the barrel cover, a top cover is arranged on the upper end face of the box body, and a plurality of water inlet holes are formed in the top cover; a supporting plate is arranged at a center hole of the barrel cover and fixedly connected with the barrel cover, an electric water pump is arranged in the water storage barrel and communicated with a water inlet pipe and a water outlet pipe, and the water outlet pipe sequentially penetrates through the supporting plate and the top cover and extends out of the top cover. A plurality of planting grooves extending outwards are formed in the box body. According to the technical scheme, the problems that large-scale production cannot be achieved, the soilless planting cost is high, and the daily maintenance cost is high are solved.

The utility model discloses a fruit and vegetable fresh-keeping storehouse with self -cleaning function, including the frame body that a plurality of stand columns enclose and form, a plurality of height adjustable support assemblies are arranged in layers in the frame body, the clearance for sundries falling is between the support assembly, is provided with the drainage groove board in the frame body bottom, the side of drainage groove board is provided with the drain pipe and the air pipe. This fruit and vegetable fresh-keeping storehouse sets up the shape of goods shelf reasonably, so as to be convenient for placing fruit and vegetable, and the sundries and water stain of its residue can automatically fall into the drainage groove board below after fruit and vegetable, which are automatically discharged through the drain pipe and the air pipe, realize the self -cleaning of goods shelf, and the subsequent fruit and vegetable placement is convenient.

The application relates to the technical field of distributed system data synchronization, and discloses a data synchronization processing method and system based on message driving, a terminal and a medium. In a producer service end, a data synchronization message is generated, a version identifier is injected into the data synchronization message before the data synchronization message is sent to a message middleware, and then the data synchronization message is published into a preset topic or queue through a client of the message middleware; in a consumer service end, the data synchronization message is received from the message middleware, the data synchronization message is intercepted before a business processing logic is executed, the version identifier is parsed and extracted; a corresponding target data source is determined based on a unique identifier of a data table, a current maximum timestamp of the synchronized data is queried from the target data source, the current maximum timestamp is compared with a data version timestamp, and according to a result, it is decided whether the data synchronization message is passed to the business processing logic or an automatic retry mechanism is triggered. The application improves the reliability, data consistency and operation efficiency of a distributed system.

The application discloses an improved disinfection and deodorization air conditioning unit. Air enters from a fresh air inlet, is humidified after passing through a first humidifying section, and becomes wet and has certain adhesion under the action of the first humidifying section, the first fin-shaped cooling coil and the second fin-shaped cooling coil and the sterilization net. The sterilization net forms a high-efficiency wet water film under the action of water vapor in the air conditioner. When the air flows, the bacteria and viruses in the air are intercepted by the wet first fin-shaped cooling coil, the wet second fin-shaped cooling coil and the wet sterilization net, so that better sterilization and disinfection effect on the bacteria and viruses in the air is achieved. In combination with the surface sterilization and disinfection of the inner wall made of the sterilization aluminum material in the lower box body, the three-dimensional disinfection effect is achieved. The sterilization and disinfection effect is generated by the manufacturing material of the equipment itself, no harmful substances are generated, no additional deodorization device and ultraviolet disinfection device are needed, and the manufacturing cost and daily maintenance cost are greatly reduced.

The application relates to a powder discharging and static electricity removing structure and a bean grinder. The bean grinder is provided with the powder discharging and static electricity removing structure. The powder discharging and static electricity removing structure comprises a powder discharging channel. A first plasma generator assembly capable of removing static electricity of powder in a cavity of the powder discharging channel is arranged at the top end of the powder discharging channel. A powder receiving hopper capable of receiving the powder falling from the powder discharging channel is arranged at the bottom end of the powder discharging channel. The powder discharging channel of the bean grinder is separated from the coffee brewing device, so that the powder discharging channel of the bean grinder is not prone to damp, and the amount of residual powder is reduced. The powder receiving hopper is arranged between the powder discharging channel of the bean grinder and the coffee brewing device. The powder receiving hopper can control the floating powder and also can be used as a special powder receiving container for testing the powder discharging precision of the bean grinder, so that one thing has two uses, and the method is convenient and efficient. The static electricity removing device is arranged at the powder discharging joint, so that the floating powder can be prevented, the surrounding environment can be disinfected and killed, and the food safety is effectively ensured.

