1792 results about "Support point" patented technology

The invention relates to the technical field of bionics, in particular to a bionic crawling device which comprises a support, a driving unit and at least one pair of crawling mechanisms, and each pair of crawling mechanisms comprises two space crank structures; a phase difference exists between actions of the two space crank structures, and the tail ends of the outer sides of the two space crank structures are located at low positions in turn to bear the support; the space crank structure comprises an inner crank, a first fulcrum and an outer crank which are sequentially connected, the driving unit is used for driving the inner crank to do conical motion, the first fulcrum is rotationally connected to the support, the inner crank is arranged in the support in a translational motion mode, and the outer crank is arranged outside the support in a translational motion mode. Each pair of crawling mechanisms can be driven to act through one driving unit, the number of driving sources is small, the production and manufacturing cost is low, the space crank structure is good in working stability and small in occupied space, use of connecting rods and exposure of unnecessary parts are reduced, the bionic crawling device can be made more refined, and the service life of the bionic crawling device is prolonged. During crawling, the fluctuation range is small, and the crawling stability is good.

The invention discloses a rollover risk prediction method for an operation machine, and the method comprises the steps: determining target attitude information corresponding to the operation machine and a target rotation angle of the operation machine around a first rollover line under the condition that the operation machine is in a bucket supporting condition, the target posture information is used for representing the supporting posture of the operation machine under the bucket supporting working condition, and the first tip-over line is a connecting line between supporting points of the operation machine under the bucket supporting working condition; determining a target stability parameter corresponding to the operation machine based on the target attitude information, the target rotation angle and a preset mapping relation; the mapping relation is used for representing the relation among the rotation angle, the attitude information and the stability parameter of the operation machine; and determining the tipping risk of the operation machine according to the stability parameter. According to the invention, the tipping risk of the operation machine can be accurately determined.

The invention belongs to the technical field of bridge construction, and particularly relates to a single-point multiple-jack synchronous beam falling forced displacement method prestress applying method which comprises the steps that S1, a plurality of temporary supporting points are arranged beside a permanent support, and a self-locking type beam bearing mechanism is installed on each temporary supporting point; meanwhile, a hydraulic jack is arranged at each temporary supporting point, the multiple hydraulic jacks are connected to a PLC integrated hydraulic synchronous control system through hydraulic pipelines, and synchronous linkage mechanisms are arranged among the multiple hydraulic jacks. According to the single-point multiple-jack synchronous beam falling forced displacement method prestress applying method, when an inner jacking pipe sleeve pushes a supporting cushion block to ascend and descend, through meshing of a self-locking gear and two self-locking racks, a secondary telescopic block can be forcibly driven to move synchronously, so that continuous stretching and retracting of a bearing beam are achieved, the cushion block does not need to be manually replaced after single beam falling, and the working efficiency is improved. The system automatically adjusts the height to meet the multi-stroke circulating beam falling requirement, and the construction efficiency is improved.

The utility model provides an auxiliary device for hanging a long-distance cable. The auxiliary device comprises a rope which is fixedly connected between a fixed point I and a fixed point II, at least one auxiliary support which is supported at a fixed point III in the middle section of the rope, and a plurality of hooks which are hung on the rope and are used for hanging the cable, wherein an elastic pulley block is arranged between the hook and the rope, a shell of the elastic pulley block is a C-shaped frame with an open groove, and the open groove allows the elastic pulley block to smoothly pass through the joint of the auxiliary support and the rope in the process of sliding along the rope. And meanwhile, the supporting point does not hinder the hook to move back and forth along the rope.

The invention belongs to the technical field of spraying devices, and particularly relates to the technical field of coating spraying devices for controlling spraying areas, in particular to a spraying device for an automobile trim panel and a spraying process of the spraying device. The device comprises an operation table, at least one spraying box is arranged on the upper end face of the operation table, and a sprayer is arranged in the spraying box; the conveying chain is provided with a plurality of loading tables, and matched gears are mounted on the loading tables; the rotating chain is arranged in the spraying box; a vertical rod is arranged on the loading table in the height direction; a plurality of lifting columns are uniformly arranged in the circumferential direction of the vertical rod; a plurality of push rods are evenly arranged in the matching gear in the circumferential direction, and the outer side ends of the push rods protrude out of the tooth root of the matching gear in the radial direction. By arranging the push rod and the lifting column, the workpiece can be lifted through the lifting column to spray the edge of the bottom of the workpiece while the push rod and the lifting column are matched with the gear to rotate, different supporting points are switched by switching different lifting columns, and it is ensured that the contact part of each lifting column can also be fully sprayed with paint after the workpiece is pushed by the lifting columns.

