232results 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.

The invention relates to the technical field of crankshaft center hole machining, and discloses an engine crankshaft center hole machining device which comprises a machining base table, a limiting mechanism is movably connected to the center of the top end of the machining base table, and positioning mechanisms are fixedly connected to the two sides of the top end of the limiting mechanism. A placing mechanism is fixedly connected to the center of the top end of the machining base table, a crankshaft assembly is placed at the top end of the placing mechanism, and the crankshaft assembly is located in the positioning mechanism; by arranging the adjusting wheel, the output bevel gear, the transmission bevel gear and the limiting plate, the adjusting wheel is rotated before a center hole is drilled, the output bevel gear is driven to rotate through the output shaft when the adjusting wheel rotates, the rotating shaft is driven to rotate through the transmission bevel gear when the output bevel gear rotates, and then the rotating sleeve and the limiting plate rotate; at the moment, the angle between the two limiting plates is changed, the balance block can be supported, the crankshaft assembly placed in the limiting plates can be preliminarily and accurately positioned, and follow-up rapid and accurate positioning is facilitated.

The invention discloses a compressor and a refrigerating system. The compressor comprises a machine shell, a motor and a pump body assembly. The shell is provided with an accommodating cavity; the motor is arranged in the containing cavity and comprises a rotor and a stator arranged on the periphery of the rotor in a sleeving mode. The pump body assembly is arranged in the containing cavity, the pump body assembly comprises a crankshaft, a static scroll plate, a movable scroll plate and a support, the crankshaft sequentially penetrates through the support, the movable scroll plate, the static scroll plate and the motor, the crankshaft comprises an eccentric section, and the movable scroll plate is arranged on the eccentric section in a sleeving mode; the outer diameter D of the stator and the outer diameter D1 of the eccentric section meet the relational expression that D / D1 is larger than or equal to 5 and smaller than or equal to 7. The problem that in the prior art, a crankshaft of a scroll compressor is low in reliability can be solved.

This invention relates to the field of compressor technology and discloses a reciprocating compressor and a refrigeration device. The reciprocating compressor includes a crankcase, a crankshaft, a connecting rod, and an oil baffle. The oil baffle covers the eccentric shaft section and the crankshaft connection portion. An opening is formed on the peripheral wall of the oil baffle, including a first opening and a second opening. The connecting rod passes through the first opening. The second opening connects to the end of the first opening in the crankshaft axial direction away from the first through hole and includes a first port and a second port connected in the crankshaft axial direction. The first port is opposite to the piston, and the second port is opposite to the cylinder wall of the cylinder chamber in the crankshaft axial direction away from the first through hole. The circumferential width of the second port decreases in the direction away from the first opening, and the maximum circumferential width of the second port is less than or equal to the minimum circumferential width of the first port. Therefore, the reciprocating compressor can improve the problem of high oil discharge at high frequencies and is less likely to affect the lubrication effect on the piston and cylinder head under low-frequency operating conditions.

Crankshaft assemblies for handheld power tools are provided. A crankshaft assembly includes a first engagement member defining a first opening, a second engagement member defining a second opening, a crankshaft coupled to the first engagement member and the second engagement member and configured to rotate about a rotational axis, and at least one crank arm coupled to the crankshaft for driving one or both of the first engagement member and the second engagement member. The crankshaft assembly also includes a first sliding member disposed in the first opening and a second sliding member disposed in the second opening and contacting the first sliding member.

The utility model relates to the technical field of crankshafts, in particular to an engine crankshaft. In order to solve the problem that an existing crankshaft easily generates large centrifugal force, the novel engine crankshaft comprises a plurality of crank sets, each crank set comprises two cranks, a connecting rod journal is fixedly connected between the two cranks of each crank set, a front end shaft is fixed to the outer side of the crank set located on the front side, and a rear end shaft is fixed to the outer side of the crank set located on the rear side. A rear end shaft is fixed to the outer end of the crank set located on the rear side, every two adjacent crank sets are connected through a main journal, each crank is of a fan-shaped structure with the wide upper end and the narrow lower end, and a lightening hole is formed in the upper end of each crank, so that the upper end and the lower end of each crank are equal in balance weight. According to the engine crankshaft, the crank is ingeniously designed to be of the fan-shaped structure, and the lightening hole is formed in the upper end of the crank, so that the upper end and the lower end of the crank are equal in counter weight, centrifugal force and inertia generated when the crankshaft rotates at a high speed are effectively reduced, and therefore the probability of deformation of the crankshaft is reduced.

