918 results about "Confined space" patented technology

The invention discloses a self-adaptive gait control method, system and device for a quadruped robot in a limited space and a medium, and belongs to the technical field of gait control. Identifying terrain categories through a classifier and acquiring initial gait parameters from a gait library; adjusting the gait parameters according to the terrain gradient and the roughness to obtain optimized gait parameters; calculating stability indexes and fusing scores; when the score is lower than a threshold value, an adjustment strategy is determined according to an instability mode to correct gait parameters; a foot end track is generated and control is executed; and the executed information is fed back to terrain perception to form a closed loop. According to the method, the terrain recognition accuracy is improved through multi-modal information fusion, the adaptive mapping from the terrain to the gait is established to achieve automatic gait switching and parameter optimization, the stability is evaluated through multi-index fusion, a targeted adjustment strategy is selected according to an instability mode, the adaptive gait control problem under the limited space and the complex terrain is solved, and the adaptive gait recognition accuracy is improved. And the movement efficiency and the stability are improved.

The invention provides a BIM (Building Information Modeling)-based engineering electromechanical installation method. The method comprises the following steps: establishing an engineering electromechanical BIM model; carrying out model collision check and optimization; construction simulation and scheme making are carried out; field installation and implementation; and installation acceptance and model filing. According to the method, the geometric and attribute integrated BIM model is constructed through data collection and digital drawing review, full-dimensional collision detection is carried out, key pipeline specification requirements are preferably guaranteed, model data reliability is guaranteed, construction disjunction caused by drawing errors is avoided, the problem of pipeline collision is solved in advance, and the construction efficiency is improved. Material waste and construction period delay of dismantling and reassembling in the construction stage are reduced, meanwhile, the risk of illegal acceptance of key pipelines is reduced, and the limited space utilization rate is increased.

The invention discloses a thermal power plant limited space operation safety and environment multi-parameter monitoring system, and relates to the technical field of operation safety monitoring. A structure parameter model is constructed based on a space volume structure, a gas exchange path, a risk type and an operation position, and multi-parameter sensing nodes are configured; extracting abnormal fluctuation characteristics of the environmental parameters through edge computing nodes; a gas flow model and a heat distribution model are combined to carry out space-time inversion, a risk source is positioned, a space risk heat map is dynamically generated, the position and action state of an operator can be obtained in real time, the exposure probability is calculated, and automatic identification and graded early warning of a high-risk area are realized; the system has high-precision, low-delay and full-coverage monitoring capability, and the intrinsic safety of limited space operation of the thermal power plant is improved.

The invention discloses a limited space gas monitoring and emergency response method and system based on multi-modal sensing and intelligent decision, and a storage medium, and aims to solve the problems of one-sided monitoring, low recognition precision and the like in the prior art. The method comprises the steps of system initialization and parameter configuration, multi-modal data real-time acquisition and transmission, fusion analysis and risk identification, leakage source positioning and concentration field modeling, multi-stage dynamic emergency response, emergency process adjustment interaction and system self-learning optimization. The system comprises a multi-mode sensing assembly, an intelligent decision-making module and the like, and can integrate a personnel positioning system and an access control system. According to the method, the risk identification precision is improved through multi-source data fusion, the response pertinence is enhanced through a dynamic emergency strategy, the adaptability is guaranteed through a self-learning and linkage mechanism, and comprehensive safety guarantee is provided for limited space operation.

The invention discloses a manhole cover plate fence linkage protection device and method with a safety monitoring function, and belongs to the technical field of limited space operation safety protection. Comprising a device basic component, a fence, a locking mechanism, a linkage mechanism, a cover plate and a monitoring system. The device foundation component is mounted on the inner wall of the orifice; the fence is arranged in the device basic component and can ascend and descend. The fence is composed of a fan blade fence and a fence door. The locking mechanism is installed on the device foundation component and the fence and used for effectively locking the fence under the full-open-position isolation working condition. The linkage mechanism is connected with the fence and the cover plate. The monitoring system comprises a fence position detection device and a detector. Linkage of a manhole opening protection facility and safety monitoring is achieved, and the safety of limited space operation is effectively improved.

