688results about "Counterweights" patented technology

The invention discloses a wind generating set anti-inclination hoisting device which comprises a hoisting frame used for hoisting a generating set and a hoisting seat connected with a hoisting hook, balancing weights are slidably connected to the periphery of the hoisting frame, and the periphery of the hoisting frame is connected with the hoisting seat through a telescopic device; an inclination sensing device and a plurality of wind direction sensing devices are arranged on the hanging bracket; the inclination sensing device detects inclination of the hanging bracket and triggers the corresponding driving device to enable the balancing weight to move in the opposite direction. Each wind direction sensing device responds to wind in a preset direction range and triggers the corresponding telescopic device to stretch out and draw back so as to counteract hanging bracket inclination caused by the wind in the direction. The device can prevent inclination caused by self weight or wind power of the wind turbine generator.

The invention provides a hoisting method of a flare tower. The hoisting method comprises the following steps: calculating the total weight and the gravity center position of a flare tower assembly; according to the requirements of the lifting height and the preset inclination angle, a balance weight piece and a main lifting lug are additionally arranged on the flare tower, so that the included angle between the horizontal plane and the connecting line between the main lifting lug of the lifted flare tower and the gravity center of the flare tower assembly is within the preset inclination angle range; welding two connecting pieces and a positioning rod at the bottom of the flare tower; hoisting the flare tower in a horizontal mode to enable the flare tower to be separated from the supporting surface; inclining the flare tower to enable the included angle between the center line of the flare tower and the horizontal plane to be a preset inclination angle; the flare tower is lifted to a deck, and a positioning rod at the bottom of the flare tower gradually gets close to a limiting device arranged on the deck; slowly moving the flare tower until the positioning rod enters the limiting device so as to limit the rotation of the positioning rod; and rotating the flare tower to enable the flare tower to vertically stand on the deck, and welding the base of the flare tower and the deck.

The invention relates to the technical field of bridge construction, and discloses a guide-beam-free incremental launching construction hoisting balance weight structure for bridge construction, which comprises an incremental launching platform and a gantry crane above the incremental launching platform, the counterweight assembly comprises two slide rails, two wheel carriers, two groups of rollers, a base, a plurality of counterweight blocks, two groups of guide wheels and two pull ropes; and the lubricating assembly is used for lubricating the two groups of rollers. Through the arrangement of the counterweight assembly, the base can move reversely along with the movement of the gantry crane, self-adaptive position adjustment of the multiple counterweight blocks is achieved, the gantry crane and the multiple counterweight blocks are kept in a balanced state on the pushing platform, the bending moment and the shearing force peak value of the pushing platform are reduced, and through the self-adaptive position adjustment, the service life of the pushing platform is prolonged. And the operation of actively adjusting the position of the balancing weight by an operator is reduced, and the operation time is saved.

The utility model discloses an automobile suspension front cross beam mass block which comprises a suspension shaft body, a limiting ring is arranged on the side wall of the middle of the suspension shaft body, and a mass block assembly is fixedly installed on the outer side wall of the suspension shaft body. The mass block assembly comprises a fixed clamping mechanism, and a mass assembling assembly is arranged below the fixed clamping mechanism. Through the arrangement of the limiting ring and the fixed clamping mechanism, when the mass block assembly is assembled on the suspension shaft body, the fixed clamping mechanism and the limiting ring are matched for limiting to clamp and fix the suspension shaft body, the stability and compactness of installation are guaranteed, and assembly is convenient and firm; through the arranged mass assembling assembly, the balancing weight can be disassembled and assembled according to requirements to adjust the weight, the balancing weight is clamped in the middle, a stable installation environment is provided for the balancing weight, the gravity center of the mass is kept in the middle, and it is guaranteed that the gravity center of a vehicle body is stable.

