Double-flow friction clutch

FIELD: machine building.

SUBSTANCE: invention is related to the field of machine building, in particular to double-flow friction clutches of disc type. Double-flow friction clutch comprises body, pressure plate and two slave discs, and also mechanism for connection of clutch, which is functionally combined by pressure mechanism with two disc springs and carriers that are rigidly connected to pressure plate. Clutch body is arranged in the form of shell, inside of which there are three lugs installed at the angle of 120° relative to each other. There are two cylinders with pistons arranged in every lug. In every cylinder there is trapezoidal groove for sealing ring, which also performs function of piston return. On external surface of body there is crown that is engaged with according internal crown arranged on flywheel body. Outside, on body of friction clutch there is sealing device arranged in the form of shell, on internal side of which there are four collars with three stop rings that form together with clutch body two cavities, to which working fluid is supplied through hoses. Inside body, opposite to pistons, there are master blocks installed, a pair for every piston. There are slave discs installed between master blocks.

EFFECT: increased efficiency of power plant due to reduction of losses in process of switching without interruption of power flow.

2 cl, 1 dwg

 

The invention relates to mechanical engineering and can be used in automotive power units General and special purpose.

Known two clutch (LCA) disk type, designed for transmission of torque from the internal combustion engine (ice) on an automated twin-shaft manual gearbox, primary shafts which are made in the form of a hollow outer and metal inner shaft located coaxially. In the composition of the LCA it is possible to allocate housing within which the bearings are the primary shaft, sets of leading and trailing drives the inner and outer shafts, hydraulic cylinders drive mechanism to enable the clutch springs to reduce the effects of sticky medium drives, internal drums. While leading the clutch plates connected by grooves with the case, and slave - similarly with the respective hubs of the slave drives the primary shaft. Building LCA, through the torsional vibration damper, is connected with a crankshaft of the engine, and through the driving and the driven disks with respective primary shaft. Control coupling is provided with hydraulic actuating cylinders and switchgear (see the Description of the car "Audi TT").

The specified VMI is mogodi what Cova, therefore it is not devoid of such drawbacks, such as complexity of construction, large in comparison with dual-mass, complexity, ensure full clutch, as well as the complexity of the automation on and off the clutch.

Also known twin clutch (LCA) of the disc type in the master and two slave elements located between the pressure disk and the switching mechanism with two disk springs (see patent 2292495 C1, RU IPC F16D 13/44 "clutch". Bazhenov, S. p., and others, LGTU. No. 20051244/11 FROM 01.08.2005. Bull. No. 3 dated 27.01.2007.). The main disadvantages of this solution are: the decrease of the magnitude of the transmitted torque as the friction linings wear; the lack of a mechanism to compensate for wear of the friction linings of the slave disk; the complexity of the design of the switching mechanism.

The technical result of the invention is to simplify the design and increase the performance of the power plant by reducing losses in the process of shifting without breaking power flow, and also due to a significant reduction in the switching time, which in turn leads to an increase in economic and environmental performance, but also automate the process of shifting a manual transmission with the aim polisinapticalkie quality vehicles.

