36results about How to "Improve force balance" patented technology

A peristaltic pump includes a conduit having a first end for receiving a fluid from a reservoir and a second end for delivering the fluid. A plurality of fingers are disposed at respective locations along a segment of the conduit and are configured to alternately compress and release the conduit at the locations. A cyclical pump mechanism is coupled to move the fingers between respective compressed and released positions in a spatio-temporal pattern so as to drive a predetermined quantity of the fluid through the segment of the conduit in each pump cycle. A motor is coupled to drive the pump mechanism. A controller is coupled to activate and deactivate the motor in alternation during each pump cycle with a duty cycle that varies within the pump cycle.

A peristaltic pump includes a conduit having a first end for receiving a fluid from a reservoir and a second end for delivering the fluid. A plurality of fingers are disposed at respective locations along a segment of the conduit and are configured to alternately compress and release the conduit at the locations. A cyclical pump mechanism is coupled to move the fingers between respective compressed and released positions in a spatio-temporal pattern so as to drive a predetermined quantity of the fluid through the segment of the conduit in each pump cycle. A motor is coupled to drive the pump mechanism. A controller is coupled to activate and deactivate the motor in alternation during each pump cycle with a duty cycle that varies within the pump cycle.

A balance-enhancing and vibration-reducing device is incorporated in a wrist exerciser to enhance force balance and reduce vibration caused in the operation of the wrist exerciser. The device includes a ring mounted in a casing of the wrist exerciser and defining diametrically opposite holes that rotatably receive axles of a rotor of the wrist exerciser. A coupler is mounted to an inner circumference of the ring in position corresponding to at least one of the holes. The coupler includes a tube extending in a radial direction of the ring. The tube forms a central bore to rotatably receive the corresponding axle. A plurality of resilient pawls is formed at a free end of the tube and distributed along a circumference of the free end. A balance-enhancing and vibration-reducing element has a central bore fit over the tube of the coupler by elastically deforming the pawls. The pawls so deformed resume their original position by the resiliency thereof to retain the balance-enhancing and vibration-reducing element on the tube. The balance-enhancing and vibration-reducing element effects weight balance and absorption of mechanical vibration force during the rotation of the rotor thereby maintaining stable and noiseless operation of the wrist exerciser.

A balance-enhancing and vibration-reducing device is incorporated in a wrist exerciser to enhance force balance and reduce vibration caused in the operation of the wrist exerciser. The device includes a ring mounted in a casing of the wrist exerciser and defining diametrically opposite holes that rotatably receive axles of a rotor of the wrist exerciser. A coupler is mounted to an inner circumference of the ring in position corresponding to at least one of the holes. The coupler includes a tube extending in a radial direction of the ring. The tube forms a central bore to rotatably receive the corresponding axle. A plurality of resilient pawls is formed at a free end of the tube and distributed along a circumference of the free end. A balance-enhancing and vibration-reducing element has a central bore fit over the tube of the coupler by elastically deforming the pawls. The pawls so deformed resume their original position by the resiliency thereof to retain the balance-enhancing and vibration-reducing element on the tube. The balance-enhancing and vibration-reducing element effects weight balance and absorption of mechanical vibration force during the rotation of the rotor thereby maintaining stable and noiseless operation of the wrist exerciser.

Disclosed is a snap fastener, comprising a face fastener (1) and a locating fastener (2) which are snapped with each other, wherein the face fastener (1) comprises a face shell (11) provided with an installation chamber (111), and a locating pin (12) made of plastic and integrally formed; and the locating pin (12) comprises a base (121), a rod body (122) and anti-rotation protrusions (125). In the implementation of the snap fastener of the present invention, the face fastener (1) can be separated into the face shell (11) and the locating pin (12), and the locating pin (12) is manufactured into a standard part for batch production and storage, thereby adapting face shells (11) with continuously updated designs, shortening delivery time, and reducing costs.

A flow control system for a fuel injector for an internal combustion engine is provided and includes an inlet port, an outlet, a return port, a 2-way control valve including a control valve member, a shuttle valve and a main valve. The control valve includes a first seat, a first resilient arrangement configured to force the control valve member towards the seat so as to close the control valve, and a first abutment that limits the lift of the control valve member away from the first seat. The first seat of the control valve is slidably arranged in the shuttle control chamber. An end stop for the first seat is provided such that the pressure in a shuttle control chamber tends to move the first seat towards the end stop. The first seat, upon its mechanical contact with a valve member is able to transmit at least a part of the force of the resilient means onto a shuttle valve body in the opening direction of the shuttle valve.

