Clutch control drive

FIELD: transport.

SUBSTANCE: clutch control drive comprises a pedal linked up, by a rigid-braid cable, with the pneumatic control valve servo valve movable stem. The pneumatic control valve second end is yoke-jointed to the clutch disengagement lever arranged on the overrunning coupling inner race fitted free on the pin fitted aligned with the shaft and rigidly-thread-jointed thereon. The overrunning coupling is made up of an inner and outer races, rollers and pin. The overrunning coupling outer race is fitted on the shaft to be in contact with the inner surface via rollers. Note that the said outer surface accommodates a power lever. The gearbox accommodates pneumatic cylinder comprising a piston and con rod. A spring is arranged inside the said pneumatic cylinder between the piston and cylinder housing.

EFFECT: 3D-cabin vibration, ruling out pedal free travel.

4 dwg

 

The invention relates to the field of transport engineering, in particular to actuators control traction vehicles and fixed installations, where between the pedal and the valve may be significant relative movement.

Known control system of traction vehicle containing the flywheel, the clutch disc mounted on the primary shaft of the gearbox and placed between the flywheel and pressure disc, push spring, fork and bearing inclusions clutch, power the electromagnet winding is electrically connected through the contact device with the power supply installed in the cavity of the power of the electromagnet is movable in the axial direction of the anchor, kinematically communicating at one end through a foot clutch pedal and cable drive with a fork clutch. The contact device includes a first spring-loaded and movable in the axial direction of the contact, kinematically connected with the armature of an electromagnet witness actions and electrically connected through the protective device with the power source and the winding force of the electromagnet. The other end of the anchor is made with the possibility of kinematic interaction with the second contact of the contact device, with the position of the armature of the electromagnet witness steps (theologen clutch fork) is determined by the signal processing unit based on the processing and analysis of signals from the master element (see RF patent №2017631, IPC5UK 41/02, published 15.08.1994).

The disadvantages of the known control system clutch is that it depends on electricity and proper operation of the electronics, but also in its design there is no mechanism to compensate for wear of the friction linings, resulting in the wear of the friction pads, the pedal will rise up, in addition, in this system the cable is constantly loaded in the free state due to the spring and operable by an electromagnet.

Closest to the claimed technical solution of the essential features and achieved technical result is a drive control clutch containing a pedal connected by a mechanical connection consisting of pivotally interconnected rods and levers, with the tracking valve valve, snatch spring, returns to its original pedal position, the control lever off the clutch, kinematically connected at one end with the shaft clutch fork and the other with the rod of the valve, a power lever connected at one end with the shaft clutch fork and the other with the rod of the pneumatic cylinder (see Main-line trains MAZ. MS Vysotsky, Iframedoc, LCHRES and others - M.: Mashinostroenie, 1988, p.47, 48, Fig.28).

In from the local design of mechanical drive connection, consisting of pivotally interconnected rods and levers, does not provide fluctuations cabins in three dimensions, and engine vibrations are compensated by gaps in the joints, which affects the definition of the control grip and increases pedal free play, in addition, in the known construction does not provide a mechanism to compensate for wear of the friction linings, resulting in the wear of the pads, the pedal will go up.

The task, which directed the claimed technical solution is to provide fluctuations cabins in three dimensions and the exclusion of free pedal travel.

To solve the task control drive clutch containing a pedal that is connected by mechanical linkage from the servo valve valve, control lever off the clutch, kinematically connected at one end with the shaft clutch fork and the other with the rod of the valve, a power lever connected at one end with the shaft clutch fork and the other with the rod of the pneumatic cylinder, is further provided with an overrunning clutch outer ring which is mounted movably on the shaft clutch fork and the inner ferrule mounted on the finger rigidly connected with the said shaft, the control lever off the clutch and Silov the second lever installed respectively on the inner ring and the outer ring overrunning clutch, in addition, the mechanical connection between the pedal with the tracking valve valve made in the form of a cable in a rigid sheath, and in the working cavity of the cylinder formed between the housing and the piston, a spring.