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.

The embodiment of the utility model provides an integrated crankshaft structure, a range extender and an automobile, and relates to the field of automobile parts. The integrated crankshaft structure comprises a crankshaft main body and a rotor shaft which are integrally formed, a flange is formed at the joint of the crankshaft body and the rotor shaft, a first weight reduction part is formed on the end face of the rotor shaft, a second weight reduction part is formed on the outer side wall of the flange, and the first weight reduction part and the second weight reduction part are arranged in a staggered mode in the circumferential direction. According to the integrated crankshaft structure, the crankshaft main body and the rotor shaft can be integrally designed, so that the assembly process is simplified, the precision is ensured, and meanwhile, the noise and damping performance of an automobile is improved; and the first weight reduction part and the second weight reduction part are arranged in a staggered mode, so that the overall structure is more compact and light. The range extender comprises an integrated crankshaft structure and has all functions of the integrated crankshaft structure. The automobile comprises the range extender and has all functions of the range extender.

A semi-split bearing that constitutes a sliding bearing that is less likely to be damaged during operation of an internal combustion engine is provided. The semi-split bearing includes at least one protrusion that protrudes from an outer peripheral surface to a radially outer side. A recess that is recessed from the outer peripheral surface to a radially inner side is formed in the entire range of a circumferential length between the protrusion and a circumferential end surface of the semi-split bearing. Two radial grooves are formed in the circumferential end surface of the semi-split bearing with respect to the protrusion, and are respectively adjacent to each of the recess side surfaces. The radial grooves extend in the radial direction along the recess side surfaces, and are separated from the recesses midway through the extension. An inner peripheral surface side end portion of the extension direction of the radial grooves is located between a recess bottom surface and an inner peripheral surface of the semi-split bearing. A groove width and a groove depth of the radial grooves decrease from a position separated from the recess toward the inner peripheral surface side end portion, and become zero at the inner peripheral surface side end portion.

The invention relates to a crankshaft for an internal combustion engine. In particular, the invention relates to a crankshaft having at least one crankshaft segment, comprising at least one disk-shaped crank web, arranged with rotation symmetry relative to a crankshaft axis and carrying a main bearing surface that rotates around a crankshaft axis, and a crank pin that is arranged eccentric to the crankshaft axis and extends parallel to the crankshaft axis.

The invention relates to the technical field of engine crankshafts, in particular to a split type two-stroke engine crankshaft which comprises a cylindrical front end shaft with one axial end being a free end and the other end extending in the axial direction; the second crank is of a disc-shaped structure, the end face of one side of the second crank is coaxially and fixedly connected with the end face of the extending end of the front end shaft, and the diameter of the second connecting rod journal is smaller than that of the second crank; and the vent holes adopt a double-hole design of which the aperture is 10mm and the vent holes are symmetrically distributed at 180 degrees in the circumferential direction, so that the crank case is effectively communicated with the inner spaces on the axial front and rear sides of the connecting rod journal. When the engine runs, the crankshaft rotates at a high speed, and the vent hole synchronously rotates along with the crankshaft to form a'dynamic flow guide channel ': when the piston moves downwards to increase the pressure of the cavity on one side, high-pressure gas can quickly flow to the low-pressure cavity through the vent hole, so that excessive accumulation of local pressure is avoided; when the piston moves upwards to form negative pressure, the low-pressure cavity can supplement gas from the high-pressure cavity through the air hole, and pressure dynamic balance under all working conditions is achieved.

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 crankshaft is used for the compressor, the compressor comprises an air cylinder, a first bearing, a second bearing and a piston, the piston is arranged in the air cylinder, and the first bearing and the second bearing are installed at the two ends of the air cylinder respectively. The eccentric part is connected to the crankshaft main body and is used for driving the piston to eccentrically rotate; the first shaft shoulder is connected to the crankshaft body, and the first shaft shoulder can abut against the first bearing; the second shaft shoulder is connected to the crankshaft body and can abut against the second bearing, the first shaft shoulder and the second shaft shoulder are located at the two ends of the eccentric part respectively, and at least one weight reduction groove is formed between the first shaft shoulder and the eccentric part and between the second shaft shoulder and the eccentric part respectively. The weight reduction groove is formed in the crankshaft, so that the overall weight of the crankshaft can be reduced, the friction force between the crankshaft and the first bearing and the second bearing is reduced, the abrasion degree of the crankshaft is reduced, the service life of the crankshaft is prolonged, and the reliability of the crankshaft is improved.

