54results about How to "Reduce construction and maintenance costs" patented technology

The invention provides an assembly type hydraulic box culvert template and a construction method of a prefabricated assembly type box culvert of the assembly type hydraulic box culvert template, and belongs to the field of highway engineering construction. The assembly type hydraulic box culvert template comprises a template, a hydraulic power system and an adjusting support. The construction method comprises the steps that the assembly type hydraulic box culvert template is installed; the template is used; steel bars are machined and installed; a steel bar framework is hoisted put into the template; an internal mold is installed; the template is installed while concrete is poured; the concrete is poured; the concrete is cured; and the template is removed, and finally the prefabricated assembly type box culvert is prepared. The box culvert can be prefabricated in a centralized mode, and is installed on site, so that a lot of concrete is saved, the construction progress is accelerated,construction cost is reduced, damage and pollution to underground water and soil are greatly reduced, and the box culvert is especially prominent in green and environment-protecting aspects; and the entity quality of culverts is effectively improved, the yield of the appearance and a protection layer is greatly improved, and good economic and social benefits are obtained.

The invention relates to a flowing current separation process coal mine underground gangue dumping system. The technical scheme includes that a run-of-mine coal conveyor is mounted on one side of a feeding end of a roller screen, two ends of an on-screen selected raw material coal conveyor are connected with a front-screen chute of the roller screen and a feeding port of a flowing current separation machine respectively, a block coal of the flowing current separation machine is connected with a dewatering screen, an oversize material discharging end of the dewatering screen is sequentially connected with a block coal conveyor, a block coal transferring conveyor and a pulverized coal conveyor, a high frequency screen is mounted in the middle of the block coal conveyor, under-screen water of the dewatering screen is connected with a concentration tank through a pipeline, the concentration tank is connected with the high frequency screen, a gangue outlet of the flowing current separation machine is connected with a bucket elevator, a discharging end of the bucket elevator is sequentially connected with a gangue conveyor, a gangue transferring conveyor and a gangue warehousing conveyor, under-screen water of the high frequency screen and overflow of the concentration tank are connected with a circulating water tank through pipelines respectively, and the circulating water tank is connected with a water inlet of the flowing current separation machine through a circulating water pump and a pipeline. The flowing current separation process coal mine underground gangue dumping system is simple in process, good in separation effect, low in power consumption and low in operating cost.

The invention provides an indoor relative position determining system and method based on 802.11 series protocols and EBP broadcasting. The indoor relative position determining system comprises a plurality of EBPs (ESSID broadcast points), a plurality of mobile terminals supporting the 802.11 series protocols and a background data processing center. The EBPs are distributed indoors to form an 802.11 microcellular network, each EBP covers a specific region, and ESSID information preset by the EBPs is broadcasted continuously. The mobile terminals obtain an indoor map containing all EBP position information of the system from the background data processing center and receive wireless signals covering the terminals and based on the 802.11 series protocols, a current ESSID is obtained, the ESSID is matched with local pre-stored information, and accordingly the relative positions of the mobile terminals are determined. The background data processing center conducts management on the indoor map and EBP position databases and provides information interaction of positions shared by users.

The invention discloses a medical simulation diagnosis and treatment teaching system based on a cloud platform. The medical simulation diagnosis and treatment teaching system based on the cloud platform comprises a simulation diagnosis and treatment teaching platform, a cloud management and control center, a school management module, a teacher teaching module, a student learning module, a teaching management department static analysis module and a short message platform. By adopting the medical simulation diagnosis and treatment teaching system, students can directly and personally join in analysis and judgment on clinical cases outside conventional teaching modes, due to PBL problem-orientated teaching, the learning impression of different subjects of clinical medicine is enhanced for the students, the learning interest of the students is greatly improved, the students are helped to deeply understand and master special knowledge, the final graduation scores of the students are increased, and the practical capability of the students is improved.

The invention relates to a lightweight train control system based on TAG positioning. The lightweight train control system based on TAG positioning comprises a central device, a station automatic pilot system and an on-board device. The central device is in communication with the station automatic pilot system. The station automatic pilot system is in communication with the on-board device. The central device is used for sending an operation plan and a rail section occupation condition to the station automatic pilot system. The station automatic pilot system is used for adjusting the operationlevel of a train according to the operation plan and rail section occupation condition sent from the central device. The on-board device comprises an on-board automatic pilot system which is in communication with the station automatic pilot system. The on-board automatic pilot system is used for receiving operation plan information of the station automatic pilot system and controlling the train to operate automatically. The lightweight train control system based on TAG positioning is simple in structure, high in expansibility and almost free of dependence, and modifications to existing systems are few.