Distinctive features, namely, that the actuator is further provided with an overrunning clutch outer ring which is mounted movably on the shaft clutch fork and the inner ferrule mounted on the finger rigidly connected with the said shaft, the control lever off the clutch and the power lever mounted respectively on the inner ring and the outer ring overrunning clutch, together constitute a mechanism to compensate for wear of the friction lining, which provides a constant pedal position when the friction linings wear due to the ability of the overrunning clutch to transmit torque in only one direction, always providing the control lever off the clutch the initial vertical position.

The mechanical connection of the pedal with the tracking valve valve in the form of a rope in a tight braid helps to ensure that vibrations of the cab in three dimensions, and to provide tilting of the cab at any angle without interruptions and without the appearance of gaps in the drive.

Installation in the working cavity of pneumocele the DRA, formed between the housing and the piston, a spring which constantly acting on the piston and piston rod of the pneumatic cylinder, eliminates gaps between the fork and release bearing, resulting eliminates pedal free play.

Analysis of the known technical solutions in this field of technology has shown that the claimed technical solution has features that are missing in the analogs, and their use in the inventive combination of essential features allows you to get a new technical result, therefore, the proposed solution meets the patentability requirements of "novelty" and "inventive step".

The claimed technical solution is illustrated by drawings:

figure 1 - control drive clutch, General view;

figure 2 is a view As in figure 1 at a larger size (shown at the position of the levers without wear of the friction lining);

figure 3 is a view As in figure 1 at a larger size (shown at the position of the levers when the wear of the friction lining);

figure 4 - cross section B-B in figure 1 (shown to compensate for wear of the friction lining).

Control drive clutch includes a pedal 1, installed by axis 2 on the bracket 3, which is attached to the front of the cab 4 of the vehicle. The pedal 1 is installed on axis 2, with the possibility of rotation and has a return spring 5.

the flexible cable 6 is located in a rigid sheath, at one end of the rope 6 is pivotally connected to the pedal 1, and the braid is rigidly fixed to the bracket 3 (1 point B). The second end of the cable 6 is connected to the movable rod 7 servo valve valve 8, and the braid is rigidly fixed to the motor 9 through a bracket 10 (1 point).

The valve 8 by the second end is mounted pivotally by means of the plug 11 to the lever 12 off control of the clutch. The lever 12 is installed outside of the crankcase 13 of the clutch on the inner cage 14 overrunning clutch by means of pins 15. The inner ferrule 14 is freely mounted on the finger 16, which is mounted coaxially to the shaft 17 is rigidly connected with it by a thread.

On the shaft 17 through the slot installed outer ring 18 overrunning clutch, which inner surface is connected with the inner yoke 14 by means of rollers 19, and on its outer surface by means of the key 20 has the power lever 21.

The inner ferrule 14, the outer ring 18, the rollers 19 and the finger 16 form an overrunning clutch, which in conjunction with the lever 12 off control of the clutch and the power lever 21 is formed to compensate for wear of the friction lining.

Inside the clutch housing on the shaft 17 mounted plug 22 of the clutch, which is engaged with the working surfaces of the coupling 23 of the clutch.

On the gearbox 24 by means of a bracket 25 mounted pneumatic cylinder 26, the piston 27 and the rod 28. The space between the piston 27 and the housing of the pneumatic cylinder 26 forms a working cavity in which is located the spring 29. The rod 28 with one end pivotally connected with the power lever 21 and the other end having a spherical shape, rests on the piston 27.

Air pressure to the valve 8 of the pneumatic system of the vehicle is fed through tube 30, and the tube 31, the portion of air enters the pneumatic cylinder 26.

The drive works as follows.

