37results about "Crankshafts" 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.

A rotary piston internal combustion engine includes an engine housing, an output shaft configured to rotate relative to the engine housing about an axis for transmitting power to parts to be operated, a rotary piston mounted eccentrically on the output shaft, a first bearing configured to support and facilitate rotation of the output shaft, the first bearing being sandwiched between a first pair of seals and a second bearing configured to support and facilitate rotation of the rotary piston, the second bearing being sandwiched between a second pair of seals, wherein the output shaft defines an internal path which has a first section to allow a lubricating substance to flow between the first bearing and the second bearing, in use.

Crankshafts for handheld power tools are provided. A crankshaft includes an input section configured to be coupled to a motive device and an output section comprising first and second engagement members. The first and second engagement members are configured to drive a first and second cutting implement, wherein the first and second engaging members are spaced apart from each other in a direction along a rotational axis of the crankshaft and in a direction transverse to the rotational axis of the crankshaft, and wherein the first and second cutting implements are each coupled to or detached from the crankshaft by translating relative to the crankshaft in a direction along the rotational axis.

The utility model relates to technical field of crankshaft swing arm, and disclose detachable crankshaft swing arm assembly, and set up dismounting mechanism on rack shell and top cap, set up crankshaft swing arm mechanism on rack shell, the dismounting mechanism includes long slot, the four around of top cap back is fixedly connected with long piece respectively, the inside of long piece is opened and is limited to limit slot, the inside of limit slot is inserted and is connected with limit block, the side fixedly connected with connecting plate of two limit blocks away from rack shell, the front and back two sides of connecting plate are opened and have rectangular slot, the left and right sides fixedly connected with connecting seat of rack shell, the inside screw thread connection of connecting seat and connecting plate has bolt. This detachable crankshaft swing arm assembly, through dismounting mechanism, bolt screw thread takes down after, pulls connecting plate and drives limit block to take out from limit slot, simultaneously, connecting seat can also take out from rectangular slot, can pull top cap and drive long piece to take out from long slot after, take out top cap from the top of rack shell conveniently, handle the dismounting of crankshaft swing arm mechanism conveniently.

An assembly of a connecting rod and a crankshaft including a pair of crank webs 6 and a crank pin 5. A reservoir 21 for lubricating oil between a big end 10 of the conrod and the crank pin, and a jett

The invention relates to a tyre sealing and / or tyre inflating device (60) having a compressed-air compressor, and compressed-air compressor comprising a drive, in particular an electric motor (50), for driving a compressor device (20) of the compressor, wherein the compressor device (20) has a piston (26) guided in a cylinder (22) and a crank (30), wherein the crank (30) is coupled to a connecting rod (28) of the piston (26) via an eccentric bearing (38) and to the drive via a gear (48) and has a centric bearing (36), wherein a cylinder axis (34) passes through both the centric bearing (36) of the crank (30) and the eccentric bearing (38) of the crank (30) with the connecting rod (28), when a piston stroke of the piston (26) is at the bottom or top dead centre.

Provided is a power transmission device for a hybrid vehicle, including: a connecting shaft, a rim portion connected to a mass by a connecting plate and combined to an outer side of a first rotor shaft connected to a first rotor of a first motor; and a driving plate, located on a crank shaft side opposite the connecting shaft, for connecting the mass and the crank shaft.

An axle assembly that includes a spindle and an axle shaft. The spindle includes a spindle hole that extends along an axis and a spindle journal that protrudes toward the axis. The axle shaft is disposed in the spindle hole and is rotatable about the axis. The spindle journal cooperates with an axle shaft journal or a seal to restrict lubricant from flowing between the axle shaft and the spindle.

