277 results about "Tappet" patented technology

A damper assembly includes a housing having a tubular shape defining a main chamber extending along a center axis. A piston is movable along the center axis and divides the main chamber into a compression chamber and a rebound chamber. The piston includes a piston body defining a frequency-adaptive orifice (FAO) passage providing fluid communication between the compression chamber and the rebound chamber. The piston includes an FAO valve assembly having an FAO cover member configured to block fluid flow therethrough in response to application of a low-frequency excitation, and allowing fluid flow through the FAO passage in response to application of a high-frequency excitation. The FAO valve assembly also includes a tappet configured to translate relative to the piston body to bias the FAO cover member to selectively cover the FAO passage in response to the application of the low-frequency excitation.

The embodiment of the invention provides a variable lift rocker arm structure and a variable valve phase and lift rocker arm assembly structure, and relates to the technical field of rocker arms. According to the variable-lift rocker arm structure and the rocker arm assembly structure with the variable valve phase and lift, the variable-lift rocker arm structure comprising the rocker arm body and the auxiliary rocker arm structure is arranged, and the rocker arm body achieves switching of the extending position of the piston assembly through oil under the action of the auxiliary rocker arm structure; the first position is the first position or the second position, so that the first valve lift and the second valve lift generated by the valve are switched; on one hand, the eccentric wear influence on the tappets when double rollers or double tappets are switched in the prior art can be reduced to a certain extent; on the other hand, the number of parts is reduced, the mass is reduced, and the overall rotational inertia of the variable lift rocker arm structure is small.

A pneumatic valve comprises an actuator with a movable closing element being disposed in a housing; the closing element with a tappet penetrating an actuator opening between an air chamber formed in the housing and an actuator chamber, and a plate, with a sealing element, for closing the supply opening, thereon, on that end of said tappet protruding into the air chamber, and an elastic element pressing the plate toward the actuator opening in an activated state; the actuator element configured to move, in a non-energized state, the activating element to press the tappet against a supply opening, and in an energized state to move the activating element so as not to exert force on the tappet so that the plate is pressed in the direction of the actuator opening by the elastic element. A sealing collar disposed about the tappet seals the air chamber from the actuator chamber.

The invention discloses a preparation process of a dual-material tappet with both wear resistance and toughness, and relates to the technical field of engine tappet manufacturing, the preparation process comprises the steps of matrix pretreatment, gradient heating, infiltration compounding, diffusion heat preservation, subsection cooling and finish machining, and a wear-resistant alloy material comprises the following chemical components in percentage by weight: 3.2-3.6% of C, 0.4-0.6% of Ni, 2.4-2.5% of Si, 0.9-1.3% of Cr, 0.6-0.9% of Mn and the balance of Fe and inevitable impurities. Mo is equal to 0.4%-0.65%, and Slt is equal to 0.1%, Plt; 0.1%, with the balance being Fe and inevitable impurities. Compared with the prior art, the method has the advantages that the performance can be flexibly matched according to different engine requirements; the comprehensive performance of the working face is remarkably improved by adopting an infiltration composite process; the strength and the toughness of the matrix are improved; the double-metal bonding strength is consistent; the cost of the infiltration composite process is lower than that of brazing; the matrix in the semi-molten state and the wear-resistant material form metallurgical bonding, and the bonding strength is higher; the combined steel and the gradient cooling process jointly improve the impact resistance.

An electromechanical brake actuator (10) for a brake of a vehicle (100) has a brake tappet (14) that can be moved substantially translationally for transmitting a compressive force (F) in the direction of a brake pad (6, 6′), a drive member (16) that generates a drive movement (A) and a coupling gear (18) that operatively connects the drive member (16) to the brake tappet (14). The coupling gear (18) converts the drive movement (A) of the drive member (16) into an adjustment movement (B) of the brake tappet (14). The coupling gear (18) has a coupling member (38) in contact with the brake tappet (14) that moves along a cam path (40, 60) and converts the substantially uniform drive movement into an adjustment movement (B) of the brake tappet (14) at, in portions, a non-uniform adjustment speed (B′).

