27results about "Cranks" patented technology

The application discloses an adjustable crank structure, which comprises an adjusting block mounting seat, an eccentric adjusting block connected to the adjusting block mounting seat, a rotating axis of the adjusting block mounting seat being parallel to a center line of the eccentric adjusting block with a spacing formed between the rotating axis and the center line, and a motion characteristic of the structure being changed by adjusting the spacing, a connecting rod rotatably connected to the eccentric adjusting block, the connecting rod being capable of reciprocating under the driving of the eccentric adjusting block, power transmission and motion conversion being realized, a connecting shaft assembly hinged with the connecting rod, the connecting shaft assembly being used for connecting a target force receiving shaft, and two adjusting bolts screwed into specific threaded holes of the adjusting block mounting seat and abutting against specific parts of the eccentric adjusting block. The adjusting bolts are rotated and moved along specific directions on the adjusting block mounting seat, the spacing is adjusted by the two adjusting bolts, and thus flexible adjustment of motion parameters of the crank structure is realized.

The utility model discloses a modularized crankshaft and an RV speed reducer, and belongs to the field of speed reducers. The shape memory alloy assembly is sleeved outside the central shaft; the first shaft sleeve assembly and the second shaft sleeve assembly are detachably connected outside the shape memory alloy assembly in a sleeving mode, and the first shaft sleeve assembly abuts against the second shaft sleeve assembly. The first shaft sleeve assembly and the second shaft sleeve assembly are the same in structure and each comprise a first shaft sleeve body detachably connected to the outside of the shape memory alloy assembly in a sleeving mode. And the second shaft sleeve body is sleeved outside the first shaft sleeve body. A first flat potential is arranged outside the first shaft sleeve body, a second flat potential is arranged in the second shaft sleeve body, and the first flat potential abuts against the second flat potential. The utility model has the technical effects that the modular performance is good, and the connection performance is good.

A gear motor of an electrical assistance device, in particular for a cycle, includes a gear reducer and an electric motor including a stator and a rotor integral in rotation with a shaft forming the input of the gear reducer. The gear reducer includes a toothed crown integral with the stator, a satellite-carrier fitted to pivot around the shaft, and forming the output of the gear reducer, at least two planet wheels fitted firstly on respective eccentric cams via a respective bearing. The ge ar motor also includes a rotor bearing to center a first end of the shaft on a fixed shaft of the gear motor, and a bearing device including deformable rolling elements. The bearing device is interposed between the satellite-carrier and a cylindrical receptacle which is integral with the stator, to center the shaft in the cylindrical receptacle at a second end.

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.

The invention provides a two-stage compression air compressor, and belongs to the technical field of air compressors. The two-stage oil-free air compressor solves the technical problems that an existing two-stage oil-free air compressor is remarkable in vibration due to unbalanced movement of a piston, fixed in output pressure and lack of adjustment flexibility. The air compressor comprises a driving motor, wherein two output shaft sections of the driving motor respectively drive two first-stage air cylinder assemblies located on the same side of the motor and two second-stage air cylinder assemblies located on the other side of the motor at the same time; the corresponding air cavities of the air cylinder assemblies on the two sides communicate with each other, and the first-stage air outlet cavity and the second-stage air inlet cavity are connected through an intercooling air pipe. Through the opposite arrangement of the two first-stage cylinders and the two second-stage cylinders and the specific phase design, reciprocating inertia force is counteracted in real time, and vibration and noise are greatly reduced; meanwhile, by means of the parallel connection characteristic of the systems on the two sides, the output pressure and power can be conveniently adjusted by controlling operation of the motor on the single side. The device has the advantages of being stable in operation, high in reliability, adjustable in pressure output and high in adaptability.

The utility model provides an eccentric mechanism of an air compressor, and belongs to the technical field of air compressors. The air compressor solves the problems that an existing air compressor is low in acting efficiency, and stress is unbalanced when a main shaft works. The eccentric mechanism of the air compressor comprises a main shaft, one end of the main shaft is sleeved with a first eccentric wheel, a second eccentric wheel, a third eccentric wheel and a fourth eccentric wheel, and the first eccentric wheel, the second eccentric wheel, the third eccentric wheel and the fourth eccentric wheel are freely and smoothly arranged in the axial direction of the main shaft. The second eccentric wheel deflects around the main shaft by an angle alpha which is larger than or equal to 0 degree and smaller than or equal to 180 degrees relative to the first eccentric wheel, the third eccentric wheel deflects around the main shaft by 180 degrees relative to the first eccentric wheel, and the fourth eccentric wheel deflects around the main shaft by 180 degrees relative to the second eccentric wheel. According to the structure, the vibration and noise of the whole machine during working are reduced, the working efficiency of the air compressor is improved, the arrangement of the four eccentric wheels on the main shaft can be changed in any sequence according to the structural design of the air compressor, and the position arrangement flexibility of the four eccentric wheels is improved.