This invention discloses a rotary compressor and a refrigeration device. The rotary compressor includes a crankshaft and a rotor assembly. The crankshaft has a first eccentric portion to an Nth eccentric portion arranged sequentially at intervals along the axial direction of the crankshaft, where N is an odd number greater than or equal to 3. The mass of the first eccentric portion is less than the mass of the Nth eccentric portion. The rotor assembly includes a rotor body, a first balance block, and a second balance block. Both the first and second balance blocks are symmetrically arranged about a reference plane passing through the axis of the crankshaft, and the centers of mass of both the first and second balance blocks are located on the reference plane. On the cross-section of the crankshaft, the orthographic projection of the axis of the crankshaft is O, the orthographic projection of the center of mass of the second balance block is A, and the orthographic projection of the axis of the (N+1) / 2th eccentric portion is C, where 75°≤∠AOC≤80°. This effectively reduces the unbalanced inertial force of the rotating components and improves the vibration and noise of the rotary compressor.

A modular crankshaft configured for use within a power end assembly. The modular crankshaft is configured to interconnect a drive shaft and a plurality of linear drive assemblies. The various embodiments of modular crankshafts disclosed herein are assembled by interconnecting a plurality of individual main bearing journals using a plurality of fasteners. One or more embodiments of modular crankshafts may also include individual connecting rod journals that are attached to individual main bearing journals using a plurality of fasteners.

The application discloses a connecting rod with special lines and an engine and relates to the field of engine structure design.The connecting rod comprises a crankshaft and a connecting rod body, the outer surface of the crankshaft is provided with a journal, the end of the connecting rod body is provided with a connecting rod big head, the connecting rod big head is arranged on the outer periphery of the journal, an oil film establishing assembly is arranged between the connecting rod big head and the journal, the middle part of the crankshaft is provided with an oil supply assembly, the oil film establishing assembly comprises a big head hole, the big head hole is arranged in the middle part of the connecting rod big head, and the inner wall of the connecting rod big head is provided with an inner concave line.The big head hole is directly sleeved on the outer surface of the journal, the structure of the bearing bush arranged between the big head hole and the journal is eliminated, the inner wall surface of the big head hole directly contacts the lubricating oil film of the journal surface, the above-mentioned directly matched structure reduces the number of parts in the connecting rod assembly, and the overall development cost of the engine is reduced.

This application belongs to the field of internal combustion engine technology, and particularly relates to a Scottish yoke internal combustion engine, vehicles, ships, and aircraft. The Scottish yoke internal combustion engine includes: a crankshaft with at least one connecting rod journal; a connecting rod with a crankshaft connection portion having a sliding groove; a slider slidably disposed within the sliding groove; a first rolling bearing installed in a mounting hole of the slider, the connecting rod journal and the slider being rotatably connected via the first rolling bearing; and two second rolling bearings respectively installed on both sides of the slider along its sliding direction within the sliding groove, the slider being slidably mounted within the sliding groove via the two second rolling bearings. The technical solution of this application aims to solve the problem of dry friction wear between the bearing bush and connecting rod journal, and between the slider and connecting rod in a Scottish yoke internal combustion engine without forced lubrication.

The bearing element (1) for a camshaft bearing of a piston engine includes: an oil supply hole (2) disposed in the upper half of the bearing element (1); an oil supply groove (3A, 3B) disposed on the bearing surface and extending from the oil supply hole (2) toward the lower half of the bearing element (1); and an oil distribution groove (5) disposed in the lower half of the bearing element (1) and in fluid communication with the oil supply groove (3A, 3B), the width of the oil distribution groove (5) being at most 30% of the width of the oil supply groove (5).

The invention relates to a device (1) for processing, in particular deep rolling, shafts (4) and other components, comprising two live centres (2A, 2B) for receiving a shaft (4) to be processed on both sides, at least one drive (6A, 6B) for rotating the shaft (4) to be processed, at least one pair of rolling tools (8A, 8A', 8B, 8B', 8C, 8C') for processing, in particular deep rolling, the shaft (4) to be processed, wherein the two live centres (2A, 2B) are arranged on a central axis (3), wherein at least one live centre (2B) can be moved along the central axis (3), wherein at least one pair of rolling tools (8A, 8A', 8B, 8B', 8C, 8C') is arranged on a moving axial carriage (10A, 10B, 10C), which can be moved along the central axis (3), and wherein the rolling tools (8A, 8A', 8B, 8B', 8C, 8C') can be moved in a radial direction relative to the central axis (3). In order to achieve an efficient processing of components with a different geometry, at least one change-over device (11A, 11A', 11B, 11B') is provided for exchanging the rolling tools (8A, 8A', 8B, 8B'). The invention also relates to the use of a device of this type for deep rolling shafts (4), in particular wheel set axles of wheels sets for rail vehicles.

