553 results about "Camshaft" patented technology

The invention discloses a self-clearance-eliminating cycloidal pin gear speed reducer, and aims to solve the double pain points that in the prior art, an assembly clearance is difficult to control, and the clearance cannot be compensated after abrasion. The speed reducer comprises a machine shell, a main bearing, an output flange, a cycloidal gear, a conical pin and an elastic pressing piece, and is characterized in that the conical pin, cycloidal teeth of the cycloidal gear and a pin groove of the machine shell are all provided with the same taper, the elastic pressing piece is installed on the machine shell and exerts pre-compression force on the pin, and the elastic pressing piece, the conical pin and the pin are made to be tightly attached to eliminate an initial gap; after abrasion, the elastic pressing piece can push the conical pin needle to conduct self-adaptive gap compensation along the conical surface, and the meshing stability is guaranteed through the taper self-locking characteristic. Meanwhile, the structure can be flexibly matched with three transmission modes of'a first-stage planetary gear and a second-stage cycloid ', 'single-stage cycloid cam shaft driving' and'single-stage cycloid cam shaft and a cross slide block ', the effects of reducing machining and assembling cost, maintaining transmission precision for a long time and reducing maintenance loss are achieved, and the structure is suitable for the field of precision transmission.

The utility model discloses an oil-gas separation mechanism and an engine, the oil-gas separation mechanism comprises an air inlet cam shaft, a chain wheel, a centrifugal separation disc and a breather pipe, and the air inlet cam shaft is provided with a first channel penetrating through the two ends of the air inlet cam shaft; the chain wheel is meshed with a timing chain of an engine and used for driving the air inlet cam shaft to rotate. The centrifugal separation disc is connected with one end of the air inlet cam shaft and provided with a separation cavity, the separation cavity communicates with the first channel, fan blades are arranged in the separation cavity, the centrifugal separation disc rotates to suck mixed oil gas into the separation cavity, and the fan blades guide gas into the first channel and throw engine oil out of the separation cavity. The breather pipe communicates with the end, away from the centrifugal separation disc, of the first channel and is used for exhausting gas in the first channel. According to the oil-gas separation mechanism, the oil-gas separation structure can be arranged on the air inlet cam shaft, the space occupied by the oil-gas separation structure in an engine is reduced, the internal structure of the engine is simplified, and the manufacturing difficulty and manufacturing cost of the engine are reduced.

The invention provides a control method and device for consistency of all cylinders of an engine and a vehicle. The method comprises the steps that the rotating speed and torque of the engine are obtained, and the rotating speed and torque of the engine are obtained; determining that the engine is in a low-speed and low-load working condition under the condition that the engine rotating speed is in a first preset range and the engine torque is in a second preset range; under the condition that the engine is in the low-speed and low-load working condition, the camshaft phase is controlled to be delayed relative to the crankshaft phase, so that opening of an intake valve of the engine is delayed, and the problem that in the prior art, the actual EGR rate consistency of all cylinders of the engine is poor is solved.

A power tool may include a housing including first and second clamshell halves. The power tool may include a motor directly supported by the first and second clamshell halves. The power tool may include a gear assembly directly supported by the first and second clamshell halves and operably coupled to the motor. The power tool may include an impact mechanism disposed within the housing between the first and second clamshell halves and operably coupled to the gear assembly, the impact mechanism including a camshaft, an anvil rotationally supported by an anvil support for rotation about an axis, the anvil support being directly supported by the first and second clamshell halves, and a hammer configured to reciprocate along the camshaft and to impart rotational impacts to the anvil in response to rotation of the camshaft.

The disclosure relates to a bicycle transmission comprising an axle, such as a wheel axle or a countershaft in a crank transmission, configured to be non-rotatably fixed to a frame of the bicycle; at least one sun gear rotatably mounted about the axle; at least one clutch mechanism for selectively preventing rotation of the at least one sun gear in at least one direction of rotation about the axle; and a camshaft mounted inside the axle to actuate the at least one clutch mechanism.