The invention relates to chemical machinery, in particular to solid waste treatment equipment and an application. The solid waste treatment equipment comprises a long barrel-shaped shell which is horizontally arranged, wherein an inlet is formed in one end of the long barrel-shaped shell, and an outlet is formed in the other end of the long barrel-shaped shell; a spiral rotating shaft is arranged along the axial direction of the long barrel-shaped shell, more than one longitudinal stirring rods which are perpendicular to the spiral rotating shaft are arranged on one side, which is near the inlet, of the spiral rotating shaft, and more than one transverse stirring rods which are parallel to the spiral rotating shaft are arranged on one side, which is near the outlet, of the spiral rotating shaft; and an upper shell which can be opened is arranged on the upper part of the long barrel-shaped shell, and more than one through holes are formed in the upper shell. The solid waste treatment equipment is put in a flat-top tunnel brick kiln, high temperature in the flat-top tunnel brick kiln is utilized to treat solid waste in the solid waste treatment equipment, the spiral rotating shaft is rotated, the solid waste is stirred by the longitudinal stirring rods, so as to evaporate moisture, and the solid waste is stirred by the transverse stirring rods, so as to loosen the solid waste. According to the solid waste treatment equipment, the treatment of the solid waste can be promoted, and gas can be effectively exported.

The invention provides a cooking utensil and an upper cover of the cooking utensil. The upper cover of the cooking utensil comprises an upper face cover, a first actuation part, a material discharge cavity door and a second actuation part, wherein the upper face cover is provided with a washing cavity body, and the washing cavity body is provided with a material discharge hole for discharging materials; the first actuation part is arranged on the upper face cover; the material discharge cavity door can cover the material discharge hole, or can translate in a plane vertical to the central axisof the material discharge hole to be separated from the material discharge hole, so that the material discharge hole is open; the second actuation part is fixed on the material discharge cavity door,is used for realizing actuation and fixing with the first actuation part when the material discharge cavity door covers the material discharge hole, and is separated from the first actuation part whenthe material discharge cavity door is separated from the material discharge hole. For the upper cover of the cooking utensil provided by the technical scheme, by utilizing the actuation and fixing ofthe first actuation part and the second actuation part, the stable covering of the material discharge cavity door with the material discharge hole can be guaranteed, and meanwhile, the purposes of reducing driving energy consumption and reducing fatigue damage of a power device are achieved.

The invention discloses an easily-rotating ship horn roller fair lead. The easily-rotating ship horn roller fair lead comprises a fixing base, a plurality of locating holes are arranged on the fixing base, the fixing base is further provided with a locating bump, a rotating body is arranged on the locating bump in a sleeved mode, a plurality of rolling balls are arranged between the rotating body and the fixing base, the rotating body horizontally rotates on the rolling balls around the locating bump, the top of the rotating body is fixedly connected with a ship horn roller, the top of the ship horn roller is provided with an anti-dropping flange, and a top cover is arranged on the anti-dropping flange. The easily-rotating ship horn roller fair lead changes the traditional axial rotation of a bearing connection into the horizontal rolling of the rolling balls on a plane, so that the stress balance on the rolling balls is greatly improved, the friction force on the rotating body in the rotation process is decreased, and the ship horn roller rotates more steadily and smoothly.

The invention relates to a double-supported submersible water impeller comprising a submersible water impeller main body, a lifting device and two supporting sliding rails, wherein the lifting device is fixed on the surface of a pool through a pool surface mounting foundation; the two supporting sliding rails are vertically fixed at the bottom of the pool through a pool bottom mounting foundation; the top ends of the two supporting sliding rails are pulled and connected to the pool surface mounting foundation through connecting rods; mounting seats are penetrated and fixed on the two supporting sliding rails and are provided with two brackets back and forth along the direction vertical to the direction of the supporting sliding rails; and the submersible water impeller main body is hung and connected to the lifting device through a steel wire rope and is in a state of being respectively supported on the two brackets after lifting along the vertical direction of the supporting sliding rails or falling to the front and rear ends of the axial direction of the submersible water impeller main body. By using the double-supported submersible water impeller, the technical problems of high underwater vibration, high noise and short service life of an impeller are thoroughly solved; and the double-supported submersible water impeller is stable in working, reliable in operation and simple in maintenance.