The invention discloses a modular assembly type hydraulic jacking portal crane which comprises a rail device, a hydraulic jacking device and a hydraulic jacking device. The number of the walking devices is two, the walking devices are movably arranged on the left track and the right track respectively, each walking device comprises a power unit and a walking vehicle, and the power units are connected to the walking vehicles in a replaceable mode and used for driving the walking vehicles to move along the track devices; the supporting device is detachably arranged on the walking vehicle; the cross beam is detachably arranged on the supporting device; wherein the rail device, the walking device, the supporting device and the cross beam are all of modular structures and can be adaptively adjusted and assembled according to needs, and the driving friction force of the power unit relative to the rail device can be adjusted. The crane can efficiently and conveniently complete manual installation, hoisting operation and disassembly transition in a high-floor room and other scenes with limited space, the driving friction force can be accurately and efficiently adjusted, and efficient and safe load hoisting can be achieved.

The invention discloses an operation risk early warning method and system based on a limited space, a medium and a product, and relates to the field of risk analysis. The method comprises the following steps: firstly, acquiring operation state parameters of operation equipment, and automatically identifying current operation stages with different inherent risk attributes according to statistical characteristics of the operation state parameters; then, calling a preset monitoring strategy matched with the operation stage; then, acquiring current and historical environment monitoring data according to the monitoring strategy, and calculating change trend characteristics of the current and historical environment monitoring data; and finally, performing comprehensive risk judgment by integrating the current monitoring data, the change trend characteristics and the identified operation stage to obtain a current risk state, and sending early warning information when the risk state is early warning or dangerous. According to the method, the operation stage is automatically identified, and the monitoring strategy and the risk model are dynamically adjusted, so that intelligent and prospective early warning of the limited space operation risk is realized, and the effectiveness and the accuracy of safety management are improved.

The invention discloses a method and a device for determining gas risk parameters of a limited space and electronic equipment. The method comprises the following steps: acquiring environment data of a limited space; determining a first concentration characteristic corresponding to the target gas according to the gas data; determining a second concentration characteristic corresponding to the target gas according to the gas data, the first concentration characteristic and associated data corresponding to the associated gas; determining a target concentration characteristic corresponding to the target gas according to the temperature data, the humidity data and the second concentration characteristic; and determining a gas risk parameter corresponding to the limited space according to the target concentration characteristic. According to the method and the device, the technical problem that potential gas potential safety hazards in the limited space are difficult to identify in time due to inaccurate determination of the gas risk parameters when the gas risk parameters in the limited space are determined in the prior art is solved.

The invention discloses a numerical simulation method for oil product evaporation and oil gas concentration distribution prediction in a confined space, and belongs to the technical field of oil product evaporation simulation in the confined space, and the method specifically comprises the following steps: constructing an oil product evaporation multiphase flow model of the confined space; the Lee phase change model is improved through a user-defined function UDF, and the difference value between the vapor partial pressure and the saturated vapor pressure is dynamically calculated to trigger the evaporation process; performing CFD simulation on an oil and gas distribution rule in the confined space; performing comparison verification on the CFD simulation result and experimental data; and predicting the time-varying concentration gradient distribution rule of oil and gas in the limited space based on the Lee phase change model. According to the numerical simulation method for oil product evaporation and oil gas concentration distribution prediction in the limited space, the concentration gradient distribution rule of oil gas in the limited space can be accurately predicted, an important reference basis is provided for an oil product leakage emergency disposal strategy, and the prevention and control capacity and the emergency disposal efficiency of oil product leakage accidents can be improved.

