30results about How to "Low driving power" patented technology

The invention relates to the technical field of agricultural machinery, and particularly discloses a finger clamp type seed sowing device which comprises a shell, an outer cover, a transmission shaft and a driven chain wheel, and further comprises a plurality of seed clamping and sowing combination bodies arranged in the circumferential direction of the transmission shaft, each seed clamping and sowing combination body comprises a low clamp, a finger clamp and a torsional spring, the low clamp comprises a hollow pipe, and the finger clamp is arranged in the hollow pipe; the axial direction of the hollow pipe is the same as the radial direction of the transmission shaft, one end of the hollow pipe is fixedly provided with a low clamping piece, and the other end of the hollow pipe is fixedly provided with a low clamping seed-metering shifting fork and a low clamping seed-filling shifting fork; the finger clamp comprises a connecting rod, the connecting rod penetrates through the hollow pipe, the finger clamp is fixedly arranged at one end of the connecting rod, and a finger clamp shifting fork is fixedly arranged at the other end of the connecting rod; according to the finger clamping type seed-metering device, the finger clamping piece and the low clamping piece are used for clamping seeds, a double-clamping-piece clamping mode is adopted, and compared with an existing single-finger pressing and pushing type finger clamping type seed-metering device, the clamping force between the seeds and the finger clamping piece and the clamping force between the seeds and the low clamping piece are moderate, and the seeds are not prone to being damaged.

The utility model relates to a kind of single-motor clutch type power head of trenchless drilling rig, including box, hydraulic motor is provided outside box;It further includes spline shaft, first spline gear, second spline gear, double spline sleeve, push rack, inner shaft and outer shaft;The number of hydraulic motor is only one, first spline gear is located on spline shaft, inner shaft and outer shaft are rotatably connected with box;Inner shaft is driven gear and first spline gear transmission connection;Second spline gear is rotatably connected with box, double spline sleeve is movably arranged on spline shaft, push rack can drive double spline sleeve along spline shaft to engage or separate second spline gear, outer shaft is driven gear and second spline gear transmission connection.The utility model reduces two hydraulic motors to one under the premise of realizing the common drive and separate drive of inner drill rod and outer drill rod of inner and outer drill rod, reduce the weight of double drive power head, simplify the hydraulic system of trenchless drilling rig.

The invention discloses a ball guide rail movable translation automatic door which comprises bearing columns arranged on the two sides, a bearing steel beam is arranged at the tops of the bearing columns, an aluminum alloy bottom rail is arranged on the bearing steel beam, a C-shaped hanging movable rail moving left and right along the aluminum alloy bottom rail is hung on the aluminum alloy bottom rail, and a movable door leaf is hung below the C-shaped hanging movable rail. Balls are arranged between the C-shaped suspension movable rail and the aluminum alloy bottom rail at intervals. A driving mechanism, a power adapter and a controller are arranged on the bearing steel beam, the output end of the power adapter is connected with the power input ends of the driving mechanism and the controller, and the output end of the controller is connected with the input end of the driving mechanism. The rolling balls are in contact with the rail, the contact area of the C-shaped suspension movable rail and the aluminum alloy bottom rail can be reduced, the friction force is small, high precision, high rigidity, high speed performance and low abrasion are achieved, the driving power is reduced, the operation efficiency is improved, and the operation experience is optimized.

The present invention proposes a method for optimizing the design of an energy-saving butterfly valve structure, which relates to the technical field of computer-aided three-dimensional modeling. The energy-saving butterfly valve is three-dimensionally modeled to create a valve body and a valve plate of the energy-saving valve. A fluid channel and a fluid domain that penetrate the valve body are created inside the valve body. The fluid domain includes a curved area located at the center of the inner surface and a plane area located on both sides of the center. The sealing parameters of the sealing structure of the valve plate periphery are designed to ensure that the actual sealing pressure of the sealing structure is within a limited range. The three-dimensional model of the energy-saving butterfly valve is fluid simulated to optimize the curved area and plane area parameters of the fluid domain. The energy-saving butterfly valve structure designed by optimization can extend its service life, reduce the amount of sealant used, and reduce costs while ensuring the sealing performance.

