99 results about "Active support" patented technology

The invention discloses an anchor rod and grouting combined reinforcement control method for surrounding rock of an argillaceous weak cemented roadway, relates to the technical field of coal mine roadway support, and solves the problems of poor anchoring performance of an anchor rod, insufficient grouting pertinence and poor grouting and anchoring collaboration in the prior art. According to the technical scheme, the method comprises the steps that grouting and supporting parameter collaborative design is conducted; after roadway tunneling, full-section concrete spraying sealing is immediately carried out; deep and shallow hole step-by-step differential grouting is conducted, shallow hole low-pressure permeation is conducted firstly to form a shallow reinforcing ring, and then deep hole high-pressure splitting is conducted to form a deep reinforcing area; and finally, high-pretightening-force anchor rods (cables) are installed to form a cooperative bearing body. The reinforcing ring layer with the reasonable strength gradient is formed, efficient cooperation of surrounding rock modification and active supporting is achieved, and the supporting reliability and the overall stability of surrounding rock are remarkably improved.

The application discloses a kind of active support control method, device and medium of wind turbine, it is related to wind turbine active support control technical field, for the problem that current power grid voltage fault cannot identify power grid parameter, and then active support control effect is not good, provide a kind of active support control method of wind turbine.The voltage and current data of grid-connected point before and after power grid failure are collected to determine the parameter change of power grid before and after voltage failure.Furthermore, the short-circuit point position, short-circuit current and transition resistance value are identified, and the determination of all unknown quantities in the wind turbine grid-connected point voltage model after failure is realized.At this time, all parameters in the wind turbine grid-connected point voltage model after failure are known, the equivalent voltage and equivalent impedance of the power grid after failure can be determined, and the power grid parameter identification during failure is completed.Based on the identified power grid parameters during failure, the active and reactive output current optimal proportion of wind turbine can be redesigned, and better support for power grid voltage recovery effect is brought.

This application provides a tunnel boring machine (TBM) and its control method, relating to the field of engineering machinery technology. The TBM includes: a cutterhead; the cutterhead is disposed at one end of a shield; at least one advance support assembly is disposed within the shield, and the advance support assembly has multiple support members; the advance support assembly is configured to, depending on the surrounding rock condition in front of the cutterhead, selectively extend the multiple support members from within the shield to above the cutterhead to form a temporary support zone, or drive the support members to retract from above the cutterhead back into the shield. According to the embodiments of this application, active support for the surrounding rock above the cutterhead is achieved through the advance support assembly based on the surrounding rock condition, and the machine does not need to be stopped during support, enabling continuous and rapid traversal of deformable surrounding rock sections, thus improving the TBM's adaptability to complex terrain, tunneling capacity, and tunneling efficiency.

The invention relates to a Tripteron-type parallel manipulator configured to provide three purely translational degrees of freedom by means of three orthogonal linear actuators and their respective parallelogram-shaped kinematic chains. The system incorporates an auxiliary active support arranged on the Z-axis, intended to apply an upward vertical force to the moving platform (11) in order to reduce the load borne by the kinematic chain and the main Z-axis actuator. This support can be implemented using electric or pneumatic actuators, elastic elements, or cable-driven mechanisms, allowing for active, passive, or semi-active operating modes.The integration of the auxiliary support increases the manipulator's load capacity, improves its dynamic stability, and reduces the mechanical demands on the vertical actuator, while maintaining the purely translational kinematics and structural characteristics of the original Tripteron unchanged.

The utility model relates to the technical field of underground engineering, in particular to an underground engineering toughness supporting structure and underground engineering. The tough supporting structure for the underground engineering comprises a surrounding rock toughening layer which is grouted or sprayed on surrounding rock of the underground engineering in a rotary mode; the fiber sprayed concrete primary support layer is sprayed on the excavation contour surface of the underground engineering; the anchor rod or the anchor cable is driven to the surrounding rock of the underground engineering from the fiber sprayed concrete primary support layer; the telescopic arch frame is erected in the fiber sprayed concrete primary support layer; the buffer layer is laid or sprayed on the inner side of the fiber sprayed concrete primary support layer; and the self-repairing secondary lining layer is laid on the inner side of the buffer layer. A traditional passive supporting technology is changed, the toughness of the supporting structure is systematically improved in the mode of structural toughening, active supporting and graded deformation, and the whole structural system is better in deformation adaptability, higher in bearing capacity and higher in disaster resistance.