Recess and protrusion features on a brake pad backing plate and an air disc brake tappet create a unique interface that keys the backing plate for use with the tappet. If the backing plate and / or tappet move during braking, the force applied by the protrusion of the tappet against the inner wall of the recess, or vice versa, can cause stress or damage to the backing plate, tappet, and / or other parts of the braking system. To accommodate such movement, the inner dimensions of the recess can be made greater than the outer dimensions of the protrusion. In one embodiment, the minimum dimensions of the recess are determined from a stack-up of tolerances of various components in the braking system. In another embodiment, maximum dimensions of the recess are determined to avoid overlapping step-down transitions in the backing plate and tappet during braking.

The invention discloses an engine hydraulic variable valve mechanism, an engine and a method, and solves the problem that in the prior art, a piston and a tappet do not move synchronously, so that the valve closing angle is greatly changed along with the change of the rotating speed when a valve mechanism is partially opened. The hydraulic variable valve mechanism of the engine has the beneficial effect that the closing angle of the valve cannot be advanced along with the change of the rotating angle of the crankshaft at different rotating speeds, according to the specific scheme, an oil drainage hole is formed in the side, close to a piston, of a shell, the piston blocks the oil drainage hole, and the oil drainage hole can be communicated with a piston cavity in the moving process of the piston in the piston cavity; a slide valve is arranged at the oil drainage hole, is arranged between the tappet and the piston through the shell and can be communicated or disconnected with the low-pressure cavity, the control oil way is provided with a power-off normally-closed electromagnetic valve, the power-off normally-closed electromagnetic valve controls the slide valve, when the power-off normally-closed electromagnetic valve is powered off, the slide valve cuts off the high-pressure cavity and the low-pressure cavity, and when the power-off normally-closed electromagnetic valve is powered on, the high-pressure cavity is communicated with the low-pressure cavity. And the air valve is in a partial opening state.

The present invention relates to a brake wheel cylinder, comprising a housing, a wedge, and a sleeve assembly. The sleeve assembly comprises a tappet, a sleeve, a screw, and a drive ring. A C-shaped spring and a winding spring are disposed between the tappet and the sleeve. Transmission balls are disposed on both sides of the wedge to cooperate with the tappet to achieve transmission. Inclined surfaces are formed on both sides of the wedge to cooperate with the transmission balls. Inclined surfaces are also formed on the side of the tappet to cooperate with the transmission balls. A ball retaining member is also disposed on the wedge to support a pair of transmission balls. The advantages of the present invention are that transmission balls are used as intermediate transmission between the wedge and the tappet, the transmission balls themselves can freely rotate 360 ​​degrees in any direction, and point-to-surface or line-to-surface contact can be achieved between the transmission balls and the wedge and tappet, thereby greatly reducing the contact area, avoiding the occurrence of jamming, and ensuring stable transmission.

A cam-driven valve assembly comprises a valve body that defines a plurality of fluid passages and supports a group of fluid valves within those passages to control fluid flow. The assembly includes a plurality of cams supported on a camshaft. The camshaft is arranged such that each cam is associated with a corresponding valve. Rotation of the camshaft actuates the valves via the cams. Each cam comprises a pair of cam discs that interact to define an inner cam track. A valve body for each fluid valve includes a cam tappet that is received in the cam track of a corresponding cam. The cam tracks can be configured such that at least one of the valves is actuated at a time different from the actuation time of another valve.

This invention belongs to the field of heat treatment, specifically a heat treatment device for an integrated ball-and-socket valve tappet with an anti-deformation structure. It includes: a material-holding mechanism for supporting the tappet within a heating furnace; and a limiting mechanism disposed on the material-holding mechanism for limiting the lugs at the top of the tappet, reducing deformation during heat treatment. The material-holding mechanism includes a material rack and at least one material tray disposed on the rack. The bottom of the material tray has a grid structure and multiple mounting holes that are interference-fitted with guide bodies for loading the tappet. The limiting mechanism includes a transmission mechanism and a limiter. By setting the limiter, the two thinner lugs on the tappet can be limited to reduce deformation during heat treatment. The mounting holes also allow the tappet to be placed vertically during heat treatment, reducing elliptical deformation of the top lugs due to gravity.

