The invention relates to a transport machine building. Drive clutch includes a clutch foot pedal 1, the cable 2, the plate 3, the pneumatic valve 4, the spring 10, the lever mechanism 9 of the clutch, a pneumatic booster, acting rod on the lever mechanism 9 of the clutch. Pneumatic valve 4 is mounted on the plate 3, pivotally connected with the lever mechanism 9 clutch and spring-loaded with respect to it, and the clutch foot pedal 1 is connected to the plate 3 by means of the cable 2 in the shell. The technical result - the reduction of the number of parts in the actuator clutch and simplifying it with a simultaneous decrease in the number of Assembly clearances compounds that increases the efficiency and durability of the actuator. 2 Il.
The invention relates to transport machinery and can be used in actuators of the transmission, for example in the drive clutch.
Widespread mechanical drive clutch due to its ease of manufacture and reliability of operation. On the heavy vehicle use drives clutch with amplifiers.
Known drive was corroded clutch with lever mechanism of the clutch, two intermediate lever, valve activate the booster cylinder, mounted in one of the rods, the booster cylinder .
The disadvantage of this drive is that the presence of a large number of rods and levers leads to decrease stiffness and increase of free pedal travel due to elastic deformations and clearances in numerous joint connections.
The closest analogue is the prototype of the claimed actuator clutch is a drive clutch car MAZ-64229, which includes the clutch pedal, cable, roller, an intermediate lever, a spring, a pneumatic valve member plate valve, the pneumatic booster .
The actuator clutch as follows.
When pressing on the clutch pedal is exposed through the cable and the intermediate lever on the rod, which together with the housing of the pneumatic valve is moved to the right, choosing the clearance between the adjusting nut on the valve stem and the housing cover. When this valve plate abuts against the rod and breaks away from the nest, perepiska compressed air into the working cylinder chamber of the pneumatic booster. The cylinder piston is moved while the left, facilitating the rotation of the two shoulders of the lever Enya clutch.
The main disadvantage of this drive can be attributed to the fact that the intermediate lever and thrust increase free play of the clutch pedal, reducing the efficiency of the drive, and used the cable is exposed to moisture and dirt, which reduces its durability.
In addition, the pulley, the guide rope, requires regular maintenance.
The task of the invention is to simplify the design and maintenance of the drive while increasing its efficiency and durability.
This object is achieved in that the drive clutch containing the clutch pedal, cable plate with pneumatic valve and a spring, the lever mechanism of the clutch, a pneumatic booster, which through the rod acts on the lever mechanism of the clutch, pneumatic valve mounted in the plate, which is pivotally connected with the lever mechanism clutch and spring-loaded with respect to it, and the clutch pedal is connected to the plate by means of a rope, made in the shell.
Thus, in the proposed drive clutch instead of the intermediate lever that converts the pulling force from the clutch pedal in the push-pull force, compressive pneumatic valve, applied Also applied to the cable in the sheath, having rigidity and efficiency almost at the level of the hydraulic actuator, and the complexity of manufacturing and Assembly is much lower than hydraulic. The advantage of this drive clutch is the fact that maintenance of the cable actuator does not require any additional work, in addition to adjustment as wear of the friction linings.
In Fig.1 shows a drive clutch of Fig.2 is a pneumatic valve.
Drive clutch includes a clutch foot pedal 1, connected by a cable 2 with the plate 3, on which is mounted a pneumatic valve 4 with the rod 5 and the valve plate 6, so low to the Jack 7 spring 8 (Fig.1, 2). Plate 3 through the axis 12 pivotally connected to the lever mechanism 9 of the clutch and pressed against it by the spring 10. In addition, the lever mechanism 9 of the clutch by means of a rod connected to the camera 11 of the pneumatic booster (Fig.1).
Drive clutch operates as follows.
