93results about How to "Reduce inertia force" patented technology

A piston assembly (12) comprising a reciprocating sleeve (14) incorporating an integral internal piston surface (28), which sleeve is slidably mounted upon a cylinder head (18) so as to define a piston chamber (26) therewith, the piston chamber being sealed in the vicinity of the cylinder head (18) by a circumferential static seal (20) that acts to seal against the reciprocating sleeve (14). The static seal (20) may occupy a horizontal plane and may include sacrificial wear zones and be formed from a graphite-based material. The piston assembly may be an oversquare assembly for use in an oil-free environment for processing high temperature gases, for example, a hot gas engine or heat pump or heat engine such as may be used in an energy storage system.

A main shaft apparatus (10) of a built-in motor system, wherein a rotary shaft (12) is provided with: a first cylindrical component (71) made of metal material; and a second cylindrical component (72) made of carbon fibre composite material, which is positioned on the outer peripheral surface of the first cylindrical component (71) and into the outer peripheral surface of which a rotor (20) fits. By virtue of this, the temperature increase of the rotary shaft and a bearing due to the heat produced by the rotor can be controlled and processing precision can be improved.

The invention discloses a zero-force control method of a mechanical arm facing the direct demonstration. The zero-force control method of the mechanical arm facing the direct demonstration comprises the steps of S1, building an n-degree-of-freedom mechanical arm dynamic model with n flexible joints; S2, building a controller of the mechanical arm, wherein the controller is used for carrying out gravity compensation and reducing the influences of an inertia force and a friction force on the flexible joints; and S3, identifying a gravity term in the controller. According to the control method provided by the invention, not only can the gravity of the mechanical arm be compensated, but also the influences of inertia forces and friction forces of the joints can be reduced, and the method is simple, less in calculation amount, and convenient to implement.

The present invention discloses a linear oscillation motor for a direct drive pump based on selfshield characteristic of Halbach array, which comprises the following components: a cylindrical outer stator, an inner rotor, permanent magnets, a supporting shaft, a coil winding, a linear bearing, resonance springs and an end cap. The inner rotor is provided in the outer stator. The inner wall of theouter stator is circumferentially provided with coil winding grooves. The inner rotor can perform oscillation motion in the outer stator. The outer wall of the inner rotor is provided with permanent magnets which are arranged according to a Halbach array arrangement mode. The inner part of the inner rotor is provided with the supporting shaft. Two ends of the supporting shaft are fixed with two ends of the outer stator through end caps. The linear bearing and two resonance springs are sleeved on the supporting shaft. The two resonance springs are provided at two ends of the linear bearing. The resonance springs and the linear bearing are relatively fixed with the inner rotor. After one end of the inner rotor passes through the end cap at the same end, connection with an outer executing mechanism through a spherical hinge joint. The linear oscillation motor has the following advantages: large output force in an axial direction, high utilization rate and compact integral structure.

A numerical control (NC) processor with an onboard grinding unit is disclosed in which a workpiece is first cut in a preselected contour with a Y-axis cutting tool, and then subjected to honing operation intact whereby both the cutting and honing operations can be performed with just a single processor with high-speed, high-acceleration. With the NC processor, the Y-axis cutting tool is mounted on a sliding base above an X-axis table in a way allowed to move back and forth in a Y-axis direction, while a grinding unit is installed in close proximity to the sliding base. A slider moves back and forth in synchronized relation with rotation of a work spindle to first let the Y-axis cutting tool cut the workpiece into a preselected contour, and then cause a buffing material of the grinding unit to grind a work surface of the workpiece into a high-quality surface finish in conformity with a programmed contour while the workpiece remains held intact in a chucking device.