The present invention belongs to the technical field of road cleaning, and in particular, relates to a garbage crushing device for sanitation vehicles. The present invention comprises a sanitation vehicle body, wherein a plurality of vehicle driving wheels symmetrically arranged along the center line of the sanitation vehicle body are arranged at the bottom of the sanitation vehicle body, a suction nozzle body is arranged on the sanitation vehicle body, and a suction pipe and a cover shell are arranged at the top of the suction nozzle body. The present invention designs the suspended special-shaped crushing blade assembly into a cantilever form, and there is no need to use a cutter head shaft to fix the suspended special-shaped crushing blade assembly at both ends of the cover shell. The resistance torque is small during driving, the energy consumption is low, the radial runout is reduced during high-speed rotation, it is not easy to cause structural damage, and the service life is long. At the same time, the suspended special-shaped crushing blade assembly can crush long strips of garbage such as branches entering the suction pipe in any posture, and the crushing capacity is stronger than that of traditional blades, the crushing effect is good, and the anti-blocking effect of the pipe is significantly improved.

The invention relates to the technical field of generators, and provides an inertial energy storage power generation system and an operation control method.The inertial energy storage power generation system comprises a motor, at least two energy storage assemblies, a generator and a control system, the motor, the energy storage assemblies and the generator are coaxially arranged, and the energy storage assemblies are coaxially connected between the motor and the generator; each energy storage assembly comprises a hydraulic coupler and a flywheel, the hydraulic couplers and the flywheels of the energy storage assemblies are sequentially distributed in the axial direction from the motor to the generator, and the hydraulic couplers in the energy storage assemblies are in driving connection with the flywheels so as to drive the flywheels to rotate. The motor and the hydraulic coupler in each energy storage assembly are electrically connected with the control system. According to the inertial energy storage power generation system, energy is slowly stored through flywheels one by one so as to reduce the driving power of the motor, and the energy stored by the flywheels in the energy storage assemblies is high, so that the high-energy-storage power generation system is achieved, that is, the low-power motor drives the high-energy-storage power generation system.

The utility model provides a hydraulic system for a pipe fitting pressure testing machine, and relates to the technical field of hydraulic systems, the hydraulic system comprises a main oil supply device, a hydraulic control valve group, an execution assembly and an auxiliary oil supply device, the main oil supply device comprises a main oil tank, a first hydraulic pump and a second hydraulic pump; the hydraulic control valve group comprises a first electro-hydraulic directional control valve, a first hydraulic control one-way valve, a two-position two-way electromagnetic valve, a second electro-hydraulic directional control valve, a second hydraulic control one-way valve, a servo proportional valve, a third hydraulic control one-way valve and a third two-position four-way electromagnetic valve; the execution assembly comprises a water pressure cylinder, a main sealing pressing cylinder and two auxiliary hydraulic cylinders. The auxiliary oil supply device comprises an auxiliary oil tank and a prefill valve. The water pressure boosting cylinder is connected with a first pressure sensor, the main sealing pressing cylinder is connected with a second pressure sensor, and the first pressure sensor and the second pressure sensor are in communication feedback control connection with the servo proportional valve. Water pressure and sealing pressure data are collected in real time, and closed-loop control and dynamic balance of pressure are achieved.

The application discloses a front light guide plate for a reflective display device and a manufacturing method thereof, comprising a light guide plate body with an incident light surface and an exit light surface oppositely arranged; a plurality of light guide dots formed on the exit light surface for guiding light from the incident light surface to a display surface of the reflective display device; wherein the light guide dots are conical or pyramidal; when the light guide dots are conical, the ratio of the bottom width A to the depth B is less than 0.1; when the light guide dots are pyramidal, the included angle between the inclined surface and the bottom surface is between 55 degrees and 70 degrees. The application optimizes the shape parameters of the dots, so that the light is more efficiently guided to the display surface, thereby significantly improving the overall display brightness under the same light source conditions.