The invention relates to an automatic lifting monitoring camera device with an automatic coiling function. The automatic lifting monitoring camera device is technically characterized by comprising a lifting track, a camera platform, a pulley block, a motor transmission mechanism and an automatic coiling mechanism, wherein the lifting track is fixedly installed on the surface of a rod body of a high-pole lamp; the camera platform is glidingly mounted on the lifting track; the pulley block is mounted at the top of the lifting track; the motor transmission mechanism is mounted below the lifting track; the motor transmission mechanism carries out lifting operation by pulling the camera platform through a loading steel wire rope; a monitoring camera is mounted on the camera platform; the automatic coiling mechanism and the motor transmission mechanism are connected with each other to coil a wire cable of the monitoring camera. The automatic lifting monitoring camera device with the automatic coiling function not only provides convenient conditions for the mounting and construction of the monitoring camera, but also regularly coils up the wire cable of the monitoring camera, so as to prevent the wire cable from damage caused by involvement, provides convenience for cable arrangement, improves the normal operation of the monitoring camera, saves the space, and reduces the construction cost and maintenance cost.

The invention discloses an electricity bill settlement system in which a charging pile does not directly exchange data with a public communication network, including a charging pile, mobile phone payment software, and mobile phone management software. The charging pile includes a charging module, a display screen, a communication module, and a control module. The charging pile of the present invention does not directly exchange data with the public communication network. In the case of network interruption, the charging pile can interact with the public network through the mobile phone payment software and mobile phone management software, and communicate with the public network through the infrared scanner. The displayed QR code or barcode communicates with the charging pile, enabling two-way secure communication, high multi-service speed, and low construction and maintenance costs, which greatly alleviates the restriction of network interruption on charging pile settlement and improves the utilization rate of charging piles.

The invention discloses a desulfurized reclaimed rubber recycled asphalt mixture and a preparation method thereof, and belongs to the technical field of road engineering materials. The desulfurized reclaimed rubber recycled asphalt mixture is prepared from the following raw materials in parts by weight: 25-45 parts of an old asphalt pavement reclaimed material, 2-8 parts of matrix asphalt, 0.5-4 part of desulfurized rubber powder, 45-60 parts of a new aggregate and 3-8 parts of a component solubilizer. The preparation method comprises the following steps: heating and mixing the recycled asphalt pavement material of an old road and the matrix asphalt, adding the new aggregate, and finally adding the desulfurized rubber powder and the component solubilizer for modification. According to thedesulfurized reclaimed rubber recycled asphalt mixture, environmental pollution can be reduced, and the road maintenance and reconstruction cost can be reduced; and meanwhile, good anti-cracking performance is achieved, and emission of harmful gas can be reduced.

A water-saving technology for curing concrete includes spreading concrete without floating water, sprinkling water, covering by a hydroscopic moisture-preserving cored film, sprinkling water until the cored film is saturated, covering by a surface film, and fixing its edges unitil the curing stage is finished. Its advantages are high curing quality and less consumption of water.

The invention discloses an overhead integral refrigerator, which comprises a cold air unit and a refrigerating unit, wherein the refrigerating unit is used for providing refrigerant for the cold air unit, the cold air unit comprises an evaporator, a fan and a heat isolation box body, the evaporator is arranged in the heat isolation box body, the heat isolation box body is arranged at the top part of a cold storage, the bottom part of the heat isolation box body is communicated with the top part of the cold storage, a flow separating plate is arranged at the communicating part, the heat isolation box body is separated into an air return area and an air outlet area by the flow separating plate and the cold air unit, the fan is arranged in the air outlet area and is used for exhausting the air from the air return area to the air outlet area, and the refrigerating unit and the heat isolation box body are arranged at the top part of the cold storage. The overhead integral refrigerator has the advantages that the overhead integral refrigerator is independent refrigerating equipment, the site construction and installation of the cold storage are convenient, the construction and maintenance cost of the refrigerating equipment is reduced, the quality of the equipment is improved, and the overhead integral refrigerator is suitable for one to fifteen refrigerating equipment.

