44results about How to "Eliminate vibration" patented technology

The application discloses a kind of robot friction stir welding force-position hybrid control method, it is related to robot welding control technical field, comprising the following steps: step S10 establishes the hybrid strategy model based on constant displacement control and constant pressure control, the trajectory deviation caused by flexible deformation is compensated by robot dynamic offset function;The constant displacement control monitors welding depth in real time by laser sensor, the laser sensor is installed in 45° oblique direction to the outer wall of motorized spindle, and the collection point is located in the front side of the welding advancing direction, to avoid the interference of flash;The constant pressure control is collected axial upset force by six-dimensional force sensor, and force feedback type impedance control strategy is adopted.The robot friction stir welding force-position hybrid control method compensates the flexible deformation of robot by dynamic offset function, combined with the hybrid strategy of constant displacement and constant pressure control, solves the problem of uneven weld forming under single control mode.

The utility model discloses a direct-drive electro-magnetic annular synchronous motor, and belongs to the technical field of large-scale synchronous motors. The motor comprises a split stator which is formed by splicing and fixing a plurality of stator petals along the circumferential direction; the block magnetic poles form a motor rotor, a plurality of independently-formed magnetic pole units are arranged at intervals in the circumferential direction, and each magnetic pole unit is directly and fixedly installed on the outer wall of the load rotating cylinder; the supporting and sealing structure is arranged at the axial end part between the split stator and the block magnetic pole and is used for sealing a gap between the split stator and the block magnetic pole; and the collector ring and brush carrier system is arranged at one axial end of the motor, and the output end of the collector ring and brush carrier system is electrically connected with the excitation windings of the block magnetic poles. According to the utility model, the split stator and the block magnetic pole structure are adopted, so that the transportation and field installation of the ultra-large motor are facilitated; the rotor is directly mounted on the outer wall of the milling cylinder to realize direct drive, a gear transmission link is omitted, the transmission efficiency is high, and operation is stable; a multi-layer sealing structure adapts to a high-dust environment, and the reliability is high; the speed regulation performance is good and the maintenance is convenient.

The utility model belongs to the technical field of vibrating screen, concretely is a kind of vibrating screen fixing device, including bottom plate, the bottom plate top is fixedly connected with multiple slide bars;The end portion of slide bar is slidably connected with support plate;The support plate bottom is fixedly connected with multiple compression springs;Compression spring is sleeved on the surface of slide bar, and the bottom of slide bar is provided with adjusting assembly;Adjusting assembly and compression spring are contact setting;One pair of air springs is fixedly connected between the support plate and bottom plate;Air pump is arranged in the side wall of bottom plate;Air pump and air spring are connected by air pipe;The range when vibrating screen body shakes can be limited by increasing first clamping block and second clamping block, then the transmitted vibration is absorbed by air spring and compression spring, so that it is quickly eliminated by the absorption diffusion of air spring and compression spring when vibrating, so as to reduce the shaking caused by vibration, make it more stable after placing and reduce position deviation.

This utility model discloses a vibration massage device, relating to the field of massage equipment technology. The vibration massage device includes a housing, a hollow support, a vibration component, and a buffer structure. The housing has two sides oppositely arranged in a first direction, and a gripping sidewall encircling the two sides. At least one of the two sides is a vibration massage surface. The hollow support abuts against the gripping sidewall and encloses an installation space extending in the first direction. The vibration component includes a vibration support and a vibrating element mounted on the vibration support. The vibration support is located in the middle of the installation space and extends along the first direction, having a top side and a bottom side, which abut against the two sides of the housing in the first direction, respectively. The buffer structure is located in the installation space and abuts against the vibration component and the hollow support. The technical solution provided by this utility model can achieve a good vibration massage effect while reducing the vibration sensation in the gripping part of the vibration massage device.