The invention relates to the technical field of vehicle wind vibration resistance stabilization, and discloses a vehicle wind vibration resistance stabilization system based on liquid balance weight and damping dynamic optimization, which comprises a vehicle body, a liquid balance weight system, an active damping system, a sensor group and a controller, the liquid balance weight system comprises a liquid storage tank, a water conveying pipeline, a water pump and a plurality of balance weight liquid bags, the liquid storage tank is fixed to the bottom of the vehicle body, one end of the water conveying pipeline is fixedly arranged on a connecting port of the liquid storage tank, the other end of the water conveying pipeline is fixedly arranged on a connecting port of the balance weight liquid bag, and the water pump is fixedly arranged on the water conveying pipeline. The active damping system comprises a plurality of dampers. According to the invention, through the liquid counterweight system, the controller is used for controlling the operation of the water pump in real time, so that the problem that the gravity center of the vehicle shifts because the vehicle cannot adapt to the real-time wind load change because the wind vibration resistance of the existing vehicle mostly depends on a fixed counterweight block or a mechanical counterweight structure is improved.

The invention relates to the technical field of cordless curtains, and provides a driving structure of a cordless roller shutter, the cordless roller shutter and an adjusting method. The driving structure comprises a reel, a motor assembly, a volute spiral spring mechanism and a worm and gear mechanism. The motor assembly is used for driving the reel to rotate so as to drive the curtain cloth to ascend and descend, the volute spiral spring mechanism is used for generating hovering torque opposite to gravitational torque of the curtain cloth in the rotating process of the reel, and the worm and gear mechanism is used for adjusting pre-tightening torque of the volute spiral spring mechanism and forming one-way transmission locking, so that in the stroke range of the curtain cloth, the curtain cloth is driven to ascend and descend. The hovering torque of the volute spiral spring mechanism and the gravitational torque of the curtain cloth are kept balanced. The problems that in the prior art, operation is complex and time is consumed when the balance torque is adjusted are solved, and the applicability and convenience of a product are remarkably improved. And accidental sliding or springback of the curtain cloth can be restrained, and long-term stability of the pre-tightening torque and use safety of the roller shutter are guaranteed.

The invention discloses a surveying and mapping device for land space planning and a supporting assembly thereof, and relates to the technical field of land surveying and mapping, the surveying and mapping device comprises a base, a total station for surveying and mapping is mounted on the top surface of the base, a supporting disc is arranged on the bottom surface of the base, a fixing ring fixedly sleeves the outer circular wall surface of the supporting disc, and a connecting lining is fixedly mounted on the bottom surface of the supporting disc; a supporting seat is fixedly mounted on the bottom surface of the connecting bush; a balancing weight, a balancing weight seat, a supporting seat, a wind direction sensor, a wind speed sensor, a vibration sensor, a first driving motor, a supporting rod, a mounting plate, a first connecting rod, a first movable shaft, a second connecting rod, a second movable shaft, a movable rod, a third movable shaft, a supporting frame, a limiting block, a sliding groove and a sliding block are matched with one another; therefore, wind blowing can be resisted by utilizing the movement of the overall gravity center of the base and the total station, the situation that the total station shakes due to wind in the surveying and mapping process and consequently surveying and mapping data are not accurate is prevented, and the surveying and mapping accuracy of the total station is improved.

The utility model discloses a high-precision automobile engine balance weight which comprises a transmission ring, a bottom ring body, fixing columns, fixing holes, arc-shaped pieces, a counter weight frame, fixing pieces, adjusting notches, adjusting columns and adjusting blocks. The fixing holes are evenly formed in the top of the transmission ring, the fixing columns are connected into the fixing holes in a threaded fit mode, and the arc-shaped pieces are arranged on the arc-shaped pieces. The fixing columns are sleeved with through grooves evenly formed in the bottom ring body, and the bottom ring body is attached to the top of the transmission ring. During assembly, the fixing columns penetrate through the through grooves evenly formed in the bottom ring body and are connected into the fixing holes in the transmission ring in a matched mode, relative fixation of the transmission ring and the counter weight frame is achieved, the position of the counter weight structure relative to a transmission plane can be adjusted conveniently according to actual requirements, and the complex actual use requirements are met; the practicability of the balance block is improved; the centrifugal moment of the balance block can be adjusted by rotating the adjusting column under the condition that the rotating speed of the motor is not changed, and the universality of the balance block is improved.