The driver presses on the pedal 1 and force the feet to move it down, the end of the rope 6, mounted on the pedal 1, is moved inside the braid, pulling the movable rod 7 valve 8. The movable rod 7 moves the servo valve valve 8, which opens the compressed air in the working cavity of the pneumatic cylinder 26 in proportion to the go pedal 1. The air pressure in the working cavity of the pneumatic cylinder 26, acting on the piston 27, creates an additional force on the rod 28 and thereby creates additional stress on the power lever 21, reducing the force on the pedal 1.

The lever 12 is turned clockwise, rotates the plug 22 of the clutch by moving the clutch 23 of the clutch to the right, providing vyklyuchennaya in General and management in particular, i.e. by providing the valve 8 the witness may be complete or incomplete off the clutch, depending on the pedal 1.

When releasing the pedal 1 clutch 23, flowing pressure coupling device is returned to its original position, by acting on the plug 22 through the arm 12. The lever 12 acts through the rollers 19 overrunning clutch on the lever 21. The lever 21, in turn, acts on the rod 28 against the force of spring 29, and returns the piston 27 of the cylinder 26 to its original position, and the air from the working cavity of the pneumatic cylinder 26 is discharged through the valve 8 due to the presence of hard feedback, depending on the intensity of the pedal is released, i.e. as it is required by road conditions.

When returning the lever 12 to its original position it affects the valve 8 and the cable 6, returning them to their original position. The pedal 1 is carried by a cable 6 and the return spring 5 is returned to its original position.

Due to wear of the friction linings, which occurs as the operation of the vehicle, coupling clutch 23 is moved to the left (see figure 3) and thereby rotates the plug 22 of the clutch counterclockwise.

The rod 28, moving to the right, moves the piston 27 of the cylinder 26 ago, overcoming the force of spring 29, with the em capacity overrunning clutch to permit free rotation of the outer ring 18 counterclockwise and the impossibility of its clockwise rotation, the lever 12 remains always in its original vertical position, therefore, the pedal 1 is always returned in the same upper original position.

The proposed technical solution allows you to create variations of the cabin in three dimensions and to eliminate the free play of the pedal.

The claimed technical solution to meet the requirement of industrial applicability and possible to implement on standard manufacturing equipment.

The drive control clutch containing a pedal that is connected by mechanical linkage from the servo valve valve, control lever off the clutch, kinematically connected at one end with the shaft clutch fork and the other with the rod of the valve, a power lever connected at one end with the shaft clutch fork and the other with the rod of the pneumatic cylinder, wherein the actuator is further provided with an overrunning clutch outer ring which is mounted movably on the shaft clutch fork and the inner ferrule mounted on the finger rigidly connected with the said shaft, the control lever off the clutch and the power lever set respectively on the inner ring and the outer ring overrunning clutch, in addition, the mechanical connection between the pedal with servo valve pnevmoraspyleniem what I made in the form of a cable in a rigid sheath, while in the working cavity of the cylinder formed between the housing and the piston, a spring.



 

Same patents:

FIELD: transportation.

SUBSTANCE: proposed device has a control lever, kinematically linked to sliding bars (6, 7, 8) with indentations on the outer surface, distribution valve unit (2) for clutch control, pilot valves fitted in the valve unit, coupling rods (14), which are kinematically linked to sliding bars (6, 7, 8) through reciprocating levers (11, 12), the projections of which enter the grooves on the outer surface of sliding bars (6, 7, 8), regulator (4) of clutch engagement, source (1) of pressurised actuating medium, and a servo-cylinder (3) for engaging and disengaging the clutch. The distribution valve unit (2) for clutch control is fitted on the fastening surface of the cover (5) of the gearbox, and has two reciprocating levers (11, 12), mounted in guide grooves of its housing, in contact with push rods (13), fitted in vertical openings in cover (5) of the gearbox in the plane of reciprocation of levers (11, 12), in contact with ball locks (10), of bars (6, 7, 8). The device also has rods (17), fitted vertically in the bottom part of the housing of the valve unit (2) directly under the openings of the release valve, in line with them. The upper ends of the rods are cone-shaped.

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FIELD: transport.

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