205 results about "Dog clutch" patented technology

The invention discloses a dog clutch control method, device and equipment, a medium and a product, and belongs to the field of vehicle clutches. The method comprises the steps that under the condition that engagement of the dog clutch is started, the engagement state of the dog clutch is monitored; under the condition that the joint state is the top tooth state, the rotating speed of the driven part is obtained; superposing the target waveform on the rotating speed of the driven part to obtain a target rotating speed; and the driving part is controlled to operate according to the target rotating speed, so that the driving part rotates relative to the driven part, and the rotating angle amplitude is larger than the tooth interval angle of the dog tooth clutch. The problem that gear engaging is difficult due to tooth abutting of the dog-tooth clutch can be solved.

A linear jack includes a coarse nut threadedly coupled to a first rotating screw and a first sleeve movable with respect to the coarse nut (the first rotating screw, the first sleeve, and the coarse nut collectively a high-speed assembly), and a second sleeve threadedly coupled to a second rotating screw (the second sleeve and the second rotating screw collectively a low-speed assembly). The coarse nut is movable to a first position where the coarse nut is held from rotating with the first rotating screw—e.g., via a dog clutch—to convert rotational motion of the first rotating screw into translating motion of the coarse nut and the first sleeve. The coarse nut is movable to a second position where the coarse nut is free to rotate together with the second rotating screw and the first rotating screw with respect to the first sleeve.

The invention discloses a dog clutch control method, device and equipment, a medium and a product, and belongs to the field of vehicle clutches. The method comprises the steps that under the condition that separation of the dog clutch is started, a first motor is controlled to enter a torque mode, and separation force is applied to a driven part, so that a driving part and the driven part start to be separated; the separation state of the dog clutch is monitored; when the separation state is that separation is not completed, the separation force is kept unchanged, the target torque is superposed on the average torque of the driving part, and the target output torque of the first motor is obtained; and controlling the first motor to move according to the target output torque so as to separate the driving part from the driven part. Under the condition that separation of the dog tooth clutch is not completed, the target torque is applied to the average torque of the driving part, so that a gap can be generated between the driving part and the driven part, separation resistance between the driving part and the driven part is reduced, and separation of the driving part and the driven part of the dog tooth clutch is facilitated.

A system and method for a hybrid electric axle. The hybrid electric axle system, in one example, includes an engine interface assembly with a one-way clutch that is rotationally coupled to an input shaft and a gear shaft in a gear set that is rotationally coupled to a differential and a dog clutch configured to selectively rotationally couple the input shaft and the gear shaft in the gear set. The hybrid electric axle system further includes an electric drive assembly including a traction motor that is rotationally coupled to a gear train. In the electric axle system, the gear train is rotationally coupled to the differential and the engine interface assembly and the electric drive assembly are packaged in an axle housing.

The invention relates to a hybrid power gearbox and a hybrid power system, and relates to the field of vehicles, the gearbox comprises a driving motor, a first gear mechanism, a first claw clutch and a second claw clutch; when at least one of the first claw-shaped clutch and the second claw-shaped clutch is connected with a gear group in the first gear mechanism, the transmission mechanism is used for transmitting power of the engine and / or the driving motor to the wheels so as to drive the vehicle; and when the first claw clutch and the second claw clutch are disconnected from the gear set in the first gear mechanism, the transmission of power to the engine and the driving motor is stopped so as to stop driving the vehicle. According to the gearbox, the two claw-shaped clutches are connected or disconnected with the different gear sets in the first gear mechanism, the engine can work under the three-speed gear, the driving motor can work under the two-speed gear, and due to the deep integration design of all parts of the gearbox, the size of the gearbox can be reduced, and the manufacturing cost can be reduced.

The invention relates to a gear shifting overlap control method and device, electronic equipment, a readable medium and a vehicle, the method is applied to an AMT of a commercial electric vehicle, and the method comprises at least one of the following overlap control steps: overlap control based on gear shifting motor response time; overlapping control based on idle stroke of the dog clutch; overlapping control based on the dog-tooth clutch in-gear position; overlay control based on dog clutch engagement depth. Through cooperation of the overlapping control modes, the gear shifting time can be remarkably shortened, the gear shifting efficiency can be improved, meanwhile, the smoothness of the gear shifting process is guaranteed, and the driving comfort is improved.