The invention relates to the technical field of building material detection, in particular to a building material hardness detection device which comprises a detection box, a supporting assembly is arranged in the detection box and comprises two sliding supporting seats arranged on the bottom face in the detection box, and a lifting supporting seat is arranged between the two sliding supporting seats. And a test pressure head is arranged above the lifting support seat. The first motor drives the two-way screw rod to adjust the distance between the two sliding supporting seats, so that the device can flexibly adapt to building materials with different lengths, the distance between the two supporting points is adjustable, the detection process can strictly follow domestic and foreign standards, and when the hydraulic cylinder drives the testing pressure head to apply pressure to the materials, the detection precision is greatly improved. And a connecting rod fixed on the rear side of the test pressure head pushes a linkage frame to slide downwards along a third limiting rod, so that the whole lifting support seat is driven to move downwards synchronously and is separated from the bottom surface of the material, a three-point support mode is automatically converted into a two-point support mode, and the accuracy of detection data is improved.

The invention relates to an intelligent embroidering path optimization and execution method and system for net cap embroidering in the technical field of intelligent manufacturing, and the method comprises the steps: obtaining a supporting point coordinate from a high-curvature region, employing finite element analysis to simulate a material deformation behavior, obtaining a deformation prediction matrix, and determining the tension distribution of a flexible structure; a supporting path plan is generated and used for deployment of the fixing device; real-time compensation parameters are generated in combination with the curved surface geometric model, material displacement is monitored in the embroidering process through a feedback control mechanism, and a displacement compensation vector is obtained and used for real-time correction of the stitch direction; according to the contact stability after angle deviation data processing, a final embroidery execution sequence is generated, a synchronous driving algorithm is adopted to coordinate the movement of the fixing device and the embroidery machine, and continuous stitch output is obtained to determine that the pattern precision meets the requirement; and obtaining production log data from continuous stitch output, evaluating an overall efficiency index by adopting a data analysis method, and obtaining an optimized feedback cycle for processing and adjusting a next curved surface structure.

The utility model provides a paint spraying tool which comprises a fixing support and at least three vertical supporting pieces, the vertical supporting pieces extend in the vertical direction, the bottom ends of the vertical supporting pieces are movably connected with the fixing support, and the horizontal positions of the vertical supporting pieces relative to the fixing support are adjustable. According to the paint spraying tool, the bottom ends of the vertical supporting pieces are movably connected with the fixing support, and the horizontal positions of the vertical supporting pieces relative to the fixing support are adjustable, so that the positions of the top ends of the vertical supporting pieces can be changed relatively, and the vertical supporting pieces can be flexibly adjusted according to the positions of supporting points at the bottom of a workpiece; according to the paint spraying tool, the positions of the multiple insertion connection structures of the paint spraying tool can meet the positioning requirements of different workpieces, the universality of the paint spraying tool is improved, the number of tools needing to be configured by a production line is reduced, and then the manpower, material and storage cost needed by the paint spraying tool is reduced.

The invention relates to the technical field of motor shaft turning, and discloses a motor shaft production turning device which comprises a machine base, a machine shell is installed on the machine base, a turning assembly used for turning a motor shaft is arranged on the machine base, and a guide rail block is fixedly connected to the top inner wall of the machine shell. The control assembly drives the two moving arms to be matched with the conical clamping heads to be clamped in prefabricated holes in the two ends of the motor shaft, centering clamping is achieved, then the stabilizing devices on the two moving arms can achieve multi-position self-adaptive clamping and supporting of different positions of the motor shaft, center clamping is achieved when the two ends are turned, and two-end clamping is achieved when the center is turned. A machining area avoids a supporting point, rotation of the motor shaft and radial run-out in the turning process can be effectively limited, it is guaranteed that the motor shaft is machined in place at a time in the turning process, time loss and errors caused by multiple times of clamping are reduced, the machining efficiency is remarkably improved, and meanwhile the machining cost is reduced. And the dimensional precision and the coaxiality consistency of all the machining parts of the motor shaft are guaranteed.