The maintenance device for the heat exchanger comprises a backflow groove and a main beam body, an electric trolley runs on the main beam body, the electric trolley is provided with an electric hoist, the electric hoist is connected with a lifting hook through a steel wire rope, the lifting hook hooks a lifting plate and lifts a flange cover plate, and the flange cover plate is assembled on a shell of the heat exchanger. The heat exchanger shell is placed on the upper plane of the perforated plate, the cleaning elbow is arranged above the heat exchanger shell, the cleaning elbow is connected with the steering elbow through the transverse pipeline, the steering elbow is connected with the vertical pipeline, and the vertical pipeline is installed on the pipeline pump. The heat exchange efficiency is ensured.

The embodiment of the invention relates to the technical field of hardware circuit design, in particular to a self-detection circuit for multipath stepping motor driving signals, which comprises a plurality of filtering detection units and a comprehensive processing unit, and is characterized in that each filtering detection unit is connected with the comprehensive processing unit and is connected with a stepping motor driver; the comprehensive processing unit is also connected with the control unit; the filtering detection unit is used for filtering n paths of pulse signals output by the connected stepping motor driver, then detecting the n paths of pulse signals, and outputting level signals corresponding to the n paths of pulse signals to the comprehensive processing unit; and the comprehensive processing unit is used for performing logic relation on the level signals corresponding to the n paths of pulse signals output by the filtering detection unit to obtain self-checking signals, and reporting the self-checking signals corresponding to the stepping motor drivers to the control unit. According to the self-detection circuit, the fault can be quickly positioned, the requirement on the technical level of maintenance personnel is reduced, and the maintenance cost is greatly reduced.

The invention discloses a micro front-end filtering system for pyroelectric ion detection, which comprises a sealed box body, the box body is provided with an air inlet and an air outlet, and the box body is internally provided with a first partition plate and a second partition plate; the interior of the box body is sequentially divided into a settling cavity, a coarse filtering cavity and a fine filtering cavity by the first partition plate and the second partition plate, vent holes are formed in the first partition plate and the second partition plate, the coarse filtering cavity is filled with coarse filtering materials, the fine filtering cavity is filled with fine filtering materials, and three vertical baffles are arranged at the top of the settling cavity. The air purifier has an efficient multi-stage filtering mechanism, large particles in air can be effectively removed by integrating the filtering modes of a sedimentation structure, coarse filtering, fine filtering and the like, and especially particles larger than 10 nanometers can be efficiently filtered. The multi-stage filtration ensures the purity of gas entering the detection system, reduces the interference of impurities on pyroelectric ion detection, and significantly improves the sensitivity and accuracy of the extremely early equipment overheating detection system.

The invention discloses an ecological photovoltaic power station in a desert region. The ecological photovoltaic power station comprises a photovoltaic array, an ecological protection layer, a water collection system and an automatic irrigation system. The photovoltaic array is arranged on the ground of the desert area and comprises a plurality of photovoltaic panels, the photovoltaic panels are used for absorbing solar energy and converting the solar energy into electric energy, the ecological protection layer is arranged on the ground below the photovoltaic panels, and the water collection system is used for collecting rainfall in the desert area and condensed water of the photovoltaic panels. The automatic irrigation system is connected with the water collection system and used for providing water for the ecological protection layer. According to the ecological photovoltaic power station in the desert region, land degradation can be prevented, the soil structure can be kept, water and soil loss can be reduced, and attraction and maintenance of biological diversity are facilitated. In addition, the ecological protection layer can also achieve a certain temperature adjustment effect, reduce the temperature around the photovoltaic panel, facilitate the improvement of the working efficiency of the photovoltaic panel, prolong the service life of the photovoltaic panel, and ensure the long-term operation of the photovoltaic power station.

