353 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.

A method for manufacturing a semiconductor device (10), comprising: - a resin preparation step (S1) - for providing a tappet plate (32) in a hole (30a) formed in a recessed part (30A) of a lower mold (30), - for providing a first resin (20a) on the tappet plate (32), and - for providing a second resin (22a) having a lower thermal conductivity than the first resin (20a) on the first resin (20a); - a mounting step (S2) for placing a lead frame (12) on an upper surface of which a semiconductor chip (14) is mounted on an upper surface of the recessed part (30A); - a mold clamping step (S3) for placing an upper mold (40) on the lower mold (30), and for performing mold clamping in a state in which the semiconductor chip (14) is housed in a cavity formed by the lower mold (30) and the upper mold (40); - an injection step (S4) for lifting the plunger plate (32) after the first resin (20) and the second resin (22) have been melted to provide the second resin (22) in the cavity, and by subsequently introducing the first resin (20), the first resin (20) is brought into contact with a lower surface of the lead frame (12); and - a pressure maintaining step (S5, S7) for exerting a pressure on the first resin (20) and the second resin (22) through the plunger plate (32), and for maintaining the pressure.

The utility model discloses a double-diaphragm disc type brake chamber which comprises a front cover assembly, a middle body assembly and a cylinder body assembly. A push rod disc assembly is arranged between the front cover assembly and the middle body assembly, a first leather film is arranged between the push rod disc assembly and the middle body assembly, a dustproof sleeve is fixedly arranged on the front cover assembly and arranged on the outer side of the push rod disc assembly in a sleeving mode, and the cylinder body assembly comprises a second leather film, an aluminum release disc, a cylinder body and a release bolt. According to the double-diaphragm disc type brake chamber, due to the fact that the sealing assembly is arranged, hard friction between the tappet rod and the inner hole of the middle body is reduced, the service life of a product is prolonged, meanwhile, the tappet rod and the tappet rod disc are connected in a riveting pressing mode, the assembling technology is simplified, the assembling cost is reduced, and the potential risk that screws are loosened due to the fact that thread glue is not coated is avoided; center positioning of the release disc is increased through the parking cavity leather film, and damage to the release disc and the spring due to the fact that the leather film and the release disc are not positioned in the prior art when the parking cavity works is reduced.

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.

Device for fastening at least one magnet (14) in a magnet receptacle (22) of a rotor core (12, 46) of a rotor (10) of an electrical machine, with a receptacle (44) which is designed to receive the rotor core (46) at least temporarily, an adjusting unit (48) which is designed to carry out a lifting movement in order to thereby change a distance between a tappet (38) and the rotor laminated core (46) arranged on the receptacle (44), an embossing unit (42) arranged on the tappet (38), which has at least one punch (84), wherein the embossing unit (42) is designed such that the punch (84) penetrates at least partially into the rotor laminated core (46) in the region of the magnet receptacle (22) due to the lifting movement and the magnet (14) is clamped in the magnet receptacle (22) by the material deformation thereby occurring in the edge region of the magnet receptacle (22), and with a control unit (32) which is designed to process an adjustment path variable and a pressure force variable and to control the adjustment unit (48) as a function of the adjustment path variable and the pressure force variable, wherein the adjustment path variable represents the adjustment path by which the plunger (38) and the rotor laminated core (46) move towards one another due to the lifting movement, and the pressure force variable represents the force with which the punch (84) presses onto the rotor laminated core (46).

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.

The utility model discloses a diesel engine tappet disassembling and assembling device which comprises a sleeve with a hollow structure inside. The push rod penetrates through the sleeve, the outer side face of the push rod is attached to the inner side face of the sleeve, and the sleeve can move in the length direction of the push rod; one end of the push rod is sleeved with the rubber body, the swelling amount of the rubber body is changed by changing the position of the push rod, and the rubber body is used for generating friction force with the inner wall of the tappet hole; according to the diesel engine tappet dismounting and mounting device, dismounting and mounting of the tappet can be facilitated, the dismounting and mounting efficiency is high, and the diesel engine tappet dismounting and mounting device is suitable for dismounting and mounting of the tappet under various conditions.

A pressure reducer (10) having: a housing (11) defining a front pressure chamber (13) and a rear pressure chamber (14); a valve (12) positioned in the housing (11), wherein the valve (12) has a diaphragm (16) acting on a valve tappet (15), on which diaphragm acts on the one hand a spring force of a spring element (17) acting in the opening direction of the valve (12) and on the other hand a force acting in the closing direction of the valve (12) and depending on the pressure present in the rear pressure chamber (14), and wherein the valve (12) has a valve body (22) fixed to the valve tappet (15), which valve body acts together with a sealing element (24). The valve body (22) is contoured cylindrically or hollow-cylindrically or conically in the case of a sealing surface (23) acting in the constructional radial direction. The sealing surface (23) of the valve body (22) is interrupted via a flow channel (26) at at least one circumferential position such that depending on the pressure loss present in the rear pressure chamber (14), either the sealing element (24) bears against the sealing surface (23) and completely closes the flow area (25) between the sealing element (24) and the sealing surface (23) including the corresponding flow channel (26), or the sealing element (24) moves away from the sealing surface (23) and completely releases the flow area (25) including the corresponding flow channel (26), or the sealing element (24) bears against the sealing surface (23) and only partially releases the flow area (25) via the corresponding flow channel (26).