This invention relates to the field of crankshaft center hole machining technology and discloses an engine crankshaft center hole machining device, including a machining base. A limiting mechanism is movably connected to the center of the top of the machining base. Positioning mechanisms are fixedly connected to both sides of the top of the limiting mechanism. A placement mechanism is fixedly connected to the center of the top of the machining base. A crankshaft assembly is placed on the top of the placement mechanism, and the crankshaft assembly is located within the positioning mechanism. This invention, by providing an adjusting wheel, an output bevel gear, a transmission bevel gear, and a limiting plate, allows the adjusting wheel to rotate before drilling the center hole. When the adjusting wheel rotates, it drives the output bevel gear to rotate through the output shaft. When the output bevel gear rotates, it drives the rotating shaft to rotate through the transmission bevel gear, thereby causing the rotating sleeve and the limiting plate to rotate. At this time, the angle between the two limiting plates changes, which can support the balance block and allow the crankshaft assembly placed in the limiting plate to be initially and accurately positioned, facilitating subsequent rapid and accurate positioning.

The composite rotary joint device comprises an extension shaft, an oil inlet joint and an air inlet joint are rotationally installed on the right side of the extension shaft, the air inlet joint is arranged on the right side of the oil inlet joint, the oil inlet joint is rotationally installed on the extension shaft, and a first air inlet channel is formed in the axis position of the extension shaft. The first air inlet channel penetrates through the front end and the rear end of the extension shaft and is communicated with the air inlet connector, a first oil inlet channel is further arranged in the extension shaft, the first oil inlet channel is located on one side of the first air inlet channel, and the first oil inlet channel is communicated with the oil inlet connector. The crankshaft is connected with the composite rotary joint device, the air inlet function and the oil inlet function of the crankshaft can be integrated on one side, the other side of the crankshaft is released, installation of the crankshaft and other functional accessories is facilitated, later maintenance of the crankshaft only needs to be conducted on one side of a machine table, and maintenance of the crankshaft is more convenient.

The utility model discloses an anti-vibration stable automobile crank shaft. The anti-vibration stable automobile crank shaft comprises a main shaft, a crank arm, a brake mounting plate, a fixer and a fastener, the fastener comprises a fastening bolt and a fastening nut, non-return grooves are circumferentially distributed in one end face of the fastening nut at equal intervals, an installation groove is formed in the fixator, a sliding ring block is installed in the installation groove in a floating mode, non-return blocks are circumferentially distributed at the top end of the sliding ring block at equal intervals, and the non-return blocks extend out of the installation groove through groove openings and can be inserted into the non-return grooves. An unlocking piece is arranged on the fixer and is used for completely retracting the non-return block into the mounting groove; through the arrangement of the non-return block, the non-return groove and the sliding ring block, the non-return block can be driven by the inclined plane to enable a worker to normally rotate the fastening nut, and when the fastening nut is loosened, the fastening nut cannot reversely rotate to reset; and through the arrangement of a connecting block, a positioning straight groove and a second screw rod, the position of the mounting hole can be adjusted within a certain range, so that the mounting error is eliminated, and different requirements are better met.

The utility model discloses a high-strength crankshaft for a compressor, which relates to the field of compressors and comprises a crank, a spindle is arranged on one side of the crank, an insertion hole is formed in the center of one side of an inner cavity of the spindle, and an insertion column is arranged on one side of an inner cavity of the insertion hole. Through the elastic reset function of the fixing spring, the abutting column can be driven to move rightwards, when the abutting column moves rightwards, the clamping balls placed in the two arc-shaped containing grooves can be pushed into the arc-shaped clamping grooves from the two arc-shaped containing grooves and the through hole, and then the position of the small end of the crankshaft can be limited; therefore, the crankshaft small head and the crank can be firmly connected together in an anti-falling mode for use, the situation that connection of the crankshaft small head is not stable is avoided, the connection firmness of the crankshaft small head and the crank is improved to a certain degree, the crankshaft small head can be better matched with the crank for use, and the service life of the crankshaft small head is prolonged. And actual use is facilitated.