The application discloses a kind of wind turbine single blade installation process dynamic response analysis methods considering wind load action, comprising: according to the wind turbine blade installed and construction sea area, establish blade airfoil database and turbulent wind field database;When the position of lifting point and the position of tappet vertex are described, homogeneous transformation matrix is used to describe the motion of each mechanism of ship-mounted crane;When the position of lifting point is described, the position of tappet vertex is described, and the position of blade centroid in space is described by lifting point position, sling length and generalized coordinate;Wind load at each time point in the process of blade installation is obtained;The sling tension in the process of blade installation is obtained;The dynamics model of single blade installation system is established by using Lagrange method;The method can accurately analyze the coupling motion response between crane ship, ship-mounted crane, sling and blade in the installation process, and simultaneously by selecting generalized coordinate and modeling and analyzing the system based on energy method, the system modeling efficiency is effectively improved.

A vibration damper of a motor vehicle comprises an outer tube and an inner tube which is disposed so as to be coaxial with the latter, and a working piston which is disposed so as to be axially movable within the inner tube and divides the interior of the inner tube into a piston rod-proximal working chamber and a piston rod-distal working chamber, a damping valve device which is disposed in the working piston, wherein the damping valve device has: a coil, an axially movable armature which is at least partially disposed within the coil, a main valve having a main piston which separates a compression main control chamber, a traction main control chamber and a pilot control chamber from one another, a pilot valve which is designed in such a manner that it is able to be passed through by a flow of hydraulic fluid in the traction phase and in the compression phase and has a pilot working chamber and a sliding tappet that is disposed in the pilot working chamber and is axially movable by means of the armature, and a connecting duct which is disposed between the pilot control chamber and the pilot working chamber and fluidically connects those to one another, wherein the main piston comprises a cylinder base region and a cylinder casing region which forms the radially outer face of the main piston.

The invention discloses a method for improving tire assembly quality, and relates to the technical field of tires. After the method is adopted, the problems of impurities in the tire, folding of the flap, eccentricity of the inflating valve, exceeding of the height of a seam allowance platform and the like in the tire assembling process can be avoided, the early quality problems of puncture and cutting of the impurities in the inner tire, extrusion damage of the flap, damage of the inflating valve and the like in the using process of the tire are prevented, and the using mileage of the tire is increased.

Pallet transport device, including: a mobile pallet transport rack; a pallet support arrangement which is carried on the pallet transport frame for a back-and-forth movement relative to the frame and comprises pallet supports which are spaced and shaped to accommodate and support pallets; a lifting frame fixed to the frame and containing guides shaped to support and guide the pallet carrier assembly by a reciprocating lifting and lowering motion, so that the pallet carrier assembly raises and lowers all pallets arranged to be supported by the pallet carriers; a drive machine which is supported by the frame and operatively connected to the pallet carrier assembly and configured to move the pallet carrier assembly by its reciprocating lifting and lowering motion; and a motion control system that is connected to the drive machine and configured to plan the reciprocating lifting and lowering motion of the pallet carrier assembly, wherein the motion control system comprises a mechanical linkage that operatively connects the drive machine to the arrangement, wherein the linkage comprises a cam that is driven by the drive machine and is shaped to plan the reciprocating motion of the arrangement via a movement of a cam tappet that is operatively connected to the arrangement.

The utility model relates to the technical field of engines, in particular to an engine valve tappet layout structure which comprises a cam shaft arranged in an engine box body, tappets are arranged on the engine box body and correspond to two valve cams arranged on the cam shaft in pairs, the upper ends of the tappets are used for being connected with valve push rods, and the lower ends of the tappets are used for being connected with valve push rods. The upper ends of the valve push rods extend upwards and are arranged on a cylinder cover above an engine cylinder head; an oil pump is arranged on the engine box body and corresponds to a pressure supply cam arranged on the cam shaft, and the pressure supply cam is matched with the pressure supply end of the oil pump. The paired two valve cams are arranged at one end of the cam shaft, and the pressure supply cam is arranged at the other end of the cam shaft. The utility model has the characteristics that the structural design is simpler and more reasonable, the layout is more compact, and the working reliability can be improved.