The invention relates to the technical field of rotary mechanical vibration control, in particular to a quasi-zero stiffness annular superstructure device and a sea water pump composite vibration isolation system.The quasi-zero stiffness annular superstructure device comprises an inner ring and an outer ring, and the inner ring and the outer ring are connected through a plurality of quasi-zero stiffness one-dimensional structures; the quasi-zero stiffness one-dimensional structure is formed by sequentially arraying a plurality of groups of quasi-zero stiffness cell structures from top to bottom, a gap is formed between every two adjacent groups of quasi-zero stiffness cell structures, the left side and the right side of each gap are respectively provided with a group of cantilever beams, and the tail ends of the cantilever beams are respectively and fixedly provided with mass blocks with different masses so as to generate a local resonance band gap; piezoelectric patches are pasted on the inclined side wall of the quasi-zero-stiffness one-dimensional structure, a shunt circuit is connected, and a band gap is adjusted through the circuit. Compared with the prior art, multiple band gaps can be generated at low frequency on the basis that the bearing capacity is guaranteed, and low-frequency broadband vibration control over the rotating machine is achieved.

The invention belongs to the technical field of wind turbine generator operation and maintenance, and particularly relates to a wind turbine generator vibration detection device which comprises a base. A vibration detection unit including a vibration sensor; the energy collecting part comprises a multi-order cantilever beam array and an energy storage capacitor, and a piezoelectric plate is arranged on the multi-order cantilever beam array and used for converting mechanical vibration energy into electric energy; the rectifying part is used for converting the alternating current output by the piezoelectric plate into one-way current; through the integrated design of broadband energy harvesting, mechanical rectification and self-energized monitoring, full-scene vibration detection of key components of the wind turbine generator is realized, and the problems that an existing device is dependent on power supply, narrow in frequency band adaptation and poor in reliability in a severe environment are solved. Vibration detection, energy collection and rectification are highly coordinated in spatial layout, mechanical transmission and energy flow direction, and are physically isolated from a power supply circuit, so that the performance is improved, mutual interference is avoided, and real high-integration and high-reliability self-energized detection is realized.

The invention relates to the technical field of carts, in particular to a four-wheel quick-release large-base cart which comprises a transmission assembly, a gravity center compensation assembly and a direction reset mechanism. The transmission assembly is arranged in the supporting column. The gravity center compensation assembly is installed in the base in a sliding mode and connected with the transmission assembly. The direction resetting mechanism is connected with the universal wheel; when the bearing platform is rotated, a balancing weight in the gravity center compensation assembly is driven by the transmission assembly to slide reversely along the compensation sliding rail, so that gravity center shift caused by rotation of the bearing platform is counteracted; when the bearing platform is adjusted, the direction resetting mechanism enables the four universal wheels to slowly and automatically recover to the posture that the axes are parallel to the short sides of the base with the four universal wheels arranged in a rectangular shape; the problem that an existing four-wheel medical trolley overturns due to center-of-gravity shift when the angle of a bearing platform is adjusted is solved.