To provide a piercing method for a crank shaft capable of preventing a hardening crack in a hardening process without making formation of a through hole difficult, and the crank shaft to which piercing is applied by using the method.SOLUTION: A piercing method for a crank shaft for forming an oil circulation through hole 20 penetrating from a surface of a journal shaft part 12 to a surface of a pin shaft part 14 includes: a recessed part formation process of forming a recessed part 24 at a through hole formation position on an outer surface of the journal shaft part 12 or the pin shaft part 14 before formation of the through hole 20; a hardening process of applying high-frequency hardening to the surface of the crank shaft 10 after the recessed part formation process; and a through hole formation process of forming the through hole 20 from a portion in which the recessed part 24 is formed after the hardening process. A depth of the recessed part 24 is a depth at which the surface of the recessed part 24 is in an unhardened or incompletely hardened state in the hardening process.SELECTED DRAWING: Figure 1

A pump assembly may include a bearing housing having a bore. The pump assembly may include a connecting rod connected to the bearing housing at a first end of the connecting rod and connected to a crosshead at a second end of the connecting rod via a wrist pin. The connecting rod may include a lubrication channel that extends within the connecting rod. The pump assembly may include a shell bearing in the bore of the bearing housing, the shell bearing having an inner surface and an outer surface. A portion of the inner surface of the shell bearing that contacts the crankshaft in a forward stroke of the crosshead may be uninterrupted by a groove or an aperture configured to direct lubrication fluid to the lubrication channel of the connecting rod.

Crankshaft angle detection device, which includes: an alternating current generator rotor (20) which is held by one end of a crankshaft (10) and is designed to rotate integrally with the crankshaft (10); a pulse generator ring (30) made of a metal plate, having an outer diameter (D2) larger than an outer diameter (D1) of the AC generator rotor (20), wherein the pulse generator ring (30) has an annular plate region (31) and a detected region (32) having a plurality of convex regions (32) formed on an outer circumference of the annular plate region (31), which form a predetermined void between themselves and an outer circumferential surface (22) of the AC generator rotor (20), being curved in the direction of the outer circumferential surface (22) of the AC generator rotor (20) in an axial direction of the crankshaft (10), and is configured to rotate integrally with the AC generator rotor (20), wherein the annular plate region (31) is attached to a side surface (21) of the AC generator rotor (20); and a magnetic sensor (40) which is formed on an outer circumference of the pulse generator ring (30) and is designed to detect the detected area (32).

The marine engine crankshaft balance weight structure convenient to disassemble comprises a crankshaft body and a balance weight mechanism, the balance weight mechanism is composed of a horizontal balance weight block and two hinged rotary balance weight blocks, an adjusting type quick disassembly assembly is arranged between the horizontal balance weight block and the two hinged rotary balance weight blocks, and the adjusting type quick disassembly assembly comprises a driving gear, a driven gear B, a driven gear C, a winding wheel and a steel wire rope. The reel can be synchronously driven to tighten or release the steel wire rope by rotating the overturning handle at the end part of the driving gear, the rotating balancing weight is dragged to quickly clamp or separate from the crankshaft body, and a silica gel non-slip mat is arranged on the inner wall of the rotating balancing weight to enhance the friction force. The problems that a traditional bolt fixing mode is low in efficiency and high in tool dependence are solved, and the maintenance efficiency of an engine in a cabin is remarkably improved.

A crankshaft (1, 40) for an internal combustion engine including variable compression ratio comprises a main journal, a first crankpin (3a, 43a), a first and second crank web (4a, 4b, 44a, 44b) at opposite sides of the first crankpin (3a, 43a), a second crankpin (3b, 43b) and a third and fourth crank web (4c, 4d, 44c, 44d) at opposite sides of the second crankpin (3b, 43b) The crankshaft also includes a first eccentric member (6a, 45a) which is rotatably mounted on the first crankpin (3a, 43a) and a second eccentric member (6b, 45b) which is rotatably mounted on the second crankpin (3b, 43b) and a transfer shaft (19, 50) which extends through the second and third crank web (4b, 4c, 44b, 44c) and which is rotatable with respect to the second and third crank web (4b, 4c, 44b, 44c) about a transfer shaft axis. An external first transfer gear (18, 52) is fixed to the transfer shaft (19, 50) at a side of the second crank web (4b, 44b) where the first eccentric member (6a, 45a) is located and an external second transfer gear (21, 49) is fixed to the transfer shaft (19, 50) at a side of the third crank web (21, 44c) where the second eccentric member (6b, 45b) is located. The first and second eccentric members (6a, 6b, 45a, 45b) are drivably coupled to each other through the transfer shaft (19, 50). The first and second transfer gears (18, 21, 47, 48) mesh with external first and second intermediate transfer gears (17, 22, 51), respectively, which in turn mesh with the first and second eccentric member gears (10, 23, 47, 48). The first and second intermediate transfer gears (17, 22, 51) are rotatably mounted to the second and third crank webs (4b, 4c, 44b, 44c), respectively.