An electromagnetic switchable clutch includes a dog clutch, a one-way clutch and a coil assembly. The dog clutch includes a dog clutch hub with a first outer spline and first pockets, a dog clutch disc with a second outer spline and a dog clutch sleeve with an inner spline, complementary to the first outer spline and the second outer spline. The inner spline is drivingly engaged with the first outer spline and axially displaceable to engage the second outer spline. The one-way clutch includes a cam ring and pawls. The cam ring includes second pockets. The pawls are disposed the first pockets or the second pockets and arranged to engage the other of the first pockets or the second pockets to rotationally lock the cam ring to the dog clutch hub in a single rotational direction. The coil assembly is arranged to axially displace the dog clutch sleeve.

Systems and methods for an electric drive unit are provided. In one example, an electric drive unit comprises a transmission system comprising a plurality of motor-transmission subassemblies each comprising an electric motor coupled to an input shaft comprising a first and second gear, and a intermediate shaft comprising a dog clutch selector, a first and second clutch gear, wherein the first clutch gear meshes with the first gear of the input shaft and the second clutch gear meshes with the second gear of the input shaft and wherein the dog clutch selector is configured to selectively couple the first or second clutch gear to the intermediate shaft; and an output shaft rotationally coupled to the plurality of motor-transmission subassemblies; and a controller configured to, in response to a powershift request, increase torque of at least one electric motor while at least one other motor-transmission subassembly is shifting.

An outboard motor includes a drive shaft, a coupling to connect a first shaft and a second shaft of the drive shaft together, and a transmission including a dog clutch to transmit a rotation of the drive shaft to a propeller shaft. The coupling includes a first portion attached to the first shaft, a second portion attached to the second shaft, and a damper. The first portion includes first claws arranged along a rotation direction of the drive shaft. The second portion includes second claws between adjacent ones of the first claws in the rotation direction. The damper includes an elastic portion interposed between adjacent ones of the first claws and the second claws in the rotation direction.

In the present invention, a clutch actuator (5) causes a first clutch member (11) and a second clutch member (12) of a dog clutch (10) to move in a relative fashion in the axial direction. A phase difference sensor (6) detects the phase difference between the first clutch member (11) and the second clutch member (12). When a predetermined prediction execution condition is satisfied during an ongoing execution of a synchronization operation in which the rotational speed of an input shaft (3) is boosted toward the rotational speed of an output shaft (4) so as to synchronize the rotation of the input shaft (3) and the output shaft (4) due to an engagement instruction for causing the dog clutch (10) in a disengaged state to become engaged, a control device (7) performs the following processing. The control device (7): detects an engagement time when the dog clutch (10) can be engaged on the basis of the output of the phase difference sensor (6); predicts a future engagement time in the light of one past engagement time and an estimated rotational speed of the input shaft; and drives the clutch actuator (5) in accordance with the predicted future engagement time.

A safety brake device for braking a machining tool includes at least one brake device configured as an at least two-part claw clutch. The claw clutch includes a first claw-clutch part, and a second claw-clutch part. The first claw-clutch part is arranged on the output shaft so as to allow no relative rotation, the second claw-clutch part is configured to allow no relative rotation with respect to the power tool, each claw-clutch part has a respective plurality of toothing elements, the respective plurality of toothing elements are configured to engage with one another during a braking operation to stop rotation of the output shaft, and a maximum angular spacing Δmax of mutually adjacent toothing elements of at least one of the first plurality of toothing elements an the second plurality of toothing elements is determined depending on a maximum rotational speed of the output shaft.

The invention relates to a planetary gear device (10), comprising: a housing (12); a planet carrier (18) forming a first axis of the planetary gear device (10) and rotatably supported about a main axis of rotation (20), the planet carrier having a pin carrier (30) and planet gear pins (34) on which planet gears (38) are rotatably supported; a dog clutch (42), which has a first dog toothing (44) connected to the planet carrier (18) in a permanently rotationally fixed manner and is designed to connect the planet carrier (18) to another shaft of the planetary gear (10) or to the housing (12) in a rotationally fixed manner; and an oil collecting ring (46) which is designed in one piece together with the first claw toothing (44), the planetary gear arrangement comprising a flat retaining disc (54) which is designed in one piece together with the first claw toothing (44) and which is designed to axially fix the planet gear pins (34).

