92results about "Piston rods" patented technology

The present plated member includes, on an outer surface, a plated film mainly composed of chromium deposited from a trivalent chromium bath containing at least chromium, carbon, and oxygen, in which the plated film contains 60 to 80 at % of chromium and 16.5 to 30 at % of carbon and has an indentation hardness of 7 GPa or more on the outer surface, and a degree of crystallinity calculated from a peak integrated intensity ratio of a measured value of X-ray diffraction measurement and the following expression (1) is 4% or less.

The sealing device comprises a first sealing assembly and a second sealing assembly, the first sealing assembly is arranged at the end, away from a gun head, of an inner cavity, the first sealing assembly comprises a sealing lantern ring, a first pressing plate and a first sealing ring, the sealing lantern ring is embedded in the inner cavity, and the first pressing plate is arranged on the first sealing ring. The first pressing plate is partially embedded in the inner cavity and abuts against the sealing lantern ring, the sealing lantern ring is in interference fit with the outer diameter of the piston rod, and the first sealing ring is arranged on the outer wall of the sealing lantern ring in a sleeving mode so as to apply radial pressing force to the sealing lantern ring; the second sealing assembly is arranged at the joint of the cylinder body and the gun head and comprises a second sealing ring, a second pressing plate and a push plate, the gun head is sleeved with the second sealing ring, the second pressing plate is embedded in the cylinder body and presses the gun head, and the push plate is connected to the cylinder body so as to press the second pressing plate. According to the technical scheme, the sealing effect and durability of the pipettor are improved.

The subject matter of this specification can be embodied in, among other things, an apparatus that includes a first assembly having a first piston rod having a first rod end, a second assembly arranged substantially parallel to the first piston assembly and having a second piston rod having a second rod end, an end assembly defining a first aperture configured to receive the first rod end, and a second aperture configured to receive the second rod end, a first retaining cap configured to affix to the first rod end, abut the end assembly when affixed to the first rod end, and retain the first rod end within the first aperture, and a second retaining cap configured to affix to the second rod end, abut the end assembly when affixed to the second rod end, and retain the second rod end within the second aperture.

A working cylinder has a cylinder with a cylinder tube, a first closure part arranged on a first cylinder tube end and a second closure part arranged on a second cylinder tube end, The cylinder tube and the closure parts define a cylinder interior. A piston unit defines at least one working space in the cylinder interior and passes through the first closure part and has an outer end portion. The working cylinder has a corrosion resistant rod-side threaded coupling module with a threaded portion and a weld-on portion. The threaded portion is for coupling to a device to be actuated. The coupling module is welded by the weld-on portion to the outer end portion of the piston unit by a weld seam. The threaded portion is arranged on a longitudinal axis of the piston unit.

The utility model discloses a piston and piston rod connecting structure capable of preventing a piston rod from being broken, which comprises an outer cylinder, the piston rod and a piston block, and is characterized in that a support plate is fixed inside the outer end of the outer cylinder, the outer cylinder is fixed at two ends of the support plate through a connecting rod, and a vertical plate is fixedly connected to the upper side of the support plate. The vertical plate is connected with a piston rod limiting assembly; the piston rod limiting assembly comprises a sliding groove, the sliding groove is formed in the middle of one side of the supporting plate, one end of a T-shaped sliding block is arranged in the sliding groove, and racks are fixedly arranged at the two ends of a transverse rod of the T-shaped sliding block respectively. The utility model relates to the technical field of pistons, in particular to a piston and piston rod connecting structure capable of preventing a piston rod from being broken, which achieves symmetrical supporting and limiting of the piston rod through the arrangement of a supporting plate, a connecting rod, a vertical plate and a piston rod limiting assembly, effectively disperses stress borne by the piston rod and improves the service life of the piston rod. And the stability and the fracture resistance are improved.