The invention relates to the field of elevators, and discloses an elevator operation dynamic balance regulation and control device which comprises an elevator shaft, an elevator machine room, an elevator car and a car frame for bearing the elevator car, the elevator machine room is located at the top of the elevator shaft, and a traction power system and a control cabinet for driving the elevator car and the car frame to ascend and descend are assembled in the elevator machine room; the load monitoring group is mounted at the bottom of the car; the counterweight adjusting structure is arranged at the top end of the lift car; the liquid adjustable balance weight structure is composed of a balance weight liquid containing box, a liquid containing tank and a liquid conveying hose, the balance weight liquid containing box is arranged at the top of the lift car through a balance weight adjusting structure, and the high-performance microprocessor is carried in a control cabinet and based on a PLC or an embedded system. According to the dynamic balance regulation and control device for elevator operation, the unstable phenomena such as shaking and inclination in the elevator operation process are effectively reduced through precise regulation and control, and the riding comfort is greatly improved.

The present invention discloses an on-line moisture detection device and its application, as well as a tobacco leaf moisture detection device. The on-line moisture detection device includes a floating bracket, a moisture detector, and a balancing mechanism. The moisture detector is installed on the floating bracket, and the floating bracket is installed directly above the raw material conveying device in the field of application. Its installation height can be set according to the lowest stacking height of the materials piled on the conveying device, so that the moisture detector can be in direct contact with the raw materials to detect the moisture content of the raw materials passing through the moisture detector. The balancing mechanism can balance the weights of the moisture detector and the floating bracket, so that the floating bracket can automatically float up and down with the stacking height of the raw materials on the conveying device, reducing the extrusion force of the floating bracket on the raw materials, making the raw materials on the conveying device in a natural and fluffy state, avoiding inaccurate measurement caused by the extrusion of the raw materials, achieving the purpose of eliminating the influence on the detection accuracy caused by inconsistent raw material stacking heights, and improving the moisture detection accuracy.

The utility model provides a novel integrated counterweight base and shell, which is formed by plastic uptake and comprises a base plate and a coaming which is positioned at the edge of the base plate and is bent towards the same side direction of the base plate, and electrostatic protection films are arranged on the outer surfaces of the base plate and the coaming; the filler is fixed in the shell and is bonded with the inner surface of the shell; the bottom layer is fixed on the surface of the exposed part of the filler, and the filler is wrapped by the bottom layer and the shell; according to the utility model, the design structure is reasonable, the counterweight base shell made of the traditional metal material or the plastic of the injection molding process is replaced by the plastic material of the plastic uptake process, the rapid molding through the plastic uptake process is facilitated, and meanwhile, the shell can be used as a mold, so that the internal filler is molded according to the appearance of the shell, and the shell has the characteristics of smooth surface and attractive appearance; and different patterns can be formed on the surface of the shell in a plane processing manner such as printing, so that the diversity of the product appearance is increased.

The invention is suitable for the technical field of shock insulation equipment, and provides a composite buffer type shock absorber which comprises an upper fixing seat, a lower fixing seat, an elastic shock insulation unit and a plurality of transverse limiting buffers, the elastic shock insulation unit is arranged between the upper fixing seat and the lower fixing seat, the two ends of the elastic shock insulation unit abut against the friction faces of the fixing seats through sliding friction blocks, and the transverse shock absorption function is provided through sliding friction energy consumption. The four transverse limiting buffers which are arranged in an annular array mode are connected with the upper fixing base and the lower fixing base, the transverse reset capacity is enhanced and the displacement amount is limited through the elastic stretching and retracting of buffer springs and the synergistic effect of damping liquid, and the friction blocks are prevented from being disengaged; the multi-directional vibration reduction performance is further optimized, the vertical vibration isolation function and the transverse limiting function are achieved, and the problem that due to too large transverse deviation of a traditional vibration reducer, an elastic unit is torn is effectively solved.