The utility model discloses an eccentric wheel structure which comprises an upper ring body and a lower ring body, the upper ring body is arranged above the lower ring body, a connecting hole is formed in the center of the upper ring body and the center of the lower ring body, an outer ring on one side of the upper ring body is a perfect circular arc, an outer ring on the other side of the upper ring body is a non-perfect circular arc, and a semicircular disc-shaped protruding block corresponding to the non-perfect circular arc is arranged on the lower ring body. A plurality of grooves are formed in the connecting hole; the whole body is integrally formed through metal powder sintering. The eccentric wheel is reasonable and ingenious in structural design, the integrally-formed structure is high in structural strength, the contact face of the connecting part is increased due to superposition of the upper ring body and the lower ring body, the eccentric wheel is not prone to deformation, and the performance of the eccentric wheel is improved.

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 utility model relates to the technical field of crankshafts, in particular to a crankshaft of a double-cylinder outboard engine, which comprises a first crank throw and a second crank throw, the first crank throw comprises a first crank wall A and a first crank wall B, the first crank wall B is arranged on one side of the first crank wall A, and first inserting columns are arranged on one side of the first crank wall A and one side of the first crank wall B; the first crank wall A and the first crank wall B are connected together through a first connecting sleeve and a first inserting column to form a complete first crank throw, the second crank wall A and the second crank wall B form a complete second crank throw through a second connecting sleeve and a second inserting column, and the first crank throw and the second crank throw are installed together through a crank neck sleeve and a short butt joint column. The front end shaft is installed on one side of the first crank throw through the second butt-joint groove and the long butt-joint column, the rear end shaft is installed on one side of the second crank throw through the first butt-joint groove and the middle butt-joint column, installation and disassembly are convenient, and the rear end shaft can be independently disassembled to be replaced.

Provided is a sliding member capable of stably reducing the frictional resistance of a sliding surface accompanying eccentric rotation. A sliding member (7) is in the shape of a circular ring in which a high-pressure fluid and a low-pressure fluid exist on the inner and outer surfaces, has a sliding surface (7a) that slides in opposition to each other accompanying eccentric rotation, and in which a plurality of high-pressure grooves (71) that open to a space (50) in which the high-pressure fluid exists and a plurality of low-pressure grooves (72) that open to a space (20) in which the low-pressure fluid exists are respectively provided on the sliding surface (7a) in the circumferential direction.

The improved driving device for the washing tower comprises a motor, a speed reducer and an eccentric wheel assembly, one side of the eccentric wheel assembly is connected with an adjusting support a, a seat frame and a rolling bearing seat, the other side of the eccentric wheel assembly is connected with the motor through a pin coupling a, and the motor and the speed reducer are connected together through a pin coupling b. The eccentric wheel assembly comprises eccentric wheels, an eccentric shaft and a balancing weight, a rolling bearing is arranged on the eccentric shaft, the eccentric wheels are symmetrically installed on the two sides of the rolling bearing, three rows of holes are symmetrically formed in the eccentric shaft, and the balancing weight is connected through the three rows of holes. The eccentric wheel assembly is arranged on the driving device, the eccentric wheels are symmetrically arranged, so that the torque on the eccentric shaft is in a static balance state, the output torque of the speed reducer is stable, the tooth hitting phenomenon of a low-speed end gear disappears, the driving device does not generate other noise except the noise of the motor and the speed reducer, and the load requirement of the motor is stable; the motor current is stable.

The utility model provides an air compressor, and belongs to the technical field of air compressors. The single-head four-cylinder air compressor solves the problems that an existing single-head four-cylinder air compressor is large in vibration and noise in the working process. The air compressor comprises a main shaft, two first connecting rod assemblies and two second connecting rod assemblies, the two first connecting rod assemblies and the two second connecting rod assemblies are distributed around the main shaft in a crossed mode, the front end of the main shaft is sleeved with a first crank and a second crank, the first crank comprises two first eccentric wheels, and the second crank comprises two second eccentric wheels. The two first connecting rod assemblies are arranged on the corresponding first eccentric wheels in a sleeving mode respectively, the two second connecting rod assemblies are arranged on the corresponding second eccentric wheels in a sleeving mode respectively, and after the main shaft rotates, the two first connecting rod assemblies and the two second connecting rod assemblies can extend outwards to the limiting positions at the same time or retract inwards to the limiting positions at the same time at different rotating angles respectively. According to the structure, vibration and noise of the whole machine during working are reduced, force balance is achieved, the air compressor does work twice when the main shaft rotates by one circle, and good work efficiency is guaranteed.