When the pedal 1 clutch cable 2 acts on the plate 3, by rotating it around the axis 12, causing the pneumatic valve 4 abuts against the rod 5 in the lever mechanism 9 clutch, compressing the spring 10 (Fig.1). P the zda 7, opening access the compressed air in the chamber 11 (Fig.2). When releasing the pedal 1 under the influence of spring 10 plate 3 is returned to its original position, giving the camera 11 with the atmosphere (Fig.1).
When you stop pedal 1 (Fig.1) clutch in the intermediate position, the rod chamber 11 continues to move the lever mechanism 9 clutch up until the plate 3 with pneumatic valve 4 under the influence of spring 10 will move relative to the lever mechanism 9 of the clutch so that the valve plate 6 (Fig.2) on the one hand will press the spring 8 to the socket 7 in the case of pneumatic valve 4, and the other to the rod 5, as blocking of the inlet and outlet opening. This ensures witness the action of the actuator.
The positive effect of the claimed invention - improving the durability and reliability of the drive clutch is achieved by reducing the number of Assembly gaps in connections subject to high wear due to the weak protection from the external environment. Reducing the number of fittings to reduce the weight of the drive clutch and simplifies its construction and maintenance.
The proposed drive clutch is made in proizvodst, 54331, 53371, 5433. Manual”, Minsk, 1998, page 33.
2. “MAZ-64229, 6303, 54323, 54329, 53362, 53363, 53366, 5516. Manual Minsk, 1998, page 40.
Drive clutch containing the clutch pedal, cable plate with pneumatic valve and a spring, the lever mechanism of the clutch, a pneumatic booster, which through the rod acts on the lever mechanism of the clutch, wherein the pneumatic valve plate pivotally connected with the lever mechanism clutch and spring-loaded with respect to it, and the clutch pedal is connected to the plate by means of a rope, made in the shell.
FIELD: transport engineering.
SUBSTANCE: invention relates to power takeoff control devices of special automobiles. Proposed device to control clutch has pneumohydraulic booster and clutch master cylinder. Moreover, device contains additional clutch master cylinder connected to pneumohydraulic booster through hydraulic distributor providing operation of clutch at two modes, namely, traveling and power takeoff ones. Distributor is furnished with mode automatic interlock member. Device contains pickup operating at power takeoff mode in case of overload. Additional clutch master cylinder is provided with makeup tank. Hydraulic distributor can be furnished with mode selector handle or electromagnetic selector. To change over clutch from traveling into power takeoff mode, hydraulic distributor is furnished with electropneumatic drive with pushbutton in cab to switch on electromagnetic valve. Hydraulic distributor is furnished with hydropneumatic drive operated by clutch pedal to change over clutch operation modes.
EFFECT: improved operating conditions of clutch control device, improved convenience of control of clutch on special automobiles with power takeoff devices.
8 cl, 3 dwg
FIELD: transport engineering; automatic transmissions.
SUBSTANCE: proposed gearbox with two multidisk clutches contains two coaxial drive shafts arranged one inside the other, with fitted-on drive pinions of even and odd speeds. Gearbox is furnished additionally with standby clutch engagement system including part of circuit of working brake system consisting of brake pedal and master brake cylinder with possibility of connection through two position cock-distributor with underpiston space of working cylinder of standby clutch engagement system whose behind-the-piston space is coupled with engagement booster of one of clutches.
EFFECT: increased reliability and provision of mobility of vehicles.
SUBSTANCE: invention relates to transmissions. The transmission with friction engagement incorporates an input part, an output part dropping out of engagement with the input part and one throw-out device. One unloaded output part is out of engagement with the input part and, by means of the said throw-out device, is moved into a friction engagement with the input device. The aforesaid throw-out device is made up of a drive cylinder and a driven cylinder communicating via a hydraulic line. The said hydraulic line accommodates a pressure release device designed to dissipate pressure between the aforesaid cylinders.
EFFECT: higher reliability and simpler design.
21 cl, 4 dwg
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.