The utility model belongs to the technical field of grease guns, and particularly relates to a grease pumping device of a grease gun, which comprises a mounting sleeve capable of being arranged in a grease gun barrel, a piston piece slidably arranged in the mounting sleeve and a fixing component used for fixing the mounting sleeve in the grease gun barrel. The piston piece comprises a piston rod arranged in the mounting sleeve and a piston arranged on the piston rod, the piston can be attached to the inner wall of the grease gun barrel, a threaded rod is rotationally arranged in the mounting sleeve, a threaded hole matched with the threaded rod is formed in the piston rod, the threaded rod penetrates through the threaded hole, and a driving end is arranged at the rear end of the threaded rod; the driving end is controlled to rotate to drive the piston rod and the piston to move back and forth along the threaded rod through the threaded rod, the grease pumping device is simple in structure, grease is pumped into the grease gun barrel through a screw transmission structure, and therefore the efficient and labor-saving effects are achieved. And some users with small arm strength can finish the grease pumping work of the grease gun barrel at one time, so that the working efficiency is improved.

This invention discloses a hydraulic cylinder piston rod blank, including a cylinder body. An annular groove is formed on the end face of the cylinder body, and a connecting sleeve is inserted into the annular groove. A guide assembly is fixedly connected to the end of the connecting sleeve. The guide assembly includes a cover, which is fixedly connected to the end face of the connecting sleeve. A turntable is fixedly connected to the outer wall of the cover. A through hole is formed on the surface of the cover, and a limiting groove is formed inside the through hole. This hydraulic cylinder piston rod blank, through the cooperation of the protrusion and the limiting groove, fixes the dustproof oil seal, preventing it from moving. Simultaneously, a limiting slider on the inner wall of the dustproof oil seal limits the sliding groove formed on the side wall of the rod. The connecting sleeve and cylinder body are fixedly connected together by fastening bolts, thereby preventing the cover from rotating or falling off, preventing the piston rod from rotating, and improving the stability of the piston rod after reciprocating motion.

The invention provides a rolling mill AGC oil cylinder piston rod end gasket and a design method of the rolling mill AGC oil cylinder piston rod end gasket, and belongs to the technical field of strip steel rolling. And after internal gaps are eliminated and integral design is adopted, spare parts are unified, and the temperature of the backup roller bearing is prevented from rising under the action of long-term super-strong rolling force, so that the service life of the backup roller is prolonged, the uniformity of the spare parts is improved, the cost is reduced, and the production requirements are met under the action of the long-term super-strong rolling force.

The invention discloses a gas-liquid cylinder which comprises a cylinder body, a piston is arranged in the cylinder body, a piston rod with the end extending out of the cylinder body is connected to the piston, a gas chamber and an oil chamber are correspondingly formed in the two sides of the piston in the cylinder body respectively, a gas channel communicated with the gas chamber is formed in the cylinder body, and the oil chamber is communicated with the gas channel. The cylinder body is further provided with an independent oil inlet and an independent oil outlet which are communicated with the oil chamber, and a switch valve is arranged at the oil outlet. When the piston rod extends outwards, the switching valve is closed to close the oil outlet, hydraulic oil is input into the oil chamber from the oil inlet, and gas in the gas chamber is compressed to form pre-pressure; and when the piston rod resets, the switching valve is opened to open the oil outlet, and the hydraulic oil in the oil chamber is discharged from the oil outlet. The reset mechanism has the advantages of being reasonable in structure and high in reset speed.

The invention provides modulation-free steel for a piston rod, and relates to the technical field of structural alloy steel, and the steel comprises the following components: 0.18 to 0.25 percent of C, 0.20 to 0.45 percent of Si, 1.20 to 1.60 percent of Mn, less than or equal to 0.025 percent of P, less than or equal to 0.015 percent of S, 0.08 to 0.15 percent of V, 0.02 to 0.06 percent of Nb, 0.30 to 0.50 percent of Cu, 0.20 to 0.35 percent of Ni and the balance of Fe. According to the modulation-free steel for the piston rod, the process is simplified, and energy consumption is reduced; the mechanical property is improved; the corrosion resistance is optimized; the fatigue life is prolonged.