Control method for managing dog clutch engagement in a vehicle powertrain (1) comprising an internal combustion engine (2), primary (3) and secondary (4) electrical machines, and a dog clutch gearbox having a first primary shaft (5) connected to the engine, a second primary shaft (6) connected to the primary electrical machine, the method comprising: when the target ratio to be engaged is intended to lock the first primary shaft, respectively the second primary shaft, with the secondary shaft in rotation, then a convergence torque is applied by means of the secondary electrical machine, respectively by means of the primary electrical machine, the convergence torque to be applied being determined in subordination to an acceptance of charging and discharging of the battery calculated according to the characteristic(s) of the battery and the power taken or delivered by the electrical machines.Figure from the summary: Fig. 2.

A system (34) for controlling the pitch of a propeller blade (10) of an aircraft turbine engine is disclosed, characterized in that the system comprises: - a cup-shaped portion (58) having an annular wall (58a) extending about an axis (A) intended to set the pitch of the blade, the annular wall (58a) having a lower axial end enclosed by a bottom wall (58b) and an open upper axial end configured such that the root (14) of the blade (10) can be mounted within the cup-shaped portion (58); and - a retaining ring (152) extending about the axis (A) and configured to be mounted around the root (14), the retaining ring (152) being a double-claw clutch ring comprising two annular rows of external claw teeth (154, 156), the two annular rows of external claw teeth constituting an active claw tooth and a safety claw tooth, respectively.

The invention relates to a method for managing the operation of a heat engine (2) of a motor vehicle (1) equipped with a dog-clutch gearbox (4) driven by the heat engine (2) and at least one electric motor (3), said method being implemented by a computer device (100) on board the vehicle. The invention also relates to a device (100) implementing such a method, as well as a motor vehicle (1) comprising such a device. Figure for the abstract: 1

The invention relates to a resilient claw clutch for transmitting a torque M acting about a rotational axis from a drive device to a driven device, having a first engagement element with first claw teeth and a first gap formed by the first claw teeth, and a second engagement element with second claw teeth and a second gap formed by the second claw teeth, the first claw teeth and the second claw teeth together being in a state of mutual engagement and delimiting an accommodation space, into which an elastic pressure body can be inserted such that the elastic pressure body elastically, torque-transmittingly force-couples the first engagement element with the second engagement element, several first claw teeth and several second claw teeth being designed such that several accommodation spaces are arranged in a circumferential direction R X successively in a radial direction R U and in a radial direction R R .

Title of the invention: Transmission shaft coupling system The present invention relates to a transmission shaft coupling system comprising: - a driving shaft (2) including a first drive spline; - a driven shaft (3) coaxial with the driving shaft including a second drive spline; - a dog clutch sleeve (30) including at least a first connecting spline adapted to drive the driving shaft in rotation about a first axis of rotation (X) and a second connecting spline adapted to drive the driven shaft in rotation;- an actuation device (10) comprising an electric motor kinematically linked to a speed reduction device, an output shaft (40) of the speed reduction device rotating about a second axis of rotation (Y), an interface component (20) disposed at the end of the output shaft and arranged to pivot within the dog clutch sleeve, and an elastic damping means (50) acting in torsion about the second axis of rotation (Y) is disposed between the output shaft (40) and the interface component (20) of the actuation device. Abstract figure: Figure 1;

The utility model relates to the technical field of electromagnetic clutches, and discloses a canine tooth type electromagnetic clutch jaw disc integrated with a torsion damper, the canine tooth type electromagnetic clutch jaw disc comprises a damper disc, one side of the damper disc is sequentially provided with a driving disc hub, a wave-shaped spring steel sheet and a canine tooth type jaw disc, the wave-shaped spring steel sheet is arranged at an opening of the driving disc hub, and the canine tooth type jaw disc is arranged on the other side of the damper disc. Fastening mechanisms are arranged in the inner walls of the shock absorber disc, the driving disc hub, the wave-shaped spring steel sheets and the canine tooth type tooth embedding disc, and after the shock absorber disc, the driving disc hub, the shock absorber springs, the wave-shaped spring steel sheets and the canine tooth type tooth embedding disc assembly is assembled, the shock absorber disc, the driving disc hub, the wave-shaped spring steel sheets and the canine tooth type tooth embedding disc are connected in a fastened mode through the fastening mechanisms. Wherein the wave-shaped spring steel sheet can enable the canine tooth type jaw disc to obtain axial elasticity, the clutch joint softness can be improved, the shock absorber spring is assembled in the shock absorber disc, the driving disc hub and the canine tooth type jaw disc, and torsional vibration and impact borne by a transmission system can be reduced.