This invention relates to a system and method for manufacturing cast steel alloy crankshafts with low porosity. A system and method for manufacturing cast steel alloy crankshafts for internal combustion engines are provided. The method includes providing a mold for the crankshaft. The mold has a cavity to form the crankshaft. The method further includes melting a first metallic material between 1400 degrees Celsius (°C) and 1600 degrees Celsius to define the molten metallic material. Furthermore, the method further includes feeding the molten metallic material into the cavity of a sand casting mold at a riser connection angle between 30° and 75°. The method further includes cooling the molten metallic material in a sand casting mold having at least one cooling member for a solidification time between 5 seconds and 20 seconds to define a solidified metallic material having the dimensions of a cast steel alloy crankshaft. Additionally, the method includes separating the solidified metallic material from the sand casting mold to define the cast steel alloy crankshaft.

Connecting rod between a cold part and a hot part. One aspect of the invention relates to a connecting rod (1) between an accessory housing (10) and a high-pressure compressor (11), said connecting rod (1) extending longitudinally along an axis (X) and comprising at least one convection cooling fin (5) extending longitudinally along the axis (X), each cooling fin (5) having a longitudinal base (7) by which it is connected to the connecting rod (1) and a longitudinal free edge (8) opposite said base (7). Preferably, the connecting rod (1) comprises several cooling fins (5) extending radially outward from their base (7) relative to the axis (X) of the connecting rod (1), these cooling fins (5) being evenly distributed around its periphery (6). Figure to be published with the abstract: Figure 2

The utility model relates to a crankshaft transmission mechanism technical field, concretely relates to a kind of crankshaft assembly with multi-channel cooling;Including connecting rod journal, crank and auxiliary mechanism, auxiliary mechanism includes first main journal, second main journal, gear, fixed device and anti-loosening device, crank and connecting rod journal both sides end position symmetry is provided with oil guide groove, and upside is set as plane, L-shaped oil guide is provided on crank, it is connected with piston rod by connecting rod journal when driving, the reciprocating motion of piston rod upside-down is converted into the rotary motion of first main journal and second main journal, finally power is transmitted to working element by gear, the upside of the end of crank close to connecting rod journal is plane structure, it is convenient for lubricating oil to enter into connecting rod journal, with good lubricating effect, in turn can when crankshaft assembly work uses, it is convenient for lubricating oil to enter into connecting rod journal, conducive to the stability of the stability of crankshaft assembly transmission work.

The application provides a crankshaft assembly, a compressor and a refrigerator, the crankshaft assembly comprising a main shaft and a bearing sleeve sleeved on the main shaft, a center hole is arranged in the main shaft in the axial direction, an oil supply groove is arranged on the outer wall of the bearing sleeve, and an oil inlet hole of the oil supply groove is communicated with the center hole to form an oil supply circuit. The crankshaft assembly can select different bearing sleeves according to the oil pumping demand of the compressor, can ensure the strength of the crankshaft assembly, can adjust the oil supply according to the demand, can reduce the friction between the crankshaft assembly and the crankshaft hole of the cylinder block, can reduce the abrasion, can reduce the power consumption of the compressor, and can improve the noise and vibration.

The application discloses a compressor and refrigeration equipment, and relates to the technical field of compressors, wherein the compressor comprises a cylinder body, a roller, a crankshaft and a sliding vane, the cylinder body is internally provided with a working cavity and a sliding vane groove; the roller is eccentrically rotatable in the working cavity through the crankshaft, and the outer circumferential wall of the roller is concavely provided with an accommodating groove penetrating along the axial direction thereof; the sliding vane comprises a sliding vane main body and a sliding vane head, the sliding vane main body is reciprocable in the sliding vane groove, and the sliding vane head is hinged in the accommodating groove; the total length of the sliding vane in the radial direction is defined as Lv, the thickness of the sliding vane extending in the circumferential direction of the cylinder body is t, the outer diameter of the sliding vane head is D1, the eccentricity of the crankshaft is e, the cylinder height and the inner diameter of the cylinder body are H and D4 respectively, and the following conditions are met: 0.09<=e / t<=2.2; the technical scheme provided by the application can improve the reliability of the compressor.