The application relates to the field of inertial type vibration exciters, in particular to a variable moment eccentric wheel. The application provides a variable moment eccentric wheel which is applied to an inertial type vibration exciter and comprises an axle end mounting plate and a linear slide table module. A key groove hole is formed in the center position of the axle end mounting plate and is used for being connected with a driving shaft of the inertial type vibration exciter through a key, so that the circumferential fixing between the axle end mounting plate and the driving shaft of the inertial type vibration exciter is realized, and the axial fixing between the axle end mounting plate and the driving shaft of the inertial type vibration exciter is kept. Two linear slide table modules are symmetrically mounted on the front surface of the axle end mounting plate, four linear slide table modules are symmetrically mounted on the front and back surfaces of the axle end mounting plate, the counterweight sliding block position of each linear slide table module is adjustable, and the eccentric mass moment of the inertial type vibration exciter is changed. The variable moment eccentric wheel provided by the application can upgrade the traditional eccentric block and the variable force wheel device, and realizes the high-precision and high-reliability on-line stepless adjustment of the eccentric mass moment.

A crankshaft (1, 40, 80) for an internal combustion engine including variable compression ratio comprises a main journal (2, 42, 82) including a crankshaft axis (5, 41, 81), a crankpin (3, 43) including a crankpin axis (7) and a crank web (4, 44, 84) located between the main journal (2, 42, 82) and the crankpin (3, 43, 83) in longitudinal direction of the crankshaft axis (5, 41, 81) and an eccentric member (6, 45, 85) which is mounted on the crankpin (3, 43, 83) and rotatable with respect to the crankpin (3, 43) about the crankpin axis (7) The eccentric member (6, 45, 85) comprises a bearing portion (8, 46, 86) for supporting a big end of a connecting rod, which bearing portion (8, 46, 86) has a centreline extending parallel to the crankpin axis (7), and an external eccentric member gear (9, 48, 87) between the bearing portion (8, 46, 86) and the crank web (4, 44, 84) as seen in longitudinal direction of the crankshaft axis (5, 41, 81). The eccentric member gear (6, 45, 85) is driveably coupled to an external central gear (12, 49, 90) through an external intermediate gear (11, 51, 89). The central gear (12, 49, 90) is fixed to a central shaft (14, 50, 92) which extends through the main journal (2, 42, 82) and through the crank web (4, 44, 84) and which is rotatable with respect to the main journal (2, 42, 82) and the crank web (4, 44, 84). The intermediate gear (11, 51, 89) is rotatably mounted to the crank web (4, 44, 84) and meshes with both the eccentric member gear (9, 48, 87) and the central gear (12, 49, 90). The intermediate gear (11, 51, 89) is mounted to an intermediate gear shaft (13, 60, 91) that is radially supported by both the crank web (4) and a separate supporting element (16), which is attached to the crank web (4) at a circumferential side thereof or by a separate supporting element (53, 94), which is attached to the crank web (44) at a side where the eccentric member (45) is located or at a circumferential side of the crank web (84).

A non-uniform stroke duration apparatus includes a crankshaft including a first main crankshaft and a second main crankshaft coaxially disposed with the first main crankshaft and constantly rotating at the same speed as the first main crankshaft, and having a predetermined crankshaft rotation center, a plurality of pin journal units disposed between the first main crankshaft and the second main crankshaft, and an eccentric rotation transmitter including an internal bracket that rotates around an eccentric axis formed by a pivot angle in a predetermined direction and spaced apart from the crankshaft rotation center by a predetermined eccentric distance, and changing a relative rotation speed of the pin journal units with respect to the crankshaft.

An adjustable stroke mechanism has a housing with a central axis and a wall enclosing a cavity. At least one counterweight is movably disposed within the cavity. A mounting assembly is disposed within the cavity. The mounting assembly has a workpiece attachment mechanism. A stroke adjustor couples the at least one counterweight with the mounting assembly. The stroke adjustor enables the counterweight and mounting assembly to move with respect to one another such that a distance between the counterweight and the mounting assembly is variably adjusted which, in turn, variably adjusts a stroke radius of the workpiece attachment mechanism with respect to the central axis of the housing.