The application provides a no-dead-corner camshaft cleaning device, which comprises a rack, a brushing bin arranged on the rack, a plurality of groups of mounting units arranged on the rack and driven to move in a ring direction by a conveying mechanism, a mounting plate arranged on the conveying mechanism, a brush rod detachably connected to the mounting plate through a quick-release assembly, a movable plate arranged on the mounting plate and capable of sliding transversely, a camshaft body rotatably arranged in a supporting frame on the movable plate and sleeved on the brush rod, a driving mechanism arranged on the rack and connected to the movable plate, the driving mechanism converting the sliding of the movable plate when passing through the brushing bin into driving the camshaft body to rotate along its axis and reciprocatingly slide, and the quick-release assembly and the driving mechanism being connected through a linkage assembly to convert the movement of the driving mechanism into driving the brush rod to rotate. The device can avoid the existence of a cleaning dead angle and improve the cleaning effect on the camshaft body.

The utility model discloses a heptagonal tool positioning structure for special alignment, and belongs to the technical field of engine alignment positioning tools. A heptagonal tool positioning structure is arranged on the camshaft body, the heptagonal tool positioning structure comprises a surface A, a surface B and a surface C, the surface A and the surface B are parallel to each other, the surface C is adjacent to the surface A and the surface B, and a two-dimensional code used for tracing the machining process is arranged on the surface C. According to the heptagonal tool positioning structure for special alignment, through the advantages of accurate positioning, reliable assembly, traceable quality, production optimization, product reliability, high adaptability and the like, the product quality, the production efficiency and the market competitiveness are effectively improved, and a powerful guarantee is provided for related production of camshafts.

The utility model discloses a waste paper smashing device for carton processing in the technical field of carton processing, which comprises a workbench, a cutting box and a slitting box, the cutting box is fixedly connected to the left side of the top of the workbench, the slitting box is fixedly connected to the top of the cutting box, the right side wall of the cutting box is fixedly connected with a rotating motor, and the right side wall of the slitting box is fixedly connected with the rotating motor. The output end of the rotating motor penetrates through the cutting box and extends to an inner cavity of the cutting box, the output end of the rotating motor is fixedly connected with a cam shaft, the cam shaft is rotationally connected with the inner cavity of the cutting box, and lifting grooves are formed in the front side wall and the rear side wall of the inner cavity of the cutting box. According to the waste paper smashing device for carton processing, waste paper can be evenly smashed and cut, later packaging and collecting are facilitated, the size of the smashed waste paper after compression can be smaller, the waste paper is not prone to scattering, and later transportation is facilitated.

The utility model relates to the technical field of tenebrio molitor processing, and discloses a tenebrio molitor drying device which comprises a drying bin and a sieve plate and further comprises a supporting frame, a supporting assembly and a drying assembly, the bottom of the sieve plate is slidably connected with a top groove of the supporting frame and used for supporting and fixing the sieve plate, and a vibration assembly is arranged on the side, away from the sieve plate, of the supporting frame. The vibrating assembly comprises a motor, the output shaft end of the motor is fixedly connected with a driving shaft, and the middle of the driving shaft is fixedly connected with a cam shaft in a penetrating mode. Limiting plates are rotationally connected to the two sides of the driving shaft in a penetrating mode, and the problems that when traditional tenebrio molitor drying equipment conducts drying, hot air is mostly directly sprayed to the surfaces of tenebrio molitor bodies for drying, the hot air at the bottoms of the tenebrio molitor bodies is not directly blown, the tenebrio molitor bodies are dried unevenly or insufficiently, and the drying effect is poor are solved.