The invention discloses a multi-stage compressed gas engine, which comprises an impeller and at least one impeller chamber where the impeller is installed. The impeller includes a first impeller and a second impeller. The side plates on both sides between the teeth form a plurality of working chambers, and the inner surface of the impeller chamber where the impeller is installed and the working chambers form a plurality of air chambers that can be relatively sealed to inject gas. The first compressed gas injection hole and the first compressed gas discharge hole are correspondingly opened on the impeller chamber of the first impeller, and the second compressed gas injection hole and the second compressed gas discharge hole are correspondingly opened on the impeller chamber where the second impeller is installed. , the output of the first compressed gas injection hole is connected to the second compressed gas injection hole. The invention also discloses a motor vehicle equipped with the compressed gas engine. By adopting the invention, the energy utilization efficiency of compressed air can be fully improved.

The invention provides a sludge treatment device comprising a hollow shell, the shell is provided with: a sludge input pipeline, a filter pressing device, a hydraulic machine, a conveying belt and a collecting box, wherein the filter pressing device comprises an extrusion bin, two oppositely-opened movable doors are arranged at the upper portion and the bottom of the extrusion bin respectively, containing spaces for liquid to flow are formed in the middles of the movable doors, filter plates are arranged on the sides facing the interiors of the extrusion bins, and blow-off pipes for discharging internal liquid are arranged in the containing spaces; a plurality of extrusion plates are arranged in the extrusion bin side by side, the extrusion plates are movably connected through connecting plates, and hydraulic machines are arranged on the two sides, opposite to the extrusion bin, of the shell and extend into the shell and the extrusion bin through hydraulic rods to be connected with theadjacent extrusion plates. The conveying belt is located below the extrusion bin, and the collecting box is used for receiving sludge and liquid falling from the upper portion. By means of the hydraulic machines symmetrically installed on the two sides, extrusion power can be improved, thrust can be kept balanced, the overall structure cannot be affected, and the final sludge water content is only 40%-60%.

The invention relates to a jack quick adjusting method in bridge four-point jacking construction. The method comprises the following steps: step 1, determining bridge jacking position precision requirements and jacking force balancing requirements; step 2, adjusting the jacking distances of four jacks so as to enable a bridge to reach a target height; step 3, judging whether the jacking forces of the jacks meet force balancing requirements or not; step 4, adjusting the jacking forces of the jacks so as to meet the force balancing requirements; step 5, judging whether the bridge meets position precision requirements or not after adjustment. The jack quick adjusting method provided by the invention ensures that repeated adjustments by constructors during bridge jacking construction can be avoided, and the construction efficiency is improved; a jacking construction way taking bridge position precision as a single indicator is improved, with the consideration to bridge jacking position precision and balance to the jacking force of the four jacks, the stress condition of the bridge is improved, risks of damages to a bridge support, caused by unbalanced stress, can be reduced, and the service life of the bridge is prolonged.

The invention discloses a boom rack and a dynamic compaction machine. The boom rack comprises a truss boom, a support rod and a tensioning mechanism, wherein the bottom end of the support rod is connected with the truss boom; one end of the tensioning mechanism is connected with a boom tail of the truss boom; the other end of the tensioning mechanism is supported by the support rod and is connected with a boom head of the truss boom; the support rod and the tensioning mechanism are arranged on the side, far from a crane, of the truss boom. The boom rack provided by the invention has the advantages of high carrying capacity and long service life.

A rotating electric machine has a drive control part and a motor having a stator and a rotor. The drive control part has an external disturbance voltage instruction generation part, a switching signal generation part, first and second drive circuits, a current acquisition part detecting an external disturbance current flowing in three phase winding in each of a first coil and a second coil of the stator, and a phase angle estimation part detecting a phase angle of the rotor of the motor based on the detected external disturbance current. The drive control part adjusts turn-on / turn-off timings of switching signals so as to reduce a timing difference between corresponding line external disturbance voltages in the three phase windings more than the time difference without performing the timing adjustment while maintaining a duty ratio of these line external disturbance voltages to that when the timing adjustment is not performed.