The application discloses a pump body assembly, a compressor and a refrigeration equipment, and relates to the technical field of compressors.The pump body assembly comprises a cylinder, a roller and a sliding vane structure.The cylinder is provided with a working cavity and a sliding vane groove communicating with the working cavity.The roller is eccentrically rotatable and matched in the working cavity.The outer circumferential side of the roller is provided with a containing groove with a volume of V1.The sliding vane structure comprises a sliding vane body and a sliding vane head.The sliding vane body is slidingly matched in the sliding vane groove, and the sliding vane head is rollingly matched in the containing groove.The volume of the part of the sliding vane head embedded in the containing groove is V2.The filling rate η of the sliding vane head in the containing groove is V2 / V1, and 0.85≤η≤0.93.The filling rate η used for representing the embedding degree of the sliding vane head in the containing groove is limited in a preset numerical range, so that the hinged structure formed by the sliding vane head and the containing groove can have good sealing performance and low friction loss, and the overall energy efficiency and long-term operation reliability can be improved while the volumetric efficiency and mechanical efficiency are improved.

The present application relates to the technical field of torsional vibration damping, and discloses a torsional vibration damper, an engine assembly and a vehicle, comprising: a hub comprising an inner ring portion, the inner ring portion having a first flow channel; an inertia ring comprising an outer ring portion, the outer ring portion being sleeved on the inner ring portion, the outer ring portion and the inner ring portion defining a damping cavity, the damping cavity being in communication with the first flow channel, the inertia ring and / or the hub comprising a partition portion, the partition portion being located in the damping cavity; a mounting member being provided through the inner ring portion, the mounting member being used for being connected with a crankshaft of an engine, the mounting member being provided with a second flow channel, the second flow channel being used for being communicated between the first flow channel and a lubricating flow channel in the crankshaft; and a control member being provided in the second flow channel, the control member adjusting an overflow area of the second flow channel according to a hydraulic pressure in the second flow channel, so as to adjust a liquid storage amount in the damping cavity. The torsional vibration damper changes the natural frequency by adjusting the liquid storage amount in the damper, realizes the damping of the engine assembly in all working conditions, and has simple structure, low cost and low energy consumption.

The utility model discloses a diesel engine crank convenient to maintain relates to mechanical engineering technical field. A diesel engine crank convenient to maintain, including front end axle, output shaft, main shaft neck, two cranks, four connecting rod axle necks and two counterweights, is provided with the filter assembly on front end axle and output shaft all, and the filter assembly includes filter screen cylinder and four lugs, is provided with the filter assembly on front end axle and output shaft in the filter assembly, and filter screen cylinder is as the core filter part, and can effectively intercept all kinds of impurities in lubricating oil, when lubricating oil enters from the oil way mouth of front end axle or output shaft, must first pass through filter screen cylinder, and its fine filter screen structure can block the impurity outside, make clean lubricating oil enter the oil way, compared with traditional crank design, this structure avoids the impurity and enters the oil way deposition and block, ensures lubricating oil to be able to smoothly deliver to main shaft neck, connecting rod axle neck etc. Key parts, maintains good lubrication effect.

This utility model belongs to the field of engine crankshafts, and in particular, a novel crankshaft device for a gas engine. It includes a front axle end, a connecting mechanism, a crankshaft mechanism, and a rear flange, all mounted on the novel gas engine. Multiple crankshaft mechanisms are provided between the front axle end and the rear flange, and these multiple crankshaft mechanisms, the front axle end, and the rear flange are all connected by the connecting mechanism. The connecting mechanism includes a connecting rod, a collar, a retaining block, a groove, a locking nut, and a slot. One end of each of the front axle end and the rear flange is inserted into one end of one of the multiple connecting rods. This utility model, through the cooperation of its various components, not only facilitates the maintenance of the crankshaft mechanism and reduces maintenance costs, but also allows for adjustment of the number of assembled crankshaft mechanisms according to user needs, improving convenience and flexibility.