The invention relates to the technical field of trestle construction platforms, in particular to an offshore lamplight trestle construction platform which comprises a supporting column, a bridge floor is detachably installed at the upper end of the supporting column, limiting seats are fixedly connected to the upper end and the lower end of the supporting column, the outer surface of the supporting column is sleeved with a movable barrel, the outer surface of the supporting column is further sleeved with a balance weight ring, and the balance weight ring is located below the movable barrel. The outer surface of the movable cylinder is sleeved with an auxiliary ring, the outer surface of the auxiliary ring is rotationally provided with a plurality of extension rods, the outer surfaces of the extension rods are sleeved with floating belts, the floating belts can float above the sea level, the movable cylinder automatically ascends and descends along with the sea level under the buoyancy action of the floating belts, and the communication cylinder is kept in isobaric communication with an external water body. The water column pressure formed in the rising process of sea waves and tides can automatically drive the turbofan in the driving barrel to rotate, so that continuous mechanical energy output can be achieved without additional power, and then the cleaning ring is driven to circularly clean the outer surface of the supporting column.

The utility model discloses a movable workpiece defect scanning device, belongs to the technical field of industrial CT (Computed Tomography), and is used for solving the technical problem that industrial vertical scanning equipment is inconvenient to carry out outdoor detection on workpieces. The moving device comprises a moving carrier, a scanning device and a moving channel, the moving channel comprises a first channel and a second channel, the first channel and the second channel are detachably connected with the two ends of the scanning device respectively, each of the first channel and the second channel comprises a universal wheel and a workpiece conveying belt, and the scanning device comprises a rotating body and a rotating balance assembly. The workpiece defect scanning device disclosed by the utility model can be quickly moved and arranged indoors and outdoors, so that self-adaptive rotating balance is realized, and the scanning precision is improved.

The invention relates to a roller shutter structure. A roller shutter structure comprises a winding drum wound with curtain cloth, and a winding drum supporting piece, a torque assembly and an end supporting piece are arranged in the winding drum. The torque assembly enables the winding drum to bear torsion N; a force conversion part is arranged between the winding drum supporting piece and the end supporting piece, and the force conversion part can change the friction force F between the winding drum supporting piece and the end supporting piece by changing the pressure P in the axial direction; gravity G, torsion N and friction force F of the curtain cloth are simultaneously applied to the winding drum, N = G + / -F in the up-down movement process of the curtain cloth, and the curtain cloth is made to be static at any position without external force. The roller shutter structure can be installed by directly utilizing axial pressure, can adapt to installation of roller shutters with different widths and different fabrics, and is convenient to adjust and good in stability.

The invention relates to the technical field of stacking machines, in particular to an intelligent logistics automatic precise positioning stacking machine which comprises a lifting mechanism and a connecting base installed on the lifting mechanism, a telescopic pallet fork is fixedly installed on the connecting base, and a transmission assembly, a supporting assembly and a reset assembly are arranged on the telescopic pallet fork; the supporting assembly comprises a supporting rod capable of rotating with the center of the supporting assembly as a fulcrum and a balancing weight in sliding connection with the supporting rod, the supporting rod is pulled to rotate, supporting force is provided for the supporting rod from the bottom of a middle fork of the telescopic pallet fork, the risk of stress concentration is reduced, and meanwhile when the telescopic pallet fork shrinks and resets, the reset assembly drives the balancing weight to reset. When the telescopic pallet fork completely stretches out, the front fork body bears goods to form a cantilever beam structure, the bending moment of the joint of the front fork body and the middle fork body is maximum, the bottom provides upward counter-acting force through cooperation of the transmission assembly and the supporting assembly, the bending moment generated by the gravity of the goods is remarkably counteracted, and the stress concentration risk of the joint is reduced.

