421results 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 provides a self-lubricating crankshaft and refrigeration equipment, and relates to the field of refrigeration equipment, an annular concave main shaft oil storage groove is formed by main shaft part sections where oil storage section oil grooves are distributed, the oil storage space is increased, and the lead of the oil storage section oil grooves is smaller than that of other sections of spiral oil grooves, so that the speed of refrigerating machine oil is slower during backflow; the eccentric oil storage groove formed in the end face of the connecting rod shaft is communicated with the eccentric section oil groove through the oil outlet hole, the function of storing the refrigerating machine oil is achieved, and when restarting is conducted after shutdown, the stored refrigerating machine oil can be put into use rapidly and can be supplied to the eccentric part and the main shaft part in time to provide initial lubrication. Dry friction at the starting moment is reduced, the reliability of the crankshaft during starting is improved, and poor lubrication caused by insufficient oil supply is avoided.

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.

Provided is a power transmission apparatus for a hybrid vehicle, the power transmission apparatus including a connecting shaft having an edge portion connected to a mass by a connecting plate, the connecting shaft being coupled to an outer side of a first rotor shaft connected to a first rotor of a first motor, and a drive plate positioned adjacent to a crankshaft while facing the connecting shaft, the drive plate being configured to connect the mass and the crankshaft.

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.

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.

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.

The utility model relates to the technical field of crankshafts, in particular to a combined crankshaft. Comprising a left crank, a right crank and an auxiliary assembly, the auxiliary assembly comprises a connecting rod, a roller pin, an auxiliary key, a chain wheel, a chain wheel positioning pin and a matched bearing, a splayed part is arranged at the front end of the chain wheel, and a threaded hole is formed in the top of the chain wheel positioning pin. Shaking caused by deformation of a matched flat key of the chain wheel and the left crank can be avoided, stable transmission is facilitated, the splayed part on the front side of the chain wheel can directly abut against and be matched with the inner ring of the bearing, a spacer bush does not need to be additionally arranged, the structure is simplified and optimized, then a chain wheel positioning structure can be optimized, and more stable transmission of a crankshaft connecting rod is facilitated.

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.

The utility model relates to the technical field of crankshafts, and discloses a durable crankshaft which comprises a main journal, a crank and a connecting rod journal, an arc-shaped opening is formed in the crank, a protection mechanism used for protecting the connecting rod journal is arranged on the crank, a lubricating mechanism is arranged on the protection mechanism, the protection mechanism comprises a wear-resisting arc plate, and the wear-resisting arc plate is provided with a wear-resisting groove. According to the durable crankshaft, the two sets of wear-resistant arc plates are additionally arranged on the outer wall of the connecting rod journal, so that the connecting rod journal can be protected, the situation that the connecting rod excessively abrades the connecting rod journal in the operation process of the crankshaft is avoided, and the service life of the crankshaft is prolonged; the wear-resistant arc plate can be conveniently pulled out from the position between the connecting rod journal and the connecting rod by forming the arc-shaped opening, the replaced wear-resistant arc plate can be inserted into the position between the connecting rod journal and the connecting rod again, the wear-resistant arc plate can be replaced without disassembling the connecting rod, and later repair and maintenance are facilitated.

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 utility model discloses a compressor crankshaft, which belongs to the technical field of crankshafts and comprises a crankshaft body, wherein the crankshaft body comprises a first connecting shaft, a second connecting shaft and a third connecting shaft, wherein the first connecting shaft is connected to the left end of the second connecting shaft through a connecting block, and the third connecting shaft is connected to the right end of the second connecting shaft through a connecting block, the first connecting shaft and the second connecting shaft are coaxial, a distance between a central axis of the second connecting shaft and a central axis of the first connecting shaft is less than a sum of a radius of the central axis of the second connecting shaft and the first connecting shaft and is greater than zero, and the center of gravity of the crankshaft body is located on the central axis of the first connecting shaft. When rotating at no load, since the center of gravity of the crankshaft body is located on the central axis of the first connecting shaft, the overall operation is stable, which is convenient for early debugging and reduces interference, and a connecting rod can be subsequently installed on the second connecting shaft to be suitable for the compressor.

The present invention provides a compressor and an air conditioner having the same. The compressor includes a pump body structure, the pump body structure includes a crankshaft, the crankshaft includes at least one eccentric portion, the thrust surface area of ​​the eccentric portion is S, the eccentric torque received by the crankshaft is T, and the rated cooling capacity of the compressor is Q, wherein 30≤Q / (T×S)≤60. In combination with the rated cooling capacity of the compressor and the optimization of the structure of the eccentric portion on the crankshaft, the effect of the eccentric torque received by the crankshaft is improved, making the compressor more stable during operation and being able to effectively reduce the noise of the compressor. The compressor adopts this structure, which greatly reduces the fluctuation of the resistance torque of the compressor at ultra-high speed, improves the problems of increased noise, vibration and deflection of the compressor, and at the same time maximizes the energy efficiency of the compressor, fundamentally ensuring the application reliability of the miniaturized compressor.