The invention relates to a piston rod (1) comprising a metallic piston rod base body (2) and a first coating (3) applied to a surface of the piston rod base body (2) in a coating area (B) by means of galvanic deposition, which - is formed by a tin-nickel alloy, wherein non-metallic particles in the form of graphite and / or molybdenum disulfide and / or titanium carbide and / or tungsten carbide and / or diamond are optionally incorporated in the tin-nickel alloy, or - is formed by a zinc alloy, which in turn is coated with a lubricating varnish (4). The invention further relates to a use of such a piston rod (1).

The utility model relates to the technical field of hydraulic oil cylinders, in particular to a gas-liquid mixed pressure type energy-saving oil cylinder which comprises a mixing cylinder and a base, the lower end of the mixing cylinder is fixedly connected with the base, an end cover is installed at the end of the mixing cylinder, the inner wall of the end cover is fixedly connected with a sealing sleeve, and the upper end of the sealing sleeve is fixedly connected with a dustproof ring. The inner wall of the sealing sleeve is connected with an auxiliary mechanism. By controlling hydraulic oil injected or discharged outwards from the same oil valves at the upper end and the lower end of the mixing cylinder, the piston rod freely stretches out and draws back in the mixing cylinder when being pushed, the inflation valve injects and discharges different air pressures into and out of the hollow rod, and the hollow rod is sealed by the sealing ring on the inner wall of the piston rod, so that a cavity in the piston rod can push and pull the piston rod; power can be independently provided for different positions of the piston rod in the mixing cylinder through the oil valve and the inflation valve, independent power supply of gas and liquid is achieved, use of different object strengths is improved, and different energy-saving effects are achieved.

The utility model relates to a kind of hydraulic control check valve and its valve core subassembly for hydraulic support stand column, valve core subassembly includes screw plug, screw shell, connecting sleeve and screw sleeve, first compression sleeve and second compression sleeve embedded in screw shell;The inner peripheral wall of screw shell has protruding part;First compression sleeve is arranged between protruding part and screw plug, and second compression sleeve is arranged between protruding part and connecting sleeve;Valve stem includes stem end and stem body part;Stem end is slidably connected with the protruding part of screw shell;Left side of stem end is formed as first sealing part, and right side is formed as second sealing part;Valve stem has initial position and right limit position, when initial position, first sealing part and first compression sleeve form first sealing fit;When right limit position, second sealing part and second compression sleeve form second sealing fit, and the sealing effect between valve stem and valve body is enhanced, the stability of the pressure that maintains valve stem in two positions is guaranteed, ensure the stability of one-way valve two-stage unloading process.

The utility model discloses a hollow piston rod which comprises an oil cylinder and a piston rod, the piston rod comprises a piston rod body and a piston rod head, and the piston rod head is connected to one end of the piston rod body. The piston rod body is provided with a connecting rod at the other end of the piston rod head, the piston rod body is hollow in the axial direction, and two oil pipes are arranged to be communicated with the piston rod head and the connecting rod. The piston rod is subjected to hollow treatment, a traditional oil way is replaced by welding of the two oil pipes at the hollow portion, and the novel piston rod formed by welding of the oil inlet structure, the oil passing structure and the oil outlet structure is formed. Meanwhile, due to the fact that the oil way is arranged in the piston rod, the design of an oil nozzle can be omitted when the oil cylinder is machined, the machining technology of the oil cylinder is simplified, and the space utilization rate is increased.