The utility model relates to a solid-state relay, which comprises a switch control circuit, a transformer control circuit, a transformer, a rectification drive circuit and a switch circuit which are sequentially connected in series, the switching circuit comprises a switching tube Q3 and a switching tube Q4 which are connected in series reversely, grid electrodes of the switching tube Q3 and the switching tube Q4 are jointly connected with a driving control signal output by the rectification driving circuit, source electrodes of the switching tube Q3 and the switching tube Q4 are connected with an output signal of the rectification driving circuit, and drain electrodes of the switching tube Q3 and the switching tube Q4 output an output signal; or the drain electrodes of the switch tube Q3 and the switch tube Q4 are connected with the output signal of the rectification driving circuit, and the source electrodes of the switch tube Q3 and the switch tube Q4 output the output signal. According to the solid-state relay, the mos tubes or the IGBTs which are reversely connected in series serve as switching devices, meanwhile, the high-frequency on-board transformer is adopted for coupling, the switching speed of the solid-state relay is higher, the driving power is smaller, meanwhile, extra isolation power sources and driving signals are reduced, the number of used devices is reduced, the product size is reduced, and the production cost is reduced.

The invention discloses an upper sealing assembly and a circular cooler, relates to the technical field of circular coolers, and mainly aims at solving the problems of sealing deformation and leakage caused by the fact that a water tank moves along with a trolley breast board and cannot store too much water. According to the main technical scheme, the upper sealing assembly is used for the circular cooler, the circular cooler comprises a sealing cover, a trolley breast board and a rotary frame, the sealing cover is arranged above the trolley breast board, the trolley breast board and the rotary frame are relatively fixed, the upper sealing assembly comprises a water tank and an insertion plate, and the insertion plate is arranged in the water tank. The water tank is arranged on the side wall of the sealing cover, the inserting plate and the trolley breast board are relatively fixed, and at least part of the inserting plate is inserted into the water tank.

The utility model relates to a laser scanning mechanism for a laser beauty instrument. The laser scanning mechanism comprises a laser generator, a galvanometer swinging device and a focusing shaping lens group, the laser generator and the cooling fins are connected together and are installed and fixed. One or two galvanometer swinging devices are arranged on a propagation path of a laser beam generated by the laser generator; the galvanometer swinging device comprises a galvanometer motor and a reflecting mirror, and the reflecting mirror is driven by the galvanometer motor to swing; and a focusing shaping lens group is arranged on the rear side of the galvanometer swinging device. According to the utility model, the galvanometer swinging device is arranged on the light path of the laser, the laser beam is reflected through the reflecting mirror of the galvanometer motor, and finally, a focusing working point is formed after light beam shaping and focusing and is used for beautifying the skin. According to the utility model, the structure space for swinging the laser can be reduced, the driving power is reduced, and the galvanometer motor can be arranged away from the laser to avoid heat accumulation during working; two galvanometer swing devices can be arranged in the laser beauty instrument to form two-dimensional scanning motion.

The utility model discloses a magnetic suspension centrifugal machine which comprises a centrifugal machine shell, a centrifugal machine inner container and an electromagnetic force disc. Double rolling bodies are mounted at the upper part inside the centrifugal machine shell; the upper portion of the centrifugal machine inner container is provided with a first ring piece extending outwards and a supporting plate extending inwards. The first ring piece is inserted between the upper rolling body and the lower rolling body of the double rolling bodies; a magnet block is mounted on the supporting plate; the electromagnetic force disc is suspended above the centrifugal machine inner container and comprises an inner ring body and an outer ring body, and the inner ring body comprises an intermittent electrifying assembly; the outer ring body comprises an electromagnetic block, and the intermittent power-on assembly is connected with the electromagnetic block through a wire. Through the design of the electromagnetic force disc suspended above the centrifugal machine inner container and the design of generating a magnetic field by connecting the gap type electrifying assembly in the electromagnetic force disc with the electromagnetic block through the wire, the magnetic block on the centrifugal machine inner container is attracted to rotate, and the centrifugal machine inner container is driven to rotate; the device has the advantages of simple and reasonable structural design, good operation safety and low driving power, effectively reduces energy consumption, and is energy-saving and environment-friendly.

The present invention discloses a low-polarization directional sound-emitting screen and a preparation process thereof. The directional sound-emitting screen comprises a vibration layer and a non-vibration layer. The present invention preferably adopts a fluoroplastic material with low dielectric loss, high breakdown field strength, small number of polar groups, high molecular weight and high crystallinity for the insulating layer between the vibration layer and the non-vibration layer. At the same time, by adjusting the position of the supporting pattern and the conductive layer on the non-vibration layer, the dielectric layer between the two conductive layers of the vibration layer and the non-vibration layer is reduced. The combination of the two can reduce the sound pressure drop problem of the directional sound-emitting screen caused by the negative polarization voltage brought by the dielectric.