The invention provides a floating net type building group characterized by city and countryside integration. The floating net type building group comprises a large urban district, medium urban districts, small urban districts, basic level urban districts, urban function zones and rural function zones and also comprises a plurality of water channels in rivers, lakes, seas, canals and ditches and floating bridges floating in the water channels. Each floating bridge at least comprises a longitudinal channel provided with a footway, an electric wheel drive transportation lane and a vacuum magnetic levitation transportation tunnel, and also comprises various public service pipelines for water supply, water drainage, power supply, gas and communication. The floating net type building group is characterized in that the large urban district, the medium urban districts, the small urban districts and part of the basic level urban districts are disposed on the floating bridges in a layered manner; the floating bridges are laid in the rivers, ditches, lakes and seas in a manner of intersecting vertically and horizontally like net lines. The urban and rural building group is distributed along traffic routes continuously as a narrow band; the traffic routes and the pipelines for water supply, water drainage, gas, power supply and communication are arranged in parallel, so that the construction and repair cost is reduced. The city and countryside integration building group structure mode is high in investment efficiency.

The invention discloses an arc-shaped lifting ecological gate. A dam body is provided with a gate groove. An arc-shaped gate blade is arranged in the gate groove, and two support arm grooves are formed in the downstream face of the gate groove and communicate with the gate groove. Support arms are arranged in the support arm grooves. The support arms and the arc-shaped gate blade are fixedly connected into a whole. Each support groove is internally and fixedly provided with a buttress. Each buttress is movably connected with the corresponding support arm through a hydraulic oil cylinder. The upper portion of each buttress is fixedly provided with a gate blade support. Each gate blade support is movably connected with the corresponding support arm through a gate blade rotating shaft. The arc center of the arc-shaped gate blade is consistent with the center position of the gate blade rotating shaft. According to the arc-shaped lifting ecological gate, protruding buttresses on the outer surface of the dam body are completely removed, and therefore the problem that when the gate is in a completely open state, the gate blade and the buttresses resist water and rubbish is solved, the discharge capacity is greatly improved, and the natural ecological environment requirement of a river way is achieved.

The invention provides a method for comprehensively evaluating positioning precision of a train positioning unit. The method comprises the following steps: selecting a SPAN-FSAS integrated navigationsystem as a real-time reference system, calculating an instantaneous positioning error between the same epoch train positioning unit and the real-time reference system, and evaluating the real-time positioning precision of the train positioning unit; and selecting a positioning result of GNSS/INS tight coupling and RTKLIB dynamic mode calculation as a post-processing positioning precision evaluation reference, calculating a post-processing positioning precision evaluation index of a train based on the post-processing positioning precision evaluation reference, and evaluating the post-processing positioning precision of the train positioning unit. According to the method, different high-precision reference systems are selected to serve as the real-time positioning precision evaluation reference and the post-processing positioning precision evaluation reference of the train positioning unit correspondingly, the train positioning precision evaluation index is calculated correspondingly, the positioning performance of the train positioning unit is evaluated comprehensively and quantitatively, and the method has the characteristics of low construction and maintenance cost and capabilityof obtaining absolute positioning precision.

The invention provides an intelligent well lid monitoring system based on an NB-IOT technology, and relates to the technical field of intelligent management of cable tunnel well lids. The intelligent well lid monitoring system structurally comprises a well lid, a lock body, a control box, a cloud server, a PC terminal monitoring system and a mobile terminal APP, wherein the control box and the lock body are arranged on the back surface of a well lid body, the control box is in control connection with the lock body, the control box is connected with the cloud server through a wireless network, and the cloud server is connected with the PC terminal monitoring system and the mobile terminal APP through a network. The intelligent well lid monitoring system has the beneficial effects that the networked monitoring of the well lid is realized, so that the well lid cannot be opened at will, the remote automatic control of unlocking and locking is realized, and the alarm function when the well lid is damaged by external force or illegally opened is realized.

The invention relates to a train reduced scale model device for aerodynamic noise wind tunnel test and a noise test method of the train reduced scale model device, and belongs to the technical field of high-speed train aerodynamic noise test. The device comprises a lower-end fully-closed base, a reduced scale model vehicle body, a plurality of reduced scale passage connection parts, a reduced scale rail, a reduced scale pantograph, a pantograph reduced scale diversion cover, a plurality of reduced scale steering racks and a reduced scale wheel set thereof, wherein the lower-end fully-closed base is used for a detachable reduced scale vehicle body, the reduced scale model vehicle body is provided with a reduced scale cowcatcher and is not provided with a steering rack, and the reduced scalemodel vehicle body and a sub-structure to which the reduced scale model vehicle body belongs are one eighth of sizes of a corresponding true vehicle to be tested and the rail. With regard to the characteristics of a high-speed train model and a noise source position, different model structures are designed to process different noise sources, a free field sensor and sensor array equipment for voice source identification are arranged outside a flow field and are used for acquiring voice radiation information of a model noise source on the outside and information of the noise sources, the main noise source characteristics on the model are analyzed, and the problem of noise contribution of the noise source to the whole model is analyzed.