The application provides a signal disc and gear press-fitting device and press-fitting method, and relates to the technical field of camshafts, and comprises a positioning seat, a first positioning assembly, a second positioning assembly, a coarse positioning device and a fine positioning device.The coarse positioning device is used for coarsely positioning the signal disc on the top surface of the positioning seat, and the fine positioning device is used for angle positioning of a signal groove on the signal disc.The second positioning assembly comprises a positioning shaft and a positioning key.The positioning shaft is fixedly arranged at the center of the top surface of the positioning seat and is used for positioning a gear center hole.The positioning key is fixedly arranged on the positioning shaft and is used for cooperation with the fine positioning device so as to angle position a key groove on the gear center hole and the signal groove on the signal disc.The gear press-fitting mode can avoid press-fitting deformation of the signal disc through signal disc fixation.The first positioning assembly and the second positioning assembly can cooperate with each other to ensure the concentricity of the signal disc and the gear after press fitting, and can also ensure the timing angle precision of the signal disc and the gear after press fitting.

The utility model belongs to the technical field of motorcycle engines, and relates to an air cylinder head structure of a motorcycle engine, which comprises an air cylinder head, a cam shaft is arranged at the top of the air cylinder head, a timing chain wheel is sleeved on the cam shaft, a combustion chamber is arranged below the cam shaft, and a decompression ejector rod for ejecting an exhaust valve open is arranged in the cam shaft in a sliding mode. A centrifugal mechanism for driving the decompression ejector rod to slide is arranged on the timing chain wheel, a first sparking plug and a second sparking plug which are inclined are arranged on the left side and the right side of the combustion chamber respectively, and the included angle between the second sparking plug and the bottom plane of the air cylinder head is smaller than that between the first sparking plug and the bottom plane of the air cylinder head. The air cylinder head is provided with an avoiding groove for avoiding the timing chain wheel and a sleeve base extending in the direction of the avoiding groove, and a sleeve for installing a second spark plug is arranged in the sleeve base. The cylinder head structure of the motorcycle engine is compact in layout, stable in structure and capable of achieving the purpose of further saving energy and reducing consumption.

The hydraulic oil can be reused without providing a check valve in the oil control valve.SOLUTION: The valve timing adjustment device includes a rotor 20 supported rotatably within a predetermined rotation angle range with respect to a housing 10 rotating together with a crankshaft and transmitting torque from the crankshaft to a cam shaft 70 by rotating together with the housing 10, an advance oil passage 41 supplying and discharging hydraulic pressure to and from an advance hydraulic chamber, a retard oil passage 42 supplying and discharging hydraulic pressure to and from a retard hydraulic chamber, an OCV30 supplying hydraulic pressure to the advance oil passage 41 and the retard oil passage 42 via a supply port 31a, a recycle oil passage 43 provided in the rotor 20 and connecting the advance hydraulic chamber and the retard hydraulic chamber to the supply port 31a, and a check valve 60 provided in the recycle oil passage 43 and communicating the hydraulic pressure side of the advance hydraulic chamber and the retard hydraulic chamber with the supply port 31a.SELECTED DRAWING: Figure 1

The utility model discloses an automobile engine camshaft bushing which comprises a bushing body, a transverse groove is formed in the middle of the inner wall of the bushing body, an arc-shaped groove is formed in the inner wall of the bushing body, a base plate is arranged in the arc-shaped groove, a groove is formed in one side of the base plate, the arc-shaped groove penetrates through the transverse groove to form communication, and the transverse groove is communicated with the arc-shaped groove. A cavity is formed between the arc-shaped groove and the base plate; the arc-shaped groove surrounds the inner wall of the bush body and penetrates through the transverse groove, at the moment, lubricating oil is injected into the transverse groove through the feeding mechanism, the lubricating oil in the transverse groove enters the arc-shaped groove, and the arc-shaped groove surrounds the inner wall of the bush body, so that a driving shaft in the bush body can be well lubricated; and meanwhile, a base plate matched with the arc-shaped groove is placed in the arc-shaped groove, the base plate can adsorb lubricating oil to a certain degree, real-time lubrication of the driving shaft can be kept, and then the lubricating effect is improved.