This invention relates to the field of tapping equipment technology, specifically a multi-axis synchronous tapping device for clutch stamping parts. It includes a tooling base on which an assembly is mounted. By installing a distance adjustment component on the upper mounting base and slidably connecting a third tapping gear to this component, the radial position of the third tapping gear and the tap can be flexibly adjusted, thereby changing the tapping distribution circle diameter. This allows the device to quickly adapt to clutch stamping parts with different hole specifications, significantly reducing changeover costs. Simultaneously, it employs a full gear transmission layout where one first tapping gear simultaneously meshes with multiple second tapping gears, and each second tapping gear then meshes with a third tapping gear. The transmission chain is short and all parts are rigidly synchronized, completely eliminating vibration problems caused by unequal speeds and expansion / contraction clearances in universal joint transmissions, effectively ensuring the machining accuracy of the threads.

This invention relates to the field of campus resource allocation and monitoring data processing technology, and discloses a campus-wide data quality control and sharing system and method, including: acquiring personnel location trajectory data and building energy consumption time series data; when the timestamp deviation value exceeds a threshold, running a differential compensation function and index correction coefficient for numerical hedging; outputting aligned and reconstructed feature parameters to calculate the resource utilization deviation matrix; performing smooth regression prediction when sampling frames are lost; using data processing tokens to resolve bus read / write conflicts under high concurrency load; and converting the shared data access control boundary into a dynamic routing table control strategy and outputting resource allocation data instructions when the matrix exceeds a safety threshold. This invention resolves the time series feature differences caused by multi-rate asynchronous sampling, suppresses control signal overshoot and decision loop oscillation, improves the convergence speed of control deviation, and ensures system processing efficiency.

This invention discloses a high-speed side-push type carton packing system in the field of packaging equipment technology, including: a frame and a feeding and conveying mechanism, a stacking mechanism, a storage mechanism, an opening mechanism, a packing mechanism, and a sealing mechanism mounted on the frame. The opening mechanism is used to pick up the packaging cartons stacked on the storage mechanism and unfold them so that the opening of the packaging carton faces horizontally. The packing mechanism includes a support and a push plate, a limiting baffle, and a first driving component mounted on the support. This invention abandons the traditional vertical gravity unloading method and instead adopts a side-push horizontal packing method. The first driving component precisely controls the push plate's movement, smoothly pushing the vertically stacked items from the side into the unfolded packaging carton, eliminating the impact and vibration generated during the free fall of materials, avoiding the risk of breakage of fragile items during packing, and ensuring the consistency and integrity of the product's posture before and after entering the carton.

The invention discloses a double-coil brushless motor controller, and relates to the technical field of brushless motor control. The controller comprises a Hall sensor, a control module, a relay module, a three-phase inverter bridge module and a power supply module, the Hall sensor collects motor signals, the control module calculates the angle and the rotating speed of the motor, the relay module is controlled through specific logic to switch connection of the high-speed coil and the low-speed coil, and meanwhile adaptive driving voltage is calculated according to a formula and output to the motor through the three-phase inverter bridge module. The problem of vibration caused by mismatching of back electromotive force during switching of an existing double-coil motor is solved, smooth switching of the coils is achieved, high and low rotating speeds and large torsion performance are considered, and the double-coil motor is suitable for the requirements of multiple scenes such as kitchen appliances and has the advantages of being high in stability and high in adaptability.

The utility model relates to the technical field of servo motor manufacturing, and discloses an anti-loosening rotor core assembly on a motor, which comprises an iron body, the inner wall of the iron body is fixedly connected with a rotating shaft, the inner wall of the iron body is connected with a reinforcing rib, the left end and the right end of the reinforcing rib are fixedly connected with a shaft disc, the inner wall of the shaft disc is connected with a fixed shaft, and the fixed shaft is fixedly connected with the rotating shaft. The outer wall of the fixing shaft is in threaded connection with a nut, the left side and the right side of the iron body are both connected with embedded pipes, the outer walls of the embedded pipes are provided with embedded grooves, and the outer walls of the embedded grooves are connected with expansion rings. According to the motor rotor structure, the grid-shaped reinforcing ribs are integrated in the middle of the iron core to achieve mechanical strengthening, the end portion of the iron core is in rigid connection with the shaft disc through the interference fit technology, the groove channels are formed in the surface of the embedded column on the iron core through laser machining, and the shape memory alloy expansion rings are assembled in the grooves. When the temperature reaches a preset threshold value, the expansion ring generates directional deformation, so that the overall stability of the fixing assembly is improved.