The invention belongs to the technical field of liquid crystal display, and particularly discloses a PCBA assembly assembling method, an assembling jig and a PCBA assembly. The assembling method comprises the steps of providing a PCB, a radiator and an IPM module; arranging the IPM module on the PCB in an inserted mode; pressing the radiator on the side, which is away from the PCB, of the IPM module; locking the PCB and the radiator by adopting a first locking screw; locking the radiator and the IPM module by adopting a second locking screw; and welding the IPM module and the PCB. The assembling jig is applied to the PCBA assembly assembling method, and the PCBA assembly is formed by adopting the PCBA assembly assembling method. According to the PCBA assembly assembling method, the assembling jig and the PCBA assembly provided by the invention, the assembling efficiency of the PCBA assembly can be improved, and the stress risk after the PCBA assembly is assembled is reduced.

Disclosed is a snap fastener, comprising a face fastener (1) and a locating fastener (2) which are snapped with each other, wherein the face fastener (1) comprises a face shell (11) provided with an installation chamber (111), and a locating pin (12) made of plastic and integrally formed; and the locating pin (12) comprises a base (121), a rod body (122) and anti-rotation protrusions (125). In the implementation of the snap fastener of the present invention, the face fastener (1) can be separated into the face shell (11) and the locating pin (12), and the locating pin (12) is manufactured into a standard part for batch production and storage, thereby adapting face shells (11) with continuously updated designs, shortening delivery time, and reducing costs.

The invention discloses an antistripping composite aluminum veneer, and belongs to the field of plates. The antistripping composite aluminum veneer comprises two aluminum plates and a filling core layer arranged between the two aluminum plates in a clamped manner, and an adhesive layer is arranged between the filling core layer and each aluminum plate; and the inner wall of each aluminum plate isprovided with multiple grooves and / or protrusions, and the surface of each groove and / or protrusion is shaped like a spherical surface. According to the antistripping composite aluminum veneer, not only can the antistripping property of the composite aluminum veneer be improved, but also the effect of improving the structural strength is achieved.

The invention discloses a laminated lithium battery cell and lamination equipment. The laminated lithium battery cell comprises an anode isolating membrane, an anode pole piece, a cathode isolating membrane and a cathode pole piece which are arranged in sequence, wherein the anode pole piece and the cathode pole piece are arranged at an interval, the anode isolating membrane, the anode pole piece, the cathode isolating membrane and the cathode pole piece form a whole and are wound into a cylinder structure, and the cylinder structure is wound into a cylindrical structure; the winding tail end of the anode pole piece is provided with an anode lug, the winding tail end of the cathode pole piece is provided with a cathode lug, the lamination equipment comprises a back plate, a rotating disc, a lamination winding needle, a blanking winding needle, a compression roller, an anode isolating membrane, an anode pole piece conveying belt, a cathode isolating membrane and a cathode pole piece conveying belt, one end of the anode isolating membrane and one end of the cathode isolating membrane are wound on the lamination winding needle, and the other end of the cathode isolating membrane is wound on the blanking winding needle; and electromagnetic sheet clamping jaws for clamping the cathode pole piece and the anode pole piece are respectively arranged above the cathode pole piece conveying belt and the anode pole piece conveying belt. According to the laminated lithium battery cell and the lamination equipment provided by the invention, the winding needle is used for carrying out winding type lamination assembly on the cathode and anode pieces, so the efficiency is greatly improved.

The invention relates to an electrically-driven pipeline plugging device which comprises a steering assembly and a plugging assembly, the steering assembly comprises a first supporting rod, a steering sliding ring and a steering push-pull rod, the plugging assembly comprises a second supporting rod, an expansion ring, a left sealing cover and a right sealing cover, and the second supporting rod is provided with a left sliding ring and a right sliding ring. A plugging transmission mechanism enabling the left sliding ring and the right sliding ring to slide reversely is arranged in the second supporting rod, the expansion ring is formed by combining a first arc-shaped piece and a second arc-shaped piece, guide faces are arranged at the two ends of the first arc-shaped piece, sliding grooves are formed in the guide faces, and guide holes are formed in the side walls of the sliding grooves. The second arc-shaped piece is hinged to the left sliding ring and the right sliding ring through symmetrically-distributed connecting rods, the second arc-shaped piece is provided with a sliding block matched with the sliding groove, guide columns located in the guide holes are arranged on the two sides of the sliding block, the two ends of the left sealing cover are correspondingly connected with the left sliding ring and the expansion ring, and the two ends of the right sealing cover are correspondingly connected with the right sliding ring and the expansion ring. The device has the advantages of being compact in structure, easy to control and sensitive in action.