The utility model discloses an inclined column template support frame for cast-in-place of a concrete beam, which is characterized in that a vertical steel pipe upright post and an inclined steel pipe upright post are fixedly arranged on a bearing platform by utilizing bearing platform anchor bolts, and the vertical steel pipe upright post and the inclined steel pipe upright post are pulled into a whole by a horizontal pull rod along the direction of a bridge; the inclined steel pipe stand columns at the corresponding positions in the single span are connected into a whole through corner connectors and horizontal cross rods. The unloading blocks are arranged on the top faces of the vertical steel pipe stand columns and the top faces of the corner connectors respectively. A bearing beam is placed on the top face of the unloading block in the transverse bridge direction, a bailey beam is arranged on the top face of the bearing beam in the bridge direction, a distribution beam is placed on the top face of the bailey beam in the transverse bridge direction, and the batter post formwork supporting frame for concrete beam cast-in-place is formed. The bearing platform is fully used as a supporting point, the inclined steel pipe stand columns are arranged to share the upper load, a strip-shaped foundation does not need to be additionally arranged, construction cost is saved, the spanning capacity of the support is greatly improved, and the support is a preferable scheme for spanning rivers, roads and bridge sites in a large-span mode when the geological environment is poor.

The invention relates to the technical field of bridge construction, in particular to a hybrid beam cable-stayed bridge side span concrete main beam cast-in-place support and a dismantling construction method thereof, and the cast-in-place support comprises a side main beam supporting frame, a top plate supporting frame and a distribution structure; the distribution structure comprises a plurality of bearing main beams and a plurality of distribution beams; the plurality of sand cylinders are used for supporting the bearing main beam; the bailey beams are arranged between the bearing main beams and the distribution beams at intervals; the distribution beams support the side girder pouring formwork and the top plate supporting frame, and the top plate supporting frame supports the top plate pouring formwork. Through a multi-stage load distribution structure of the bearing main beam, the distribution beams and the sand cylinders, load distribution of supporting points is optimized, the overall stability of the support is improved, the bailey beams effectively disperse loads through a stress mechanism of trusses of the bailey beams, a rigid connection system is formed by the bailey beams and the bearing main beam, and the overall section flexural rigidity of a bearing component is improved; the method can ensure that the supporting system keeps a stable geometrical shape in the construction process.

The invention discloses a control system based on a GPS (Global Positioning System) and a center pivot type sprinkling irrigation machine land angle arm. The control system comprises a center pivot tower and a rotating pivot fixed at the center of an irrigation plot; the central pivot type sprinkling machine serves as a main span body, and the starting end of the central pivot type sprinkling machine is connected with the central pivot tower; the land angle arm straddle body is mounted at the tail end of the central pivot type sprinkling machine; the landing angle arm controller comprises a GPS positioning system and a wheel control system, and the wheel control system calculates and detects the wheel angle in real time according to the wheel zero position; the base station provides position information for the anchor arm controller; the wireless communication LoRa module is used for sending the position information of the base station to a foot margin arm controller through the wireless communication LoRa module and providing a centimeter-level high-precision positioning information differential source for a GPS (Global Positioning System); and the screen module is used for displaying the running state and track information of the anchor arm in real time, setting parameters of the anchor arm and alarming fault information. The method is convenient to operate, can plan the track of the anchor arm, avoids obstacles in track planning, and realizes good operation driving.