This utility model discloses a honeycomb cell stacking positioning mechanism for a wind tunnel honeycomb module welding device in the field of honeycomb cell stacking welding technology. It includes an upper positioning component mounted on a limiting mechanism of a welding platform. The upper positioning component has a spliced ​​structure and includes a first positioning component and a second positioning component. A positioning element is provided between the first and second positioning components. The positioning element corresponds to the diameter of the honeycomb tube in the honeycomb module and penetrates through the honeycomb tube. This utility model constructs a rigid frame by having the working section of the positioning element penetrate the honeycomb tube and tightly connect it to the upper positioning component using a connecting section. This ensures that each honeycomb cell receives bottom support and top clamping, locking it in a predetermined position. This eliminates the slight displacement and rotation caused by uncertainties such as uneven clamping force, visual deviation, and operational vibration in traditional stacking processes.

This invention provides a method and system for reactive power coordination control and circulating current suppression in a wind, solar, and energy storage power plant cluster, belonging to the field of power system operation control technology. The method includes: collecting operating data from each substation and calculating a normalized circulating current index; activating a circulating current suppression mode when the index exceeds limits, obtaining the total reactive power target command for the power plant cluster, and identifying the target reactive power direction based on a dead zone threshold; dynamically clamping the upper or lower limits of reactive power output of each substation according to the target direction, generating a unidirectional blocking command to cut off the circulating current loop; and performing margin balancing control in non-suppression mode. This invention eliminates the influence of power plant capacity differences on the criteria through a normalized index, effectively solves the reactive power circulating current and control deadlock problems caused by opposite output by utilizing dynamic clamping logic based on target commands, and integrates voltage safety verification to achieve coordinated optimization of reactive power resources across multiple power plants and stable control of grid voltage.

The invention discloses oil seal air tightness detection equipment for an electric vehicle driving motor. The oil seal air tightness detection equipment comprises a rack, a conveying module and an air tightness detection module. The conveying module is matched with a jacking limiting assembly through a roller conveying line, and automatic feeding, accurate positioning and rigid locking of the motor are achieved. The air tightness detection module comprises an air tightness instrument, an air tightness pressing module and an automatic point inspection module. A pressing air cylinder drives an air tightness pressing head to conduct sealing detection on the motor oil seal. The equipment innovatively adopts a jacking-support changing structure, stable stress is provided by a supporting plate, and detection micro-motion is eliminated; an automatic point inspection function is integrated, a zero leakage comparison tool can be periodically called to carry out on-line self-calibration on the system, and precision drift is effectively early warned. The motor oil seal airtightness detection device realizes full automation of the detection process, has the characteristics of high precision, high stability and intelligent self-maintenance, and ensures the consistency and long-term reliability of motor oil seal airtightness detection.

The application provides a load distribution method for a steam turbine generator, which comprises the following steps: setting a load measuring point and a displacement measuring point respectively; repeatedly testing the load and initially adjusting the thickness of the foot pad corresponding to the stable measuring point; adjusting the jack at the stable measuring point according to the load table of the steam turbine generator; testing the load of each jack at the adjustment measuring point while maintaining the jack at the stable measuring point; and adjusting the thickness of the foot pad corresponding to the adjustment measuring point again according to the test result. The load measuring point and the displacement measuring point corresponding to the foot pad are set, the load of the steam turbine generator stator part is adjusted at each load measuring point and displacement point, the thickness of the corresponding foot pad is adjusted, and the thickness of the foot pad of the steam turbine generator end cover part is adjusted, so that the load of the generator after the steam turbine unit maintenance is quickly leveled, and the vibration of the generator is eliminated.

