Drive clutch

 

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 [1].

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 [2].

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.

Claims

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.

 

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