The invention relates to a linear motor for a pump. The linear motor adopts a moving-iron type symmetrical structure, and two groups of coils serve as stators and are symmetrically distributed on two sides of a permanent magnet active cell. The stator coils of the motor is connected to a three-phase alternating current power supply and produces a specific traveling wave magnetic field, the active cell produces axial pushing force relative to the stators under the effect of the traveling wave magnetic field, the direction of pushing forced produced by two stators and the active cell are consistent under the effect of the traveling wave magnetic field, and the active cell directly acts energy on a plunger rod to enable the plunger rod to perform reciprocating motion along a guide rail. The linear motor for the pump achieves output of large pushing force, improves the effective pushing force and work efficiency and is suitable for driving of a plunger pump with high and medium voltage and large flow.

This invention relates to an impeller for data acquisition in a flow. It comprises blades (1) and a hub (2). It is made of a plastic material and it is insert moulded by trapping a spindle (3) and at least one magnet (4) in its hub (2). Application particularly for data acquisition in hydrocarbon wells.

The present invention relates to technological scheme of collision-resisting safety protection system for motor vehicle, and belongs to the field of passive safety protection technology for motor vehicle. The protector of the present invention is mounted in front and back of the vehicle and stretched beyond the vehicle for some length. During collision with other vehicle or other body, the present invention changes the hard point or line contact into soft planar contact and changes the force directly on the vehicle into varying elastic force, acting like one elastic soft cushion between the vehicle and other body. The present invention provides also automatic braking system. The present invention change the impact kinetic energy and impact force fast into compression, friction, expansion, pressure raising, etc. of rubber, gas, etc. to reduce the harm of collision to both human body and vehicle.

An internal combustion engine connecting rod, having an embodiment defining a hollow beam member and a process of manufacture are disclosed. The improvement substantially reduces beam tensile and compressive stress levels through application of elliptical and convex segment profile beam sections, conserving reciprocating and rotating connecting rod weight required in high performance engine applications.

An internal combustion engine connecting rod, having an embodiment defining a hollow beam member and a process of manufacture are disclosed. The improvement substantially reduces beam tensile and compressive stress levels through application of elliptical and oval beam sections, conserving reciprocating and rotating connecting rod weight required in high performance engine applications.

A beating device for a loom includes a plurality of rocking shafts disposed distant from each other in a width direction of cloth to be woven by the loom; a balance shaft disposed farther away from a reed than the rocking shafts and extending in said width direction, the balance shaft being disposed between the neighboring rocking shafts; and a pair of connection units for respectively connecting two opposite ends of the balance shaft with ends of the neighboring rocking shafts. The balance shaft is non-circular in cross-section such that a rocking-direction flexural-rigidity of the balance shaft is greater than a flexural-rigidity of the balance shaft in a direction perpendicular to the rocking direction.

A steering assist device includes: a steering torque detector; a steering operation amount acquisition device; an electric power steering device; and a control device configured to calculate a target control current of the electric power steering device, to supply the control current corresponding to the target control current to the electric power steering device, to determine a situation of steering operation of a driver, and to make a current component corresponding to the target inertia compensation assist torque in the target control current smaller when it is determined that the steering operation is turn-back steering with acceleration and deceleration than when it is determined that the steering operation of the driver is not the turn-back steering with acceleration and deceleration.

To place a muffler in a front area to make it suitable for an off-road motorcycle, A down frame extending downward obliquely from a head pipe ahead of an engine and a lower frame connected with its lower end, extending backward under the engine, are provided. A muffler is located in the vicinity of the joint between the down frame and the lower frame where its rear surface is curved forward in a convex pattern along the down frame and the lower frame. An exhaust pipe extending from a cylinder head is almost S-shaped as seen sideways and its forward curved portion and lower backward curved portion are vertically arranged with its lower end connected with a lower portion of the muffler.