The invention relates to a frame of a three-wheeled bicycle, comprising a main frame (1) with a headset (2) for the pivotable mounting of a front fork (3), a rear swingarm (5) pivotably mounted on the main frame (1) at a pivot point (4), in which a two-track arrangement of rear wheels (53, 54) is mounted, wherein the rear swingarm (5) is pivotable in a plane that runs parallel to the longitudinal axis (L1) of the bicycle defined by the longitudinal extension of the main frame (1), and a coupling element (6) supporting the main frame (1) against the rear swingarm (5), wherein the coupling element (6) is pivotally connected to the main frame (1) at a first distal support point (7) and pivotally connected to the rear swingarm (5) at a second distal support point (8) opposite to this. The driving dynamics should be improved and adaptable to the individual needs of the users.Furthermore, getting in and out of the bicycle should be made easier and more comfortable for the user, as well as facilitating the transport, movement, and storage of the bicycle when not in use. According to the invention, this is achieved by making the longitudinal extension of the coupling element (6) between the two distal support points (7, 8) variable.

The aspects of the disclosed embodiments relate to a system for transferring a crawler chassis work machine, wherein the system includesan articulated frame steered transfer vehicle with a tow point, at least one dump hinge implemented with a transverse pivot shaft, a dump bed articulated with thee dump hinge, and a support point placed at a distance below the dump hinge,a low trailer with a platform for supporting the work machine on the low trailer during transfer, and a drawbar for fastening the low trailer pivotally to the tow point for towing the low trailer with the transfer vehicle,a draw arrangement supported to the pivot shaft and the support point non-rotatably with a torque arm included in the draw arrangement, wherein the draw arrangement includes a draw element for connecting the low trailer to the transfer vehicle with the draw arrangement.

The invention belongs to the technical field of cranes, and discloses a stable feeding device for building construction, the stable feeding device comprises a crane body, the bottom end of the crane body is provided with a vehicle bottom groove, the two sides of the top end of the vehicle bottom groove are both provided with first supporting parts, and the first supporting parts are each provided with a second supporting part; deep anchor points are formed through the conical head and the ground pressure plate, first-level anchoring is formed, deflection-free downward moving positioning can be carried out for different stratums, high-strength supporting operation is achieved, the multiple sets of supporting shaft columns are adaptive to concave-convex ground through the abutting plate, multiple supporting points are expanded, second-level assistance is achieved, the number of the supporting points is increased, and the supporting area is expanded. A more stable mechanical structure is formed, lateral torque and sudden load impact can be effectively resisted, the probability of occurrence of overturning accidents is reduced, the stable state of the crane body during hoisting and feeding of building materials is guaranteed, the supporting shaft column is in linkage with the hollow ring through the supporting shaft rod, the field angle is automatically adjusted along with the anchoring depth, and load distribution is optimized.

This application relates to the technical field of fully automated water surface robots, and provides a performance unmanned boat, including a hull; a mounting frame fixed to the hull; a screen fixed to the mounting frame and located on the top side of the hull, the screen having a ventilation structure; and a float fixed to the hull and located on the side of the hull. The performance unmanned boat provided by this application uses a screen with a ventilation structure and a float in conjunction with the hull. The ventilation structure reduces the screen's resistance to natural wind flow, reducing the external force exerted on the screen by natural wind. Simultaneously, the float increases the hull's support points on the water surface, enhancing the hull's resistance to wind and waves. This effectively solves the technical problem of unmanned boats carrying large screens easily capsizing when navigating on water, improving the stability of the performance unmanned boat on water, ensuring the smooth completion of performance tasks, and enabling the performance unmanned boat to meet the requirements of cultural and publicity purposes.

The utility model discloses a reinforced double-layer buffering angle bead, and relates to the technical field of packaging products. Comprising a corner protector body, the corner protector body comprises an inner side wall, an outer side wall and a cavity formed between the inner side wall and the outer side wall, the inner side wall and the outer side wall are each provided with a plurality of criss-cross grooves, the grooves are segmented and obliquely deepened towards the cavity in an arch arc shape, and the intersection point of every two adjacent grooves is deepest sunken. And the intersection points of the grooves in the inner side wall and the outer side wall correspond to each other and are mutually connected to form supporting points. The plurality of arch-shaped grooves are connected together in the cavity to form a framework-like structure, a gap space can be formed to meet the requirement that gas can smoothly flow in the material pipe in the blow molding process, and the wall surfaces of the inner side wall and the outer side wall can be supported by a plurality of supporting points, so that the wall surfaces can be prevented from collapsing, and the service life of the material pipe is prolonged. The whole large-area wall surface is divided into a plurality of buffer units by the grooves, so that the strength of the wall surface is greatly improved.