The invention relates to the technical field of segmented girder lifting devices, in particular to a segmented girder lifting device. The segmented girder lifting device comprises a transverse frame,a first support and a second support; a second fixing block is arranged in the middle of the transverse frame, a pull ring is arranged at the upper end of the second fixing block, and a first hook isarranged at the lower end of the second fixing block; first fixing blocks are fixedly welded to the upper end of the first support and the upper end of the second support respectively; and stretchingassemblies are arranged on the first support and on the second support respectively. The segmented girder lifting device is reasonable in structural design; when a segment girder needs to be hoisted,the device is wound on the segmented girder through ropes, then the ropes are stretched by the stretching assemblies on the first and second supports and the first hook at the lower end of the secondfixing block, finally the transverse frame is stretched through a hoisting machine, and then the segmented girder is lifted; and due to the fact that multiple stretching points are arranged on the ropes, the stress balance of the segmented girder in the hoisting process and the stability during ascending are improved.

A variable section nozzle includes an ejection casing and a plurality of internal flaps arranged in a ring downstream from the ejection casing. Each internal flap is connected to the ejection casing by a movable lever pivotally mounted to the downstream end of the ejection casing. Each lever is movable between a first position in which the internal flaps are in a high position and a second position in which the internal flaps are in a folded-down position. The nozzle includes a plurality of rigid movement transmission parts distributed circumferentially around the ejection casing. Each rigid movement transmission part is connected to two adjacent levers by connecting rods, and to a control actuator. Each rigid movement transmission part can move in a direction corresponding to the axial direction of the nozzle under the action of the control actuator to move the adjacent levers between the first and second positions.

A flow control system for a fuel injector for an internal combustion engine is provided and includes an inlet port, an outlet, a return port, a 2-way control valve including a control valve member, a shuttle valve and a main valve. The control valve includes a first seat, a first resilient arrangement configured to force the control valve member towards the seat so as to close the control valve, and a first abutment that limits the lift of the control valve member away from the first seat. The first seat of the control valve is slidably arranged in the shuttle control chamber. An end stop for the first seat is provided such that the pressure in a shuttle control chamber tends to move the first seat towards the end stop. The first seat, upon its mechanical contact with a valve member is able to transmit at least a part of the force of the resilient means onto a shuttle valve body in the opening direction of the shuttle valve.

The invention relates to a double-supported submersible water impeller comprising a submersible water impeller main body, a lifting device and two supporting sliding rails, wherein the lifting device is fixed on the surface of a pool through a pool surface mounting foundation; the two supporting sliding rails are vertically fixed at the bottom of the pool through a pool bottom mounting foundation; the top ends of the two supporting sliding rails are pulled and connected to the pool surface mounting foundation through connecting rods; mounting seats are penetrated and fixed on the two supporting sliding rails and are provided with two brackets back and forth along the direction vertical to the direction of the supporting sliding rails; and the submersible water impeller main body is hung and connected to the lifting device through a steel wire rope and is in a state of being respectively supported on the two brackets after lifting along the vertical direction of the supporting sliding rails or falling to the front and rear ends of the axial direction of the submersible water impeller main body. By using the double-supported submersible water impeller, the technical problems of high underwater vibration, high noise and short service life of an impeller are thoroughly solved; and the double-supported submersible water impeller is stable in working, reliable in operation and simple in maintenance.

