37results about How to "Good maintenance cost" patented technology

A method for treating the As-polluted soil features that the Chinese brake herbs are planted in said soil for absorbing the As from the soil and the their leaves are removed periodically (5-6 months). For acid soil, the lime or alkaline fertilizer can be applied to increase its pH value.

The invention belongs to the technical field of door devices of subway equipment and relates to a linear motor drive device of a shifting door. A linear motor component is composed of a linear motor stator, a linear motor rotor and a limit base. The limit base is fixed at two ends of the linear motor stator through bolts; a slide component is composed of a slide base, a linear guide rail component, a drag chain plate which are matchedly assembled, a drag chain and a Hall component, wherein the slide base is connected with the linear motor rotator and the linear guide rail component respectively through holts, the linear guide rail component is fixed on one side of the linear motor stator through a bolt, the Hall component is fixed on the slide base through a bolt, and Hall magnetic steel is attached and fixed on the linear motor stator; a number reading head is fixed on the slide base, and a magnetic railing ruler is attached on one side of the linear motor stator; and the Hall magnetic steel is distributed at two ends and in the middle of a whole stroke. The linear motor drive device of the shifting door is simple in structure, reliable in principle, mature in manufacture process, low in manufacture cost, good in operation safety, long in service life, environment friendly, small in noise and occupied space, and free of friction loss.

The invention belongs to the technical field of gas storage, and relates to a preservation method of high-pressure gas deeply embedded underground. According to the invention, an area with hard geological structure is selected as a gas preservation site; a base is dug on the selected gas preservation site; a construction channel or a working chamber is preserved in the base; a cylindrical steel liner is welded in the inner cavity of the base through the construction tunnel and the working chamber; network steel bar concrete or network steel bar asphalt mixture is filled in the space between the steel liner and the base, and an anti-corrosion treatment is carried out on the periphery of the steel liner; compressed gas to be stored is filled into the steel liner through a gas inlet pipe and a valve on the top of the steel liner under the control of a compression pump, and the state in the steel liner is controlled through a monitoring device; high-pressure gas stored in the steel liner is monitored regularly, such that gas pressure, temperature, water content, and density parameters of high-pressure gas stored in the steel liner are controlled in real time. The process principle is reliable, storage safety is good, control is flexible, operation cost is low, and the method is environment-friendly.

A twisting-resistant self-restoring lead core shape memory alloy damper consists of a shape memory alloy cylinder, shape memory alloy extruding beads, shape memory alloy flanges and a lead core. The damper is characterized in that the shape memory alloy extruding beads are symmetrically distributed along the peripheral radial direction of the shape memory alloy cylinder which is fully filled with lead; the damper is fixed at a part in need of twist control through the flanges; when the upper and lower flanges have relative twisting motion, the shape memory alloy cylinder and the lead core consume energy, and the extruding beads extrude the lead core to consume energy, so that the three parts provide strong twisting-resistant energy consumption capability; and when the vibration is over, the damper automatically restores to the primary position. The damper has advantages of strong twisting-resistant energy consumption capability, low maintenance cost, repeated use, self restoration, simple structure, easy installation and the like, simultaneously has vertical vibration energy consumption capability, and can achieve multi-dimensional passive control of the structure.

The present invention provides a novel bed sewage ecological restoration technology. According to the present invention, submerged plants are combined with the network bed technology to realize the full absorption of nutrients by the plants, and ultimately the purpose of recovering the natural ecosystem is achieved. The stain resistant, high temperature resistant and low temperature resistant submerged plants are selected to ultimately realize the riverway aquatic plant decontaminating function yearly. Net cages can be hung under the network beds to farm fishes, snails, shellfishes, and the like. During the restoration of the water, aquatic products can also be obtained. Compared with the conventional water environmental restoration methods, the novel bed sewage ecological restoration technology is more ecological, more environmental-friendly, more energy-efficient, and more economical, makes up for the defect of clearing contamination by changing water, overcomes the limitations of bottom in the restoration waters, and has broader application and simple maintenance.

The invention belongs to the technical field of connecting hoses, relates to hose joints, in particular to a gas-water joint assembly and solves the technical problems such as unreasonable design of the prior art. The assembly comprises an outer connecting joint and a pipe end joint; the pipe end joint is connected with an outer hose and an inner hose arranged in the outer hose in a penetrating mode; the inner hose is provided with a water flow channel; a gas flow channel is formed between the outer hose and the inner hose; the pipe end joint is provided with a water passing channel and a gas passing channel, which are mutually separated; the water flow channel is communicated with the water passing channel; the gas flow channel is communicated with the gas passing channel; the outer connecting joint is provided with a water inlet/outlet channel and a gas inlet/outlet channel, which are mutually separated; the outer connecting joint and the pipe end joint are fixedly connected by a positioning structure. The gas-water joint assembly has the advantages that 1, the design is reasonable, the structure is simple and water flows and gas flows can be stably outputted; 2, the structural strength is high, the airtightness is good and the gas-water joint assembly is suitable for different weathers and environments; 3, the cost and maintenance cost are low, the assembly and disassembly are convenient and the service life is long.