The invention belongs to the technical field of multi-tube grenade launchers, and particularly discloses an ejection mechanism of a multi-tube remote launcher, which comprises an ejection jack seat, a guide part, an ejection jack and an ejection driving part, the ejection tappet is movably arranged between the two bullet holes in the middle layer, and four mounting arms are arranged on the ejection tappet in the circumferential direction of the ejection tappet; the number of the ejection stiles is four, the ejection stiles are correspondingly installed on the four installation arms respectively, the installation positions of the four ejection stiles form four vertexes of a rectangle, three bullet holes are evenly distributed in the outer side of each ejection stile, and the end, away from the ejection stile base, of each ejection stile movably penetrates through the rear linkage and is provided with ejection bullet teeth. Each ejection tooth is configured to synchronously eject cartridge cases in three cartridge holes in the outer side of the corresponding ejection jack; and the ejection driving piece is connected to the rear link. According to the ejection mechanism, the limited space under the 323 layout is fully utilized, ejection operation is efficiently and accurately conducted on the cartridge cases in all the cartridge holes, and the ejection problem under the specific layout is solved.

A pneumatic pressure control valve is described, comprising a housing in which a first valve chamber (2) is formed with a supply opening (3) for supplying compressed gas into the first valve chamber (2), and with a connecting opening (4) which opens into a connecting channel (16) for connection to a cushion to be filled with gas, wherein a diaphragm (8) is arranged in the first valve chamber (2), wherein a spring element (12) is arranged in a first region (9) and is mechanically connected to the diaphragm (8) and exerts a force thereon, and wherein an actuating pin (13) of a valve disk (14) is arranged in a second region (10) and is connected to the diaphragm (8).A second valve chamber (2a) is formed in the housing, which has a first opening with a first cross-section (A1), which opens into the connecting channel (16), and a second opening with a second cross-section (A2), which is connected to the ambient pressure (P0), wherein a tappet (11) with a sealing element (6) is arranged in the second valve chamber (2a), wherein the sealing element (6) closes or opens the first opening, and wherein the second valve chamber (2a) is connected to the first region (9) of the first valve chamber (2) via a pressure equalization channel (16a), and wherein an SMA actuator (20) acting on the tappet (11) is arranged in the housing, the actuation of which actuator moves the tappet (11) into the first or second position.

The utility model relates to the technical field of engines, and discloses a plane tappet, an engine valve mechanism, an engine system and a vehicle, the plane tappet comprises a base and a tappet body, the tappet body is located on the side, away from a contact face, of the base, and the top end of the tappet body is used for abutting against a push rod; an oil passing channel is formed in the plane tappet, a first opening and a second opening are formed in the two ends of the oil passing channel respectively, the first opening is located in the top end, and the second opening is located in the contact face. In the working process, engine oil flows to the top end of the tappet body, then flows into the oil passing channel through the first opening and finally flows out of the second opening. Therefore, due to the arrangement of the oil passing channel, it can be guaranteed that enough engine oil flows to the gap between the contact face and the cam shaft, the lubricating performance between the plane tappet and the cam shaft is improved, and then the working efficiency of an engine valve mechanism is improved.

The utility model relates to the technical field of environmental test equipment, in particular to an adjustable locking mechanism of environmental test equipment, which comprises a test box, a spring and a locking component. A box door is arranged on one side of the test box, a fixing block is arranged on one side of the box door, a connecting block is arranged on one side of the test box, a locking assembly is arranged on one side of the box door, a spring is arranged on the inner side of the fixing block, a limiting block is arranged on one side of the spring, a first rotating shaft is arranged on the inner side of the limiting block, and a threaded ejector rod is arranged on the inner side of the fixing block. A groove is formed in the position, corresponding to the limiting block, of the fixing block, the limiting block is movably connected into the groove of the fixing block, and a groove is formed in the position, corresponding to the first rotating shaft, of the fixing block. According to the device, through an anti-reversion mode, after the device is locked, the device is fixed and prevented from reversion, and therefore the problems that locking is conducted in a most threaded connection mode, threaded connection is vibrated and impacted in the working state of the device, and connection looseness or failure or premature fatigue damage can be possibly caused are solved.