The adjustable inertia connecting rod vibration isolation device comprises a vibration isolation base, a vibration isolation platform, a connecting rod mechanism and a spring element, the connecting rod mechanism comprises two sets of connecting rod assemblies which are in bilateral symmetry, each connecting rod assembly comprises an upper connecting rod and a lower connecting rod, and the upper connecting rods and the lower connecting rods are hinged through bearings; each connecting rod assembly is connected with the vibration isolation platform and the vibration isolation base through bearings. The spring element comprises a compression spring and an extension spring, and the compression spring is vertically arranged between the vibration isolation base and the vibration isolation platform; the extension spring is horizontally connected with bearing joints of the left and right symmetrical connecting rod assemblies; an upper connecting rod and a lower connecting rod of the connecting rod assembly extend outwards along a connecting point to form a lever arm, a plurality of mass block mounting holes are formed in the tail end of the lever arm, and mass blocks with different masses can be detachably mounted. A parallel stiffness structure is formed through the compression spring and the extension spring, the mass size and the mounting position of the mass block are adjusted on the lever arm, and ultralow-frequency quasi-zero stiffness band gap vibration isolation is cooperatively achieved.

The utility model relates to the technical field of pipeline burying equipment, in particular to a pipeline burying device which comprises a supporting assembly, the supporting assembly comprises a supporting plate, the supporting plate is of an n-shaped structure, a transverse displacement assembly is arranged at the top of the supporting plate, a moving part on the transverse displacement assembly is a sliding table, and the sliding direction of the sliding table is in the X-axis direction. A vertical displacement assembly is arranged on the sliding table, a moving part on the vertical displacement assembly is a connecting plate, a clamping assembly is arranged on the connecting plate, and the displacement direction of the clamping assembly is in the Y-axis direction. The clamping assembly comprises a clamping jaw air cylinder, the clamping jaw air cylinder is fixedly installed on the bottom face of the connecting plate, clamping jaw connecting plates are fixedly connected to the two sides of the clamping jaw air cylinder, a conveying sliding groove is formed in the lower end of the clamping jaw connecting plate on each side, a sliding block is arranged in each conveying sliding groove in a sliding fit mode, V-shaped clamping jaws are fixedly arranged on the sliding blocks, and openings of the V-shaped clamping jaws on the two sides are oppositely arranged. The sliding block is connected with the clamping jaw displacement assembly, so that the V-shaped clamping jaw on the sliding block slides in the conveying sliding groove, and the sliding direction is in the Z-axis direction. The pipeline clamping and conveying device achieves the technical purposes that pipelines at different positions are automatically clamped and conveyed, and the pipelines are adjusted and aligned with the buried pipelines so that installation can be facilitated.

The invention provides a detachable steel structure hoisting gravity center adjusting device which comprises a base, a stand column fixing assembly is installed on the base, and the base is detachably connected with a hoisting frame used for hoisting a steel beam through the stand column fixing assembly. The hoisting frame comprises symmetrically-arranged stand columns and a cross beam fixedly installed at the top positions of the sides, close to each other, of the two stand columns, a lifting hook connecting plate is integrally formed at the top of the cross beam, lifting hook holes are formed in the lifting hook connecting plate, and steel beam inserting holes are formed in the bottoms of the stand columns. Through the design of the base, the stand column fixing assembly, the inclination sensor and the balance weight assembly, when the steel beam is hoisted, the gravity center adjusting effect in the hoisting period of the steel beam is achieved, the situation that in the hoisting period of the steel beam, the steel beam inclines due to gravity center shifting and then falls off, and potential safety hazards are caused is effectively avoided, hoisting safety is improved, and the hoisting efficiency is improved. And meanwhile, workers do not need to measure the size, the hoisting operation difficulty is reduced, and the hoisting efficiency is improved.

The utility model relates to the technical field of engineering machinery, and discloses a rotary telescopic boom forklift loader with a movable counterweight, which comprises a chassis, a turntable, a boom, a forklift accessory, an accessory switching device, a cab, a display controller, a wind speed and direction sensor, a length sensor, an angle sensor and a weighing sensor, the wind speed and wind direction sensor is fixed to the upper portion of the accessory switching device and detects the wind direction and the wind speed, the length sensor and the angle sensor detect the working posture of the boom, the weighing sensor detects the load state, and the display controller calculates the reasonable position of the balance weight. The movable counter weight is driven by the counter weight driving mechanism to move back and forth on the turntable bottom plate, so that the stability and the safety of the whole vehicle are effectively improved; through the movable balance weight, the gravity center force arm can be increased, under the condition of the same stable moment requirement, the needed balance weight is reduced, and the weight of the whole vehicle is effectively reduced.