This invention discloses a compressor and refrigeration equipment, relating to the field of compressor technology. The compressor includes a crankshaft, a cylinder, rollers, and vanes. The crankshaft has an eccentric portion, and the cylinder has a working chamber and a vane groove. The outer peripheral wall of the rollers has a connecting groove with an arc-shaped main body. One end of the vane has a connecting portion including at least two arc surfaces, and the connecting portion is located within the connecting groove, forming a hinge between the rollers and the vane. This invention defines the calculation formulas and value ranges of the geometric parameters α and λ of the hinge structure, effectively solving the problems of high frictional power consumption, uneven contact stress distribution, and easy wear and jamming during long-term operation in traditional hinged compressors, thereby improving the compressor's volumetric efficiency, operational reliability, and overall performance.

This invention discloses a sliding vane, roller compressor, and refrigeration equipment, relating to the field of compressor technology. The sliding vane includes a main body and a hinge joint, with the hinge joint located at one end of the main body. The orthographic projection of the hinge joint includes a first arc segment, a third arc segment, and a transition segment. The transition segment and a reference base circle together form a reference notch. The area S1 of the reference notch and the area S2 of the orthographic projection satisfy: [insert value here]. The transition segment is configured as a straight line, and S1 and S2 satisfy: [insert value here]. The technical solution of this invention aims to optimize the notch size of the hinge joint, thereby balancing the processing feasibility of the sliding vane and the performance of the compressor.

To provide an internal meshing planetary gear device capable of regulating axial movement of a crankshaft even with a relatively simple configuration, and an articulation device for a robot.SOLUTION: An internal meshing planetary gear device 1B comprises an internal gear 2, a planetary gear 3, an input side carrier 18, an output side carrier 19, a first regulation structure 91, and a second regulation structure 92. The first regulation structure 91 includes an input side cover 13 attached to the input side carrier 18 on a side opposite to the planetary gear 3 in an axial direction. The first regulation structure 91 regulates movement of a crankshaft 7A in one axial direction by bringing a step part 70 into contact with the input side cover 13 directly or indirectly. The second regulation structure 92 regulates movement of the crankshaft 7A in the other axial direction by bringing the step part 70 into contact with the output side carrier 19 directly or indirectly.SELECTED DRAWING: Figure 17

This application discloses a pump assembly, a compressor, and a refrigeration device, relating to the field of compressor technology. The assembly includes a cylinder, a crankshaft, rollers, and a vane structure. The cylinder has a working chamber and a vane groove communicating with the working chamber. The crankshaft has an eccentric portion with an eccentricity of e. The rollers rotate eccentrically along the working chamber under the drive of the crankshaft. A receiving groove is provided on the outer periphery of the rollers. The vane structure includes a vane body, a vane head, and a clearance neck. The vane body slides in the vane groove and has a thickness of t. The vane head rolls in the receiving groove and has a diameter of D1. A groove limiting portion is formed at the opening of the receiving groove to cooperate with the clearance neck, and the minimum width of the clearance neck is d. The total length of the vane structure is Lv. e, t, D1, d, and Lv satisfy a preset relationship. This solution balances the various parameters of the vane structure, thereby enabling the vane structure to possess sufficient structural strength, stiffness, and motion reliability under high pressure differential and high eccentricity conditions.

The present invention provides a control device for an internal combustion engine that suppresses the generation of abnormal noises caused by crankshaft vibration. [Solution] A control device for an internal combustion engine that performs a process to suppress the generation of abnormal noise, comprising: a memory 51 that stores the operating conditions under which vibration of the crankshaft 27 generates abnormal noise; and a calculation processing circuit 52 that determines whether the operating state satisfies the operating conditions, and if it is determined that the operating state satisfies the operating conditions, increases the rotational load of at least one of the multiple auxiliary pulleys to increase the tension of the auxiliary belt VB wound around the auxiliary pulley and the crankshaft pulley 27P compared to before the determination of the operating state.