The invention belongs to the technical field of receiving-end power grid evaluation, and particularly relates to a receiving-end power grid active support capability evaluation method and system based on the total risk potential of a system, and the method comprises the steps: firstly constructing an active support capability evaluation index system of a receiving-end power grid; then calculating an individual risk potential function of each index and a coupling risk coefficient between each index and other indexes, and then calculating a system total risk potential based on the individual risk potential function and the coupling risk coefficient, the system total risk potential including a system individual risk potential and a system coupling risk potential; and finally, active support capability evaluation of the receiving-end power grid is realized based on the total risk potential of the system. According to the method, on one hand, a scientific and comprehensive evaluation system is constructed, the deep evaluation of the active support capability is realized, on the other hand, on the basis of quantifying the deviation degree by using the individual risk potential, the non-linear superposition risk additionally generated by the interaction or simultaneous degradation among multiple indexes is quantified through the coupling risk potential field, and the evaluation accuracy of the active support capability is improved. And the diagnosis precision is obviously improved.

The application relates to a new energy station active support control performance evaluation method, which comprises the following steps: determining a first index of a new energy station active support control performance index system configured with energy storage, and constructing a second index based on the first index; determining the weights of the first index and the second index, calculating a new energy station active support control performance value based on the weight values of the first index and the second index, and realizing new energy station active support control performance evaluation. The application can reflect the active support capability of the new energy station and has a high credibility.

The invention discloses a hybrid wind power plant frequency active supporting method, system, equipment, medium and product considering cooperation of a following network type fan and a construction network type fan, and relates to the field of wind power generation. The method comprises the steps that when the frequency deviation of a power grid exceeds a frequency deviation threshold value or the frequency change rate exceeds a frequency change rate threshold value, the frequency change rate of the power grid exceeds a frequency deviation threshold value; calculating the total required power support increment of the power grid; calculating the real-time supportable power capacity of the following-net type fan and the net-constructing type fan in the hybrid wind power plant; based on the total required power support increment and the real-time supportable power capacity, distributing a power support instruction by adopting a collaborative optimization principle; based on the power support instruction, generating a control instruction of the following net type fan and the construction net type fan; and the output power of the following net type fan and the construction net type fan is adjusted based on the control instruction, and frequency support is provided. According to the method, the active frequency support requirement of the wind power plant mixed with the following / constructing network type fans can be met, the following / constructing network type fans are enabled to synergistically exert respective advantages, and the optimal frequency support is realized.

The invention discloses an active support control method and device for a grid-connected system containing a virtual synchronous machine. The method comprises the following steps: acquiring a grid-connected point voltage amplitude of each virtual synchronous generator in a grid-connected system and reactive power injected into the grid-connected system based on a wide-area measurement system; performing preliminary support control on the grid-connected system according to the grid-connected point voltage amplitude and reactive power of each virtual synchronous generator and a preset stability criterion set; determining a key branch of the grid-connected system after the grid-connected system is subjected to preliminary support control; and judging whether the branch parameters of the key branch meet a preset key branch criterion or not, if so, proving that the grid-connected system is recovered to be stable, otherwise, searching a minimum cut set range containing the key branch, and taking an active splitting measure on the branch in the minimum cut set range.

This invention discloses a robot and method for installing spacer bars. The spacer bar installation robot includes a frame and a walking mechanism, a storage mechanism, a transfer mechanism, and a clamping mechanism mounted on the frame. The storage mechanism includes symmetrically arranged support rods and extension rods, with an anti-detachment block at the rear end of the extension rods. The transfer mechanism includes a receiving mechanism, a pushing mechanism, and a moving mechanism; the receiving mechanism has a vertical linearity module, a receiving platform, and a receiving rod. When the receiving rod rises to the same height as the support rod, it is aligned with the extension rod, supporting the movable and fixed buckles of the spacer bar respectively. The pushing mechanism pushes the spacer bar from the support rod to the receiving rod, the receiving rod descends to the height of the conductor, the moving mechanism pushes the spacer bar to the installation position, and the clamping mechanism closes the latch. This invention, through active support and precise transfer throughout the process, avoids attitude deviation caused by gravity falling, thus improving the accuracy and success rate of spacer bar installation.