This utility model discloses a blade structure with aerodynamic damping function in turbomachinery, belonging to the technical field of blade structure technology. It includes a blade, a swing groove, a damping block, a connecting hole, and damping air holes. The swing groove is located at the root of the blade, and the blade has a matching connector for the turbomachinery. The connecting hole is located within the connector. The damping block includes a connecting part, a swing part, and a damping part, all made of elastic material. The connecting part is inserted into the connecting hole, and the damping part is located within the swing groove. The connecting part and the damping part are connected by the swinging part, and the top of the damping part is fixed to the top of the swing groove. Multiple damping air holes are provided through the blade at positions corresponding to the swing groove. This utility model dissipates energy through the elastic swing of the damping block and the damping air holes, without affecting the structural integrity of the overall impeller in the turbomachinery, and suppresses high-order modal vibrations.

The utility model discloses a noise reduction structure of a water absorption motor of an automatic scrubber, which comprises a support and a motor, the support is provided with a hollow inner cavity, the inner cavity is provided with a fluid channel, two ends of the fluid channel are provided with a fluid inlet and a fluid outlet, and the fluid inlet and the fluid outlet are arranged on the wall surface of the support; the support is provided with a through positioning channel, the motor is provided with an extraction opening and a drainage opening, the motor is arranged on the support and inserted into the positioning channel, the extraction opening and the positioning channel are oppositely arranged, and the drainage opening is connected with the fluid inlet through the pipe body. The noise reduction structure is arranged to be the support, installation of the motor is facilitated, the structure is more compact, noise reduction of fluid is achieved, the fluid channel is arranged in the support, flow guiding and noise reduction of the fluid at the drainage port of the motor are achieved, the support is a hollow inner cavity, vibration of the motor can be eliminated, and noise reduction of the motor is achieved. And therefore, the dual noise reduction effect is realized.

This invention provides a continuous stepless adjustment device, method, and application for electron beam based on the axial position control of the convergence point, belonging to the field of electron optics adjustment technology. The invention includes an anode body, an anode aperture, an electromagnetic focusing unit, and a fixed single-aperture main aperture, coaxially arranged along the electron beam propagation direction within the lens barrel of an electron optics system. This invention uses the axial position of the electron beam's convergence point relative to the fixed single-aperture main aperture as the control degree of freedom. The electromagnetic focusing unit continuously adjusts the displacement of the convergence point along the optical axis, achieving continuous stepless adjustment of the electron beam. By completely eliminating the mechanical moving parts of the aperture, this invention not only achieves continuous and smooth adjustment of the electron beam but also fundamentally avoids the vibration, contamination, and failure risks caused by mechanical movement. This significantly improves the reliability, repeatability, and long-term stability of the electron optics system, while simplifying the system structure and reducing manufacturing and maintenance costs.

This utility model relates to the field of traction motor testing technology, specifically a locomotive traction motor tester, including a base. The base has four symmetrically distributed positioning blocks. A limiting mechanism for adjusting the position of the four positioning blocks is also provided on the base. Two symmetrically distributed first push rods and two symmetrically distributed second push rods are slidably mounted on the base. The two sets of first and second push rods are perpendicularly distributed. Each of the four positioning blocks is slidably engaged with a corresponding set of first and second push rods. Through a transmission design where the mounting rod directly drives the first gear and the mounting tube directly drives the second gear, precise linkage adjustment of the four positioning blocks is achieved. The clever combination of ratchet, pawl, spring, and electromagnetic adsorption components achieves bidirectional mechanical locking of the mounting rod and drive rod, preventing vibration from affecting the motor's stability.

This invention discloses a vibration-damping check valve, belonging to the field of check valve technology, which solves the problem of large opening and closing vibration in traditional swing check valves. The invention includes a valve body, a main valve cover, an inlet chamber, an outlet chamber, a valve seat, a rocker arm, and a valve disc. A liftable baffle is provided on the left side of the valve seat, and a media-driven drive structure is installed on the upper left of the valve body. The drive structure includes a drive chamber, a drive plate, an anti-rotation drive rod, a drive sleeve with a helical drive groove, a gear pair, and a screw. The linear motion of the drive rod is converted into rotational motion by the drive sleeve, driving the baffle to rise and fall smoothly. A buffer plate is hinged to the lower part of the baffle, forming a buffer mechanism with a buffer cone and a buffer spring. An overflow check valve is provided at the upper end of the valve seat, connecting the closed chamber and the outlet chamber. This invention, through baffle flow control, multi-stage buffering, and overflow pressure relief, slows down the opening and closing speed of the valve disc, eliminates vibration and water hammer, prevents loosening of connecting parts, improves sealing reliability and service life, and is suitable for backflow prevention scenarios in large-diameter, high-pressure pipelines.