The invention relates to the technical field of derricks, and particularly discloses a steel rope type derrick rotation supporting mechanism with an overturn-preventing function, which comprises a safety ring, the top of the safety ring is fixedly connected with a rotation upper seat, so that when the rotation upper seat deflects, the safety ring abuts against the bottom of a rotation lower seat, and an overturn-preventing mechanism is arranged at the bottom of the safety ring. Deflection force acts on the fixed derrick section at the bottom of the lower rotary seat through the anti-overturning mechanism, so that the number of supported points of the rotary support, the upper rotary seat and the like after deflection is increased, a safety ring, the upper rotary seat and the like are supported through multiple positions, and the anti-overturning capacity of the rotary derrick section, a suspension arm and the like is improved. Besides, most of other structures, except for the mounting sleeve, of the anti-overturning mechanism are integrated on the anti-overturning rod, the anti-overturning mechanism can be conveniently and integrally disassembled and assembled, a worker can conveniently maintain, replace and the like the anti-overturning mechanism at high altitude, and anti-overturning use is not affected.

The invention provides a machining tool for fixing a rotor room, and relates to the technical field of machine tool machining, the machining tool comprises a base, a supporting part and clamping parts, the supporting part is used for supporting the bottom of the rotor room, the multiple clamping parts are arranged at equal intervals in the circumferential direction of a preset axis, and the axis of the rotor room coincides with the preset axis; the clamping part comprises a support and two clamping plates, the clamping plates are made of elastic materials, the support is provided with a moving part and a middle part which are connected with the clamping plates, the two clamping plates are arranged on the inner side and the outer side of the side wall of the rotor room respectively, and the moving part enables the two clamping plates to be close to each other in the radial direction of the rotor room and abut against the side wall of the rotor room. And meanwhile, the middle part enables the clamping plates to generate deformation attached to the side wall of the rotor room so as to fully clamp the side wall of the rotor room in the radial direction, the supporting area of the clamping plates to the rotor room is large, the multiple clamping parts enable supporting points to be reasonably distributed, the local bearing pressure of the rotor room is reduced, elastic deformation or plastic distortion of the rotor room is reduced, and therefore the machining precision is guaranteed.

The invention discloses an automatic leveling machine structure of a 3D printer and the 3D printer. The automatic leveling machine structure of the 3D printer comprises a fixed base, a printing platform, three leveling driving units evenly distributed on the circumference, a distance measuring sensor and a controller. The leveling driving unit is of a wedge-shaped transmission structure, a lead screw is driven through a leveling motor, a horizontal wedge block is driven to move, and then a vertical wedge block and a supporting table are pushed to ascend and descend precisely. The supporting table is connected with the printing platform through the spherical hinge assembly, the driving shell is rotatably arranged on the fixed base, and the design can adaptively eliminate internal stress in the leveling process. The distance measuring sensor moves along with the printing head to measure height data of a plurality of points of the platform; and the controller fits a platform plane by using a least square method, calculates the adjustment amount of each supporting point, and drives the leveling motor to complete automatic leveling. The problems that an existing leveling technology is low in precision and prone to clamping stagnation, internal stress exists and the like are solved, and high-precision and high-reliability automatic leveling is achieved.

The invention provides a magnetic suspension platform deformation monitoring system and method, and the system comprises Hall sensor arrays which are uniformly disposed at the edge and supporting points of a magnetic suspension motion platform, and are used for detecting the magnetic field intensity of the position where the magnetic suspension motion platform is located, and generating an original analog signal; the signal processing module is connected with the Hall sensor array, performs filtering, amplification and analog-to-digital conversion on the original analog signal, and outputs digital magnetic field data; the data analysis unit is connected with the signal processing module to receive the digital magnetic field data, and magnetic field intensity change is converted into deformation quantity of the magnetic suspension platform through a preset algorithm model; and the feedback control unit is connected with the data analysis unit and a control system of the magnetic suspension motion platform, generates a control instruction according to the deformation quantity, and adjusts the electromagnetic force of the magnetic suspension motion platform to correct the pose. Deformation of the magnetic suspension platform can be accurately monitored in real time, the pose can be corrected in time, and stable operation of the magnetic suspension platform is guaranteed.