The invention discloses a lighting lamp with unfoldable supporting legs. The lighting lamp comprises a lamp body, trundle assemblies and supporting leg assemblies. The lamp body comprises a control seat body, a lifting push-pull rod and a luminous body; the lifting push-pull rod is erected on the control seat body, the luminous body is arranged on the lifting push-pull rod, and the luminous body realizes lifting motion based on the lifting push-pull rod; the trundle assembly and the supporting leg assembly are arranged at the bottom of the control seat body; the supporting leg assembly comprises a driving supporting leg and a driven supporting leg, a containing groove is formed in the bottom of the control base body, and the driving supporting leg and the driven supporting leg can be contained in the containing groove and can be unfolded out of the containing groove based on split type rotation. According to the illumination lamp, on one hand, a worker does not need to bend down to conduct manual operation to achieve unfolding or storage of the supporting legs, on the other hand, in the storage process of the supporting legs, the worker can be effectively guided, the worker can rapidly judge the correct storage sequence, and therefore the supporting legs are rapidly stored.

The present application relates to the field of rehabilitation equipment. The purpose is to provide a traction system for orthopedic rehabilitation, comprising a lying plate, the middle part of the lying plate is provided with a concave mounting cavity, the mounting cavity is provided with a thigh support plate, the lying plate on both sides of the thigh support plate is respectively provided with a hip support area and a foot support area; the foot support area is provided with a moving plate which can move along the length direction of the lying plate under the drive of a drive mechanism, the moving plate is provided with a foot pedal for fixing the foot of a patient; the thigh support plate can swing obliquely upward around the center line of the plate shaft when the moving plate moves toward the hip support area to form support for the thigh of the patient. When the present application is used for knee joint rehabilitation traction of a patient, it can form active support for the thigh of the patient, guide the bending direction of the thigh and the calf, and reduce the impact on the knee joint.

The invention belongs to the related technical field of wind power plant dynamic configuration, and provides a wind power plant load shedding capacity dynamic configuration method and system, which comprehensively considers the maximum achievable load shedding capacity of overspeed control and the maximum supplementable load shedding capacity of pitch angle control, and carries out collaborative evaluation by taking the load shedding capacities of the two control modes as a whole. The active support potential of the wind power plant is maximized; according to the active supporting capacity result of the wind power plant, the required standby capacity is combined, the load shedding capacity of each unit and the rotating speed reference value and the pitch angle reference value of each unit are distributed in a differentiated mode, accurate execution of load shedding control is ensured, and the fan operation safety and the load shedding response timeliness are both considered.

The invention relates to a high-precision docking device for a multi-section aviation product, which is characterized in that movable holding assemblies are arranged on two sides of a reference section driving support assembly and two sides of a reference section driven support assembly, a driving support wheel and a driven support wheel are respectively arranged in the middle, movable front-section support sliding frames are arranged on two sides of a front docking section support assembly, and movable rear-section support sliding frames are arranged on two sides of a rear docking section support assembly. The two sides of the rear butt-joint section supporting assembly are provided with movable front-section supporting sliding frames, any front-section supporting sliding frame is provided with a front-section driving wheel, each front-section supporting sliding frame is provided with a third holding assembly, the two sides of the rear butt-joint section supporting assembly are provided with movable rear-section supporting sliding frames, and any rear-section supporting sliding frame is provided with a rear-section driving wheel for driving the rear butt-joint section to rotate. A fourth holding assembly is arranged on each rear-section supporting sliding frame, and the measuring assembly comprises a vision measuring device, an axis measuring device and a seam measuring device which can be adjusted in the radial direction of the base. According to the invention, automatic butt-joint assembly and automatic real-time detection of each section of the aviation product can be realized, and the assembly efficiency and the assembly quality are improved.