Disclosed is a sliding bearing for supporting a crankshaft journal portion of an internal combustion engine. One of the semi-cylindrical bearings is provided with a circumferential oil groove on its inner circumferential surface, and has two circumferential ends. The circumferential oil groove has an open groove end at at least one of the two circumferential ends, which one is a first circumferential end being directed to the same direction as a relative rotational direction of a crankshaft. The other semi-cylindrical bearing is provided with at least one circumferential local groove on its inner circumferential surface, and has two circumferential ends. The circumferential local groove has an open groove end at one of the two circumferential ends, which one is a second circumferential end being directed to the opposite direction to the relative rotational direction of the crankshaft. The circumferential oil groove and the local circumferential groove are in fluid communication with each other. At a region of the fluid communication, a groove bottom of the local circumferential groove is deviated toward an axis of the sliding bearing from another groove bottom of the circumferential oil groove. An axial groove is formed along a contact interface between the first and second circumferential ends.

To reduce energy loss to increase power transmission efficiency, as well as to suppress unusual sound resulting from whirling vibration. A driving force transmission mechanism includes a drive unit that generates a rotation force and consists of a motor, as well as an independent rotating mechanism that is disposed between the drive unit and one of a pair of left and right gear mechanisms so as to be connected to the output shaft of the drive unit and has greater kinetic energy than the rotating parts of the gear mechanisms. Flexible shafts that rotate by smaller kinetic energy than any of the kinetic energy of the drive unit, the kinetic energy of the rotating mechanism, and the friction forces and damping forces of the rotating parts of the gear mechanisms connect between the drive unit and rotating mechanism, between the rotating mechanism and one gear mechanism, and between the drive unit and the other gear mechanism.

The disclosed engine includes cylinder body, end covers on two sides of the cylinder body, and rotor. The rotor divides inner cavity of cylinder into compression cavity and cavity of applying work. Compression sliding blade and exergonic sliding blade are setup in sliding blade slot of rotor alternately. Compression guiding slide way and exergonic slide way are setup on two sides of the cylinder body. Compression guiding slider of compression sliding blade are slid in sliding blade slot so as to drive the compression sliding blade to be protruded out of the compression cavity; and its revolving center of circle is changed in following change of circular arc center of circle in compression cavity. Thus, the compression sliding blade is retracted in cavity of applying work. Similarly, exergonic sliding blade is retracted in compression cavity, and is protruded out in cavity of applying work. The engine reduces inertia and abrasion, and cost, and raises tightness and work efficiency.

the invention discloses a self-balancing one-piece general purpose seat, and relates to an automobile seat. Special seats needs to be installed in the process of riding of childern, the existing childseats are poor in stability in a sharp turn, emergency brake or other emergency state, safety needs to be improved. A backrest plate is hinged on the leveling base, A bottom airbag is arranged at thebottom of the bottom support box, the control assembly is arranged above the bottom airbag, the first side airbag and the second side airbag are disposed on both sides of the control assembly, the balancing plate is horizontally arranged at the open end of the bottom support box, the balancing plates are in contact with the control assembly and the two side airbags, The gravity sensing end of thegravity sensor is connected with the lower end face of the balancing plate, the pressure sensing end of the first pressure sensor and the pressure sensing end of the second pressure sensor are respectively arranged at both ends of the lower end face of the balancing plate, the controller controls the first air pump to inflate the first side airbag, and the controller controls the second air pumpto inflate the second side airbag. The present invention is used in automobiles.

A single-die injection pump for high-speed internal combustion engines which, because of its compact design and good volumetric efficiency, in conjunction with a high oscillation frequency of the piston, has a pumping quantity comparable to a multiple-die injection pump, without causing excessively high peak torque values in the drive of the single-die injection pump.

The invention discloses a kilowatt-level optical fiber cladding power stripper employing micro-channel water cooling, and the stripper comprises a heat sink. The heat sink comprises a housing and a lining part disposed in the housing. The housing is provided with a cooling water inlet and a cooling water outlet. The outer wall of the lining part is provided with a spiral groove, and two ends of the spiral groove are respectively communicated with the cooling water inlet and the cooling water outlet. The lining part is provided with a central through hole which is used for the passing of an optical fiber. The stripper employs a mode of micro-channel water cooling for heat dissipation. During the stripping of cladding optical power, the stripper can improve the temperature performance and characteristics of cladding optical power. Compared with a conventional optical fiber cladding power stripper, the stripper can improve the uniformity of heat dissipation, is higher in withstood stripped optical power, meets the requirements of 1000W stripped optical power, is simple in structure, is low in manufacture cost, and is suitable for batch production.