A power tool includes a manifold, a pump housing coupled to the manifold, and a camshaft that is supported by the pump housing. A drive sprocket is positioned in the manifold and has a first end that is coupled to the distal end of the camshaft. The drive sprocket includes a plurality of pawls. A sprocket bearing is coupled between a second end of the drive sprocket and the manifold, and a valve body having a first drive member and a second drive member. The valve body rotates in a first direction when the plurality of pawls engages the first drive member and rotates in a second direction when the plurality of pawls engages the second drive member.

The electric valve timing control apparatus of the present application controls an electric valve timing apparatus which changes valve timing by changing a relative rotation phase of a camshaft with respect to a crankshaft of an internal combustion engine using a motor coupled to the camshaft, and includes a control section which, when changing the relative rotation phase of the camshaft using the electric valve timing apparatus after a stop process of the internal combustion engine, changes a phase changing method for changing the camshaft from a current phase to a target phase based on a relationship between the current phase and the target phase of the camshaft.

The application discloses an engine phase synchronization method, system, device and medium suitable for multiple camshafts, and relates to the technical field of engine control. The method comprises the following steps: acquiring a crankshaft signal transmitted by a crankshaft sensor, a camshaft signal transmitted by a camshaft sensor and a preconfigured synchronization condition corresponding to the camshaft in real time; detecting a crankshaft missing tooth corresponding to the crankshaft signal and a camshaft characteristic direction corresponding to the camshaft signal based on the synchronization condition; determining the sequence of the crankshaft missing tooth and the camshaft characteristic direction, and determining the number of the crankshaft tooth and the camshaft direction based on the sequence, so as to realize engine phase synchronization. The application is used to solve the problem that the prior art can only realize engine phase synchronization for specific camshafts, and realizes engine phase synchronization for multiple camshaft types.

A bearing arrangement for a camshaft of an internal combustion engine, the internal combustion engine including a crankcase and a camshaft including a camshaft gear wheel and a side including a shaft end allocated to the camshaft gear wheel, includes: an axial bearing configured for supporting the camshaft on the side of the shaft end, the axial bearing including a plain bearing body, which includes a mounting surface, is crescent-shaped, and is configured for axially supporting the camshaft and for being attached to the crankcase by way of the mounting interface.

The application relates to the technical field of variable intake timing mechanism processing equipment, and particularly discloses a variable intake timing mechanism and processing equipment thereof, which comprises a main body frame arranged in a square structure and connected with the ground at the bottom end; a fixing assembly is arranged at the top end of the main body frame and used for fixing a processing component; a grinding assembly is arranged at the top end of the main body frame and used for grinding the side edge of the processing component to reach the use standard of the processing component; and a detection assembly is arranged at the top end of the main body frame and in contact with one end of the processing component. The detection assembly can quickly detect the shaft center of the camshaft, and the detection process can be realized in the use process, so that the accuracy of the equipment in the use process can be monitored, personnel can be timely reminded to adjust the position of the camshaft, the grinding wheel wear is avoided to reduce the processing effect of the camshaft, and the grinding process is more stable.

The utility model discloses a self-positioning switcher which is provided with a monitoring mechanism capable of monitoring whether a cam shaft rotates in place or not, the monitoring mechanism comprises a coding wheel and a microswitch, the coding wheel and the cam shaft rotate in a linkage mode, a plurality of protruding parts are arranged on the periphery of the coding wheel, and the protruding parts can extrude the microswitch respectively along with autorotation of the coding wheel. The switching accuracy can be considered while the structure is simplified and the cost is reduced.

The utility model discloses a camshaft lathe punching clamp which comprises a bottom plate, a plurality of first supporting blocks, a plurality of second supporting blocks and a plurality of air cylinder pressing blocks, the first supporting blocks, the second supporting blocks and the air cylinder pressing blocks are all arranged on the bottom plate, V-shaped grooves are formed in the first supporting blocks, and the first supporting blocks and the second supporting blocks are arranged in a straight line. The cylinder pressing block is located on one side of the first supporting block. Man-machine separation can be achieved, and the machining safety is improved.