The invention discloses a grouping, zoning and staggered bidirectional continuous collaborative mining process for large and small stopes, and relates to the technical field of underground mining of metal ore deposits. The method comprises the following steps: S1, mining area division: dividing an ore body into a plurality of mining stages in the vertical direction, and dividing a plurality of stoping unit combinations along the trend of the ore body in two adjacent stages; wherein each stoping unit combination comprises a large stope located at the current stage and two small stopes located at the corresponding positions of the current stage and the upper stage correspondingly. According to the mining method, pillar-free safe and efficient mining is achieved, and the resource recovery rate is remarkably increased. Through the combination of the large stopes and the small stopes and the time-staggered cooperation sequence from bottom to top and from small to large, a high-strength filling supporting body is constructed in the vertical direction, continuous backward-return mining is achieved in the horizontal direction, and a two-way continuous operation mode is formed. The rock drilling chamber is dual-purpose, the mining and cutting work amount is greatly reduced, the ground pressure is effectively controlled through active supporting of the high-strength filling body, and deep mining safety is guaranteed.

The application provides a mine roadway surrounding rock loose circle automatic measuring device and a use method thereof, and particularly relates to the technical field of surrounding rock detection. The device comprises a control box, a crawling hydraulic cylinder, two sound wave bidirectional probes and two sets of supporting and stabilizing mechanisms. The supporting and stabilizing mechanism comprises a stabilizing platform and four hole wall supporting legs, the four hole wall supporting legs are arranged at equal intervals along the outer wall of the stabilizing platform and each is provided with a supporting hydraulic cylinder. Each hole wall supporting leg is hinged to the stabilizing platform through a passive supporting arm and an active supporting arm. The telescopic rod of the supporting hydraulic cylinder is rotationally connected to the active supporting arm of the corresponding hole wall supporting leg, and the active supporting arm is pushed or pulled back to realize the close adhesion or separation of the hole wall supporting leg and the inner wall of the test hole. The two stabilizing platforms are connected to the two sound wave bidirectional probes respectively on the side away from the crawling hydraulic cylinder. The application can automatically complete the measurement without manual operation, uses the sound wave bidirectional probe, repeatedly detects and takes the average value, and the result is more accurate.

The present application relates to the technical field of municipal underground passage construction, and particularly relates to a municipal underground passage construction method for passing under a railway, steps S1, measuring and lofting are performed on both sides of the railway to determine the position of the foundation pit, step S2, a support column is constructed on the retaining pile on the side of the foundation pit close to the railway foundation, a support beam is arranged below the railway, step S3, grooving is simultaneously performed on the side of the foundation pit close to the railway on both sides, after the grooving, the positioning beam and the guide beam are poured and positioned by taking the inner wall of the soil groove as a formwork, step S4, after the excavation reaches the corresponding pipe cover elevation above the to-be-excavated underground passage, a jacking device is installed, and the pipe cover is jacked after a insertion hole is drilled on the retaining pile; step S5, the two sides of the steel sheet pile are synchronously excavated by the excavation equipment, and the pipe cover on both sides and below the to-be-excavated underground passage is jacked according to the excavation progress; the support column and the support beam are arranged on both sides of the railway, forming an active support system for the railway foundation, and effectively controlling the settlement and deformation of the railway foundation.

The invention discloses an integrated hole protection and automatic interval charging device for blasting drilling. The integrated hole protection and automatic interval charging device comprises a positioning rod, a hole protection mechanism at the bottom of the positioning rod, an internal interval mechanism and an alignment mechanism at the top of the positioning rod. The hole protecting mechanism mainly comprises a center lead screw fixedly connected with the bottom of the positioning rod, a plurality of supporting pieces arranged in the annular direction and driving lantern rings symmetrically arranged at the two ends of the lead screw in a sleeving mode. By rotating the center lead screw, the lantern rings at the two ends are driven to move relatively in the axial direction, then the supporting pieces are driven to expand synchronously in the radial direction, the flexible net bag is tightly attached to the hole wall, and active supporting of the hole wall is achieved. The spacing mechanism is internally provided with an air bag and a trigger assembly, when charged powder reaches a set height, the spacing mechanism is pressed to start an air cylinder, air is automatically injected into the air bag to expand, and therefore an accurate and stable air gap is formed in a blast hole, and accurate non-coupling charging is achieved. The device has the functions of hole protection, collapse prevention and automatic spacing, the integrity of blasting drilling can be effectively guaranteed, the utilization efficiency of blasting energy is improved, and the crushing effect is controlled.