The invention concerns a sealing arrangement for a reciprocating piston rod of an internal combustion engine, an internal combustion engine and a method for operating an internal combustion engine. The sealing arrangement (10) comprises a stuffing box (11) having a first axial side (12u) which is disposed towards a cylinder (101) and a second axial side (121) which is disposed towards a crankcase (104). The stuffing box (11) comprises an annular rib (14) configured to form a rib surface (15) opposing the surface (105) of the reciprocating rod (103), axially arranged between a first and a second compartment, each housing a fluid-tight ring. The annular rib (14) comprises at least one, preferably radially extending, fluid channel (16), each fluid channel (16) having a first end (17) in fluid communication with the rib surface (15) and / or in fluid communication with the first compartment (36) and / or with the second compartment (37), and a second end (18) fluidly connected or connectable with a first source (19) of pressurized air. Additionally or alternatively the stuffing box (11) comprises at least one nozzle (20), preferably a plurality of circumferentially arranged nozzles (20), arranged at the first axial side (12u) of the stuffing box (11), fluidly connected or connectable with a second source (21) of pressurized air. The nozzle (20) is adapted to provide a, preferably annular, air curtain (32), preferably above the first axial side (12u) of the stuffing box (11).

A piston connecting rod mechanism comprises a piston and a connecting rod which are arranged up and down. The connecting rod comprises a vertically-arranged rod body, the upper side of the rod body is in rigid connection with the piston, a connecting rod big head is arranged on the lower side of the rod body and comprises a big head body and a connecting rod cover, the big head body comprises an upper transverse plate, and first extending parts extending downwards are arranged on the left side and the right side of the upper transverse plate respectively. Second extending parts extending upwards are arranged on the left side and the right side of the lower transverse plate respectively, and after the two second extending parts and the two first extending parts are correspondingly matched in an abutting mode, a transversely-arranged long-strip-shaped through hole is formed between the large head body and the connecting rod cover. The upper side of the connecting rod is directly and fixedly connected with the piston, the large end of the connecting rod is elongated, and the piston and the connecting rod integrally linearly move along the axial direction of the cylinder barrel during acting, so that heat efficiency of the engine can be improved, and operation vibration and noise of the engine can be effectively reduced due to the fact that the connecting rod has no oblique impact force on a crankshaft.

The invention relates to a connecting rod, in particular for an engine, comprising a head region, a central region (305), and a foot region. The head region has a first connection with a thickened section for connecting a piston to a connecting rod receiving area of the piston in a rotatable manner about a pivot axis, said connecting rod receiving area having an undercut which corresponds to the thickened section. The foot region has a second connection for receiving a crankshaft, and the head region is connected to the foot region via the central region. The invention additionally relates to a piston, a crank drive, and an internal combustion engine.

The invention discloses a shock absorber technology, and aims to provide a piston rod for a shock absorber and a manufacturing method of the piston rod. According to the technical scheme, the piston rod comprises a piston rod body, one end of the piston rod body is a piston connecting end, and the other end of the piston rod body is an assembling end used for being connected with a hanging ring connecting rod sub-assembly; the diameter of the external thread section is M12, and the external thread section is used for being in threaded connection with a pure spring type rebuilt valve and a piston assembly; the piston connecting end is further provided with an axial normally-through hole and a radial small half hole perpendicularly communicated with the axial normally-through hole, the distance between the radial small half hole and the end face of the piston connecting end is 30 mm, and the radial small half hole is used for guaranteeing that an oil way of the pure spring type rebuilt valve is smooth. The large outer circle surface of the piston rod body is a matching surface used for installing a guider and an oil seal assembly. The invention is suitable for the technical field of shock absorbers.

The utility model discloses a jack piston rod casting, which relates to the technical field of jack piston rods, and comprises a rod body and a top plate, the top plate is movably connected to the upper end of the rod body, the top end of the rod body is provided with a placing groove, the side surface of the top end of the rod body is provided with a through hole, the lower end of the top plate is fixedly provided with an inserting block, and the inserting block is matched and inserted with the placing groove. A limiting hole is formed in the lower end of the inserting block, and a U-shaped inserting rod is inserted into the penetrating hole in a penetrating mode; a piston rod casting of the jack; through cooperation of the U-shaped insertion rods and the limiting clamping mechanisms, rapid mounting and dismounting of the top plate are achieved, and operation is easy and convenient; the clamping ring and the clamping groove are matched and clamped to enhance the connection stability and prevent the top plate from loosening; the elastic connecting clamp is convenient to expand and reset, and the disassembly and assembly efficiency is improved; the pressing plate is matched with the spring to provide a buffering effect, so that tight attachment of the limiting mechanism is ensured; and by arranging the positioning block and the shifting plate, the operation convenience is further optimized, and the reliability of the overall structure is improved.