This invention provides a fan blade and a fan. The fan blade includes a blade body and a counterweight structure. The blade body has an inner cavity and, along its length, has a blade root and a blade tip. The counterweight structure is disposed inside the inner cavity, along the length of the blade body, between the blade root and the plane where the center of gravity of the blade body is located. The fan blade of this application employs a counterweight structure inside the blade body to adjust the distribution of the fan blade's center of gravity. Compared to existing technologies, the center of gravity of the fan blade in this application shifts towards the blade root to form a new center of gravity. The counterweight structure is positioned between the plane of the new center of gravity and the blade root to maintain the new center of gravity, thereby improving the stability and efficiency of the fan operation and solving the problem of poor stability in existing fan blades during operation.

The invention relates to the technical field of communication boxes, in particular to an outdoor communication box convenient to maintain. Comprising a communication box body; the mounting plates are symmetrically connected to the two sides of the communication box body; the rotating baffle is rotationally connected to the mounting plate, and the rotating baffle is rotationally connected with the communication box body; the sliding top cover is slidably connected to the top of the communication box body; the electric roller shutter is mounted on the side surface of the sliding top cover; the air cylinders are symmetrically mounted on the two sides of the communication box body; the transverse plate is connected to a telescopic rod of the air cylinder. The sliding top cover moves forwards to shield the upper portion of the communication box body, left and right side protection is formed in cooperation with unfolding of the rotating baffle, front side shielding is formed in combination with drooping of curtain cloth of the electric roller shutter, a closed maintenance space can be defined in front of the communication box, and the structure effectively blocks severe environment influences such as oblique wind and rain and burning sun exposure; rainwater is prevented from seeping into equipment or wetting tools, and meanwhile the high-temperature operation risk of maintenance personnel is reduced.

The invention discloses an anti-seismic building structure based on the tumbler principle and application thereof.The anti-seismic building structure comprises a building model and further comprises a material box, a mounting hole is formed in the center of the top end of the material box, an ellipsoidal basin is embedded in the mounting hole, a hemispherical shell is arranged in the ellipsoidal basin, a supporting plate is fixedly connected to the top end of the hemispherical shell, and the building model is connected to the supporting plate; an elastic damping structure is arranged in the ellipsoidal basin and used for connecting the hemispherical shell and the ellipsoidal basin, a circular ring is further fixedly connected to the outer wall of the ellipsoidal basin, an elastic blocking block is connected to the side edge of the circular ring, and a supporting block is fixedly connected to the bottom wall of the material box and used for supporting the ellipsoidal basin. The invention has the following advantages: the tumbler principle is utilized to generate an anti-overturning restoring moment; by means of the multiple elastic damping structures arranged in a surrounding mode, multi-directional elastic deformation and damping are generated when the hemispherical shell swings, input energy is efficiently dissipated, and remarkable restraining and rapid recovery of shaking of the building model are jointly achieved.

The utility model discloses a swing suppressor for a lifting rope of a gantry crane. The swing suppressor comprises a lifting hook, the outer wall of the rope is in sliding connection with the outer wall of the lifting hook; the outer wall of the bolt is in threaded connection with the inner wall of the lifting hook through a threaded groove, and the threaded groove is formed in the wall of the lifting hook; the inner wall of the quick connecting mechanism is in threaded connection with the outer wall of the bolt; the outer wall of the restraining mechanism is fixedly connected with the inner wall of the quick connecting mechanism; the utility model relates to the technical field of mechanical engineering, through the arrangement of the restraining mechanism, a balancing weight can slide in the swinging direction in the swinging process, so that a push plate is driven to extrude the air bags, and the two sets of air bags are connected through a connecting pipe; therefore, the configuration liquid in the extruded air bag is extruded into the other air bag, the weight of the two sides of the lifting hook is changed, swinging of the lifting hook is restrained, and the purpose of the swing suppressor for the lifting rope of the gantry crane is achieved.