The utility model relates to the technical field of chain wheel cranks and discloses an anti-dislocation chain wheel crank which comprises a plurality of chain wheels, cranks are arranged on the two sides of the chain wheels, a baffle disc is arranged on one side face of each chain wheel, a circle of connecting plate is fixedly connected to the inner ring of each baffle disc, and the connecting plates are arranged on the two sides of the chain wheels. A threaded hole is formed in the surface of each connecting plate, a plurality of threaded grooves corresponding to the threaded holes are formed in the surface of the chain wheel on the outermost side, and bolts are installed between the corresponding threaded holes and the threaded grooves in a threaded mode. The inner portions of the two cranks are both hollow, openings are formed in one ends of the two cranks, extension handles are installed in the two cranks in a sliding mode, the overall length of the cranks and the extension handles can be rapidly and conveniently adjusted in the using process, and the multifunctional folding chair is suitable for being used by different crowds and high in applicability.

The utility model discloses a steering system eccentric wheel, and particularly relates to the technical field of steering system eccentric wheels, the steering system eccentric wheel comprises a supporting disc, an eccentric supporting assembly is arranged on the supporting disc, and the eccentric supporting assembly comprises a mounting disc arranged at the top of the supporting disc. According to the utility model, parts such as the mounting disc and the limiting sleeve can be driven to rotate around the axis of the supporting disc by detaching the positioning pin or the bolt in the limiting hole, so that large-range coarse adjustment is realized; and the bolts matched with the adjusting grooves and the positioning holes are loosened, so that the bolts move along the arc-shaped adjusting grooves, and small-range fine adjustment can be realized. According to the adjusting mode, the problem that the angle of an existing eccentric wheel cannot be adjusted is effectively solved, the differential requirements of steering systems of different vehicle types for the eccentric angle can be met, the purchase and inventory cost of parts is reduced, after the steering system is abraded, the transmission error can be compensated by adjusting the eccentric angle, and the transmission efficiency is improved. And the steering precision can be recovered without replacing parts.

An eccentric slider for a crankshaft, a scroll compressor, and a temperature control device are provided. The eccentric slider has a slider body. An assembly hole is formed in the slider body. The assembly hole allows insertion of an eccentric shaft segment of the crankshaft. An outer peripheral wall surface of the slider body has a bearing surface and a non-bearing surface opposite to the bearing surface. The bearing surface drives an orbiting scroll. A hollow portion is formed on the non-bearing surface. The hollow portion accommodates an oil.

The application discloses an eccentric wheel mechanism with adjustable amplitude and a massage device, which comprises a motor, an eccentric wheel assembly, a swing arm and a control assembly; the eccentric wheel assembly comprises an eccentric wheel, a center adjusting slider and an adjusting screw; the eccentric wheel and the swing arm are rotatably assembled on a first axis; the center adjusting slider, the control assembly and the motor are assembled on a second axis, and the eccentric wheel assembly is driven to rotate by the motor; the control assembly has a first state of being connected with the adjusting screw and a second state of being separated from the adjusting screw; in the first state, the control assembly drives the center adjusting slider to relatively move with the eccentric wheel to change the distance between the first axis and the second axis and change the amplitude of the swing arm. The eccentric wheel mechanism can adjust the eccentric distance and is applied to a fascia gun, so that the amplitude of the massage head of the fascia gun can be adjusted, that is, the massage depth is adjusted, and the use requirements of different users are met.

The invention relates to a drive device (10) for an output movement of a displacement element, comprising a connecting rod (12) which is connected to the displacement element. The drive device (10) comprises a crank (22) and an eccentric unit (26). The eccentric unit (26) has a mechanical setting device (36), comprising a setting element (38) which acts on an eccentric element (40), wherein the setting element (36) is designed such that the setting element (38) can adopt different setting positions relative to the crank rotational axis, specifically position and / or orientation, wherein the setting element (38) can be locked in said setting position, and wherein an orbit of the eye-type bearing axis (ALA) about the crank rotational axis (KDA) is allocated to a setting position.

The present application relates to a full-packed cylindrical roller bearing roller loading device and loading method for crankshaft, the device is characterized by: the upper support, eccentric adjusting base and base are sequentially fixed from top to bottom; the inner hole of the upper support and the inner hole of the eccentric adjusting base are aligned from top to bottom, forming a crankshaft accommodating cavity; an upper eccentric adjusting screw and a lower eccentric adjusting screw are respectively installed in each upper radial threaded hole of the eccentric adjusting base and each lower radial threaded hole of the base; the upper end of the roller supporting table part of the upper support is provided with a roller accommodating sliding groove, which is tangent to the side surface of the inner hole of the annular seat part; a roller limiting block is clamped in the outer side clamping groove of the roller accommodating sliding groove close to the inner hole of the annular seat part of the upper support; the roller pushing sliding block is movably inserted and assembled with the roller accommodating sliding groove; an oil inlet is arranged on the outer side of the roller supporting table part, and the oil inlet is connected with an externally arranged lubricating oil conveying structure. The present application improves the roller loading efficiency and reduces the loading difficulty.