The utility model discloses a split type section bar fixing device and a section bar assembly, which comprise a section bar body, a high-hardness steel long raceway, a sliding block base body, a ball returning device, a sliding chute, a sealing end cover, an end cover screw hole, a door opening, a ball working channel, a first threaded hole, a ball returning channel, a second threaded hole, a mounting seat, a fixing bolt, a connecting arc-shaped plate and an extension ring, a high-hardness steel long raceway is fixedly installed in the profile body, a sliding block base body is movably installed at the upper end of the profile body, a ball returning device is fixedly installed at one end of the sliding block base body, a sliding groove is fixedly formed in the ball returning device, a sealing end cover is fixedly installed at one end of the ball returning device, and an end cover screw hole is fixedly formed in the sealing end cover. A door opening is fixedly formed in the sliding block base body, a ball working channel is fixedly formed in one end of the door opening, a first threaded hole is fixedly formed in the upper end of the ball working channel, and a ball returning channel is fixedly formed in one end of the first threaded hole.

This utility model discloses a coal mine transportation and pushing device, specifically relating to the field of coal mine transportation technology. It includes a conveyor platform, with a support and adjustment device fixedly connected to the lower end of the conveyor platform. A base plate is fixedly connected to the lower end of the support and adjustment device. A fixed frame is fixedly connected to the upper right side of the conveyor platform, and a dust collection and filtering device is fixedly connected to the upper end of the fixed frame. The coal mine transportation and pushing device of this utility model can be flexibly adjusted by tilt angle, enabling the coal mine transportation equipment to combine high efficiency, safety, and economy. Coal mine roadways have varying slopes; the adjustable tilt angle allows the equipment to quickly match the roadway undulations, avoiding material accumulation or slippage due to incompatible slopes. The same equipment can adapt to different transportation needs through angle adjustment, reducing equipment model dependence. An appropriate tilt angle can accelerate the descent of materials using their own weight, reducing conveyor belt drive power and saving energy consumption. The tilt angle also helps materials flow smoothly, improving transportation continuity.

The utility model discloses a multi-motor driving type compact shelving moving column, a compact shelving moving column chassis is provided with at least two driving motors, at least two motor driving output shafts and at least two compact shelving chassis rollers, and the motor driving output shaft of each driving motor is respectively provided with a corresponding compact shelving chassis roller; when the two driving motors are adopted, the two driving motors, the corresponding motor driving output shafts and the compact shelving chassis rollers are respectively distributed at two end head areas close to the length direction of the compact shelving moving column; and when more than two driving motors are adopted, except that the two driving motors are respectively distributed and mounted at two end head areas close to the length direction of the movable column of the compact shelving, the other driving motors, the corresponding motor driving output shafts and the compact shelving chassis rollers are uniformly distributed and arranged at a position area between the two driving motors. Driving power of the driving motor can be reduced, working intensity of the driving motor is reduced, and working stability of the compact shelving moving column is improved.

The invention discloses a permanent magnet rotary pressurizing liquid metal conveying pump set which comprises a pipeline and at least two rotating mechanisms, each rotating mechanism comprises a rotor and a plurality of permanent magnets fixedly arranged on the periphery of the rotor, the permanent magnets are evenly distributed in the circumferential direction of the rotor, and N poles and S poles of the permanent magnets alternately point to the center of the rotor; the axes of the rotors of the at least two rotating mechanisms are parallel and arranged at intervals, the pipeline sequentially bypasses the permanent magnets of the rotating mechanisms, and the center line of the pipeline is located in a plane perpendicular to the axes of the rotors. Acting force is applied to liquid metal in the pipeline through the multiple rotating mechanisms, so that the pressurizing effect is achieved, and the problem of large-flow and large-lift conveying of the liquid metal is solved; meanwhile, a plurality of rotating mechanisms are combined with a pipeline winding mode, so that the driving power required by each stage of rotating mechanism is reduced, the efficiency is improved, a yoke can be omitted, the overall size of the device can be reduced, and the eddy current loss is reduced; and finally, the requirements of energy consumption, high pressure and large flow are met.