(Main claim - crankshaft + center bearing) Crankshaft fusion arrangement (1) for a two-cylinder two-stroke reciprocating piston engine, characterized in that, that a one-piece crankshaft is made up of an inner part of a first shaft type and outer parts of a second shaft type, wherein shortened crankpins (2) connect the parts to each other in a form-fit and / or material-fit manner, the crankshaft is designed for a split center bearing support (3), and the arrangement can be inserted laterally into an unmodified original single-cylinder engine housing (7).

The utility model relates to the technical field of crankshafts, in particular to a fast oiling compressor crankshaft which comprises a first bearing shaft, a first crank arm, a connecting rod journal, a second crank arm, a second bearing shaft and a power shaft which are fixedly arranged in sequence, and an eccentric groove is formed in one side end face of the second crank arm; the eccentric groove is of an arc-shaped structure, extends in the length direction of the second crank arm body and is used for throwing lubricating oil in the compressor in the direction away from the second crank arm, and the maintenance cost of the crankshaft can be reduced while the crankshaft can be lubricated through rapid oiling.

The utility model relates to the technical field of machinery, in particular to a crankshaft assembly with a reinforced main journal structure, which comprises a first main journal, a connecting mechanism, a second main journal, a gear, a reinforced sleeve and a reinforced block, the gear is arranged on the side, close to the connecting mechanism, outside the first main journal, the reinforcing sleeve is arranged on the side, away from the second main journal, outside the first main journal, and the reinforcing block is arranged on the side, away from the first main journal, of the second main journal. The reinforcing sleeve and the reinforcing block can respectively reinforce the structural strength outside the first main journal and the second main journal, so that the abrasion of the first main journal and the second main journal can be reduced, and the phenomenon that the first main journal and the second main journal are fractured due to abrasion is avoided.

A self-lubricating crankshaft belongs to the technical field of crankshaft self-lubrication for crankshaft manufacturing and is characterized by comprising a crankshaft body and a spindle oil hole formed in the circle center of the surface of the left side of the crankshaft body, and a crankshaft inner cavity is formed in the circle center of the surface of the right side of the spindle oil hole. A plurality of oil outlet holes are evenly distributed in the periphery of the inner side surface of the crankshaft inner cavity, sealing devices are inserted in the circle centers of the outer side surfaces of the oil outlet holes, a balance end disc is connected to the circle center of the right side surface of the crankshaft body, and an eccentric shaft body is connected to the edge of the right side surface of the balance end disc; when the lubricating oil is injected, the lubricating oil can be prevented from being discharged from the oil hole, and when the crankshaft is rotated, the lubricating oil on the centrifugal turntable can be scattered and rapidly coated on the crankshaft.

The utility model relates to the technical field of machinery, in particular to a crankshaft assembly with a detachable connecting rod journal, which comprises a connecting rod journal and a structural component, the structural assembly comprises a left handle, a right handle, a left crankshaft, a right crankshaft, a gear, a left rectangular block, a right rectangular block and an installation bolt, the left rectangular block is detachably connected with the connecting rod journal, the right rectangular block is detachably connected with the connecting rod journal and located on the side, away from the left rectangular block, of the connecting rod journal, and the right handle is fixedly installed on the side, away from the left rectangular block, of the right rectangular block. The gear is fixedly installed on the side, close to the right handle, of the right crankshaft, the left handle is fixedly installed on the side, away from the right handle, of the left rectangular block, the installation bolt is in threaded connection with the left handle and the right handle, the left crankshaft is fixedly installed on the side, away from the right handle, of the left handle, and therefore the using effect of the equipment is improved.

The utility model relates to the technical field of compressors, in particular to a crankshaft structure for a compressor and the compressor, the crankshaft structure for the compressor comprises a core part, and the hardness of the core part is H1; and an outer peripheral part formed on the outer periphery of the core part, the hardness of the outer peripheral part being H2, the hardness ratio of the hardness H2 of the outer peripheral part to the hardness H1 of the core part being h, 1.95 < h < 2.22 or 5.6 < = h < = 6.2. The crankshaft structure for the compressor and the compressor can solve the problem of how to improve the wear resistance of the matching part of the crankshaft.

Split crankshaft in inexpensive design for reciprocating piston engines with very high operating pressures with undivided connecting rod bearings (6) and undivided crankshaft bearings (8) into which floating bearing rings (9) can be inserted to reduce the difference speed of the bearing surfaces to each other and which can be assembled and disassembled as often as desired.