The invention relates to the technical field of casting equipment, and particularly discloses a camshaft casting continuous production device and method.The device comprises an electric induction furnace and a slag salvaging mechanism, and the electric induction furnace comprises a furnace body and a support arranged on the furnace body and close to a furnace opening; the slag salvaging mechanism comprises an outer sleeve rotationally connected with the support, a spiral conveyor coaxially arranged in the outer sleeve, and at least one intermittent slag collecting assembly, wherein one end of the outer sleeve extends into the furnace body from the furnace opening. A slag inlet and a slag outlet are formed in the outer sleeve in the axial direction at intervals, the intermittent slag collecting assembly is constructed to continuously collect dross in molten iron in the furnace body and extrude the dross into the outer sleeve from the slag inlet, and the spiral material conveying machine is constructed to continuously convey the dross from the slag inlet to the slag outlet and discharge the dross, so that the time difference between manual slag salvaging and connection of previous and later procedures is effectively solved; the continuity of casting production is guaranteed, and the production efficiency is improved to adapt to the large-scale production requirement; and meanwhile, the consistency of the deslagging degree is ensured through automatic deslagging operation, and the stability of the quality of the camshaft blank is improved.

The invention relates to a method for processing an electrical signal (S) that is generated continuously over time based on measured values ​​from a sensor (23, 24, 25) and transmitted via a line (20, 22) exposed to disturbances, comprising the following features: setting a sampling rate interval (T), setting quantization levels (Q1, Q2), assigning the electrical signal to a quantization level (Q1, Q2), determining the number of changes of the quantization level (Q1, Q2) within the sampling rate interval (T), and discarding all even-numbered changes of the quantization level (Q1, Q2) within the sampling rate interval (T). It also relates to a control unit (17, 21) for a camshaft adjuster (7, 8) or for an internal combustion engine (1) that performs such a method.

The present invention relates to a camshaft (12, 14) for an internal combustion engine having a recess (20) formed in the circumferential surface (18) on the outer periphery of the camshaft (12, 14) and which is itself open to the outside in the radial direction of the camshaft (12, 14). A tool can be inserted into the recess and thereby placed in a form-locking interaction with the camshaft (12, 14), thereby the camshaft (12, 14) can be fixed in a rotation-resistant manner by means of the tool. The recess (20) is arranged radially offset from the center (M) of the camshaft (12, 14).

The utility model provides a cam shaft convenient to assemble, which comprises a side edge transmission gear structure, the side edge transmission gear structure comprises a gear disc, an attaching ring is arranged on the outer wall of the gear disc, an outer attaching strip is arranged between the attaching ring and the outer side of the gear disc, and an inner attaching strip is arranged on the inner side of the attaching ring and the inner side of the gear disc. Threads are arranged on the outer wall of the outer attaching strip, a fixing nut is arranged on the outer wall of the outer attaching strip, and the outer attaching strip is in threaded connection with the fixing nut. The gear disc fixing device is reasonable in design, the first positioning groove, the second positioning groove, the outer attaching strip and the inner attaching strip are aligned with one another, and a gear disc pre-installed on the outer wall of a cam shaft structure can be fixed; and meanwhile, threads on the outer wall of the outer attaching strip are aligned with threads at one end of the camshaft body, and then fixing nuts are installed on the outer attaching strip and the outer wall of the camshaft body, so that the gear disc on the outer wall of the camshaft structure is rapidly installed.

The utility model discloses a visual detection device for a camshaft. The visual detection device comprises a movable bracket, a blanking step feeding channel, a feeding step feeding channel, a detection cylinder group and a camera group, the movable support is erected on the left side and the right side of the discharging step feeding channel and the left side and the right side of the feeding step feeding channel. The movable camera is arranged on the movable support and can move freely in three directions. The two ends, corresponding to the camshaft, of the rear end face camera and the front end face camera are arranged on the left side and the right side of the junction detection position of the discharging step feeding channel and the feeding step feeding channel, a rear tip and a front tip are correspondingly arranged at the front end and the rear end of the camshaft at the detection position, and the camshaft at the detection position can rotate under the action of a rotating motor in cooperation with a detection air cylinder set. Through the arrangement of the movable support, the detection air cylinder set and the camera set, the whole camshaft is automatically photographed and recorded to complete visual detection, automatic stepping is conducted through the stepping feed channel, manual single measurement and movement are not needed, manpower consumption is reduced, and the detection efficiency and accuracy are improved.