The invention discloses a length or angle measuring device and a circuit structure thereof, relates to a displacement measuring device, and aims to provide an integrated, portable and low-power-consumption length or angle measuring device and a circuit structure thereof. The technical key points are that: the device comprises a gear, a shell, a light source, a round indicator grating, a round scale grating, a photosensitive element and a printed circuit board; the light source, the round indicator grating, the round scale grating, the photosensitive element and the printed circuit board are positioned in the shell; one end of the gear is fixedly connected with a central part of the round scale grating, and the other end of the gear extends out of the shell; the light source is positioned on one side of the round scale grating and is positioned on the same side of the round scale grating as the gear; the round indicator grating is opposite to the light source and is separated from the light source by the round scale grating; the photosensitive element is positioned on the printed circuit board and is opposite to the round indicator grating; and the printed circuit board is oppositeto the round scale grating. The device can be used for measuring straight length or angle.

To place a muffler in a front area to make it suitable for an off-road motorcycle, A down frame extending downward obliquely from a head pipe ahead of an engine and a lower frame connected with its lower end, extending backward under the engine, are provided. A muffler is located in the vicinity of the joint between the down frame and the lower frame where its rear surface is curved forward in a convex pattern along the down frame and the lower frame. An exhaust pipe extending from a cylinder head is almost S-shaped as seen sideways and its forward curved portion and lower backward curved portion are vertically arranged with its lower end connected with a lower portion of the muffler.

The invention discloses a woven baler warp knitting machine. The machine comprises a wall board, a connecting shaft, a guide bar swing shaft, a slot needle swing shaft, a needle core swing shaft, a chain guide bar, a weft insertion guide bar, a needle core, a knitting needle, a knockover needle and a transverse moving device; the wall board comprises an end wall board body and a middle wall boardbody, the middle wall board body is fixed to a connecting shaft, the two ends of the connecting shaft are fixed to the end wall board, by means of supporting and positioning of the connecting shaft tothe upper portion of the wall board, the guide bar swing shaft, the slot needle swing shaft and the needle core swing shaft are horizontally and transversely installed on the wall board and can rotate relative to the wall board, the chain guide bar and the weft insertion guide bar are mutually independent, and the chain guide bar is installed on the guide bar swing shaft. Accordingly, two movements (reciprocating swing and linear movement) of the weft insertion guide bar on an existing machine are changed into one movement, that is to say, only reciprocating linear transverse movement is performed, and the inertia force and inertia moment of weft insertion guide bar movement are reduced; the mechanical structure of the guide bar part is simplified; the movement precision between knittingelements is improved.

A high-pressure oil pump roller tappet, used for automobile fuel injection system, mounted between the driving cam and the tappet. The roller tappet includes a shell, a holder, a roller, and a pin. Planes A are arranged on both sides of the seam on lateral sides of the shell. Holes I are arranged at symmetrical positions on two planes A. Holes II are arranged on symmetrical positions on vertical plates. The roller is located in the middle of the pin. Welding has no requirement on the thickness of the plate. The weight can be controlled effectively, reducing inertia force, friction, and wear, improving engine efficiency. The shell and holder are designed as being separate, ensuring that the shell subjects to lateral force as little as possible when the holder subjects to a force, such that the shell is less likely to vibrate. Thus, the shell avoids the abrasion.