A dog clutch includes a first clutch member and a second clutch member. The first clutch member is rotatable about an axis and has first teeth spaced apart in a circumferential direction. Each tooth has a first face and a second face with different axial lengths. The second clutch member is rotatable about the axis relative to the first clutch member and has second teeth each having first and second faces with different axial lengths. When the first and second clutch members are in an engaged state in which the first teeth are received in the second pockets and the second teeth are received in the first pockets, the axially longer faces of the first teeth are adjacent to the axially longer faces of the second teeth. The dog clutch can be provided in a differential of a vehicle.

The invention discloses a gear control method based on a dog clutch and a related device, if the difference value between the actual rotating speed of a turbine and the target rotating speed of the turbine is smaller than the preset rotating speed difference value, the estimated synchronization time is obtained, and the estimated synchronization time can identify the time required for the dog clutch to decrease to zero at the current speed difference change rate. And if the estimated synchronization time is smaller than or equal to the torque response delay time of the engine, a torque reduction request for the engine is sent, so that when the speed difference of the dog clutch is close to zero, the actual torque of the engine reaches the requested target torque. And if the estimated synchronization time is smaller than or equal to the hydraulic control delay time of the dog clutch, a control electromagnetic valve of the dog clutch is opened, namely the control electromagnetic valve of the dog clutch is opened in advance, so that the dog clutch starts to be combined only when the speed difference of the dog clutch is close to zero. Therefore, the short service life of the dog clutch due to the fact that the dog clutch is not provided with the synchronous friction element is avoided.

A parking brake device is suitable for being installed in a casing of an electric machine that houses a rotary shaft and at least one rolling bearing for guiding the rotary shaft. The parking brake device includes an annular support suitable for being inserted between the rolling bearing and the casing, an annular sliding gear which is mounted so as to slide on the support between two end positions, which is locked against rotation on the support, and which has dog clutches suitable for engaging a notched wheel coupled to the rotary shaft, and an actuator suitable for moving the sliding gear between its two end positions.

To provide an engagement device which can keep time required for bringing the device into an engaged state from being long while suppressing reduction in durability.SOLUTION: A dog clutch 10 includes a dog ring 20 and a pair of driven gears 30 which can rotate relative to each other about the same axial line CL. A motive force is transferred by bringing a dog tooth 22 provided on the dog ring 20 and a dog tooth 32 provided on the driven gear 30 into an engaged state. In a radial view about the axial line CL, for at least one of the dog tooth 22 and the dog tooth 32, for example the dog tooth 22, a top face 22t and a connection face 22s connecting an engagement face 22k are in an arc shape, and a connection part P1a of the connection face 22s and the engagement face 22k is cornered.SELECTED DRAWING: Figure 2

The invention relates to a control mechanism for electric control gear shifting of a hybrid tractor. The control mechanism comprises a control module, a gear shifting mechanism, an executing mechanism and a control panel. The control module comprises a gear shifting control program, the gear shifting mechanism comprises a meshing sleeve, a gear shifting gear and a transmission shaft, the gear shifting gear is rotationally connected to the transmission shaft, the meshing sleeve is slidably connected to the transmission shaft, and meshing structures are arranged between the meshing sleeve and the transmission shaft and between the meshing sleeve and the gear shifting gear and used for achieving synchronous transmission of the transmission shaft and the gear shifting gear. The executing mechanism is used for controlling the meshing sleeve to axially move on the transmission shaft; the control program is used for selecting a gear shifting gear according to a signal of the control panel, controlling the meshing sleeve to move through the executing mechanism to achieve gear shifting, if meshing is not successful, meshing is executed again after resetting, and if meshing is not completed within preset time, a gear engaging failure signal is sent, and the rotating speed of the speed change mechanism is adjusted till meshing is completed.

A jaw clutch having a freewheeling function includes an inner element, the end face of which is provided with pull claws, and an outer element, which radially encloses the inner element at least in part and is provided with push claws on its end face. The pull claws and push claws have oppositely inclined wedge structures, and the inner element and the outer element are axially movable, via a shift claw or a shift pin, with their respective claws, towards a counter element having a sprocket or toothed rim.