The utility model relates to the technical field of piston rod structures, in particular to a piston rod convenient to assemble. Comprising a piston rod body, the piston rod body is composed of a rod body, a sealing ring, a piston and a bolt, a mounting groove and a threaded groove are formed in the end of the rod body, the fixed shell is arranged on the outer side of the rod body, the rotating shell is rotationally connected to the fixed shell, and the two semicircular plates are connected to the side face of the fixed shell and the side face of the rotating shell respectively. Through cooperation of the fixed shell, the rotating shell, the semicircular plate and the conical block, the sealing ring can be easily opened and guided to be smoothly arranged on the mounting groove in a sleeving mode, the risk that the sealing ring is clamped or damaged in the mounting process can be avoided, the sealing ring does not need to be manually arranged at the end of the rod body in a sleeving mode, and the mounting efficiency is improved. And then the sealing ring is expanded by a tool and gradually pushed to a preset position, so that the mounting efficiency and reliability of the sealing ring can be improved, and the assembly process of the piston rod is simplified.

The invention relates to a connecting rod, in particular for a power engine, with a head region (303), a middle region (305) and a base region, wherein the head region has a first connection with a bulge for connecting a piston rotatably about the pivot axis to a connecting rod receptacle of the piston having an undercut corresponding to the bulge and the base region has a second connection for receiving a crankshaft and the head region is connected to the base region via the central region. The invention also relates to a piston, a crank mechanism and an internal combustion engine.

The utility model relates to the field of hydraulic and pneumatic technology provides a kind of double-out piston rod structure, comprising: cylinder body;Two connecting seats are set on the surface of the symmetric end of the cylinder body;Further comprising: two chutes are opened in the symmetric place of the cylinder body inner wall;Piston assembly is movably arranged in the inside of the cylinder body, and piston assembly includes: two piston bodies.The utility model discloses when hydraulic or pneumatic medium enters from oil inlet, the clamping groove on the surface of piston body is moved along the surface of chute in the inside of cylinder body, and cooperation positioning pin is embedded in the inside of positioning hole, and the installation part is positioned and installed by clamping groove, so that piston rod body moves in one direction, simultaneously, the medium is discharged from oil return port on the other side, so that piston rod body keeps synchronous output force and stroke, changes oil inlet direction to realize reverse movement of piston rod body, to realize the function of bidirectional drive, synchronous output.

The present invention relates to an actuating cylinder comprising a cylinder 1 and a piston unit 2, the cylinder 1 having a cylinder tube 3, a first closure part 4a and a second closure part 4b, the cylinder tube 3 having a first cylinder tube end 5a and a second cylinder tube end 5b, the first closure part 4a being arranged at the first cylinder tube end 5a and the second closure part 4b being arranged at the second cylinder tube end 5b, the cylinder tube 3 and the closure parts 4a, 4b forming a cylinder interior 6, the piston unit 2 forming at least one actuating chamber 6.1 in the cylinder interior 6. The actuating cylinder has a rod-side threaded connection module 7, which is formed of a closure part 4a and slidably passes through the closure part 4a and has an outer end section 2.1, the actuating cylinder is designed to be corrosion-resistant and has a threaded section 7.1 and a welded section 7.2, the threaded section 7.1 is designed to be connected to an actuating device, the rod-side threaded connection module 7 is welded by its welded section 7.2 to the outer end section of the piston unit 2 by a weld 7.4, and the threaded section is arranged on the longitudinal axis 7.3 of the piston unit 2.