This invention discloses a tube end surface fixation device and a stoma tube assembly. The stoma tube assembly includes a fixation device and a stoma tube body. The stoma tube assembly is used for intubation and stoma placement after colorectal tumor surgery to divert ileal contents and prevent anastomotic leakage. The stoma tube balloon pressure can be monitored in real time, and leakage (incomplete diversion blockage) can be monitored, maximizing the blocking effect of ileal contents. The fixation device includes a base plate, a stoma bag, and a fixator. The base plate is divided into an inner base plate and an outer base plate. The inner base plate is detachably connected to the fixator, and the outer base plate is detachably connected to the stoma bag. By setting the base plate as inner and outer rings, the possibility of displacement of the stoma tube body due to traction when the contents of the stoma bag reach a certain weight is effectively reduced. Patients can replace the inner or outer base plate individually according to specific circumstances without replacing the entire base plate, which saves consumables and simplifies the base plate replacement process, making the replacement process more convenient and safer.

The utility model belongs to the technical field of cattle breeding fences, and discloses a cattle breeding reinforced fence which comprises a plurality of vertical nodes used for vertical supporting, reinforcing devices installed on the outer sides of the vertical nodes and used for forming triangular supporting through pitched roofs, and steel wire ropes connected between the vertical nodes. A plurality of steel wire ropes are arranged in the vertical direction, and a plurality of locking devices used for tensioning and fixing the steel wire ropes are evenly installed on the vertical nodes. The reinforcing device comprises a reinforcing rod, connecting bases are arranged at the two ends of the reinforcing rod respectively, and connecting studs are arranged on the connecting bases. The locking device comprises a limiting sliding sleeve, and a winding assembly used for winding and fixing a steel wire rope is fixedly arranged on one side of the limiting sliding sleeve. According to the reinforced fence for cattle breeding, the range of the fence can be flexibly expanded or the shape of the fence can be flexibly adjusted through the modular design of the vertical nodes and the steel wire ropes, and the requirements of different sites are met; the steel wire rope can reset after loosening and rotating and winding, and daily maintenance cost is reduced.

The application provides an automatic telescopic dynamic self-balancing intelligent control system and method, and belongs to the technical field of intelligent control. In view of the problems of poor coordination, response lag and weak working condition adaptation ability of the existing automatic telescopic operation equipment, the system comprises a sensing module, a control module, an execution module, a communication module and an alarm module. The control module adopts a multi-loop program controller, constructs a multivariable collaborative control loop and is internally provided with an adaptive adjustment algorithm. The corresponding method realizes the synchronous control of equipment telescoping and balancing through parameter initialization, real-time parameter acquisition, collaborative instruction generation, dynamic adaptive adjustment, abnormal monitoring and reset process. The application improves the equipment control precision, response speed and running stability, and adapts to the application requirements of various telescopic operation equipment.

The utility model belongs to the technical field of cigarette detection devices, and particularly relates to a cigarette carton package missing detection device which comprises an upper package missing detection assembly and a lower package missing detection assembly which are arranged in a mirror image mode. Any one of the upper package missing detection assembly and the lower package missing detection assembly comprises a sensor support, an upper package missing detection assembly and a lower package missing detection assembly, the sensor mounting plate is mounted on the sensor bracket; the sensor group is arranged on the sensor mounting plate, a detection probe of the sensor group is exposed outside through one or more openings formed in the side wall of the sensor mounting plate, and the sensor group is used for carrying out packet missing detection on passing cigarette cartons; and the sensor group of the upper packet missing detection assembly and the sensor group of the lower packet missing detection assembly are symmetrically arranged so as to respectively cover the packet missing detection requirements of corresponding positions of the upper row and the lower row of cigarette bars. The device disclosed by the utility model is high in detection sensitivity and reliable in detection result, and effectively avoids the problem of packet missing of the cigarette carton.