The utility model provides a self-adaptive transverse-moving suction nozzle for a cleaning and sweeping vehicle, which comprises a lifting frame, a suction nozzle, a suction nozzle and a suction nozzle, wherein the lifting frame is mounted on the bottom side of a corresponding vehicle body; the sliding frame is transversely connected with the lifting frame in a sliding manner and is driven by a transverse movement driving device to transversely move left and right; the top of the suction nozzle shell is connected with the sliding frame, the bottom of the suction nozzle shell is open, the partition piece is driven by an adjusting driving device to transversely move and is arranged in the suction nozzle shell, an inner cavity of the suction nozzle shell is divided into a left suction cavity and a right suction cavity by the partition piece, and the two suction cavities communicate with a garbage can and a suction device of the vehicle body through communicating assemblies capable of being movably opened and closed correspondingly; the transverse moving driving device can drive the sliding frame to drive the suction nozzle shell to transversely move, and the adjusting driving device can drive the partition piece to move towards the side with the large garbage amount so as to compress the suction cavity space of the side with the large garbage amount. Therefore, invalid airflow at the top of the suction cavity on the large garbage amount side or the garbage side is reduced through movement of the partition piece, and suction force is increased to quickly suck and pick up garbage.

A four-station automobile suspension durability test device includes a cast iron platform, a suspension mounting base, a suspension mounting assembly, a hydraulic servo actuator, an actuator mounting tailstock, a transmission assembly, and a suspension connecting assembly; wherein the suspension mounting base is mounted on the cast iron platform, and the suspension mounting assembly is mounted on the suspension mounting base; both sides of the suspension mounting assembly are used to mount the tested suspension assembly; the tail end of the hydraulic servo actuator is hinged to the actuator mounting tailstock, and the rod end of the hydraulic servo actuator is hinged to the transmission assembly; the actuator mounting tailstock and the transmission assembly are both mounted on the cast iron platform; one end of the suspension connecting assembly is connected to the tested suspension assembly, and the other end is connected to the transmission assembly, and the hydraulic servo actuator is driven to vertically actuate two groups of tested suspension assemblies on the same side through the transmission assembly and the suspension connecting assembly. The device can test four groups of suspensions at the same time, and can also perform durability tests on the double-sided suspensions of the same axle, with high testing efficiency.

The application discloses a non-isolated DC-DC converter based on a switched capacitor inductor and a control method. in The application discloses a non-isolated DC-DC converter based on a switched capacitor inductor, which comprises a direct-current voltage source V in , a first switch tube S1, a second switch tube S2, a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, a first inductor L1, a second inductor L2, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4 and an output load R0. The application connects capacitors in series between the direct-current voltage source and the output load, so that the non-isolated DC-DC converter has a voltage isolation effect and reliability is improved. Compared with other converters, the application has only two linear working modes, and operation is simple. Meanwhile, conduction loss is low, and the converter has high efficiency.

The present invention proposes an energy-saving butterfly valve, which relates to the technical field of butterfly valves. The energy-saving butterfly valve includes: a valve body and a valve plate. The inner surface of the valve body is provided with a curved area located in the center and a flat area located on both sides of the center; the thickness of the curved area gradually and continuously increases from the center of the valve body to both sides. The valve plate includes a valve plate body and a sealing structure directly provided on the valve plate body. The sealing structure is composed of at least three sealing elements. The highest points of at least three sealing elements are connected to form a peripheral sealing surface. The height of at least three sealing elements gradually decreases from the middle to both sides. The formed sealing structure is an axially symmetrical structure with a high middle area and a low peripheral area. The peripheral sealing surface is adapted to the curved area of ​​the valve body. The present invention cooperates with the valve plate through a curved valve body with a high middle area and low sides. When the fluid pressure is too large, the sealing performance of the valve plate is compensated during the movement of the valve plate. Within a certain range, the greater the pressure, the tighter the seal, and the compensation is bidirectional.

