10results about "Crossheads" patented technology

A hybrid lubricating module includes a housing and an assembly which consists of at least two elements and has an axial hole run through by a shaft. At least one of the elements has one set of multiple notches on one end surface communicating with the axle hole. The housing has a through axial cavity to encase the assembly. The outer wall surface of the assembly and the inner wall surface of the housing are assembled to each other to form at least one storage chamber to store lubricating media. The multiple notches on at least one adjacent element form at least one set of fine flow passages communicating with the axial hole and the storage chamber.

The high-precision piston rod connecting structure comprises a piston rod, the upper end of the piston rod is connected with a piston body, the lower end of the piston rod is connected with a crosshead, the upper end of the crosshead is connected with a positioning flange with a center hole, and the lower end of the piston rod is a reducing end transited through a conical surface section. The reducing end penetrates through the center hole of the positioning flange and is stretched and locked by a first fastening structure; the upper section of the center hole of the positioning flange is a taper hole matched with the conical surface section of the piston rod; the upper end of the piston rod penetrates into a center hole of the piston body, is stretched and locked by a second fastening structure and is provided with an anti-rotation structure. Automatic centering is achieved through conical surface matching, stable pre-tightening force is provided in cooperation with a double-fastening structure, the problems that a traditional connecting structure is insufficient in precision and poor in locking reliability are effectively solved, the operation precision and stability of a compressor are greatly improved, and meanwhile the compressor connecting structure has the advantages of being convenient to install and maintain and long in service life.

The invention relates to the technical field of transmission systems, in particular to a differential assembly structure which comprises a shell, a cross shaft body and a locking assembly, and a cross shaft mounting hole is formed in the side portion of the shell in a penetrating mode; the cross shaft body is of a split type structure and comprises a long shaft and two short shafts, and the long shaft and the short shafts are installed in the shell through the cross shaft installation holes and pressed and fixed to the shell through the locking assemblies to form an integrated cross shaft structure. After the locking assembly is unlocked, the long shaft or any short shaft can be independently pulled out of the cross shaft mounting hole in the axial direction of the long shaft or any short shaft. A traditional non-detachable integral type universal joint pin is improved into a split type universal joint pin structure capable of being independently detached, so that when the universal joint pin breaks down, independent replacement and maintenance of a long shaft or a short shaft can be achieved without detaching a left shell and a right shell of the differential mechanism, convenience and efficiency of maintenance operation are remarkably improved, and the service life of the differential mechanism is prolonged. The problem that an existing differential assembly structure is low in maintenance efficiency is solved.

A linear drive assembly configured for use within a power end assembly. The linear drive assembly is configured to interconnect a crankshaft and a pony rod and comprises a crosshead assembly attached to a connecting rod assembly. In one or more embodiments disclosed herein, the connecting rod assembly is configured to attach to opposite sides of the crosshead assembly so that no portion of the connecting rod assembly is disposed within an interior of a crosshead included in the crosshead assembly.

The invention relates to a differential planetary gear shaft, a cross shaft and a planetary gear differential mechanism. The differential planetary gear shaft comprises a shaft body, a mounting groove is formed in the outer wall of the shaft body, the mounting groove extends by a circle in the circumferential direction of the shaft body, the shaft body is sleeved with a bearing, the bearing is embedded in the mounting groove, and the shaft body is suitable for being connected with a planetary gear through the bearing. According to the differential mechanism, the mounting grooves are formed in the shaft body, the bearings are mounted in the mounting grooves, when the planetary gears are mounted on the shaft body, rotating connection is formed between the bearings, friction force is converted into rolling friction through the bearings, and therefore the friction force is effectively reduced, and the running resistance of the differential mechanism is reduced; and the axial positioning of the bearing and the planetary gear is realized.