The invention discloses an automatic feeding rotary kiln, which is used for realizing that the rotary kiln automatically provides unprocessed metal powder, and comprises a feeding mechanism which is in transmission connection with the rotary kiln, and the power of the feeding mechanism is provided by the rotary kiln; the feeding mechanism is arranged on the rotary kiln and connected with the discharging position of the feeding mechanism, the feeding mechanism comprises a movable plate used for preventing materials from being blocked, and the movable plate is driven by the rotary kiln through the feeding mechanism in a transmission mode. According to the automatic feeding rotary kiln, on one hand, the feeding mechanism is in transmission connection with the rotary kiln, the operation power of the rotary kiln is directly used for driving the feeding mechanism to complete the operation of automatically providing unprocessed metal powder, and an independent driving unit, a speed reduction device and a synchronous control system matched with the feeding mechanism in a traditional scheme are thoroughly omitted; and the consumed energy, the installation occupied area and the production operation energy consumption are greatly saved.

This invention relates to the technical field of water electrolysis hydrogen production equipment, providing a T-type coupled gas-liquid separation and condensation integrated device and its working process for water electrolysis hydrogen production. The device includes a housing comprising a horizontal separation section, a vertical condensation section, and a liquid collection section. The liquid collection section and the vertical condensation section are located on the same vertical plane, with the vertical condensation section positioned above the liquid collection section. The horizontal separation section, vertical condensation section, and liquid collection section are connected and together form a T-shaped structure. A gas deflection channel is formed at the intersection of the vertical condensation section and the horizontal separation section, causing the gas after initial liquid removal to change from horizontal flow to vertical upward flow. The deflection channel forms a flow guiding transition structure to prevent secondary entrainment caused by eddies in the gas flow. This invention employs a three-stage synergistic purification process, achieving excellent gas-liquid separation and demisting efficiency. It utilizes a three-stage synergistic treatment mechanism of gas-liquid cyclone initial separation + deep condensation dehydration + wire mesh demisting, combined with a strong swirling flow field to enhance droplet detachment and a flow equalization plate to optimize airflow distribution, effectively removing electrolyte droplets and water vapor entrained in the gas.

The invention discloses an automatic telescopic reverse countersinking cutter, relates to the technical field of reverse countersinking cutters, and aims to solve the technical problems that machining accidents occur due to inaccurate positioning during reverse countersinking, and the machining efficiency is influenced by cutter avoiding action. The invention has the following advantages: firstly, the step of feeding without avoiding is realized through the automatic retraction and release of the tool apron, the redundant operation is omitted, and the processing efficiency is greatly improved; 2, a two-stage elastic buffer structure is designed, so that hard collision caused by positioning deviation is effectively avoided, and the loss of cutters, workpieces and equipment is reduced; thirdly, head and tail dual axis positioning protection is adopted, the axis deviation problem of sliding connection is solved, and the counter sinking machining precision is remarkably improved; fourthly, cutting heat recycling multi-stage utilization is achieved, passive autonomous operation is achieved in the whole process, and external power and manual intervention are not needed; and fifthly, a whole-course uninterrupted positive pressure protection system is constructed, the overall service life of the tool is greatly prolonged, and the machining efficiency, precision, safety and equipment durability are all considered.

The invention discloses a bridge expansion joint low-carbon quick-hardening early-strength repairing material and a construction method thereof, and belongs to the technical field of engineering construction. The low-carbon quick-hardening early-strength repairing material for the bridge expansion joint is prepared from the following raw materials in parts by weight: sulphoaluminate cement, Portland cement, calcined shell powder, fly ash and silica fume. Reinforced modified fibers, modified shell powder and a water reducing agent. By treating the shell powder and the reinforced fibers, the setting time and the initial strength maturation period of the concrete can be shortened, so that the construction speed and efficiency are improved, the repairing and reinforcing process of the bridge expansion joint is accelerated, the construction period is shortened, and the engineering cost is reduced. The low-carbon quick-hardening early-strength repairing material for the bridge expansion joint can improve the strength and durability of a repairing layer and effectively guarantee safe operation of a bridge, and meanwhile, quick-hardening construction can shorten the traffic interruption time and guarantee quick and normal traffic of a road.

This invention discloses a hybrid braking control method, device, system, and storage medium for maglev trains. The method includes the following steps: when the train enters the platform parking area to prepare for stopping, the traction control unit and the braking control unit receive a braking command and receive a first induction detection signal from the sleepers passing by the train during its journey, a second induction detection signal from a detection element pre-laid along the track in the platform parking area, and an acceleration signal in the direction of train travel; calculate the real-time speed of the train based on the received first induction detection signal, second induction detection signal, and acceleration signal; and control the traction control unit and the braking control unit to perform hybrid braking at a preset speed point until the train stops. This invention has the advantages of simple implementation, low cost, low wear of the brake shoes in the train's mechanical braking system, and high control accuracy and efficiency.