The invention provides a floating mechanism for blind plugging connection and a liquid cooling blind plugging connection system. The floating mechanism comprises a mounting fixing seat fixedly connected with a case; the joint mounting seat is used for mounting a blind-plug joint; the floating connecting assembly is connected between the mounting fixing seat and the joint mounting seat and is configured to allow the joint mounting seat to float in a radial plane relative to the mounting fixing seat; the independent guide mechanism is arranged between the mounting fixing seat and the joint mounting seat and is separated from the floating connecting assembly in space; the independent guide mechanism is configured to restrain axial deflection of the connector mounting base when the connector mounting base floats in the radial direction. The blind plug connector is used for solving the problem that an existing blind plug connector cannot meet the dual requirements of compensating macroscopic assembly tolerance and restraining microcosmic angle deflection at the same time in a limited space due to mutual restriction of the floating amount and the deflection control capacity, and consequently plug-in failure is caused.

The invention provides a method and system for evaluating the spontaneous combustion risk of a fire in a confined space, and relates to the technical field of fire evaluation, and the method comprises the steps: constructing a ceiling impact fire model based on the confined space, the optimized discretization parameters of the ceiling impact fire model are determined by simulating and verifying free fire plume based on an open space in advance; based on the ceiling impact fire model, performing numerical simulation under various ventilation limitation degrees and various heat release rates to obtain a simulation result; based on the simulation result, extracting concentration distribution data and flue gas temperature distribution data of unburned fuel at the ceiling position; and comparing the concentration distribution data of the unburned fuel and the flue gas temperature distribution data with corresponding combustion thresholds, and evaluating the spontaneous combustion risk of the limited space according to a comparison result. According to the invention, the assessment of the fire spontaneous combustion risk can be accurately quantified, and the serious dependence on artificial experience is avoided.

This invention discloses an obstacle-crossing robot for use in confined spaces inside pipelines, comprising a robot body, a drive system, a navigation and positioning system, and a control system. The drive system includes a main walking mechanism and a front swing arm mechanism. The front swing arm mechanism is coupled to the main walking mechanism via a differential mechanism, enabling it to change its posture relative to the robot body and possessing independently driven swing arm tracks. The control system is configured to acquire real-time posture information during the posture change of the front swing arm mechanism and dynamically adjust the parameters of the sensors in the navigation and positioning system based on this real-time posture information to compensate for the impact of sensor pose changes caused by swing arm movements on positioning accuracy. This invention solves the technical problem of decreased positioning accuracy due to swing arm movements in existing technologies through the coordinated control of swing arm obstacle crossing and navigation and positioning, improving the positioning accuracy and obstacle-crossing stability of the robot during pipeline inspection, and is suitable for internal inspection and testing tasks of various pipelines.

The present invention provides a process to implement and control localized air- conditioning of occupied regions in large confined space to reduce HVAC energy consumption comprising delineating the space into multiple micro-zones based on a first level of protocol and static parameters thereof including planned activities, occupancy patterns, diffuser characteristics, and furniture layout and controlling airflow through diffusers in the occupied and unoccupied micro-zones to achieve setpoint temperature or thermal comfort only in the occupied regions using minimum HVAC energy through implementing a second level of protocol with dynamic parameters relating to the micro-zones including real-time occupancy, thermal comfort preferences, ambient conditions, and inter-micro-zonal thermal interactions.

As shown in the reference figures 1 and 2 illustrating the usage state, this product is a box-end wrench that can be fitted onto the bolts of an auto tensioner without interfering with, for example, the crank pulley or belts attached to each pulley (water pump belt, generator belt) of an automobile engine, making it easy to attach and detach the bolts. In other words, this box-end wrench makes it possible to fit bolts in confined spaces during automobile maintenance, etc., without interfering with other parts.

The utility model provides a film magazine carrying manipulator mechanism and film coating equipment. The manipulator mechanism comprises a plurality of synchronous belt modules, a gripper assembly and a lifting mechanism; wherein the lifting mechanism is used for driving the gripper assembly to move in the vertical direction, the synchronous belt modules are used for driving the gripper assembly to move in the transverse direction, and a gripper of the gripper assembly can support a wafer box located on a reacting furnace or a conveying mechanism when moving along with the lifting mechanism and the synchronous belt modules. And the wafer box is carried to the reaction furnace from the designated position of the conveying mechanism, or the wafer box is carried to the designated position of the conveying mechanism from the reaction furnace. According to the utility model, the functions of the push boat and the manipulator of the traditional coating equipment are combined, so that the number of moving parts in the carrying process of the film box is reduced; and a double-module synchronous belt translation transmission mechanism is adopted, and the feasibility of realizing long-distance carrying in a limited space is greatly improved through the laminated double-module synchronous belt translation transmission mechanism.