This is achieved by the fact that the clutch housing has a cylindrical shape by, for example, of the ring gear or spline loosely associated with the inner toothed wheel or slots made on the flywheel housing or the torsional vibration of the engine, or this connection is provided via damping elements, and the tides, made from the inner side and spaced relative to each other at an angle, for example, 120° performed on two cylinders, the axes of which are at the distance corresponding to the distance from the axis of the housing until the middle of the tides, and the cylinders in pairs in each tide, aimed at diametrically opposite sides, offset relative to each other on the cylinder diameter, and each of them is a piston with two o-rings mounted in grooves machined in the cylinder body, closer to its output side and on the body of the piston closer to its bottom, so that zapolnenie the same cavity of the cylinder, through channels in the form of perforations, is connected with the outer cylindrical portion of the shell, each in their own area, at which mounted and stationary sealing device made in the form of shells, with the inner side of which are mounted four cuffs with three retaining rings, forming together housing linked the two I cavity, to feed them from the water pump, through the distribution unit and hoses fluid flowing depending on the control signal channels in the casing zapolnenie the same cavity of the cylinder opposite the piston which, on two spring rails with clamps, mounted on two leading pads in the form of metal plates with attached friction layer, oriented towards each other so that one of the pair of brake pad abuts against the outer output plane of the piston, and the second at point blank range, made in the form of tide on the inner side of the thrust ring, which by their surfaces, by means of bolt connection, attached with two sides to the planes of the housing of the clutch so that the tides of the rings are located opposite the tides of the body, forming two working zones, in which, between the leading pads are driven disks, each of which consists of two steel rings, each of which rivets attached to the blade spring drive, providing axial damping, which is freely located between the two guide disks with a smaller external diameter, which is attached to the spline hub is mounted on a splined portion of the primary shaft gear box changes gear at LEP is stavam spring and guide disks made window, combined with each other and which are damping elements, which can be steel cylindrical springs or rubber cushions, while the internal primary shaft of the gearbox to its output end rests on a ball bearing mounted in a recess of the crankshaft, and the output end of the outer shaft, the inner input shaft, through the clip with ball bearing mounted between work areas clutch.

At the same time as the working fluid of the hydraulic cylinders used oil lubrication system of the engine or gear box changes gear.

The drawing shows a General view of a twin clutch in the section.

The claimed technical solution is a clutch housing 1, by means of, for example, of the ring gear or spline loosely associated with the inner toothed wheel or slots made on the flywheel housing or the torsional vibration damper 2 engine, which is mounted on the crankshaft 3 or this link is provided via the damping elements. In the tides of the housing 1 located at an angle of 120° relative to each other, with equal intervals between them are made by two cylinders, aimed at diametrically opposite directions and are offset from each other by the value of the diameter, which is installed on the šnē 4. On the surface of the piston 4, a glass bottom part facing into the internal cavity of the cylinder closer to the bottom part made the groove sealing ring 5. In each of the cylinders closer to the output side is made trapezoidal groove sealing ring 6, which has the function of the dealer managers in the process of return of the piston due to its own elastic deformation.

Inside the housing 1, between the tides of the casing and the rings 7 and 8, opposite the pistons 4 are three pair of leading pads 9 facing surface to each other, which is the element of the transmit torque to the driven discs 10 and 11, which in turn placed between respective pairs of pads 9. The slave disk 10 through the slots connected to the internal primary shaft 12 and the driven disk 11 - similarly with the outer primary shaft 13.

Outside, the body 1 is installed sealing device 14 made in the form of a shell, inside of which are mounted four cuffs 15, pairwise their working edges directed towards each other with a certain distance between them, with three mounted in corresponding grooves retaining rings 16. The sealing device 14 is installed at the outside of the clutch housing 1 so that the sealing lips f is rerout together with the clutch housing 1 two cavities, in which two screw holes in the body of the sealing device 14 and the hose is supplied working fluid, which through the channels made in the body 1, is fed to the cylinders. The sealing device 14 by using a shoulder made on the outer surface of the housing 1 and the ring 8 is held against axial movement, as by a bracket attached to the transmission case.

Rings 7 and 8 with the tides, arranged similarly to the tides of the housing 1 and serving as a stop for the leading pads 9, attached to the clutch housing 1 using a bolted connection.

Leading pads 9 are held in the housing 1 between the tides of the casing and the rings 7, 8 through the spring rails 17, which are located in holes formed in the housing 1 and the rings 7 and 8, and fixed pins.

For the perception of stress internal primary shaft 12 to its output end rests on the ball bearing 18, which is located in a recess of the crankshaft 3 and is retained by a cover plate 19. The inner 12 and outer 13 primary shafts are connected through a ball bearing 20, which is installed in the holder 21. When the holder 21 by means of the spline connection is connected with the outer primary shaft 13 and held retaining rings 22 and 23.

We offer clutch operates as follows. In the initial state, the clutch you Lucena. After starting the engine and its partial or complete warm-up to operating temperature automatic drive gear at the command of the driver includes first gear. In the neutral position of the gearbox or selector hydromechanical transmission, the microcontroller will not include the corresponding first gear drive VHI, regardless of the frequency of rotation of the crankshaft. When the first gear and the increase in the frequency of rotation of the crankshaft of the engine begins the process of starting the car. In this case, the microcontroller sends the command to the dispenser through which the working fluid is supplied into the first cavity and the channels in the housing 1 in the respective working cylinders. Fluid pressure on the piston 4 causes the inclusion of traction, providing a smooth preload leading pads 9 to the slave disk 10.