This utility model discloses a lifting-type weft selection device for multi-layer synchronous weaving, including a lifting mechanism. Multiple sets of weft selection mechanisms are arranged vertically along the lifting mechanism, each set including at least one weft selection unit. Each weft selection unit includes a delivery unit and a clamping member fixedly installed at the end of each delivery unit, the clamping member being used to clamp the weft yarn end. Multiple weft insertion mechanisms are arranged vertically along one side of the lifting mechanism, each weft insertion mechanism corresponding to one set of the weft selection mechanisms. The lifting mechanism can adjust the selected delivery unit in each set of weft selection mechanisms to a position opposite to the corresponding weft insertion mechanism through lifting and lowering movements. After alignment, the multiple selected delivery units can drive their respective end clamping members to move closer to the corresponding weft insertion mechanism, delivering the clamped weft yarn end to the clamping area of ​​the weft insertion mechanism. This utility model can integrate the functions of multiple looms vertically to construct a multi-layer synchronous weaving unit.

The invention relates to the related technical field of shot blasting machines, in particular to a shot blasting machine for processing a high-voltage mutual inductor shell, which comprises a shot blasting machine body for processing the high-voltage mutual inductor shell and a shot blasting device arranged on the shot blasting machine body for processing the high-voltage mutual inductor shell, the impeller head comprises an impeller head shell, a feeding hole, a rotating shaft, a blade seat, blades, an impeller distributing wheel and a directional sleeve, the rotating shaft seat is integrally formed on the right side edge of the impeller head shell, and the feeding hole is connected with a material hole in the left side wall of the impeller head shell; a shot blasting device on the shot blasting machine for machining the high-voltage transformer shell is composed of a shot blasting device shell, a feeding port, a rotating shaft, a blade seat, blades, a shot distributing wheel and a directional sleeve in a combined mode, the blade seat is composed of a first-stage annular seat, a second-stage annular seat and a connecting rod in a combined mode, and blade clamping grooves are formed in the first-stage annular seat and the second-stage annular seat. And the blades are detachably mounted on the blade seat, so that the blades can be conveniently and independently replaced, and the daily maintenance cost of equipment is effectively reduced.

The utility model relates to the technical field of automatic fire extinguishing, and particularly discloses an automatic water-spraying fire extinguishing system based on a Beidou satellite navigation system, which comprises a fire extinguishing mechanism which comprises a Beidou-based automatic water-spraying fire extinguishing system front end, a central processing unit, a fire-fighting control center and a mobile control terminal, the fire-fighting control center and the mobile control terminal are both in communication connection with the central processing unit, the front end of the Beidou-based automatic water spraying fire extinguishing system comprises a water outlet nozzle assembly and a water supply assembly, and the control mechanism comprises a fire extinguishing water source conveying assembly arranged between the water outlet nozzle assembly and the water supply assembly; a valve control assembly and a fire induction alarm assembly are arranged on the fire extinguishing water source conveying assembly; according to the device, by arranging the front end of the Beidou-based automatic water spraying fire extinguishing system, all parts and equipment of the water spraying fire extinguishing system can be monitored in an all-weather mode, and accurate fire extinguishing operation can be remotely and automatically carried out.

The present invention relates to the technical field of sludge treatment equipment, particularly to a sludge reduction treatment apparatus, which comprises: a reduction container tank for storing sludge slurry; the assembly shell is fixedly arranged in the decrement container tank, and an input channel is arranged at the bottom of the assembly shell; the assembling notches are formed in the assembling shell and communicate with an inner cavity of the assembling shell; the two ends of the main shaft are rotationally connected with the top wall of the inner cavity of the reduction container tank and the assembly shell respectively; the driving device is arranged on the reduction container tank, connected with the top end of the main shaft and used for driving the main shaft to rotate; the decrement treatment module is arranged on the decrement container tank, is connected with the main shaft and is used for decrement treatment of the sludge slurry; and the dredging module is arranged on the main shaft, connected with the assembling shell and used for dredging the assembling notch. The dredging module is additionally arranged to dredge the assembly notch formed in the assembly shell, so that the defect that in the prior art, solid-phase impurities are likely to block the water outlet is overcome.