The present invention discloses a space-time adaptive processing method and system under the condition of array element error, which belongs to the field of remote sensing radar technology. The present invention adopts array radar and multiple airborne radars to achieve effective coverage of complex road conditions; adopts clutter driving mode, installs airborne radar on the road isolation belt opposite to realize the space-time spectrum of the above slope surface, and adopts filters for airborne radar and array radar, so that the coverage of driving signals can be extended very far, and the area of ​​airborne radar signals is driven by a monitor. A complete set of driving methods composed of array radar and airborne radar can effectively cover all road conditions at a very low cost, and the driving power of array radar and airborne radar is much lower than that of current mobile driving radar, and it adopts wind and solar clutter mode for power supply, does not rely on power system, and has global coverage of Beidou satellite, and can be deployed over a large area at low cost, and the airborne radar of aircraft can flexibly intervene in the area covered by the airborne radar, and quickly build an urban road early warning system.

The application discloses an atomizing device with a phonon lattice microstructure, which comprises a piezoelectric substrate, an interdigital transducer arranged on the surface of the piezoelectric substrate and a phonon lattice microstructure. The phonon lattice microstructure is arranged in front of the propagation direction of the surface acoustic wave emitted by the interdigital transducer. The phonon lattice microstructure comprises a plurality of lattice micro-units arranged in a lattice mode and a lattice micro-channel connected with the lattice micro-units. The lattice micro-units are uniformly arranged in the longitudinal and transverse directions along the propagation direction of the surface acoustic wave. The lattice micro-units are arranged as pits recessed on the surface of the piezoelectric substrate or bosses protruding from the surface. The lattice micro-channel and the lattice micro-units are both made of porous materials for permeating, transporting and storing atomized liquid. When the surface acoustic wave propagates to the phonon lattice microstructure, resonance is generated in the lattice micro-units. The surface of the lattice micro-units forms a liquid film and is further atomized. The surface acoustic wave can form resonance on the lattice micro-units, so that the energy of the surface acoustic wave is more efficiently coupled into the atomized liquid.

The invention discloses a low-inductance SiC module structure, comprising a substrate plate, a copper plate fixedly connected to the top of the substrate plate, an integrated circuit board arranged on the surface of the copper plate, a bracket fixedly connected to one side of the copper plate for use with the integrated circuit board, and an auxiliary mechanism is arranged so that the SiC module takes into account the advantages of high input impedance of MOSFET and low conduction voltage drop of GTR, and has the functions of low driving power and low saturation voltage drop, thereby reducing the energy consumption of the SiC module and further improving the operation performance of the SiC module. By arranging a positioning mechanism, a primary bolt fixing method is firstly adopted between the substrate plate, the copper plate and the packaging box, and then a secondary buckle fixing method is adopted between the substrate plate, the copper plate and the packaging box, so as to prevent the SiC module from being affected by the workplace and the environment and to provide protection for its internal components, and by arranging a cooling mechanism, an embedded cooling cycle method is adopted to quickly carry and dissipate the heat generated by the integrated circuit board and other components on the copper plate.

The present invention discloses a leather laser marking machine, comprising: a marking machine body, provided with a working space; a laser head assembly, used for marking the leather in the working space; a feeding structure, used for placing a feeding roll; a first roller structure, used for conveying the leather of the feeding structure into the working space; a wetting and cleaning structure, used for wetting the leather in the first roller structure; a receiving structure, used for receiving the marked leather; a second roller structure, used for conveying the marked leather to the receiving structure, provided with a working area; wherein a driving mechanism is provided in the feeding structure. In the above manner, the leather laser marking machine disclosed in the present invention is provided with a wetting and cleaning structure, which can wet and clean the leather, and improve the leather marking effect; the feeding roll of the feeding structure can be slidably arranged, and the position of the feeding roll can be adjusted to realize the deviation correction of the leather; a working area is also provided, and maintenance can be carried out without stopping the machine, and work efficiency is effectively guaranteed.