The subject matter of this specification can be embodied in, among other things, an apparatus that includes a first assembly having a first piston rod having a first rod end, a second assembly arranged substantially parallel to the first piston assembly and having a second piston rod having a second rod end, an end assembly defining a first aperture configured to receive the first rod end, and a second aperture configured to receive the second rod end, a first retaining cap configured to affix to the first rod end, abut the end assembly when affixed to the first rod end, and retain the first rod end within the first aperture, and a second retaining cap configured to affix to the second rod end, abut the end assembly when affixed to the second rod end, and retain the second rod end within the second aperture.

The utility model relates to the technical field of mechanical connection accessories, in particular to a steel pipe sleeve convenient for adjusting the angle of a piston rod, which comprises a sleeve main body and a piston rod main body, the end, away from the threaded cover, of the sleeve body is connected with a sealing cover through six inner hexagon screws, one end of the piston rod body penetrates through the sealing cover and is in threaded connection with a threaded rod, the outside of the threaded rod is in threaded connection with a fastening nut, and one side of the fastening nut makes contact with one end of the piston rod body. The connecting structure has the beneficial effects that the angle of the piston rod main body can be conveniently and quickly adjusted through the matched use of the fastening nut and the threaded rod, the whole connecting structure does not need to be disassembled and reinstalled, the time and the labor cost are greatly saved, the angle of the piston rod can be reliably locked, and the working efficiency is improved. The connection stability in the equipment operation process is ensured, and the safety of the equipment is improved.

A conrod (10 Fig. 1a), a gudgeon / wrist pin 30 and piston 40 together form a reciprocating assembly group of an internal combustion engine, and in use, oil under pressure is delivered from a crankpin v

One or more techniques and / or systems are disclosed for a mechanical assembly comprising a connecting rod with a first end and a second end, a crankshaft journal, a wrist pin, and at least one guide spacer. The crankshaft journal may be coupled to the first end of the connecting rod, allowing for the transmission of rotational forces. The wrist pin may be configured to attach to the second end of the connecting rod, facilitating the transfer of mechanical motion. At least one guide spacer may be positioned on the wrist pin, located on either side of the connecting rod at the second end, to provide alignment and reduce wear. The crankshaft journal and the wrist pin may be arranged in parallel, enabling the connecting rod to perform both rotational and reciprocating motions.

The utility model belongs to the technical field of cooling water treatment equipment, and particularly relates to an electrochemical treatment circulating cooling water hydraulic oil cylinder. Comprising an oil cylinder body which is provided with an oil inlet and outlet I; the piston rod assembly is arranged in the oil cylinder body, and the upper end of the piston rod assembly extends out of the oil cylinder body; the bottom flange is installed at the bottom of the oil cylinder body in a sealed mode, and an oil inlet and outlet II is formed in the bottom flange; the top flange is integrally arranged at the top of the oil cylinder body, and a circular hole is formed in the center of the top flange; the middle of the sealing flange is inserted into a circular hole in the center of the top flange and fixedly connected with the top flange, and six annular grooves are formed in the sealing flange from top to bottom; a spring seal is arranged in the first annular groove, O-shaped rings are arranged in the second annular groove and the fifth annular groove respectively, fixing rings are arranged in the third annular groove and the sixth annular groove respectively, and an oil seal is arranged in the fifth annular groove.

The air cylinder comprises a cylinder body and a piston rod, the cylinder body is provided with a first cavity, part of the piston rod is located in the first cavity, the air cylinder comprises a piston, the piston comprises a main body part, a first limiting part and a second limiting part, and the main body part, the first limiting part and the second limiting part are integrated. The piston rod is sleeved with the main body part, the piston rod comprises a first groove and a second groove, the first groove and the second groove are formed in the axial direction of the piston rod, at least part of the first limiting part is located in the first groove, and at least part of the second limiting part is located in the second groove. At least part of the first limiting part is located in the first groove, at least part of the second limiting part is located in the second groove, the piston and the piston rod are connected, the main body part, the first limiting part and the second limiting part are integrated, and the reliability of connection of the piston and the piston rod is improved.