A pneumatic pressure control valve is described, comprising a housing in which a first valve chamber (2) is formed with a supply opening (3) for supplying compressed gas into the first valve chamber (2), and with a connecting opening (4) which opens into a connecting channel (16) for connection to a cushion to be filled with gas, wherein a diaphragm (8) is arranged in the first valve chamber (2), wherein a spring element (12) is arranged in a first region (9) and is mechanically connected to the diaphragm (8) and exerts a force thereon, and wherein an actuating pin (13) of a valve disk (14) is arranged in a second region (10) and is connected to the diaphragm (8).A second valve chamber (2a) is formed in the housing, which has a first opening with a first cross-section (A1), which opens into the connecting channel (16), and a second opening with a second cross-section (A2), which is connected to the ambient pressure (P0), wherein a tappet (11) with a sealing element (6) is arranged in the second valve chamber (2a), wherein the sealing element (6) closes or opens the first opening, and wherein the second valve chamber (2a) is connected to the first region (9) of the first valve chamber (2) via a pressure equalization channel (16a), and wherein an SMA actuator (20) acting on the tappet (11) is arranged in the housing, the actuation of which actuator moves the tappet (11) into the first or second position.

The invention relates to a tire valve having a valve stem and a valve insert inserted into the valve stem, wherein the valve stem and the valve insert enclose an air passage extending in an axial direction from an air inlet end at a first axial end of the valve stem to an air outlet end at a second axial end of the valve stem; and the valve insert comprises an outer sleeve which encloses the air passage and in which a check valve with a valve body and a valve seat is arranged in the air passage. The tire valve according to the invention is characterized in that the valve stem has a taper and / or a radially inner projection at the air inlet end, against which a tappet arranged in the air passage in addition to the check valve rests in a spring-loaded manner.

This invention relates to the field of clutch assembly technology, and discloses an automotive clutch tappet mechanism, including a clutch pedal. A hinge rod is hinged to one side of the bottom of the clutch pedal, and the end of the hinge rod away from the clutch pedal is connected to a clutch master pump. A hydraulic oil pipe is connected to the output end of the clutch master pump, and an oil supply mechanism is connected to the top of the clutch master pump. A clutch slave pump is connected to the end of the hydraulic oil pipe away from the clutch master pump, and a mounting bracket is fixedly connected to the side of the clutch slave pump. A rotating shaft is rotatably mounted on the mounting bracket, and a pusher head is movably engaged on the rotating shaft. Multiple pushers head are arranged in a ring shape, and the side of the upper pusher head abuts against a release bearing. Through the cooperation of an on / off valve, a flow sensor, a high-pressure pump, and branch pipelines, the output force of the clutch slave pump is increased, avoiding faults such as incomplete clutch disengagement and increased pedal resistance caused by insufficient pressure or abnormal flow, thereby improving the working stability of the clutch.

The invention relates to a sanitary valve (1) comprising a main valve (2), which has a movable switching element (3), by means of which the main valve (2) can be actuated between a closed position, in which the switching element (3) abuts against a valve seat (5) of the main valve (2) in a sealing manner, and an open position, in which the switching element (3) abuts against the valve seat (5) of the main valve (2) in a sealing manner, the pilot valve (4) can be actuated by means of a valve tappet (6) between a closed position and an open position, the valve tappet (6) in the closed position is seated on a pilot valve seat (8) of the switching element (3) with a seating region (7), and at least the seating region (7) has a greater hardness than the pilot valve seat (8). The invention further relates to a sanitary fitting comprising a sanitary valve (1) according to the invention.

A rocker arm assembly is rotatable about a rocker arm shaft and comprises a first section and a second section. The first section is configured to accommodate a valve lift profile. The second section is configured to interact with one or more valves. The rocker arm assembly also includes an actuating assembly, which is switchable between a first state and a second state, and a tappet assembly, which is provided in a tappet bore and has a tappet axis angled with respect to a longitudinal axis of the actuating assembly.

The following embodiments relate to pneumatic disc brake tappets and brake pad backplates with interface features. In one embodiment, a pneumatic disc brake tappet is provided, comprising: a top surface; and a support member coupled with the top surface; wherein the top surface includes an interface feature configured to engage with a corresponding interface feature of a brake pad backing plate. In another embodiment, a pneumatic disc brake pad assembly is provided, comprising: a friction material; and a backing plate coupled with the friction material; wherein the backplate includes interface features configured to engage with corresponding interface features of a top surface of the pneumatic disc brake tappet.