SUBSTANCE: invention relates to automotive industry, in particular, to cylinders of hydraulic braking systems. Cylinder comprises cylindrical operating chamber accommodating sealed spring-loaded main piston and compensation bypass valve. Operating chamber is divided by main piston into compensation and pressure sections. Pressure section accommodates flexible element of the main piston. Compensation bypass valve is made up of smaller piston arranged and sealed in the main piston. Smaller piston face part is provided with metal ball or tapered body of revolution to get in contact via spring with bypass orifice of the main piston.
EFFECT: longer life, higher reliability, decreased wear.
SUBSTANCE: proposed clutch booster comprises housing accommodating control unit and sealed actuator. Said actuator consists of hydraulic and pneumatic pistons fitted on common rod. Pusher is arranged between rod and clutch disengagement drive element to move axially with said rod. Rod face on pusher side extends behind actuator face wall while rod is sealed in actuator face wall by wiper seal, cup or O-ring.
EFFECT: higher reliability.
SUBSTANCE: invention relates to clutch control backup components. Gearshift aid is connected to standard automotive system with mechanical gearbox and clutch hydraulic drive. Said gearshift aid allows fast gear shifting solely by the lever without using clutch pedal. It comprises extra master cylinder with electromagnetic drive connected thereto and drive throw-in relay, switch at gearshift lever and limit switch at clutch pedal. Switch built in mechanical gearbox lever closes electromagnetic drive feed relay circuit to throw in the clutch via said extra master cylinder and car hydraulic system.
EFFECT: easier control, higher safety.
3 cl, 2 dwg
SUBSTANCE: clutch drive comprises control component, for example, pedal with return spring coupled with tracer. Said tracer varies automatically air pressure in the clutch air actuator subject to clutch control component position, said that of air cylinder piston with rod acting on clutch lever. Tracer comprises the following elements: clutch control element position sensor, one normally-closed electromagnetic air valve, one normally-open air valve, clutch actuator chamber air pressure sensor and clutch electronic control unit. Said elements are interconnected as follows: clutch control element output is connected with control unit; normally-closed electromagnetic air valve input is connected with control unit, while its air input is connected with vehicle air system and air output is connected with actuator working chamber, electrical input of normally-open electromagnetic air valve is connected with control unit while its air input is connected with actuator working chamber and air output with atmosphere. Air pressure pickup pneumatic input is connected with actuator working chamber while its electric output is connected with control unit. The latter is supplied by vehicle onboard circuit. To up the response and adjustment accuracy, several one normally-closed electromagnetic air valves and one normally-open air valve can be incorporated with this system.
EFFECT: higher reliability.
SUBSTANCE: control device comprises an actuating cylinder connected to a pneulatic servo, a clutch release pivoted lever with forks and a pedal, a receiver, a compressor with a filter and a safety device. The control pedal is designed as a two-armed V-shaped lever, hinged at the point of inflection, and is spring-loaded on both sides of the arms. The ends of the double-arm lever interact with the clamps provided on the additional spring-loaded levers that act as movable electromagnet cores. Spring-loaded buttons providing circuit contact closure are installed on each arm of the two-armed lever. One arm of the two-armed lever is connected to the servo regulating the compressed air flow from the compressed air source to stem and piston cavities of the executive air cylinder actuator, which stem is pivotally connected to one end of the pivoted lever interacting with the clutch bearing. The opposite end of the pivoted lever is pivotally connected with the double-acting servo housing.
EFFECT: improved performance due tu selective switching without interruption of the power flow of even and odd rows of gearbox transmissions.
SUBSTANCE: vehicle is equipped with an engine (2) in the rear part (AR) and is equipped with a clutch system (3). The clutch system comprises a hydraulic pipeline (7) extending below the vehicle and connecting the transmitter (5) located in the front part (AV) of the vehicle and the receiver (8) located in its rear part (AR). The hydraulic pipeline (7) is located near the heat source (9) already existing in the vehicle, and is heated from said source (9).
EFFECT: increasing the clutch system reliability.
10 cl, 2 dwg