This invention provides a substrate handling apparatus. The substrate handling apparatus may include a fork-shaped structure having one or more support portions arranged to provide access to the back side of a substrate. The substrate handling apparatus may further include a first active support element and a second active support element configured to couple the substrate handling apparatus to the back side of the substrate. After being placed on the first and second active support elements, the substrate may be tilted or leaned to create at least one third passive contact point along the fork-shaped structure. Creating at least one third passive contact point improves the substrate handling and control capabilities for warped substrates.

The invention provides a network construction type active support control method and system suitable for flexible direct current. The system relates to the technical field of flexible direct current transmission, and comprises a support node module which is used for collecting and processing the operation state data of a power grid to generate real-time power grid data, and the collection and processing adopts a sensor; and the intelligent coordination module is used for performing coordination control on the plurality of support nodes to form a power grid global optimization control strategy, the coordination control is based on real-time power grid data, and the coordination control adopts an intelligent coordination algorithm. An intelligent coordination algorithm based on real-time power grid data and a network construction type active support control architecture are adopted, so that a plurality of support nodes cooperatively work under a unified global optimization target. Power distribution, voltage control and weight adjustment of each support node are completed in the same optimization framework, and a global optimization control strategy facing system power fluctuation and voltage deviation is formed.

The application provides a kind of easy weathering dilatant soft rock roadway surrounding rock stability control method, belongs to underground mine roadway surrounding rock control technical field.The method includes: in the surface of the surrounding rock of roadway full section spraying high molecular waterproof material, the water layer formed blocks water vapor into the surrounding rock;In the roadway setting hierarchical support structure, form shallow anchor rod reinforcement and deep anchor cable suspension mutual cooperation of active support layer;In the surface of the active support layer of roadway spray steel fiber reinforced concrete, to form the passive support layer coupled with active support layer;The bottom surface of roadway is excavated into arch wave surface, the plane corresponding to arch wave surface is arch plate surface, arch wave surface and arch plate surface are surrounded by anti-arch space, pouring rubble concrete in the anti-arch space, to form anti-arch structure in the bottom of roadway.The application can effectively control the deformation of surrounding rock instability, solve the waterproof failure of easy weathering dilatant soft rock roadway, support system mismatch and bottom heave out of control problem, realize easy weathering dilatant soft rock roadway long-term safety and stability.

This invention belongs to the field of tunnel and underground engineering structural safety testing technology, specifically relating to an indoor test bench and method for simulating rock mass unloading deformation and active-passive coordinated support in a tunnel model. The test bench includes a reaction bearing frame, multiple radial loading components arranged circumferentially along the reaction bearing frame, and a bottom support component. The radial loading components can independently set and maintain their loading displacement or equivalent load, and can perform zoned unloading / unloading and reloading according to a preset zone sequence to simulate the unloading deformation path and stress redistribution of the surrounding rock caused by tunnel excavation. This invention enables controllable indoor reproduction of the entire process of surrounding rock unloading path—active support sequence—passive lining failure, providing a test platform for support optimization.

The invention discloses an active supporting structure for a shallow-buried tunnel portal pipe shed, relates to the field of tunnels, and aims to improve the rigidity and stability of the supporting structure through active stress of the pipe shed. According to the technical scheme, the active supporting structure for the shallow-buried tunnel portal pipe shed comprises a guide wall at the portal, a supporting pipe is inserted into the guide wall, the front end of the supporting pipe is inserted into a soil body on the inner side of the guide wall, and the rear end of the supporting pipe is located on the outer side of the guide wall; at least one connecting hole is formed between the earth surface above the supporting pipe and the supporting pipe, an anchoring plate is arranged at the opening position of the connecting hole, a tie bar is arranged in the connecting hole, the upper end of the tie bar is connected to the anchoring plate, and the lower end of the tie bar is connected with the supporting pipe. The tie bars apply upward force to the supporting pipes before the tunnel portal is excavated, namely, the tie bars are of a prestressed structure and can offset part of soil mass load, deformation and sedimentation of the soil mass after the tunnel portal is excavated are reduced, and the risk that a primary support occupies a permanent structural plane is reduced.