This utility model discloses a 6kW power collimation structure with a quick-connect connection structure for beam splitting lenses, belonging to the technical field of high-power laser equipment. The structure includes a main frame, and a QBH head, an aperture, a collimating lens, and a 45° beam splitter arranged sequentially along the optical path. To solve the heat dissipation problem under high power, a first water-cooling connector is provided on the side of the QBH head and the aperture, a second water-cooling connector is provided on the side of the collimating lens mount, and a third water-cooling connector is provided on the side of the beam splitter mount with a spiral groove at its bottom to assist heat dissipation. All water-cooling connector connections are sealed with rubber rings. By replacing the collimation height pad between the lens mount and the main frame, different collimation focal lengths can be accommodated. Each core component adopts a modular design and is quickly assembled into various structures such as F, L, Y, and T types through standardized mechanical interfaces for different application scenarios.

The utility model discloses a kind of baking preheating device of continuous casting machine, it is related to mechanical equipment technical field, including seat plate, the upper end one side of seat plate is equipped with stand, the upper end of stand is connected with rotary frame, burner is installed on rotary frame, the below of burner is provided with direct injection type baker, pipeline assembly is connected with the intercommunication between burner and direct injection type baker, pipeline assembly includes the gas straight pipe of being set in burner side.This utility model, the heating direction of the device is changed from top one-way heating to top-bottom bidirectional double-firing type, the structure is changed from bottom air extraction type to direct injection type, and the structure is more compact, easy to operate, the position of nozzle jet can be adjusted arbitrarily, the inner and outer wall of tundish water gap can be baked evenly, the impurities and gas inside water gap are effectively removed, and the labor intensity of worker, gas backflow risk and equipment failure rate are effectively reduced, the production process performance is ensured, the routine maintenance cost is reduced, and effective reference and solution mode are provided for the same type equipment failure and hidden danger.

The application provides a troweling machine, comprising: a machine body frame; two troweling assemblies arranged at intervals, the troweling assembly comprising a reduction gearbox and a troweling piece, wherein the two reduction gearboxes are swingably arranged along the front-rear direction n and the left-right direction m of the machine body frame, or one of the two reduction gearboxes is swingably arranged along the front-rear direction n and the left-right direction m of the machine body frame, and the other of the two reduction gearboxes is swingably arranged along the left-right direction m of the machine body frame; a first driving device drivingly connected with the two troweling pieces to drive the troweling pieces to rotate; a second driving device drivingly connected with the two reduction gearboxes to drive the two reduction gearboxes to swing; a control device controlling the first driving device and the second driving device to act; and a power supply device supplying power for the first driving device, the second driving device and the control device. The technical scheme of the application can effectively solve the problem of high use and maintenance cost of the troweling machine in the prior art.

The utility model discloses a kind of heat dissipation structures of swimming pool waterproof gear box, including cleaning roller brush, gear box assembly, output end fan leaf and metal bottom plate, gear box assembly is set in cleaning roller brush and forms heat dissipation passage between both, the front end of gear box assembly is power output end, output end fan leaf is connected on the power output end of gear box assembly and located between the front end of gear box assembly and cleaning roller brush, gear box assembly rear end is connected with metal bottom plate, and gear box assembly rear end and cleaning roller brush are connected by roller brush connecting assembly;Front heat dissipation hole is provided in the front side of cleaning roller brush, rear heat dissipation hole is provided on roller brush connecting assembly, heat dissipation passage both sides are respectively communicated with front heat dissipation hole and rear heat dissipation hole, the utility model proposes a kind of heat dissipation structures of swimming pool waterproof gear box, heat generated when waterproof gear box runs is carried away by water flow, prolongs the operating life of waterproof gear box, reduces user routine maintenance cost.