The utility model discloses a tappet-free body type oil feed pump and an oil injection system, and relates to the technical field of oil injection systems, the tappet-free body type oil feed pump comprises a body with an oil cavity, the oil cavity at least comprises a first cavity body used for installing an eccentric cam assembly and a second cavity body used for installing an oil pumping assembly, the first cavity body is communicated with the second cavity body, and the first cavity body is communicated with the second cavity body. The oil pumping assembly comprises a plug sleeve installed in the body and a plunger movably connected in the plug sleeve, the plunger and the plug sleeve are elastically connected through an elastic piece, and the eccentric cam assembly makes contact with the plunger so as to jack up the plunger. Two large-mass parts, namely a tappet body and a spring lower seat, are omitted, so that the motion inertia caused by the unsprung mass of the plunger spring is effectively reduced, and the high-rotating-speed operation of the oil supply pump is favorably realized.

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.

Roller tappet (40) for a pump (1), in particular a high-pressure pump (1) for a high-pressure injection system for a motor vehicle for supporting a reciprocating pump piston (12) on a drive shaft (14), comprising a tappet body (8) for supporting a roller (46), a hollow-cylindrical roller (46), a bearing pin (52) arranged within the hollow-cylindrical roller (46) for supporting the roller (46), such that a radial bearing gap (38) is formed between the roller (46) and the bearing pin (52), a first lubricant channel (11a) formed in the tappet body (8) for supplying a lubricant to a first axial end region (29) of the roller (46) and / or the bearing pin (52), a second lubricant channel (11b) formed in the tappet body (8) for supplying a lubricant to a second axial end region (31) of the roller (46) and / or the bearing pin (52),wherein the roller tappet (40) comprises a movable actuator (2) for changing the flow cross-sectional area of the first and / or second lubricant channel (11a, 11b) in order to achieve a reliable supply of the volume flow (Q1) of lubricant conducted through the first lubricant channel (11a) and the volume flow (Q2) of lubricant conducted through the second lubricant channel (11b).

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 present invention provides a tappet hole repair tool and a method for repairing the tappet holes of a diesel engine body in a confined space, which relates to the technical field of diesel engine repair. The problem that it is difficult to repair the tappet holes of a diesel engine body in a confined space and it is difficult to ensure the machining accuracy in the prior art is solved. The through holes of the fixing plate of the present invention are arranged according to the tappet holes and stud holes of the diesel engine body. The center of the tappet hole is determined by the cooperation of the conical positioning part of the positioning sleeve and the mating hole of the body. The position of the fixing plate relative to the tappet hole is ensured by the clearance fit between the cylindrical positioning part of the positioning sleeve and the first through hole of the fixing plate. The position of the tool center relative to the tappet hole is ensured by the clearance fit between the tool shank of the special tool and the third through hole of the fixing plate of the positioning sleeve, ensuring the machining accuracy of the tappet hole and the bushing, and obtaining a tappet hole that meets the requirements. Compared with the prior art, the present invention can be conveniently brought into the confined space to assist in the repair of the tappet hole to reduce the difficulty and can ensure the machining accuracy of the tappet hole.

The utility model provides a novel hydraulic tappet, and belongs to the technical field of hydraulic tappets. The problem that an existing hydraulic tappet plunger is prone to abrasion is solved. The novel hydraulic tappet comprises a rocker arm and a tappet body, a plunger is arranged in the tappet body, the tappet body and the plunger are provided with a first oil inlet hole and a second oil inlet hole respectively, an oil passing pipeline is arranged in the plunger, a one-way valve is arranged in the tappet body and located at the lower end of the oil passing pipeline, and a reset spring is arranged at the lower end of the one-way valve. A plurality of balls are arranged at the position, making contact with the tappet body, of the side wall of the plunger, and a plurality of mounting holes used for mounting the balls are formed in the side wall of the plunger. The utility model has the advantage of wear resistance.

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.

The present invention relates to a clutch actuator, a clutch and a car, wherein the clutch actuator comprises: a housing; a worm, one end of which is rotatably connected to an output shaft on a motor on the housing; a worm shaft assembly, the worm meshing with a worm wheel in the worm shaft assembly; a secondary fan gear shaft assembly, the secondary fan gear in the secondary fan gear shaft assembly meshing with a secondary driving gear in the worm shaft assembly; a tappet, one end of which is hinged to a crank rocker arm in a crank rocker arm mechanism in the secondary fan gear shaft assembly, and the other end is connected to a piston in a master cylinder on the housing. The above scheme provided by the present application amplifies the torque transmitted by the motor in the first stage by meshing the worm with the worm wheel in the worm shaft assembly, and then amplifies the torque transmitted by the motor in the second stage by meshing the secondary driving gear with the secondary fan gear, thereby realizing two-stage deceleration, so that the clutch has a larger speed ratio and a larger driving force, and is more practical.

The present invention provides a new tappet structure, belonging to the technical field of automobile parts. It solves the problem that the existing means of adjusting valve clearance are single, tools are needed for adjustment, and the adjustment process is cumbersome and inconvenient. The new tappet structure includes a cam, a tappet, a valve and a rocker mechanism, one end of the rocker mechanism is connected to the valve, the other end of the rocker mechanism is connected to the tappet, and an adjustment box is arranged between the tappet and the cam. The adjustment box includes a box body, a sealing plate, a movable plate, two drive seats, a fixed gear and two rack plates, the two drive seats and the two rack plates are respectively arranged at the upper and lower ends of the box body, the two drive seats are respectively connected to the two rack plates, and control the two rack plates to move relative to or towards each other. The present invention has the advantage of being easy to adjust the size of the valve clearance.

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.