This invention discloses an active support test method and apparatus for flexible DC transmission, addressing the current technical problem of lacking verification of the active support function of grid-connected flexible DC transmission for the power grid based on actual flexible DC transmission. The flexible DC transmission includes a grid-commutated converter, a grid-simulated MMC, and a tested MMC. The method involves controlling and unlocking the grid-commutated converter to perform uncontrolled charging on both the grid-simulated MMC and the tested MMC. Once the capacitor voltages of both the grid-simulated MMC and the tested MMC reach the stable uncontrolled charging voltage, a first unlocking control strategy is implemented on the grid-simulated MMC, while a second unlocking control strategy is implemented on the tested MMC. When a preset rated voltage condition is detected, the tested MMC is switched to grid-connected operation mode. When the tested MMC enters steady-state operation in grid-connected operation mode, the power support capability of the tested MMC is verified through the grid-simulated MMC, obtaining the active support test results of the flexible DC transmission.

This invention discloses a construction method for initial support of tunnels with unequal thickness and spacing, comprising the following steps: conducting advanced geological forecasting and designing shotcrete structures with unequal thickness and unequal spacing, as well as removing slag; installing the upper-step arch frame using an arch frame installation machine, while the middle and lower steps are manually erected and fixed using a self-advancing locking foot process; performing shotcrete operations using a wet-spraying robot, sealing the opening with quick-setting mortar, and proceeding with excavation; using prestressed anchor bolts for active support in the system, and pre-reinforcing the tunnel face; finally, constructing the invert arch, secondary lining, and cyclic excavation. This construction method for initial support of tunnels with unequal thickness and spacing significantly reduces the amount of concrete and steel reinforcement used while ensuring tunnel stability and safety, thereby reducing project costs and economic expenses.

The invention discloses a roadway roof separation early warning and active supporting linkage device, and relates to the technical field of supporting devices, the roadway roof separation early warning and active supporting linkage device comprises a bottom plate and a supporting plate, the supporting plate is located above the bottom plate, and height adjusting mechanisms are symmetrically arranged between the bottom plate and the supporting plate. According to the roadway roof separation early warning and active supporting linkage device, roadway roof separation data are collected in real time through the distance sensor, real-time processing and threshold value judgment of the data are achieved in combination with the intelligent control module, and when a roof is separated and the data exceed a preset threshold value, manual intervention is not needed; the intelligent control module can automatically control reversing of the magnetic poles of the electromagnets to complete limiting unlocking, the driving motor is synchronously triggered to be started, the power mechanism and the height adjusting mechanism push the supporting plate to move upwards to achieve active supporting till the distance between the top plates recovers to the preset fixed value, and closed-loop linkage without manual intervention is achieved in the whole process. And the response and support time of roof separation is greatly shortened.

The present application relates to the technical field of support, aiming at solving the problems of insufficient expandability, adjustability and movability of temporary cradles or supports in the prior art, and providing a multi-directional expandable movable support structure and a combination method thereof; the multi-directional expandable movable support structure comprises a support basic body, a support expansion body, a slotted bottom beam and a connecting beam, and the support basic body and the support expansion body each comprise a base and a stand column mounted on the base; the multi-directional expandable movable support structure is divided into a heavy support structure, a medium support structure and a light support structure; the heavy support structure is arranged side by side with the support basic body and the support expansion body, and the slotted bottom beam and the connecting beam are connected between the support basic body and the support expansion body; the medium support structure is arranged side by side or in parallel with the support basic body and the support expansion body; and the light support structure is supported by the support basic body and the support expansion body alone; the support structure of the present application can be used as a support alone or combined into a support, and has high versatility and high bearing capacity.

An object of the system according to the embodiment is to provide appropriate support to young people and students at an early stage.SOLUTION: A system includes an analysis part, a support part, a notification part, and a data cooperation part. The analysis unit analyzes an utterance or a search history of a user. The support unit provides active support based on the content detected by the analysis unit. The notification unit transmits an SOS notification to a counselor or an expert when it is difficult for the support unit to deal with the problem. The data cooperation unit acquires necessary data in cooperation with another data source.SELECTED DRAWING: Figure 1