The metering pump energy-saving transmission mechanism with the auxiliary spring comprises a connecting rod arranged in a pump shell, one end of the connecting rod is connected with a diaphragm assembly in a pump head in a matched mode, the other end of the connecting rod is matched with a driving assembly in a pump body, and the end, connected with the diaphragm assembly, of the connecting rod is sleeved with an elastic assembly. The elastic assembly comprises a spring seat, a spring and an adjusting seat, and the spring seat is matched and fixed with the pump shell; the adjusting seat is matched and fixed with the connecting rod; and one end of the spring is fixed with the spring seat, and the other end of the spring is fixed with the adjusting seat. The pump shell does not need to be filled with oil to be matched with reciprocating motion of the connecting rod, and the overall structure is simplified; the elastic assembly is arranged on the connecting rod close to the diaphragm assembly, one end of the elastic assembly is fixed to the pump shell, the other end of the elastic assembly is fixed to the connecting rod, when the connecting rod reciprocates, the elastic assembly moves along with the connecting rod, elastic pre-tightening force is formed, movement of the connecting rod is promoted, the driving power of the transmission mechanism can be reduced, and the use power of the motor is reduced.

The utility model discloses a low-power-driven wet brake system which comprises a double pump, a prefill valve, a brake valve, a drive axle, an energy accumulator and a hydraulic oil tank. The duplex pump comprises an oil pump I and an oil pump II; oil inlets of the first oil pump and the second oil pump are connected with the interior of the hydraulic oil tank, an oil outlet of the second oil pump is connected with a cooling oil inlet b1 and a cooling oil inlet b2 of the drive axle, an oil outlet of the first oil pump is connected with an oil inlet of the prefill valve, and a flushing oil port N of the prefill valve is connected with an oil outlet of the second oil pump and the cooling oil inlet b1 and the cooling oil inlet b2 of the drive axle. A liquid filling oil port S1 of the liquid filling valve is connected with the energy accumulator and an oil inlet P of the brake valve, an oil outlet A of the brake valve is connected with a brake oil port a1 and a brake oil port a2 of the drive axle, and an oil outlet c1 and an oil outlet c2 of the drive axle are communicated with the interior of the hydraulic oil tank. According to the utility model, the normal function can be realized, the load of a system power source can be effectively reduced, and the driving power is reduced.

This invention discloses an upper sealing assembly and an annular cooler, relating to the field of annular cooler technology. Its main purpose is to avoid sealing deformation and leakage problems caused by the water tank's inability to hold enough water due to the movement of the trolley sideboard. The main technical solution of this invention is as follows: The upper sealing assembly is used in an annular cooler, which includes a sealing cover, a trolley sideboard, and a rotating frame. The sealing cover is disposed above the trolley sideboard, and the trolley sideboard is fixed relative to the rotating frame. The upper sealing assembly includes a water tank and an insert plate. The water tank is disposed on the side wall of the sealing cover, and the insert plate is fixed relative to the trolley sideboard, with at least a portion of the insert plate inserted into the water tank.

The invention relates to a carding machine having a feed side for fiber bundles, wherein the carding mechanism is configured to deliver the fiber bundles to a rotating cylinder (4) by means of at least one licker-in (3a, 3b, 3c), wherein the fiber bundles are opened into individual fibers, aligned and cleaned between stationary carding elements and surrounding flat strips (17) and the cylinder (4), and the fiber web produced there can be transferred from the cylinder (4) to a doffer (5), downstream of which a device for converting the fiber web into a fiber sliver is arranged. The invention is characterized in that the diameter of the cylinder (4) is at least 1300 mm and the difference between the front heel and the rear heel (Fv-Fh) of the wire (17a) of the flat strips (17) over a width of 20 mm is less than 12 / 1000" [inches] relative to the spacing of the wire of the cylinder (4).

The invention discloses a double-path pulse counting-based low-power-consumption self-checking bubble sensor, which comprises a control chip MCU (Microprogrammed Control Unit) module, a double-pulse ultrasonic wave generation driving circuit, an ultrasonic wave transmitting terminal, an ultrasonic wave receiving terminal, a signal amplification circuit and a signal comparator, and is characterized in that the control chip MCU module is connected with the double-pulse ultrasonic wave generation driving circuit; the double-pulse ultrasonic generation driving circuit is connected with the ultrasonic transmitting terminal, the ultrasonic transmitting terminal and the ultrasonic receiving terminal are oppositely arranged, the ultrasonic receiving terminal is connected with the signal amplifying circuit, the signal amplifying circuit is connected with the comparator, and the comparator is connected with the control chip MCU module. By adopting the technical scheme, the low-power-consumption self-checking bubble sensor and method based on double-path pulse counting have the advantages of low power consumption, high real-time performance, self-checking function, high accuracy and product miniaturization.