The invention relates to the field of energy conversion, in particular to a wind power station and a power generation method thereof, which can effectively utilize wind energy to generate electricity, reduce construction cost, prolong service life and be convenient to overhaul. The wind power station comprises a vertical wind wheel set comprising a plurality of wind wheels vertically arranged or a horizontal wind wheel set comprising a plurality of wind wheels horizontally arranged, and a support framework, wherein each wind wheel of the vertical wind wheel set is connected with a power generator through a vertical shaft, each or each group of horizontal wind wheels are connected with a power generator through a horizontal shaft, the support framework comprises a plurality of layers arranged from bottom to top, a plurality of vertical wind wheels are respectively arranged on the layers, or a plurality of wind wheels of each group of vertical wind wheels are respectively installed on the same layer of the support framework, each vertical wind wheel or each horizontal wind wheel comprises a plurality of wind blades, and a plurality of fan blades are arranged surrounding the vertical shafts or the horizontal shafts and rotate around the vertical shafts and the horizontal shafts.

The invention relates to the technical field of diesel generating sets, and discloses a diesel generating set with good low-temperature starting performance and a low-temperature starting method. Thediesel generating set with the good low-temperature starting performance comprises a controller of the diesel generating set, an intake preheating grid and an intake fuel air heater which are respectively used for heating the intake air of an engine of the diesel generating set, a direct-current engine oil heater used for heating the engine oil of the diesel generating set, an engine oil temperature sensor which is used for detecting the temperature of the engine oil and an air temperature sensor used for detecting the temperature of the surrounding environment, and the air inlet preheating grid, the air inlet fuel oil air heater, the direct-current engine oil heater, the engine oil temperature sensor and the air temperature sensor are respectively connected with the controller. Accordingto the present invention, the low-temperature starting performance of the diesel generating set is improved, and meanwhile the later-period unit maintenance cost is reduced.

The invention belongs to the technical field of broacher devices, in particular to an automatic backlash-eliminating dividing device used for a numeral control helical deep hole broacher. The device comprises a box body, an alternating current servo motor, an input-output mechanism, and a circular grating detection mechanism. In the device, scale division is controlled directly through the alternating current servo motor; and through pushing a driving axle to glide axially by an adjusting washer and a disc spring, the driving axle and a double-tooth backlash-eliminating mechanism consisting of driven wheels can automatically compensate to eliminate backlashes after a gear is worn. The driving device of the invention has the advantages of low cost and maintenance cost, high safety, and good reliability.

The invention relates to an underneath pass culvert road traffic safety assessment device and method, a medium and equipment, and the method comprises the steps: triggering water sensors preset at different positions of the inner side wall of a culvert to carry out the data collection through the water level when the water level in the culvert changes, and transmitting the data to a preset intelligent control unit; a soil pressure gauge and a soil water content monitor which are arranged in the road surface in advance collect state data of the road surface in real time and transmit the state data to the intelligent control unit; the intelligent control unit analyzes the water level condition according to the received information, evaluates the road pressure resistance, determines whether to give an alarm or not, and determines whether the vehicle can pass or not; and an alarm is generated and transmitted to the electronic display board to display passing prohibition, so that vehicles are prevented from passing in time. Operators can be effectively prompted to timely open the gate to drain water, and damage to facilities such as a bridge floor and a roadbed is prevented.

The invention discloses a low-energy-consumption hybrid white smoke elimination device, which comprises a mixing tower, wherein three openings are formed in the mixing tower; two of the openings are air inlets and are respectively connected with a multiple layered dehydration guide device of chimney exhaust gas and a belt cooler exhaust gas conveying device; the other opening is an air outlet and is directly connected with outside air; the multiple layered dehydration guide device of chimney exhaust gas comprises a T-joint and a dehydration tower, a dehydration elbow and an draught fan which are connected with the T-joint in sequence; the air outlet of the draught fan is connected on the mixing tower through a pipeline; the belt cooler exhaust gas conveying device comprises a belt cooler; a chimney is arranged on the belt cooler; a smoke hood is arranged at the top end of the chimney and is connected with the mixing tower through a pipeline. According to the low-energy-consumption hybrid white smoke elimination device, not only is the installation and maintenance cost of the device reduced, but also is the operation cost of the device reduced; the treatment effect of white smoke is greatly improved.