The stripping mechanism comprises a base, a top frame is fixedly installed on the outer side of the top of the base, a supporting plate is fixedly installed in the center of the top of the base, a lower pressing block is arranged in the center of the top of the supporting plate, and a movable plate is arranged at the position, corresponding to the lower portion of the lower pressing block, of the center of the top of the supporting plate. According to the stripping mechanism for hardware part bending, a linkage structure of variable frequency motors, a threaded rod, a threaded sleeve plate and a limiting rod is arranged on the opposite sides of the side plates, after a hardware part is bent and stripped, a lower pressing block is reset to the initial position through a rotating rod, and at the moment, the two variable frequency motors arranged front and back are synchronously started to drive the threaded rod to rotate; according to the limiting structure, the threaded sleeve plate is driven to slide along the connecting rod, the limiting rods on the two sides accurately penetrate through the side plates and are clamped to preset clamping grooves of the lower pressing block, absolute positioning of the lower pressing block is achieved through mechanical rigid connection, and tiny deviation or vibration after resetting is effectively eliminated.

The application discloses a high-shading PETG shrink film and a preparation system thereof, and relates to the technical field of plastic film production. The preparation system comprises a feeding cylinder, a first conveying screw rod rotatably installed in the feeding cylinder, a driving element connected with the first conveying screw rod and installed at one end of the feeding cylinder, an extrusion die head installed at the other end of the feeding cylinder, a second conveying screw rod installed in the feeding cylinder, a supporting and mixing mechanism installed between the first conveying screw rod and the second conveying screw rod, and a reciprocating filtering assembly movably installed between the supporting and mixing mechanism and the second conveying screw rod. The application limits the shading agent to be rutile titanium dioxide with a specific particle size range and the adding proportion, so that the shrinkage performance of the film is considered while the high-shading property is ensured. The supporting and mixing mechanism driven by the first conveying screw rod is arranged in the preparation system, so that the forced mixing and stirring of the material are realized in the conveying process.

This invention relates to the technical field of high-pressure heaters and discloses a heat dissipation device for a thick-film high-pressure heater, comprising a flow channel shell assembly, a flow channel heat-conducting component fixedly installed above the flow channel shell assembly, a liquid mounting cavity between the flow channel shell assembly and the flow channel heat-conducting component, and an equipment mounting groove inside the flow channel heat-conducting component; a heat insulation layer, a thick-film heater, and an inorganic heat-conducting layer are fixedly installed inside the equipment mounting groove; the flow channel heat-conducting component is provided with several sets of S-shaped guide fins, and the flow channel shell assembly is provided with a spiral guide component; this invention, through the matching arrangement of the thick-film heater and the inorganic heat-conducting layer, ensures that the thick-film heater is completely placed inside the equipment mounting groove, forming a physical isolation state from the antifreeze in the liquid mounting cavity, preventing direct contact with the liquid, and effectively avoiding damage such as corrosion, erosion, and scaling caused by the antifreeze to the heating element.

The utility model provides a hob subassembly, including mounting shaft, annular knife and knife rest, the knife rest includes mounting piece and limit piece, the mounting piece includes the annular mounting portion that is sleeved on the mounting shaft and with the locking portion that is connected with the annular mounting portion, the locking portion has the first end and the second end that are opposite to each other, and the limit piece is connected with the first end and the second end. The first end and the second end are connected through a fastening connecting piece so that the locking part can be fixed to the mounting shaft in a surrounding mode, a plurality of limiting grooves are formed in the outer surface, back to the locking part, of the annular mounting part, and the mounting shaft is sleeved with the limiting piece which is connected with the annular mounting part through connecting pieces arranged in the limiting grooves. The annular cutter is arranged on the mounting shaft in a sleeving mode and located between the outer surface and the limiting piece in the axial direction of the mounting shaft, the connecting piece is arranged on the annular cutter in a penetrating mode, and the central axis of the annular cutter is parallel to the axial direction. The hobbing cutter assembly solves the problem that materials are not cut well in the using process of the hobbing cutter assembly.