The invention relates to the technical field of segmental beam hangers, and specifically discloses a segmental beam hanger, which includes a horizontal frame, a first bracket, and a second bracket; The upper end is provided with a pull ring, and the lower end of the second fixed block is provided with a first hook; the upper end of the first bracket and the upper end of the second bracket are welded and fixed with the first fixed block; the first bracket and the second bracket are equipped with There are tensile components; the structural design of the segmental beam spreader is reasonable. When the segmental beam needs to be hoisted, the rope is wound on the segmental beam, and then the tensile component on the first bracket and the second bracket The stretching assembly on the top and the first hook at the lower end of the second fixed block stretch the rope at the same time, and finally the horizontal frame is stretched by the hoisting machine, and then the segmental beam is hoisted; since there are multiple stretching points for the rope , thereby improving the force balance of the segmental beam during the hoisting process and the stability when it is raised.

The invention relates to a jack quick adjusting method in bridge four-point jacking construction. The method comprises the following steps: step 1, determining bridge jacking position precision requirements and jacking force balancing requirements; step 2, adjusting the jacking distances of four jacks so as to enable a bridge to reach a target height; step 3, judging whether the jacking forces of the jacks meet force balancing requirements or not; step 4, adjusting the jacking forces of the jacks so as to meet the force balancing requirements; step 5, judging whether the bridge meets position precision requirements or not after adjustment. The jack quick adjusting method provided by the invention ensures that repeated adjustments by constructors during bridge jacking construction can be avoided, and the construction efficiency is improved; a jacking construction way taking bridge position precision as a single indicator is improved, with the consideration to bridge jacking position precision and balance to the jacking force of the four jacks, the stress condition of the bridge is improved, risks of damages to a bridge support, caused by unbalanced stress, can be reduced, and the service life of the bridge is prolonged.

The present invention relates to the field of ore crushing equipment, and specifically discloses a pair of crusher rollers and an industrial stone crusher. A plurality of ring-shaped rolling parts are set on the outer peripheral side of the rotating roller, and the multiple rolling parts are sequentially connected with each other. Form a rolling surface. In the long-term mine work, when there are pits, deformations and other defects on the surface of the rolling parts, the user can disassemble and replace the corresponding single rolling parts separately, which improves the material utilization rate and avoids the entire replacement. The problem of high cost caused by the roll body. Through multiple split rolling parts, the user can replace the corresponding defective rolling parts separately when replacing the rolling parts, avoiding the difficulty of disassembly and installation caused by the overall disassembly of the roller body, which is convenient for users Maintenance and repair of the roller body, especially in the harsh working environment of mining machinery, the crusher roller has the characteristics of simple structure and easy replacement, which makes it easy for users to replace and maintain the rolled parts during the work process, and improve work efficiency .

The invention relates to chemical machinery, in particular to solid waste treatment equipment and an application. The solid waste treatment equipment comprises a long barrel-shaped shell which is horizontally arranged, wherein an inlet is formed in one end of the long barrel-shaped shell, and an outlet is formed in the other end of the long barrel-shaped shell; a spiral rotating shaft is arranged along the axial direction of the long barrel-shaped shell, more than one longitudinal stirring rods which are perpendicular to the spiral rotating shaft are arranged on one side, which is near the inlet, of the spiral rotating shaft, and more than one transverse stirring rods which are parallel to the spiral rotating shaft are arranged on one side, which is near the outlet, of the spiral rotating shaft; and an upper shell which can be opened is arranged on the upper part of the long barrel-shaped shell, and more than one through holes are formed in the upper shell. The solid waste treatment equipment is put in a flat-top tunnel brick kiln, high temperature in the flat-top tunnel brick kiln is utilized to treat solid waste in the solid waste treatment equipment, the spiral rotating shaft is rotated, the solid waste is stirred by the longitudinal stirring rods, so as to evaporate moisture, and the solid waste is stirred by the transverse stirring rods, so as to loosen the solid waste. According to the solid waste treatment equipment, the treatment of the solid waste can be promoted, and gas can be effectively exported.

A rotating electric machine has a drive control part and a motor having a stator and a rotor. The drive control part has an external disturbance voltage instruction generation part, a switching signal generation part, first and second drive circuits, a current acquisition part detecting an external disturbance current flowing in three phase winding in each of a first coil and a second coil of the stator, and a phase angle estimation part detecting a phase angle of the rotor of the motor based on the detected external disturbance current. The drive control part adjusts turn-on / turn-off timings of switching signals so as to reduce a timing difference between corresponding line external disturbance voltages in the three phase windings more than the time difference without performing the timing adjustment while maintaining a duty ratio of these line external disturbance voltages to that when the timing adjustment is not performed.