The utility model provides a double-roller file. Comprising a file, a file support, a grip connecting column, a file fixing screw, a spring, a spring fixing screw, a penetrating shaft and a roller. The file support is connected with the head end of the file and used for containing the head end of the file. The file fixing screw is used for locking and fixing the file on the file bracket; the grip connecting column is arranged on the upper portion of the file support and used for being connected with the grip to form a grip point at the head end of the file, and the grip point and a grip point of a file handle at the tail end of the file jointly act on the file to form two-point grip. The idler wheel is arranged on the lower portion of the file support, and nylon double wheels are arranged on the idler wheel and used for forming a rolling supporting point at the head end of the file. The penetrating shaft is used for connecting the roller to the file bracket; the spring is arranged between the file support and the roller and used for adjusting the downward pressing angle of the file and the roller, and the spring and the roller are matched to adjust the movement track of the file. And the spring fixing screw is used for sleeving the spring. The file is suitable for being used as a file.

The utility model provides a weighing, butting and jacking device applied to non-standard equipment, which comprises a first positioning pin group, a second positioning pin group, a first pushing cylinder and a second pushing cylinder, the first positioning pin group and the second positioning pin group can be butted and positioned with a tray, and the first pushing cylinder and the second pushing cylinder are used for horizontally pushing. The second mounting plate is connected with a jacking cylinder capable of driving the second mounting plate to move up and down; a base on the lower portion of the supporting plate is fixedly connected to the upper portion of a weighing scale, and the weighing scale is connected with a weighing butt-joint air cylinder pushing the weighing scale to ascend and descend. The front ends of the first and second pushing cylinders are respectively connected with first and second supporting slide blocks; after the weighing scale is pushed and lifted to a set position, the two supporting sliding blocks are respectively pushed to the lower part of the weighing scale under the driving of the first pushing air cylinder and the second pushing air cylinder, the two supporting sliding blocks jointly form a supporting structure for supporting the weighing scale and a bearing object at the upper part of the weighing scale, and the supporting structure is provided with at least three supporting point positions; the plate surface of the second mounting plate is provided with a receding hole facilitating receding of the supporting plate when the supporting plate moves up and down along the vertical position.

The invention provides a wind power tower tube door frame welding supporting and hoisting device which comprises a fixing seat, a supporting seat and a tower tube, a supporting assembly is movably installed between the fixing seat and the supporting seat and comprises a supporting rod, a fixing groove is formed in the supporting rod, a fixing column is movably installed in the fixing groove, and the tower tube is arranged in the fixing column. A rotating pipe is movably installed between the fixing columns, a threaded column is movably installed on the rotating pipe, an open hole is formed in the threaded column, and the rotating pipe is movably installed in the open hole. Multi-point limiting and fixing between the fixing base and the supporting base are achieved through cooperation of the fixing frame and the supporting frame, the use state of the supporting frame is adjusted in the later period, the supporting frame rotates through the connecting hanging lugs, after the supporting frame rotates, the protruding block moves to one end of the fixing base or the supporting base, and the protruding block provides a supporting point for the portion between the fixing base and the tower barrel; and the tower drum and one side of the fixing base can be quickly aligned and limited through positioning of the protruding blocks, and quick welding between the fixing base and the tower drum in the later period is facilitated.