The application discloses a replaceable cam diesel engine valve tester, and belongs to the technical field of diesel engine testing equipment. The replaceable cam structure is used to realize the uniform installation of test cams with different shape parameters on the top of a valve rod, the position of a tappet is fixed through a clamping piece, the convex surface direction of the test cam is fixed through an elastic pin, the arc surface of the test cam contacts the end surface of the tappet through a moving shell frame, the initial position of the test cam is determined through the positioning of the test cam and the tappet and the fixation of a locking part, the device has high universality, the driving test of different test cams and valves can be realized only by replacing the test cam, the support structure of the test cam is correctly positioned during the installation of the test cam, and the support structure specially designed and manufactured for different test cams is not needed, thereby saving equipment occupation and reducing the difficulty of test part replacement.

The utility model discloses a stair climbing wheelchair which comprises a driving mechanism, a seat frame assembly, a tappet balance mechanism and an operation controller. The driving mechanism is installed on the seat frame assembly. The utility model has the beneficial effects that a control signal is sent by the operation controller controlled by a person, the motor controller sends a signal to the three mechanisms after receiving the signal: the balance wheel mechanism, and the balance wheel mechanism controls the balance driving device to drive the balance wheel to start lifting or descending operation after receiving the signal; after the tappet balance mechanism receives the signal, the tappet balance mechanism controls a tappet driving device to drive a tappet to start lifting or descending operation; and the driving mechanism is used for controlling the two tires to start to rotate or stop after the driving motor receives the signal. Angles of the three mechanisms can be dynamically adjusted according to factors such as inclination of a stair or an obstacle, weight of a human body and gravity center of the human body, so that the stair or the obstacle can be climbed more stably and safely.

The utility model relates to a normally open solenoid valve for a double-cavity air spring, which comprises a shell, a movable iron core axially moving and a coil assembly controlling the movable iron core to move are arranged in the shell, a base is mounted at one end of the shell, a base is mounted between the base and the coil assembly, and a valve port is arranged on the base. A tappet capable of moving axially is arranged at the position, corresponding to the valve port, between the base and the base, one end of the tappet penetrates through the base to abut against the movable iron core, an elastic piece is arranged at the second end of the tappet, and an auxiliary sealing piece is arranged between the tappet and the base and comprises a sealing body which is in a circular ring shape. The upper end and the lower end of the sealing body are each provided with an outer lip part and an inner lip part, the two outer lip parts, the two inner lip parts and the whole vertical section of the sealing body are in an X shape, the two inner lip parts are in interference fit with the outer wall of a tappet, and the two outer lip parts are in interference fit with a base. A brand new auxiliary sealing piece structure is designed, and the difference value of dynamic and static friction force can be reduced as much as possible through the design.

The utility model discloses a balance supporting device for a wheelchair, which comprises a tappet balance mechanism, and the tappet balance mechanism is hinged to the rear part of a walking mechanism and is used for supporting the walking mechanism. The utility model has the beneficial effects that the tappet balance mechanism is arranged behind the walking mechanism, the walking mechanism and the tappet balance mechanism can be controlled by the controller to achieve better balance when encountering obstacles or climbing stairs, the structure is simple, reasonable and compact, the manufacturing cost is low, the operation is convenient, and the working efficiency is improved. In addition, the walking mechanism is further provided with a balance driving device, different control modes can be selected according to different working conditions, the applicability is wide, and operation is convenient.

The present invention discloses a valve stem (1, 1”) for a valve (100, 100”) in a metering system (200) for metering substances, wherein the valve stem (1, 1”) has an elongated, substantially cylindrical body having a stem tip (60) at a front side end (B), a stem head (10) in an opposite head region (A), and at least a first guide sleeve section (20), a tapered section (30), a second guide sleeve section (40), and a fluid section (50) formed between the stem tip and the stem head from the stem head (10) to the stem tip (60), wherein the outer diameter (30d, 30d”) of the tapered section (30) is reduced relative to the outer diameter (20d, 20d”, 40d, 40d”) of the first and second guide sleeve sections (20, 40). The present invention also relates to a valve (100, 100”) having such a valve tappet (1, 1”) and a metering system (200) having such a valve (100, 100”) or valve tappet (1, 1”).