The invention discloses a heavy-duty car differential planet wheel set without a copper bush and a preparation method, the heavy-duty car differential planet wheel set without the copper bush comprises a cross shaft and a planet wheel, the cross shaft is in interference fit with an inner hole of the planet wheel, a spiral micro-oil groove is formed in the surface of the inner hole of the planet wheel, lubricating grease is arranged in the spiral micro-oil groove, and a step plating layer is arranged on the surface of the cross shaft. The manufacturing method comprises the following steps: S1, preparing the stepped plating layer of the cross shaft; s2, planet wheel inner hole machining; and S3, assembling the assembly. After the use of a copper sleeve is reduced, the use cost is reduced, the risk of heavy metal pollution is also reduced, the continuous oil supply capacity of the spiral micro-oil groove enables the thickness of a lubricating film to be stable, lubrication failure caused by local high temperature is avoided, the wear resistance of the cross shaft is improved through a stepped plating layer on the cross shaft, the stability of the device in the working process is guaranteed, and the service life of the device is prolonged. And the service life of the cross shaft is prolonged.

An internal combustion engine has a uniblock that defines a blind cylinder bore that terminates within the uniblock. A piston is inserted into the cylinder bore from a bottom end of the cylinder bore. Parallel first and second vertical planes extend along first and second lateral sides of the cylinder bore. A cylinder zone being defined between the first and second vertical planes. A crosshead is coupled to the piston. A first crankshaft has a first crankshaft axis that extends parallel to the first vertical plane and that is positioned outside of the cylinder zone. A second crankshaft has a second crankshaft axis that extends parallel to the second vertical plane and that is positioned outside of the cylinder zone. The first crankshaft is coupled to the crosshead with a first connecting rod and the second crankshaft is coupled to the crosshead with a second connecting rod.

The invention belongs to the technical field of nuclear power, and particularly relates to a shielding device and method for a high-dose-rate small pipeline. According to the shielding device for the high-dose-rate small pipeline, the spatial position of the transverse pipe can be flexibly adjusted according to the trend and arrangement of the small pipeline through the detachable structure of the stand column, the transverse pipe and the connecting assembly, and the shielding requirements of various high-dose-rate pipelines, pipelines with different diameters and pipelines with different layouts are met; therefore, various complex pipeline arrangement scenes are adapted, and the requirement that small pipelines cannot directly bear shielding materials is met; after the device is installed, the corresponding layers of flexible shielding materials are wound, so that the high-dose-rate small pipeline can be effectively shielded, and meanwhile, the problem of ray leakage is avoided.

The invention discloses a crosshead and connecting rod connecting assembly which comprises a crosshead and a connecting rod, and the crosshead and the connecting rod are integrally formed. The crosshead and the connecting rod are designed to be of an integrated structure, the problem that in the prior art, when the crosshead and the connecting rod are connected in a separated mode, the crosshead and the connecting rod are not concentric due to a fit clearance is effectively solved, abrasion of a connecting rod sealing piece and a plunger packing sealing piece is remarkably reduced, and the service life of the device is prolonged. And through the integrated structural design, the crosshead and the connecting rod are connected without using a pressing ring and a fastener, so that the connecting structure is simplified, and the production cost is reduced.

The application discloses a reciprocating pump with an anti-vibration and wear-resistant crosshead bushing structure and a machining device, relates to the technical field of reciprocating pumps, and comprises a machine box, a crankshaft is arranged on one side in the machine box, a plurality of connecting rods are arranged on the surface of the crankshaft, the connecting rods are rotatably provided with inlaid crossheads through bolts, the inlaid crossheads are slidably arranged in novel bushings, piston rods are fixedly arranged on one side of the inlaid crossheads, a plurality of spiral semicircular oil grooves are formed in the inner wall of the novel bushings, bosses are symmetrically and fixedly arranged at both ends of the novel bushings, and the inlaid crossheads are symmetrically arranged in a plane shape on both sides; through the novel bushing, the lubrication between the novel bushing and the inlaid crosshead is more sufficient, the wear amount is smaller, and the service life is prolonged; through the inlaid crosshead, oil gas can flow freely from both sides without obstruction, and the phenomenon that the oil gas is blocked is avoided, so that the motion resistance is reduced, and the mechanical efficiency of the whole reciprocating pump is improved.