The invention relates to a yarn guide device having an original-point positioning function. The yarn guide device comprises a base plate and a main synchronous belt, wherein four fixing shafts are symmetrically welded on the upper end face of the base plate, four driving belt wheels are respectively installed on the four fixing shafts through bearings, and the four driving belt wheels can stably rotate on the four fixing shafts. Drive holes are formed in the middle of the base plate, two installing plates are symmetrically installed at the upper end and the lower end of the middle of the base plate through bolts, driving shafts are installed in the middles of the two installing plates through bearings, and the middles of the driving shafts penetrates into the drive holes formed in the base plate. The driving belt wheels are installed at the upper ends of the driving shaft in an interference fit mode, and secondary driving branch chains are installed at the lower end of the driving shafts. Two yarn guide branch chains are symmetrically and vertically installed on the front side and the rear side of the base plate through bolts. A sensing branch chain is installed on the front side of the base plate. The yarn guide device can achieve a full-automatic, high-quality and stable yarn winding function.

The invention discloses an intelligent ventilation and heat dissipation-type building, which comprises a building body, a roof and multiple unpowered wind balls. Each unpowered wind ball comprises a wind pipe, a wind ball base arranged on the roof, a rotating ball cap arranged on the wind ball base, and an air extraction impeller arranged in the wind pipe and coaxially connected with the rotatingball cap. The rotating ball cap is in rotary connection with the wind ball base. One end of the wind pipe is communicated with the inner part of the building and the other end of the wind pipe is communicated with the inner part of the rotating ball cap. The building body is provided with multiple air exchange ports. The building is provided with multiple heat exchange plate groups, each heat exchange plate group comprises a plurality of parallelly-arranged heat dissipation vertical plates, and the heat dissipation vertical plate passes through one side wall of the building body. The heat exchange plate group also comprises a heat dissipation transverse plate, and the heat dissipation transverse plate is located outside the building body and is connected with one side wall of the buildingbody. The intelligent ventilation and heat dissipation-type building has the beneficial effects that ventilation and heat dissipation can be effectively carried out; no electrifying device needs to beadded; the maintenance cost is low; and the safety is good.

The invention discloses a vehicular brake pedal with an adjustable lever ratio, which comprises a pedal base, a pedal support and a pedal arm, wherein the pedal arm is arranged on the pedal support, the pedal support is arranged on the pedal base, the pedal base is connected with a vehicle body through bolts, the pedal arm consists of a pedal upper arm and a pedal lower arm, the pedal upper arm and the pedal lower arm are respectively provided with a corresponding adjustor, each adjustor consists of a longitudinal adjusting slot and a transverse adjusting slot, each adjustor at least comprises two or more longitudinal adjusting slots, and the longitudinal adjusting slots are communicated with the transverse adjusting slots. The vehicular brake pedal with the adjustable lever ratio disclosed by the invention has the lever ratio which can be automatically adjusted according to different requirements of drivers on the feeling of the pedal, and can provide more convenient pedal parameters for the performance machining of a brake system so that the brake system with good pedal feeling is designed; and the vehicular brake pedal with the adjustable lever ratio has the characteristics of low manufacturing cost, low maintenance cost, long service life and the like.

The invention discloses a dynamic sealing device for the inner side of the bottom of a cooling bed trolley and a sealing method of the dynamic sealing device and relates to a sealing device of a cooling bed trolley on a sintering machine. The dynamic sealing device for the inner side of the bottom of the cooling bed trolley and the sealing method of the dynamic sealing device aim at overcoming the defect that the sealing effect between an existing cooling bed trolley and a bottom static beam is poor. The dynamic sealing device comprises the cooling bed trolley, upper connecting parts, lower connecting parts and sealing parts. The cooling bed trolley slides relative to a lower static beam through wheels on the cooling bed trolley; the upper connecting parts are arranged on the two sides of the bottom of the cooling bed trolley correspondingly, and the lower connecting parts are arranged at the positions, corresponding to the lower portions of the upper connecting parts, on the static beam. The inner side walls of the upper connecting parts are provided with the sealing parts with the lower ends abutting against the lower connecting parts. Each sealing part comprises at least one layer of steel brush. The dynamic sealing device for the inner side of the bottom of the cooling bed trolley and the sealing method of the dynamic sealing device well solve the problem that the sealing effect between the cooling bed trolley and the bottom static beam is poor.