The invention belongs to the technical field of robots, and discloses a ship and bridge dual-purpose cleaning robot and a cleaning control method. The main body structure comprises a resistance reduction-propulsion integrated power system jointly formed by a fairing and a vector nozzle, a grading collaborative cleaning module jointly formed by a cavitation water jet module and a grinding cleaning module, an adsorption system and an auxiliary supporting module, and the auxiliary supporting module comprises a plurality of auxiliary supporting mechanical arms and is used for achieving the purpose of cleaning the water jet in a cleaning mode and an underwater swimming mode. By adjusting the position of a supporting point in real time, the device adapts to structural changes of ribs and bilges of a hull and is used for being matched with an adsorption system and a vector sprayer to form an alternate-cooperative dual-working mode, and different operations of vertical climbing and surface-changing movement are assisted to be completed. The device has multiple purposes, can continuously work on a ship body and a bridge pier, does not need to be modified or replaced by multiple machines, and reduces the comprehensive use cost. And meanwhile, multi-machine cooperation is supported, an efficient cluster cleaning mode is formed, and the operation efficiency and economical efficiency are further improved.

The utility model relates to the technical field of ALC wallboards, in particular to an ALC wallboard installation assembly, the upper end and the lower end of an ALC board are connected with wallboards, a plurality of second reserved openings are formed in the wallboards, the distance between the center lines of every two adjacent second reserved openings is equal to L2, and the distance between the center lines of every two adjacent second reserved openings is equal to L2. A ground anchor is fixed in the second reserved opening through a first pouring structure formed by concrete pouring, one part of the ground anchor is embedded in the first pouring structure, and the other part of the ground anchor is fixed in the first reserved opening of the ALC plate through a second pouring structure formed by concrete pouring. The anchor nails are poured and fixed on the ALC board or the wall board through concrete, fixation of the ALC board and the wall board is achieved, a plurality of reserved openings are formed, and supporting points of the ALC board are improved.

The invention relates to the technical field of machining, in particular to a heavy workpiece shaft part clamping tool with multi-stage buffering, which comprises a supporting plate and two clamping jaws, the two clamping jaws are used for clamping a main rod of a workpiece together, first supporting point positions are arranged at the positions, close to the middle parts, of the two clamping jaws, and a second supporting point position is arranged at the position, close to the middle parts, of the two clamping jaws. A second supporting point position is arranged between the first supporting point position and the rotating shaft; a limiting groove is formed in the supporting plate, the shaft rod is movably arranged in the limiting groove, and the two ends of the shaft rod are connected with hydraulic rods for providing hydraulic supporting force correspondingly; a buffering mechanism is arranged on the outer wall of the supporting plate, and the elastic movable end of the buffering mechanism abuts against the second supporting point position of the clamping jaw. Through cooperative work of the hydraulic rod and the buffer mechanism on the supporting plate, when a heavy workpiece falls down, the deceleration stop time of the heavy workpiece can be greatly prolonged, so that instant rigid impact is converted into a controllable buffer process, and permanent deformation or damage to a clamp structure caused by huge impact force is fundamentally avoided.

The invention discloses a BIM-based large-space pipeline installation method and system, and relates to pipeline installation: performing three-dimensional gridding processing on BIM model data, generating a gridding space model, and constructing a pipeline installation space; calculating the load per unit length of the pipeline according to the self weight of the pipeline and the weight of a medium in the pipeline in the physical parameters; a dynamic planning method is adopted for optimization arrangement of the supports and hangers; constructing a state transition equation according to the load per unit length of the pipeline and the structural mechanics continuous beam model; according to the state transition equation, an optimal decision sequence is obtained through reverse recursion solution, backtracking is conducted from the tail end of the pipeline to the starting point, in each decision stage, the position of a supporting point enabling accumulated deflection of all follow-up pipe sections to be minimum is selected, and a globally optimal supporting and hanging bracket arrangement sequence is generated; according to the globally optimal arrangement sequence of the supports and the hangers and the load per unit length of the pipeline, the deflection value of each pipe section is calculated; according to the method, the problem of non-uniform deflection distribution caused by a traditional local optimization method is avoided.

Detection of trailer dynamic parameters is provided. A vehicle can receive a geometry of a plurality of points of support disposed along a longitudinal axis of the trailer. The vehicle can determine a center of mass of the trailer based on the plurality of points of support and weights bearing down thereupon. The vehicle can bound or otherwise determine, based on the geometry of the plurality of points of support and the center of mass, a moment of inertia of the trailer about at least one of the plurality of points of support. The vehicle can perform a navigational action based on the moment of inertia or center of mass.