This invention belongs to the field of intelligent push notifications, and particularly relates to an intelligent push notification method and system for confined space operation approval processes. The method includes: obtaining the identifier of the pending approval node and the associated set of approval parameters for the target operation application; mapping and formatting the operation application information according to the mandatory approval field requirements to generate a dedicated approval form for each node; refreshing the real-time approval task cache with the dedicated form when a push notification is detected; collecting the approver's running status feedback value, matching it with the permission list to obtain the permission verification result, and comparing it with the timeliness threshold to obtain the timeliness detection result; if the permission verification is successful and the timeout has not occurred, and if the task is completed and the information is complete, generating a push priority based on the next node approver's permission level and historical response time, and simultaneously pushing it to their APP and PC terminals and updating the records; otherwise, generating an approval timeout reminder and pushing it to relevant parties and marking it as abnormal. This invention achieves dynamic tracking and intelligent push notifications, improving the timeliness and traceability of approvals.

The utility model relates to the technical field of work clothes, and discloses a fit one-piece work clothes suitable for operation in a narrow space, which comprises a work clothes main body, a plurality of parallel transverse organ folds are arranged at the back waist part of the work clothes main body, and each transverse organ fold horizontally extends along the axis of the lumbar vertebra of a human body. The folds are integrally formed by an outer aramid fiber protective fabric layer and an inner high-elasticity knitted fabric layer in a hot-pressing composite mode. Through the composite design of the transverse organ wrinkles and the high-elastic lining, on the basis of maintaining slim fit of the conjoined clothes, the skin deformation track of waist bending-stretching is dynamically matched, the problems of action lagging and clothes wrinkle redundancy caused by waist size rigidity limitation are thoroughly solved, and the conjoined clothes are more comfortable to wear. And meanwhile, the protective property, the dynamic fitting property and the quick resetting capability are considered.

This application discloses a path planning method, apparatus, medium, and product for an aircraft traction system in confined spaces, relating to the field of aircraft path planning technology. The method includes: establishing a kinematic model of the aircraft traction system located in a hangar; constructing a path planning mathematical model based on the kinematic model; employing an improved hybrid algorithm to perform path search on the aircraft traction system based on the path planning mathematical model to obtain the target path of the aircraft traction system; the improved hybrid algorithm is derived from a hybrid algorithm, and the improvements include: using RS curves for bidirectional node expansion; setting the cost function to include the cumulative historical cost from the starting node to the current node and the heuristic cost from the current node to the target node; and establishing a closed table distinguishing between forward and backward directions. This application realizes path planning for an aircraft traction system in confined spaces.

The invention is suitable for the technical field of nuclear power, and provides a nuclear power confined space detection system, which comprises a safety helmet, first electronic equipment and second electronic equipment, the safety helmet is used for collecting information of an operator in the working process and sending corresponding information to the first electronic equipment according to the collected information, the operator wears the safety helmet in the working process, and the collected information comprises the environment oxygen content of the environment where the operator is located; the first electronic equipment is used for receiving and analyzing the information and selecting whether to output corresponding prompt information on the first electronic equipment or not according to an analysis result; the first electronic equipment is further used for collecting voice information sent by the guardian through the microphone and sending the voice information to the safety helmet; the first electronic device is further used for sending the identification of the safety helmet, the collected information and the analysis result to the second electronic device. Through the method, the probability of accidents caused by human factors can be reduced.