The invention provides a self-adaptive tuned mass damper and a parameter adjusting method. The self-adaptive tuned mass damper comprises a tuned mass damper body, a mass detection system, a hydraulic system and a control system. The tuned mass damper comprises a counterweight liquid container, a valve control damper and a spring; the counterweight liquid container is fixedly connected with the lower part of the machine tool workbench; the other end of the spring is connected with the counterweight liquid container; one end of the valve-controlled damper is connected with the machine tool workbench, and the other end is connected with the counterweight liquid container; the quality detection system is used for detecting the mass of the machine tool turntable main system and the mass of the counterweight liquid container; the control system is used for controlling the hydraulic system to adjust the mass of the balance weight liquid container and the damping coefficient of the valve control damper in real time according to a relation model of parameters of the self-adaptive tuned mass damper ATMD and the mass of the machine tool rotary table main system. A hydraulic system is controlled to adjust the mass of a counterweight liquid container and the damping coefficient of a valve control damper in real time according to a relation model of parameters of the self-adaptive tuned mass damper and the mass of a machine tool rotary table main system; the problems that the inherent frequency of a system is changed and the vibration reduction effect of a traditional constant-parameter tuned mass damper is invalid due to continuous reduction of the workpiece quality in cutting machining are effectively solved, the quality time-varying working condition of cutting machining of a numerical control machine tool is efficiently adapted, the machining precision is effectively improved, and the service life of machine tool parts and cutters is prolonged.

The utility model discloses a lifting mechanism of a display screen tooling plate, which comprises a fixing frame, a lifting platform, a lifting driving structure and a counterweight structure, the lifting platform is slidably mounted on the fixing frame along the Z-axis direction and used for bearing the tooling plate, and the lifting driving structure is mounted on the fixing frame and used for driving the lifting platform to slide along the Z-axis direction. The counterweight structure comprises a counterweight block, a guide wheel and a connecting belt, the counterweight block is slidably mounted on the fixing frame in the Z-axis direction, the guide wheel is rotatably mounted at the top of the fixing frame, and the connecting belt is wound on the guide wheel; one end of the connecting belt is connected with the balancing weight, and the other end is connected with the lifting platform; through cooperation of the fixing frame, the lifting platform and the lifting driving structure, accurate lifting of the tool plate in the vertical direction is achieved. And due to the introduction of a counterweight structure and the cooperation of a counterweight block, a guide wheel and a connecting belt, balanced lifting power is provided, shaking and noise in the lifting process are reduced, and the stability and safety of the lifting mechanism are improved.

The utility model discloses equipment for extracting reacted o-chlorobenzyl cyanide, and relates to the technical field of chemical extraction. The device comprises an extraction tank, a driving assembly is erected above the extraction tank and comprises a driving motor erected at the top of the extraction tank, a fixing frame is arranged on the peripheral side wall of the bottom of the extraction tank, the fixing frame comprises a bottom frame arranged at the bottom of the extraction tank and an erecting plate welded to the upper portion of the bottom frame, and a top frame is further fixedly installed at the top of the erecting plate; the base makes contact with the bottom side wall of the extraction tank through a damper, a fixing assembly is further arranged on the peripheral side wall of the base, and the base is connected with the bottom frame through the fixing assembly. According to the utility model, the damper is used for not only relieving the vibration generated when the extraction tank works, but also reducing the vibration transmitted to the base by the extraction tank, and the fixing frame and the extraction tank in the fixing frame are fixed on the base or other positions of a production workshop by using the fixing assembly capable of changing the fixing position and the length of the fixing assembly.