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 utility model provides a crankshaft without lubrication dead angles, which comprises a long shaft, an eccentric shaft arranged at the upper end of the long shaft, an oil pumping hole arranged at the bottom end of the long shaft, an oil hole A arranged on the outer wall of the lower end of the long shaft and communicated with the oil pumping hole, a spiral oil groove A arranged on the outer wall of the long shaft, and an oil hole B arranged on the outer wall surface of the long shaft and positioned below the oil hole A, the oil hole B corresponds to the lower edge of the crankshaft hole of the cylinder seat and is communicated with the oil pumping hole; according to the utility model, the parts which cannot be lubricated by the cylinder seat and the long shaft of the crankshaft are fully lubricated, so that the parts are prevented from being abraded, and the reliability and the service life of the compressor are improved.

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.

An assembly of a crankshaft and a connecting rod, the crankshaft being rotatable about a crankshaft axis and comprising a crank pin (5) and a pair of crank webs (6). The connecting rod comprising a big end (10) connected to the crank pin by a big end bearing (11) located between the pair of crank webs and a small end for connecting the connecting rod to a piston. A reservoir (21) for lubricating oil being provided between the big end and the crank pin and a jetting passage (30) being provided for jetting, in use, a piston cooling jet of lubricating oil from the reservoir towards a back face of a piston connected in use to the small end of the connecting rod. The jetting passage comprising two cut-outs, a first cut-out (32) located in a side face (18) of the big end and a second cut-out (33) located in an inwardly-directed side face (19) of the crank web that faces said side face of the big end, the second cut-out defining an outlet (34) of the jetting passage. The first cut-out extends from an inner edge (36) of the side face only part way towards an outer edge (37) of the side face and the second cut-out extends from the outlet at an outer edge (38) of the inwardly-directed side face only part way towards an inner edge (39) of the inwardly-directed side face, such that the jetting passage is established when rotation of the big end about the crank pin overlaps the first cut-out with the second cut-out.

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 invention relates to the technical field of nodular cast iron and a preparation method thereof, and discloses a preparation method and application of a nodular cast iron material with high elastic modulus, and the material comprises the following components in percentage by mass: 1.8-2.3% of C, 1.3-2.2% of Si, 0.3-0.7% of Mn, 0.002-0.005% of Bi, 0.002-0.01% of Sb, less than 0.06% of P, less than 0.2% of S and the balance of Fe. The preparation method comprises the following steps: step 1, smelting and casting to obtain a casting blank; secondly, the casting blank is rapidly discharged out of the furnace and cooled in air after being subjected to first-stage annealing and second-stage annealing in sequence; and thirdly, oxide skin is removed through shot blasting, and the nodular cast iron material with the high elastic modulus is obtained. According to the scheme, by optimizing the component proportion and performing two-stage annealing after smelting and casting, a matrix structure with high graphite nodule roundness, uniform components and good continuity can be formed, the elasticity modulus of the nodular cast iron material is effectively improved, the nodular cast iron material can conveniently and effectively bear the long-time continuous operation load when replacing alloy steel to manufacture a crankshaft, and the service life of the crankshaft is prolonged. And the alternating stress tolerance performance is improved, so that the crankshaft cost is reduced, and light weight is realized.

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.

The utility model relates to the technical field of crankshafts, and discloses a crankshaft structure which comprises a crankshaft body and a dismounting assembly, the dismounting assembly comprises a mounting buckle, a dismounting block, a rubber pad, a fixing plate, a bearing, screw rods and a handle, the dismounting block is movably connected in the mounting buckle, and the screw rods are in threaded connection with the two sides of the mounting buckle. According to the crankshaft structure, through mutual cooperative use of the arranged dismounting assemblies, the effect of dismounting the protection frame is achieved, a dismounting block is placed in a mounting buckle, then a handle is rotated to drive a screw rod to rotate, so that a bearing is driven to rotate, and a fixing plate is conveniently driven to move left and right; and rubber pads are moved to the two sides of a dismounting block, so that the dismounting block is conveniently clamped, the problem that the dismounting block falls off during working is avoided as much as possible, a protection frame is conveniently fixed, a connector is conveniently protected through the protection frame, and the protection performance of the structure is improved.

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