In the creep torque of the vehicle in the automatic mode second gear, preparing the process of switching the transmission to a higher gear. Upon reaching the appropriate speed in first gear, depending on the mode of operation of the engine (cheap or sports) control signal from the microcontroller is fed to the distributor, which distributes the fluid flow into the second cavity. When this happens instant re the > clutch without breaking the flow of power and torque on the outer primary shaft is transmitted to the gear pair of the second gear. And so on - up to fifth gear, and simultaneously with the fifth transfer the microcontroller will leave enabled and fourth transfer in the case of increasing load, when the engine speed falls, and will need more traction on the drive wheels.

If the acceleration of the vehicle is positive, then the machine by the command of the microcontroller includes a second transmission, and if the vehicle speed is constant (acceleration is zero or comes slow), then the first transmission remains enabled. When you increase the load on the drive wheels (negative acceleration), the reverse occurs.

If necessary, reversing the driver turns on the reverse gear and the work involved only the clutch disc outer shaft, the inclusion of which is happening with increasing frequency of rotation of the crankshaft.

The effect of the use of the invention is that it increases the performance of the power plant by reducing losses in the process of shifting without breaking power flow, and also due to a significant reduction in the switching time, which in turn leads to an increase in economic and environmental performance.

Additionally, this solution allows you to automate the process of shifting fur the technical transmission and thereby improve consumer quality vehicles, in particular, city buses with manual transmission.

1. Two clutch disk type, comprising a housing, the sets of leading and trailing drives, hydraulic cylinders of the drive mechanism of activation of the clutch, wherein the clutch housing has a cylindrical shape by, for example, of the ring gear or spline loosely associated with the inner toothed wheel or slots made on the flywheel housing or the torsional vibration of the engine, or this connection is provided via damping elements, and the tides, made from the inner side and spaced relative to each other at an angle, for example, 120° performed on two cylinders, the axes of which are at the distance corresponding to the distance from the axis corps to mid tide, and the cylinders in pairs in each tide, aimed at diametrically opposite sides, offset relative to each other on the cylinder diameter, and each of them is a piston with two o-rings mounted in grooves machined in the cylinder body, closer to its output side, and on the body of the piston closer to its bottom, so that zapolnenie cavity of the same name cylinder through channels in the form of holes are connected with the outer cylindrical portion of the shell, each in their own area, where smontyrovano stationary sealing device, made in the form of shells, with the inner side of which are mounted four cuffs with three retaining rings, forming together with the case of coupling two cavities to feed them from the water pump through the distribution unit and hoses fluid flowing depending on the control signal channels in the casing zapolnenie the same cavity of the cylinder opposite the piston which, on two spring rails with clamps, mounted on two leading pads in the form of metal plates with attached friction layer, oriented towards each other so that one of the pair of brake pad abuts against the outer output plane of the piston, and the second - the emphasis made in the form of tide on the inner side of the thrust ring, which by their surfaces, by means of bolt connection, attached on two sides to the planes of the clutch housing so that the tides of the rings are located opposite the tides of the body, forming two working zones, in which between the leading pads are driven disks, each of which consists of two steel rings, each of which rivets attached to the blade spring drive, providing axial damping, which is freely located between the two guide disks with less is m external diameter, which is attached to the spline hub is mounted on a splined portion of the primary shaft gear box changes gear, flap spring and guide disks made of Windows, combined with each other and which are damping elements, which can be steel cylindrical springs or rubber cushions, while the internal primary shaft of the gearbox to its output end rests on a ball bearing mounted in a recess of the crankshaft, and the output end of the outer shaft, the inner input shaft, through the clip with ball bearing mounted between work areas clutch.

2. Two coupling according to claim 1, characterized in that the working body of the hydraulic cylinders used oil lubrication system of the engine or gear box changes gear.



 

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