The application discloses a V-type diesel engine body structure, which comprises a body, at least two camshaft holes, a main oil passage for providing lubricating oil for the camshaft in the camshaft hole, two water distribution passages and two water collecting passages, the two water collecting passages are connected with water outlets at the front end of the body respectively, camshaft chambers are arranged on both sides of the camshaft hole on the body, the camshaft chambers are connected with lower cooling cavities of cylinder sleeves through splash oil and oil gas inlets, the lower cooling cavities of the cylinder sleeves are connected with crankcase cavities through splash oil return gaps, and the camshaft chambers are connected with the crankcase cavities. The structure of the application is divided into upper and lower parts for cooling, and the upper part is cooled by cooling liquid; since the lower part of the cylinder sleeve has small thermal load, the structure of the application uses non-forced cooling, splash oil and oil gas splashed by rotation of camshaft bearings are used to cool the lower part of the cylinder sleeve in a small amount, so that appropriate benefits are achieved, and excessive cooling to cause engine heat loss is avoided.

The invention discloses a camshaft tube radial extrusion strengthening manufacturing device, and relates to the technical field of camshaft tube manufacturing, the camshaft tube radial extrusion strengthening manufacturing device comprises a rack and at least two extrusion parts which are distributed at intervals in the circumferential direction of a tube workpiece, a force wheel set of each extrusion part is provided with a fixed shaft and a spinning wheel which are in clearance fit, and a floating variable-axis plate is arranged on the circumferential surface of each fixed shaft. A movable space is provided for the spinning wheel through clearance fit of the fixed shaft and the spinning wheel, after the spinning wheel is abraded, the floating variable-axis plate changes the space position of the spinning wheel through physical thrust, the central axis of the spinning wheel deviates from the original axis, and therefore size reduction caused by abrasion is counteracted, it is guaranteed that the spinning wheel is always in effective contact with a workpiece, and the spinning effect is improved. The radial extrusion force is uniform and stable, so that the workpiece material is fully plastically deformed, and the uniformity of the overall mechanical property of the camshaft tube is improved.

This utility model belongs to the field of engine camshafts and relates to a tooling for replacing engine camshaft bearings. It includes: a pull rod with multiple limiting members spaced apart on it, the limiting members being detachably connected to the pull rod; and a pressure head movably mounted on the pull rod and cooperating with the limiting members, which limit the pressure head. The advantages of this structure are: simple structure; convenient operation due to the pull rod and pressure head design; smoother disassembly and replacement; and more even bearing stress during disassembly and replacement. Adjusting the positions of the limiting members on the pull rod allows for the replacement of bearings for different engine camshaft models.

An internal combustion engine system includes an engine with a plurality of pistons housed in respective ones of a plurality of cylinders. A valve train is provided for opening and closing intake and exhaust valves of the cylinders during nominal engine operations. The valve train is also configured to provide for asynchronous switching between selected cam lobe lift profiles for opening and closing of the intake and / or exhaust valves.

The present disclosure relates to a self-propelled transmission comprising: an axle; at least one sun gear rotatably mounted around the axle; at least one clutch mechanism configured to selectively prevent rotation of the at least one sun gear about the axle in a first rotational direction in a first mode and to selectively prevent rotation of the at least one sun gear about the axle in an opposite second rotational direction in a second mode; a camshaft mounted inside the axle for actuating the at least one clutch mechanism; wherein each clutch mechanism includes a first pawl and a second pawl configured to be actuated by the camshaft such that the first pawl is selectively engaged with the respective sun gear in a first mode and the second pawl is selectively engaged with the respective sun gear in a second mode.