The present application belongs to the technical field of agricultural machinery, and particularly relates to a tomato picker used in narrow space, which comprises a moving part for driving the picker to move, a picking end part arranged at the movable end of the moving part, the picking end part comprising a turnover mechanism connected with the movable end of the moving part, the movable end of the turnover mechanism being connected with a holding-shearing mechanism for picking tomato fruits, the holding-shearing mechanism being arranged in a structure of being narrow at the top and wide at the bottom, the holding-shearing mechanism being provided with a temporary storage cylinder, and the turnover mechanism being used for making the holding-shearing mechanism turn over so that the tomato fruits picked by the holding-shearing mechanism are dropped into the temporary storage cylinder for temporary storage. When picking tomatoes, the structure of being narrow at the top and wide at the bottom of the holding-shearing mechanism can prevent the holding-shearing mechanism from damaging unripe tomatoes, meanwhile, multiple tomatoes can be temporarily stored in the temporary storage cylinder, so that the picking efficiency is higher and the picking effect is better.

The utility model relates to the technical field of unmanned plane flight state switching, especially to a state switching structure of amphibious unmanned plane, including land walking mechanism for land walking and aerial flight mechanism for aerial flight, and the aerial flight mechanism includes state turnover assembly and drive assembly, the utility model combines two application fields of land tunnel survey and aerial survey, land free steering, fuselage structure change, land-air flight state free switching control, through changing the body structure, reducing the volume, possessing the ability of crossing limited space, can realize the monitoring and measurement to the underground and aboveground environment, the fuselage structure and the flight state change make that the unmanned plane can obtain the lift of multiple angles, when unmanned plane and bottom level, can provide the lift upwards / downwards, and the unmanned plane can execute aerial survey task, when unmanned plane and bottom vertical, can provide the thrust forwards / backwards, and the unmanned plane can execute tunnel survey task.

This invention proposes a piezoelectric fan, comprising: a blade assembly connected to a heat source, the blade assembly including a liquid-cooled heat dissipation module formed in a stacked structure, the blade assembly having a fixed region and a swinging region, the fixed region being fixed and the swinging region being suspended and capable of reciprocating swinging; and a piezoelectric actuation unit connected to the blade assembly, the piezoelectric actuation unit providing power for the swinging of the swinging region. According to the piezoelectric fan of this invention, the heat from the heat source can be quickly and evenly distributed onto the blade assembly. Simultaneously, the piezoelectric actuation unit vibrates under external periodic electrical signal excitation, driving the swinging region to reciprocate, thereby improving heat dissipation efficiency. Furthermore, the structure is more compact, occupies less space, and can adapt to the heat dissipation needs of confined spaces, thus solving the problems of large system size, low integration, complex structure, high manufacturing difficulty, and high cost in existing technologies.

This invention provides a bottom-electrode type multilayer ceramic capacitor that increases capacitance even in confined spaces. [Solution] The multilayer ceramic capacitor 10 comprises a laminate 12 having first and second surfaces 12a and 12b opposite to the lamination direction x, third and fourth surfaces 12c and 12d opposite to a first direction y perpendicular to the lamination direction, and fifth and sixth surfaces 12e and 12f opposite to a second direction perpendicular to the lamination direction and the first direction, first to third external electrodes 30a to 30c extending in the lamination direction of the fifth surface, a plurality of dielectric layers and internal electrode layers. The internal electrode layers include a first internal electrode layer 16a connected to the first external electrode and a second internal electrode layer 16b connected to the second and third external electrodes. The first internal electrode layer includes a first main part and a first lead portion projecting toward the first external electrode, and the second internal electrode layer includes a second main part and second and third lead portions projecting toward the second and third external electrodes, respectively.

The utility model relates to the technical field of waste gas collection cover plates, and discloses a waste gas collection cover plate for a horizontal-flow sedimentation tank, which comprises a main body frame, a front enclosure is paved on the front part of the main body frame, side enclosures are paved on the left side and the right side of the main body frame, and a top enclosure is paved on the top of the main body frame. A rear enclosure is laid on the back of the main body frame; and the mounting frame is connected to the upper portion of the front fence, a transparent PVC door plate is inserted into the through groove, and first electric telescopic rods are mounted on the two sides of the exterior of the mounting frame. According to the waste gas collection cover plate for the horizontal-flow sedimentation tank, the first electric telescopic rods drive the side face enclosures on the left side and the right side to be opened and closed, so that the cover plate can be opened, a transmission device of a mud scraper is exposed, personnel enter and exit for operation and equipment maintenance are facilitated, and damage to personnel caused by the collection cover plate in a closed and limited space is avoided; the investment cost of waste gas treatment facilities is reduced.