This utility model discloses a dual-station winding embedded internal pressure roller mechanism. The internal pressure roller mechanism includes a rodless cylinder, a mounting arm, a drive motor, and a pressure roller. The mounting arm is mounted on the rodless cylinder, and the drive motor and the rotatable pressure roller are fixedly mounted on the mounting arm. The rodless cylinder is positioned corresponding to the first and second winding shafts, and upon startup, it drives the mounting arm to move towards the first or second winding shaft, causing the pressure roller to press against the material on the first or second winding shaft. The drive motor connects to the pressure roller, thus driving the pressure roller to rotate actively upon startup. This utility model pre-drives the pressure roller with the drive motor, synchronizing the pressure roller with the winding speed before pressing, eliminating surface abrasion caused by speed differences. After stable pressing, the power to the pressure roller is removed, eliminating vibration between the pressure roller and the drive motor structure, which is more conducive to obtaining ideal crushing and winding effects, and also achieves energy saving.

The utility model relates to a vibration absorber and a vehicle, the vibration absorber is used for attenuating the vibration of a transmission shaft, and the vibration absorber comprises a first mass block, a second mass block, an elastic piece and a connecting disc used for connecting the transmission shaft; the elastic piece comprises a first elastic part and a plurality of second elastic parts arranged at intervals in the circumferential direction of the connecting disc. The first elastic part wraps the periphery of the first mass block and is connected with the inner circumference of the connecting disc, so that the inner circumference of the connecting disc is connected with the first mass block through the first elastic part; the second elastic part is arranged between the inner periphery of the second mass block and the outer periphery of the connecting disc, and the outer periphery of the connecting disc is connected with the second mass block through the second elastic part. Bending vibration and torsional vibration of the transmission shaft can be attenuated at the same time, so that vibration of the transmission shaft is greatly eliminated, kinetic energy loss is reduced, the transmission shaft can transmit more kinetic energy, and the working efficiency of the transmission shaft is improved.

This invention discloses a vibration-damping check valve, belonging to the field of check valve technology, which solves the problem of large opening and closing vibration in traditional swing check valves. The invention includes a valve body, a main valve cover, an inlet chamber, an outlet chamber, a valve seat, a rocker arm, and a valve disc. A liftable baffle is provided on the left side of the valve seat, and a media-driven drive structure is installed on the upper left of the valve body. The drive structure includes a drive chamber, a drive plate, an anti-rotation drive rod, a drive sleeve with a helical drive groove, a gear pair, and a screw. The linear motion of the drive rod is converted into rotational motion by the drive sleeve, driving the baffle to rise and fall smoothly. A buffer plate is hinged to the lower part of the baffle, forming a buffer mechanism with a buffer cone and a buffer spring. An overflow check valve is provided at the upper end of the valve seat, connecting the closed chamber and the outlet chamber. This invention, through baffle flow control, multi-stage buffering, and overflow pressure relief, slows down the opening and closing speed of the valve disc, eliminates vibration and water hammer, prevents loosening of connecting parts, improves sealing reliability and service life, and is suitable for backflow prevention scenarios in large-diameter, high-pressure pipelines.

The utility model provides a guide structure regulating valve with an external valve core and an internal valve seat, which relates to the technical field of valve structures, and comprises a valve body, the valve seat and the valve core, the valve body comprises a valve cavity, the valve seat comprises a valve seat body and a guide shell connected above the valve seat body, the valve seat body is connected to the inner wall of the valve cavity, and the valve core is arranged in the guide shell. A plurality of throttling hole sets are evenly formed in the guide shell in the radial direction of the guide shell, and each throttling hole set comprises two centrosymmetric throttling holes. The valve element is arranged on the periphery of the guide shell in a sleeving mode and moves up and down along the guide shell so as to adjust the opening degree of each throttling hole. The whole stroke of the valve element is guided through the guide shell, fluid can be decomposed into a series of jet flows through the multiple throttling hole sets in the guide shell, the jet flows collide with one another in the center area of the guide shell, and the mutual counter-acting force of the fluid is limited in the center area in the valve seat; and the situation that the valve element is unstable due to unbalanced impact force of a medium can be effectively prevented.