The present invention relates to a power train of a plug-in hybrid vehicle using a multi-functional starter generator, and a control method using same, the power train of a plug-in hybrid vehicle comprising: an internal combustion engine unit (1); a motor-generator unit (2); a clutch unit (3); a transmission unit (4); a differential unit (5); a starter-generator unit (6); and a battery unit (8) connected to each of the motor-generator unit (2) and the starter-generator unit (6) through an inverter unit (7), wherein a first gear (12) is provided on an output shaft (11) of the internal combustion engine unit (1), a second gear (14) is provided on an input shaft (13) of the motor-generator unit (2), first and second dog clutches (21, 23) and third and fourth gears (22, 24) individually engaged with the first and second gears (12, 14) are provided on a driving shaft (25) of the starter-generator unit (6), the first dog clutch (21) connects or disconnects the driving shaft (25) of the starter-generator unit (6) to or from the output shaft (11) of the internal combustion engine unit (1) when the driving shaft (25) of the starter-generator unit (6) is synchronized with the output shaft (11) of the internal combustion engine unit (1), and the second dog clutch (23) connects or disconnects the driving shaft (25) of the starter-generator unit (6) to or from the input shaft (13) of the motor-generator unit (2) when the driving shaft (25) of the starter-generator unit (6) is synchronized with the input shaft (13) of the motor-generator unit (2).

The invention relates to a secondary transmission (3) for a utility vehicle (1) that has a planetary gear set (19), wherein the planetary gear set (19) has a first element (21), a second element (25), and a third element (29), wherein the first element (21) is in the form of an input element and is designed to be operatively connected to a driven shaft of the utility vehicle (1), wherein the second element (25) is in the form of an output element and is designed to be operatively connected to a driven wheel (5) of the utility vehicle (1), and wherein the third element (29) can, by means of a shifting device (35), be selectively braked in a first shifting position, and be locked in a second shifting position with an element (21, 25, 29) selected from the first element (21) and the second element (25), characterised in that the shifting device (35) has at least one shifting element (37) in the form of a dog clutch.

A dog clutch control system includes a dog clutch including a first engagement member and a second engagement member, an actuator, a rotational speed detecting unit, an arrival timing predicting unit, and a phase correcting unit. The arrival timing predicting unit predicts an arrival timing at which a rotational speed difference between the first engagement member and the second engagement member is adjusted to a value equal to or less than a predetermined threshold, based on the rotational speeds of the first and second engagement member and a time variation characteristic of the rotational speed difference during a rotational speed adjustment. The phase correcting unit performs a phase correction to bring an engageable timing, which is a timing at which the first engagement member is engageable with the second engagement member after the arrival timing, closer to the arrival timing compared to a case without the phase correction.

The invention discloses a gear position self-learning method, system and equipment of a gear shifting mechanism and a medium, and relates to the technical field of computers.The gear shifting mechanism comprises a reduction gear, a threaded lead screw, a gear shifting fork and a dog-tooth clutch, the reduction gear drives the gear shifting fork through the threaded lead screw to achieve combination and separation of the dog-tooth clutch so as to conduct gear shifting, the method comprises the steps that under the condition that gear position information of a gear shifting mechanism is abnormal, whether the driving state of a target vehicle meets a preset self-learning condition or not is determined; if the self-learning condition is met, the current position of the threaded lead screw is obtained; locked-rotor detection is carried out on the gear shifting mechanism from the current position of the threaded screw rod, and the actual total stroke of the threaded screw rod in the locked-rotor detection process is obtained; if the stroke deviation between the actual total stroke and the preset theoretical total stroke is smaller than or equal to the preset error threshold value, the position information of the actual top dead center and the actual bottom dead center serves as the updated gear position to be stored.

A shift fork for a dog clutch, the shift fork configured to be rotatable about a rotation center axis, the shift fork comprising: a shift fork base including: a shift fork head configured to rotate about the rotation center axis with rotation of the shift fork; the shifting fork control part is opposite to the shifting fork head relative to the rotating central axis, and is used for receiving external force enabling the shifting fork to rotate so as to generate torque around the rotating central axis on the shifting fork; the shifting fork roller support is used for installing at least two rollers which are distributed and installed in a plane perpendicular to the rotating central axis so as to be capable of rotating around a roller axis parallel to the rotating central axis, and the shifting fork roller support and the shifting fork base part are independent parts and are mutually fixed. According to the shifting fork, expected shapes of corresponding different parts in the shifting fork can be easily obtained through two different deformation machining modes of forging and stamping, and therefore the overall manufacturing cost of the shifting fork is reduced.

A differential drive system for a vehicle includes a differential drive device, a dog clutch device, and an electromagnetic actuator. The axis of rotation of the differential drive device is situated outside of the annular electromagnet of the electromagnetic actuator.