The present invention relates to an inhabitant-type food waste input device capable of reducing movement of food waste in an inhabitant, processing the food waste at any time, and minimizing the influence of vacuum pressure generated by external factors such as installation position and a food waste conveying facility when the food waste is metered, so that the food waste can be metered more accurately. And installation and maintenance are easy even in a narrow space. The present invention is characterized by comprising: a first pipe provided so as to communicate with the lower side of a feed port through which food waste is fed; and a plate-shaped flap meter which has a built-in weighing sensor, is provided inside the first pipe so as to be capable of rotating up and down about one end, is capable of receiving the food waste fed through the feeding port and measuring the weight by means of the weighing sensor when rotating upward to a horizontal state, and then is capable of rotating downward and measuring the weight by means of the weighing sensor when rotating upward to a horizontal state. The food waste falls down to the discharge port side; and the first motor is used for providing power so as to enable the turning plate meter to rotate.

The utility model relates to a toy moving device. A shooting toy comprises the toy moving device. On the toy moving device, the driving mechanism drives the moving seat to move relative to the shell and is matched with the guide piece to slide along the guide track, linear motion of a single driving source is converted into rotating motion of the connecting arm, the problem that the manufacturing cost is increased due to a traditional multi-driving-source structure is solved, and therefore balance of function expansion and cost control is achieved. Secondly, through the sliding fit between the guide piece and the guide track on the shell and the rotary connection structure of the connecting arm on the movable seat, the shielding / opening action of the trigger piece and the displacement of the movable seat form linkage, the problem of space occupation caused by an additional transmission mechanism is solved, and therefore the composite motion function is achieved in the limited space; therefore, while the compactness of the product is ensured, the trigger piece can move relative to the shell along with the movable seat on one hand, and can be shielded / opened by the rotating connecting arm on the other hand.

This invention discloses a tunnel segment damage repair device, comprising a base plate, clamping devices on both sides of the base plate, and a supporting excavation device on the upper side of the base plate. The supporting excavation device includes a support ring with stepped holes and anchor rods inside the stepped holes. A circular shaft is rotatably connected to the base plate, and the circular shaft is driven to rotate and move axially by a driving device. A disc is fixedly connected to the upper end of the circular shaft, and the disc has a slag discharge channel. A first blade is fixedly connected to the side wall of the slag discharge channel. A sliding groove is provided at the bottom of the disc, and a sliding plate is slidably connected within the sliding groove. A second blade is fixedly connected to the outer end of the sliding plate. A sliding block is slidably connected to the support ring, and a support rod is hinged between the sliding block and the sliding plate. This invention allows the support wheel to continue rolling onto a second arc block. Because the second arc block has the largest diameter, the outer contour of the second blade is the largest, exceeding the diameter of the segment rupture. This is suitable for excavation operations in confined spaces, facilitating the subsequent formation of stepped pouring blocks, and providing greater support strength than direct filling repair methods.

An adjustable seat system transformable from a first, bench seat orientation to a second, lay-flat bed orientation, to a third, raised bed orientation, to a lounge orientation there between. The system includes a seat, a seat back, a foot rest with a foot rest cushion, and a bed cushion stored behind the seat back when in the first, bench seat orientation. The foot rest can be independently raised and lowered as desired. When the bed cushion is moved from a stored position to a horizontal position, the seat, seat back, and foot rest elements are moved away from the bed cushion and can be oriented into a horizontal position to form the second, lay-flat bed orientation. A pair of adjustable seat systems can be deployed together and separately and autonomously controlled. The pair of adjustable seat systems can be moved apart and rotated to be oriented about an optional dinette.