The utility model relates to the technical field of crankshaft machining, in particular to a balance structure for machining a crankshaft of a vehicle-mounted air compressor, which comprises a crank wall and a rotary drum, one end of the crank wall is connected with a first connecting shaft or a second connecting shaft through an abutting ring, and the first connecting shaft and the second connecting shaft are both connected with flange plates. The surface of the flange plate is fixedly connected with a fixing block or provided with an inserting groove, and a fixing column is connected into the inserting groove through a spring. The crankshaft has the advantages that the first connecting shaft and the second connecting shaft are fixed through the flange plates and the screws, meanwhile, the fixing blocks on the surfaces of the flange plates can be fixed by the fixing columns in the other flange plate, at the moment, the crankshaft can continue to be fixed under the action of the fixing blocks commemorative that the screws are loosened due to long-term use, and therefore the crankshaft is prevented from being damaged. Therefore, the connection between the crankshafts is not disconnected, and the work is continued.

An internal combustion engine (1) including variable compression ratio comprises a crankcase, a crankshaft (3) including a main portion (2) which is supported by the crankcase and rotatable thereto about a crankshaft axis (6), a crankpin (4) and a crank web (5) located between the main portion (2) and the crankpin (4) in longitudinal direction of the crankshaft axis (6), a connecting rod (12) including a big end (13) and an eccentric member (8) which is mounted on the crankpin (4) and rotatable with respect to the crankpin (4) about a crankpin axis (7). The eccentric member (8) comprises a bearing portion (9) including a centreline (10) parallel to the crankpin axis (7) and an external eccentric member gear (11) between the bearing portion (9) and the crank web (5) of the crankshaft (3) as seen in longitudinal direction of the crankshaft axis (6). The eccentric member gear (11) has a larger diameter than the bearing portion (9) and is drivably connected to a gear train (18, 19) for rotating the eccentric member (8) with respect to the crankpin (4). The big end (13) is rotatably mounted on the bearing portion (9) through big end rollers (14) which are held at a distance from each other in circumferential direction about the centreline (10) of the bearing portion (9) through a cage (15). The cage has opposite retaining members (16a, 16b) for holding the big end rollers (14) in axial direction thereof and a big end abutment (17) between the eccentric member gear (11) and the big end (13) in axial direction of the crankpin axis (7) so as to stop a movement of the big end (13) with respect to the big end rollers (14) in a direction from the bearing portion (9) towards the eccentric member gear (11).

The utility model relates to the technical field of eccentric bushings, and discloses an eccentricity adjusting structure and an eccentric bushing, the eccentricity adjusting structure comprises a mounting cover, a gear, a pressing plate and a positioning screw rod, the mounting cover is provided with a straight notch, and one side in the straight notch is provided with a straight rack which is transversely arranged; the gear is located in the straight notch and meshed with the spur rack, the gear is fixedly connected with the shaft rod, the position of the gear relative to the mounting cover is adjusted through meshing of the gear and the spur rack, then the distance between the shaft rod and the center of the eccentric sleeve is adjusted, and the eccentricity is adjusted; the pressing plate is used for limiting the gear in a space defined by the mounting cover and the pressing plate; and the positioning screw rod is used for positioning and fixing the gear on the mounting cover. According to the eccentricity adjusting structure and the eccentric sleeve, high-precision, convenient and repeatable eccentricity adjustment is achieved, and reliable connection, stable positioning and simple and convenient operation are guaranteed through the unique component connection, positioning, fixing and mounting modes of the eccentricity adjusting structure and the eccentric sleeve.

The valve rocker arm shaft comprises an outer shell, a shell cover and a crankshaft assembly, the upper end of the outer shell is covered with the shell cover, an installation interval is arranged at the connecting position of the outer shell and the shell cover, and the crankshaft assembly is installed in the installation interval; a fixing hole is formed in the lower side of the shell, and a valve rocker arm shaft is arranged in the fixing hole; the crankshaft assembly comprises a crankshaft rod, a first oil throwing piece is arranged on the crankshaft rod, and an oil guide plate is arranged on one side of the first oil throwing piece. By arranging the oil guide plate, engine oil can be accelerated to enter the crankshaft assembly, the effect of lubricating the crankshaft assembly faster is achieved in the process, and the service life of the valve rocker arm shaft of the gasoline engine crankcase and the gasoline engine crankcase comprising the valve rocker arm shaft is prolonged.