The application discloses an advertisement production laser engraving device, and relates to the technical field of advertisement production laser beam processing. The technical scheme of the patent is characterized in that the advertisement workpiece is processed and engraved by a laser beam through a laser engraving device, and the device comprises a processing frame, an auxiliary clamping mechanism, a moving plate two installed on a waste frame, and a spring rod two installed on the moving plate two. The two ends of the workpiece are adaptively clamped through a force receiving clamping plate one. The workpiece is flexibly clamped through the expansion contact blocks arranged on the surface of the force receiving clamping plate one, so that the micron-level warping trend of the workpiece caused by heat is avoided. The expansion contact blocks arranged on the surface of the force receiving clamping plate one in the corresponding direction can compensate for the gap change in time by virtue of the internal elastic pre-tightening force, and the phenomenon that the workpiece vibrates along with the laser head caused by unilateral clamping loosening is completely eliminated.

The utility model relates to the technical field of clothes washing equipment, in particular to an exhaust structure of a small washing and drying all-in-one machine. According to the exhaust structure of the small washing and drying all-in-one machine, the all-in-one machine comprises a washing barrel and a shell assembly, an airflow channel is formed in the barrel wall of the washing barrel, and the airflow channel is connected with an exhaust outlet of the washing barrel and an exhaust outlet of the shell assembly; the airflow channel comprises a corrugated pipe; the shell assembly comprises a shell body and a lining body, the lining body is sleeved with the shell body, and the air outlet comprises a body air opening formed in the shell body and a lining body air opening formed in the lining body; a pipe opening of the corrugated pipe is fixed to the air opening of the lining body through a sealing piece, an air opening end cover is arranged on the air opening of the body and provided with a ventilation hole, and the ventilation hole is connected with the corrugated pipe. An exhaust structure of a small washing and drying all-in-one machine has the advantages that airflow circulation is improved, the drying effect is improved, and temperature rise caused by the fact that hot airflow flows into the space between a washing barrel and a shell assembly is avoided.

This utility model discloses a circular die-cutting machine, relating to the technical field of circular die-cutting machines. It includes a fixed plate, a circular die-cutting assembly on the top of the fixed plate, a gantry frame on the top of the fixed plate, and a fixed shell on the surface of the gantry frame. Limiting mechanisms for preventing material deviation on the left and right sides are provided on the gantry frame and the fixed shell. Two clamping mechanisms for clamping the material on the upper and lower sides to prevent jumping are provided on the limiting mechanisms. Each limiting mechanism includes a limiting shaft rotatably mounted on the gantry frame. A gear is fixedly mounted at the bottom end of the limiting shaft. Two moving rods are slidably mounted on the inner wall of the fixed shell. A toothed rod is fixedly mounted on the surface of each of the two moving rods, and the two toothed rods mesh with the gear. This utility model achieves positioning and correction for materials of various widths and thicknesses, offering high flexibility, good correction effect, improved die-cutting accuracy, simple operation, and strong practicality.

The application discloses a drought-resistant and flood-draining pump with a buffer base, relates to the technical field of water conservancy projects, and is used for solving the problems that the existing pump body is easily blocked by floating objects during work, is damaged, and is easily deviated due to vibration generated during the work of the pump body, and comprises a pump body, a chassis and a handrail, the pump body is installed at the top of the chassis, the top of the chassis is fixed with the handrail through spot welding, the bottom of the chassis is installed with a supporting assembly, one side of the pump body is installed with a cleaning assembly, the sleeve is communicated with the pump body through bolts, the inside of the sleeve is fixedly connected with a fixing frame, and the fixing frame is movably connected with a first rotating blade on one side through a bearing. Compared with the prior art, the application has the advantages that the pump body can be better damped, floating objects in flowing water can be effectively collected, and the floating objects are prevented from entering the inside of the pump body to affect the work of the pump body.