The invention relates to a foamed concrete bearing wall wrapped with wire mesh mortar boards and provided with a cross-shaped frame and a construction method. The foamed concrete bearing wall mainly comprises cross-shaped reinforced concrete frame columns, the wire mesh cement mortar boards, a light foamed concrete wall body, prefabricated connecting pieces, concrete, horizontally-distributed rebars, embedded columns and high-polymer mortar. According to the foamed concrete bearing wall, the wire mesh cement mortar boards are high in strength and impermeability, overall strength and overall durability of the foamed concrete bearing wall can be remarkably improved, and the wire mesh cement mortar boards serve as an external formwork so that the purpose that the wire mesh cement mortar boards do not need to be disassembled can be achieved; the wire mesh cement mortar boards at the corners of the foamed concrete bearing wall are integrally formed, and are connected through the high-polymer mortar, integrity of the foamed concrete bearing wall is improved, and seismic performance of the foamed concrete bearing wall is effectively improved; the embedded columns and the light foamed concrete wall body are the same in thickness, so that column edges are avoided, and the floor area is reduced; overall seismic performance of the foamed concrete bearing wall is improved through effective connection among the embedded columns, the horizontally-distributed rebars of the foamed concrete bearing wall, and the prefabricated connecting pieces.

An XY stage comprises a base, a movable table which is disposed on the base so as to be movable in an X direction and a Y direction in an X-Y plane, and a work member which is provided on the movable table. The XY stage further comprises: a first linear motor for giving a driving force in the X direction to the movable table at the same height as the center of gravity of a movable section composed of the movable table and the work member; and a second linear motor for giving a driving force in the Y direction to the movable table at the same height as the center of gravity of the movable section.

The invention discloses a soil remediation agent spraying device for soil remediation, belonging to the technical field of soil remediation. The soil remediation agent spraying device comprises an outer frame body, a push handle, a base and a supporting seat, wherein a driving mechanism is arranged at the bottom of the base, universal wheels are fixedly connected to the other side of the bottom ofthe base, the push handle is welded to one side of the top of the base, and a controller is fixedly connected to one side of the push handle. According to the invention, a telescopic structure is arranged on one side of the base; a water pump pumps out liquid in a water storage tank through a water pipe and sprays the liquid to soil through a fixed frame; and as the densities of a remediation agent required by different soils are different, an included angle between a first hinge rod and a second hinge rod can be changed by rotating an adjusting button to adjust the rotation of a movable gearat the bottom of the adjusting button, so a fixing frame deflects, and thus, the amount of the remediation agent sprayed to unit soil by the device in the advancing process is changed and the purposeof adjusting the spraying density is achieved.

A valve spring device is provided with a first coil spring and a second coil spring combined in series with each other. The inside diameter (coil inside diameter) of the second coil spring is greater than the outside diameter (coil outside diameter) of the first coil spring. A part of the first coil spring including an end portion along an axis is inserted into the second coil spring, thereby forming a combined spring. The end portion of the first coil spring and an end portion of the second coil spring are connected to each other by a connecting member. The first and second coil springs are compressed along the axis as they are located in series between a cylinder head and a retainer. A shaft of a valve is passed within the coil springs.

The invention relates to a wave load self-propulsion ship model test protection device and a use method thereof. The wave load self-propulsion ship model test protection device comprises a hydraulic rod; a pulley block is installed on one end of the hydraulic rod; the other end of the hydraulic rod is fixedly connected to a force sensor; one end of a pulling rope is fixedly connected to a trailer;the other end of the pulling rope passes through the pulley block, and is connected to a self-propulsion ship model; two pulleys are embedded in a hydraulic rod groove in parallel, so that a seamlesspulley block is formed; the protection device is additionally arranged at the front part and the rear part between the self-propulsion ship model and the trailer; when the trailer starts or decelerates to stop, the pulling rope is subjected to load force due to the inertial motion of the self-propulsion ship model; furthermore, load is applied onto the hydraulic rod through the pulley block; theforce sensor detects a load value, and sends the load value to a control computer; when the load achieves a set value, a hydraulic system starts; the self-propulsion ship model is tensioned by tightening the pulling rope; and the self-propulsion ship model gradually moves or stops along with the trailer. The wave load self-propulsion ship model test protection device disclosed by the invention issimple and compact in structure; the kinetic inertia force of the self-propulsion ship model is effectively buffered; and thus, security of a ship, equipment and a person in a test can be greatly ensured.